2010 Cadillac Truck SRX FWD V6-3.0L Page 1883

2010 Cadillac Truck SRX FWD V6-3.0L Page 1883

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provide an overview of each diagnostic category.

DTC Descriptor

DTC P1400

- Cold Start Emission Reduction Control System

Circuit/System Description

The catalytic converter must be warmed to efficiently reduce the emissions. The cold start strategy is to reduce the amount of time it takes to warm

the catalytic converter. During a cold start, the engine idle speed is elevated and spark timing is retarded to allow the catalyst to warm quickly. This

diagnostic monitors the following to build an exhaust energy model:

* Engine speed

* Spark advance

* Throttle position

* Engine coolant temperature

* Engine run time

* Park/neutral position

* Vehicle speed

The actual model is then compared to the expected exhaust energy model.

Conditions for Running the DTC

* The engine is running, and a cold start has been detected.

* Vehicle speed is less than 3 km/h (2 mph).

* The engine is at idle with no input from the accelerator pedal.

* The calculated catalyst temperature is less than 100掳C (212掳F).

* Engine coolant is greater than 10掳C (50掳F) and less than 56掳C (132掳F).

* DTCs P0068, P0101, P0102, P0103, P0106, P0107, P0108, P0112, P0113, P0116, P0117, P0118, P0120, P0121, P0122, P0123, P0220,

P0222, P0223, P0201, P0202, P0203, P0204, P0205, P0206, P0300, P0335, P0336, P0351, P0352, P0353, P0501, P0502, P0506, P0507,

P0601, P0602, P0603, P0604, P0606, P0607, P060D, P062F, P0641, P0651, P1101, P1516, P1682, P2101, P2119, P2120, P2122, P2123,

P2125, P2127, P2128, P2135, P2138, P2176, P2610 are not set.

This DTC runs for 12 s within the first 17 s of start-up, or until the calculated catalyst temperature is greater than 900掳C (1,652掳F). This diagnostic

runs once per trip when a cold start has been determined.

Conditions for Setting the DTC

The actual exhaust energy model does not match the expected exhaust energy model.

Action Taken When the DTC Sets

DTC P1400 is a Type A DTC.

Conditions for Clearing the MIL/DTC

DTC P1400 is a Type A DTC.

Reference Information

Description and Operation

Engine Control Module Description (See: Powertrain Management/Computers and Control Systems/Description and Operation/Engine Control

Module Description)

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code

(DTC) Type Definitions)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

2010 Cadillac Truck SRX FWD V6-3.0L Page 1388

2010 Cadillac Truck SRX FWD V6-3.0L Page 1388

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptors

DTC P0300

- Engine Misfire Detected

DTC P0301

- Cylinder 1 Misfire Detected

DTC P0302

- Cylinder 2 Misfire Detected

DTC P0303

- Cylinder 3 Misfire Detected

DTC P0304

- Cylinder 4 Misfire Detected

DTC P0305

- Cylinder 5 Misfire Detected

DTC P0306

- Cylinder 6 Misfire Detected

Circuit/System Description

The engine control module (ECM) uses information from the crankshaft position sensor and the camshaft position sensors in order to determine

when an engine misfire is occurring. By monitoring variations in the crankshaft rotation speed for each cylinder, the ECM is able to detect

individual misfire events. A misfire rate that is high enough can cause 3-way catalytic converter damage. The malfunction indicator lamp (MIL)

will flash ON and OFF when the conditions for catalytic converter damage are present. DTCs P0301 through P0306 correspond to cylinders 1

through 6. If the ECM is able to determine that a specific cylinder is misfiring, the DTC for that cylinder will set, and the corresponding fuel

injector is disabled. The ECM will re-enable the fuel injector after 4 crankshaft revolutions when the misfire is not current. The ECM will re-enable

the fuel injector after 8 crankshaft revolutions when the misfire is not current, if the vehicle is equipped with a manual transmission.

Conditions for Running the DTC

* DTC P0010, P0011, P0013, P0014, P0016, P0017, P0018, P0019, P0020, P0021, P0023, P0024, P0068, P0101, P0102, P0103, P0106,

P0107, P0108, P0112, P0113, P0117, P0118, P0120, P0121, P0122, P0123, P0220, P0222, P0223, P0335, P0336, P0606, P0641, P0651,

P1516, P2101, P2122, P2123, P2127, P2128 or P2176 is not set.

* The engine speed is between 450-6,600 RPM.

* The evaporative emissions (EVAP) leak detection is not active.

* The delivered torque signal is greater than 5 % at idle.

* The delivered torque signal is between 6-29 % with the transmission in drive.

* The engine coolant temperature (ECT) is between -7 and +127掳C (+19 and +261掳F).

* The ECM is not receiving a rough road signal.

* The fuel level is greater than 11 %.

* The antilock brake system (ABS) and the traction control system (TCS) are not active or detecting rough road.

* Torque Converter Clutch (TCC) is not applied/active.

* The ECM is not in fuel cut-off or decel fuel cut-off mode.

* DTCs P0300 through P0306 run continuously when the above conditions exist for greater than 1,000 engine revolutions. 200 revolutions

after the first failure.

Conditions for Setting the DTC

P0300

The ECM detects a crankshaft rotation speed variation indicating a misfire rate sufficient to cause emissions levels to exceed a predetermined value.

P0301, P0302, P0303, P0304, P0305, P0306

The ECM detects a crankshaft rotation speed variation indicating a single cylinder misfire rate sufficient to cause emissions levels to exceed

2010 Cadillac Truck SRX FWD V6-3.0L Page 2087

2010 Cadillac Truck SRX FWD V6-3.0L Page 2087

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptors

DTC P2719

- Clutch Pressure Control (PC) Solenoid 4 System Performance

DTC P2720

- Clutch Pressure Control (PC) Solenoid 4 Control Circuit Low Voltage

DTC P2721

- Clutch Pressure Control (PC) Solenoid 4 Control Circuit High Voltage

Diagnostic Fault Information

Circuit/System Description

The clutch pressure control (PC) solenoid 4 is part of the control solenoid valve assembly which has no serviceable components. The normally low

PC solenoid 4 regulates and directs oil pressure to the 2-6 clutch regulator valve. Increasing PC solenoid 4 pressure, increases pressure to the 2-6

clutch regulator valve. The TCM varies the current to the PC solenoid 4 through a low side driver. Increasing the current to PC solenoid 4 increases

oil pressure by closing OFF the solenoid exhaust port. Decreasing the current to PC solenoid 4 decreases oil pressure by opening the exhaust port.

PC solenoid 4 power is supplied by the TCM through a high side driver (HSD). The HSD protects the circuit and components from excessive

current flow. If excessive current flow is detected, the HSD will turn OFF. When the fault is corrected the HSD will reset.

Conditions for Running the DTC

P2719

* The engine speed is greater than 400 RPM for 5 seconds.

* The ignition voltage is 8.6 volts or greater.

* DTC P2719 has not set this ignition cycle.

P2720

* The engine speed is greater than 400 RPM for 5 seconds.

* The ignition voltage is 8.6 volts or greater.

* DTC P2720 has not set this ignition cycle.

P2721

* The engine speed is greater than 400 RPM for 5 seconds.

* The ignition voltage is 8.6 volts or greater.

* DTC P2721 has not set this ignition cycle.

Conditions for Setting the DTC

P2719

The TCM detects an internal electrical malfunction on the clutch PC solenoid 4 control circuit where the measured PC solenoid 4 current does not

equal the commanded clutch PC solenoid 4 current for 5 seconds.

P2720

The TCM detects a short to ground on the clutch PC solenoid 4 control circuit for 1 second.

P2721

The TCM detects an open or short to voltage on the clutch PC solenoid 4 control circuit for 1 second.

Action Taken When the DTC Sets

P2719

* DTC P2719 is a Type C DTC.

2010 Cadillac Truck SRX FWD V6-3.0L Page 951

2010 Cadillac Truck SRX FWD V6-3.0L Page 951

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using these diagnostic procedures.

* If an engine mechanical noise can be heard, repair the condition before proceeding with this diagnostic. Refer to Symptoms - Engine

Mechanical (See: Engine, Cooling and Exhaust/Engine/Testing and Inspection/Symptom Related Diagnostic Procedures/Symptoms -

Engine Mechanical).

P0324, P0326 and P0331

1. Using a scan tool, verify DTCs P0335 or P0336 are not set.

瀚慖f any of the DTCs are set, diagnose them first. Refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code

Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle).

2. Verify the following conditions do not exist.

* A loose or broken vehicle accessory

* A loose or broken accessory bracket

* Excessive engine mechanical noise

瀚慖f any of the conditions exist, repair as necessary.

3. Replace the K20 ECM if no external knock sensor circuit issues exist.

P0325, P0327, P0328, P0330, P0332, and P0333

1. Ignition OFF, disconnect the affected B68 KS.

2. Verify the affected B68 KS is properly tightened, refer to Fastener Tightening Specifications (See: Powertrain Management/Specifications).

3. Ignition OFF, with appropriate length jumper wires, connect the B68A KS1 harness to the B68B KS2 sensor and the B68B KS2 harness to

the B68A KS1 sensor.

4. Monitor the DTCs using a scan tool. Operate the vehicle within the conditions for running the DTC. Verify the fault does not follow the

sensor in question.

瀚慖f the fault follows the sensor in question, replace the appropriate B68 KS.

5. Ignition OFF, remove the jumper wires from the previous step.

6. Ignition ON, measure for 1-4 V between each of the following circuits and ground on the K20 ECM side of the harness connector:

* The B68 KS signal circuit, terminal A or 1

* The B68 KS signal circuit, terminal B or 2

瀚慖f less than the specified range, test the circuits for a short to ground or an open/high resistance. If the circuits test normal, replace the

K20 ECM.

瀚慖f greater than the specified range, test the circuits for a short to voltage. If the circuits test normal, replace the K20 ECM.

7. Test for intermittent or poor connections at the ECM, B68 KS, and in-line connectors where present.

8. If all circuits test normal, replace the K20 ECM.

P06B6 or P06B7

1. Using a scan tool, verify the following DTCs are not set: P0325, P0327, P0328, P0330, P0332, and P0333.

瀚慖f any of the DTCs are set, diagnose them first.

2. DTCs P06B6 and P06B7 indicate an internal ECM circuitry failure. Verify the external knock sensor circuits and connectors for proper

condition.

瀚慖f no external knock sensor circuit issues exist, replace the K20 ECM.

Repair Instructions

* Knock Sensor Replacement - Bank 1 (See: Powertrain Management/Computers and Control Systems/Knock Sensor/Service and

Repair/Knock Sensor Replacement - Bank 1)

* Knock Sensor Replacement - Bank 2 (See: Powertrain Management/Computers and Control Systems/Knock Sensor/Service and

Repair/Knock Sensor Replacement - Bank 2)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for ECM replacement, setup, and programming

Repair Verification

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

P06B7

DTC P0324-P0328, P0330-P0333, P06B6, or P06B7 (LF1)

2010 Cadillac Truck SRX FWD V6-3.0L Page 1774

2010 Cadillac Truck SRX FWD V6-3.0L Page 1774

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptors

DTC P0850

- Park/Neutral Position (PNP) Switch Circuit

DTC P0851

- Park/Neutral Position (PNP) Switch Circuit Low Voltage

DTC P0852

- Park/Neutral Position (PNP) Switch Circuit High Voltage

Diagnostic Fault Information

Typical Scan Tool Data

Circuit/System Description

The transmission manual shift shaft switch assembly, also known as the Internal Mode Switch (IMS), is a sliding contact switch attached to the

manual shift shaft inside the transmission case. The Park/Neutral Position (PNP) Switch is integrated into the IMS and connects to the Transmission

Control Module (TCM) lead-frame through a short wire harness. The circuit uses the TCM as a pass-through connector only. The Park/Neutral

Signal is sent from the park/neutral switch directly to the engine control module (ECM) and is used for engine start enable.

Conditions for Running the DTC

* Ignition voltage is between 8-18 volts.

* Engine speed is greater than 1000 RPM.

Conditions for Setting the DTC

P0850 and P0851

* The ECM detects the Park/Neutral switch signal equals 0 volts (Park/Neutral) when the IMS reports a Drive range for 0.2 second.

* TP is equal to or greater than 10 percent.

* Engine torque is equal to or greater than 75 Nm (55 lb ft).

* Vehicle speed is equal or greater than 10 km/h (6 mph).

P0852

The ECM detects the Park/Neutral switch signal equals 12 volts (In-Gear) when the IMS reports a Park/Neutral range for 0.2 second.

Action Taken When the DTC Sets

* DTCs P0850, P0851, and P0852 are Type C DTCs.

* The ECM uses IMS Range for engine start-up.

Conditions for Clearing the DTC

DTCs P0850, P0851, and P0852 are Type C DTCs.

2010 Cadillac Truck SRX FWD V6-3.0L Page 1645

2010 Cadillac Truck SRX FWD V6-3.0L Page 1645

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptors

DTC P0667

- Transmission Control Module (TCM) Temperature Sensor Performance

DTC P0668

- Transmission Control Module (TCM) Temperature Sensor Circuit Low Voltage

DTC P0669

- Transmission Control Module (TCM) Temperature Sensor Circuit High Voltage

Circuit/System Description

The transmission control module (TCM) temperature sensor is located inside of the control solenoid valve assembly, which has no serviceable

components. The TCM temperature sensor provides the temperature of the TCM. This temperature reading is used in various shifting and

diagnostic routines in the TCM software. This fault is handled inside the TCM and no external circuits are involved.

Conditions for Running the DTC

P0667

* No DTCs P0101, P0102, P0103, P0106, P0107, P0108, P0171, P0172, P0174, P0175, P0201, P0202, P0203, P0204, P0205, P0206, P0207,

P0208, P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307, P0308, P0401, P042E, P0658, P0668, P0669, P06AD, P06AE, P0712,

P0713, P0716, P0717, P0722, P0723, P0962, P0963, P0966, P0967, P0970, P0971, P215C, P2720, P2721, P2729, or P2730.

* Brake torque is not active.

* The engine speed is greater than 400 RPM for 5 seconds or greater.

* The ignition voltage is 8.6 volts or greater.

P0668

* DTC P0668 has set this ignition cycle.

* The engine speed is greater than 400 RPM for 5 seconds.

* The ignition voltage is 8.6 volts or greater.

P0669

* No ISS DTCs P0716 or P0717.

* No OSS DTCs P0722 or P0723.

* The transmission output shaft speed is 200 RPM or greater for 200 seconds or more.

* The engine speed is greater than 400 RPM for 5 seconds.

* The ignition voltage is 8.6 volts or greater.

Conditions for Setting the DTC

P0667

* The difference between the transmission fluid temperature (TFT) and TCM substrate temperature is greater than 20-50掳C (36-90掳F),

depending on the average of the TFT, TCM substrate and TCM power up temperatures.

* The difference between the TCM power up temperature and TCM substrate temperature is greater than 8-10掳C (14-18掳F) depending on the

average of the TFT, TCM substrate and TCM power up temperatures.

* The above conditions have to be met for 5 minutes within a 6 minute period.

P0668

The TCM temperature is less than -249掳C (-416掳F) or less for 1 minute.

P0669

The TCM temperature is -249掳C (-416掳F) or greater for 1 minute.

Action Taken When the DTC Sets

* DTCs P0667, P0668, and P0669 are Type B DTCs.

* The TCM defaults the TCM substrate temperature to the TCM power up temperature.

Conditions for Clearing the DTC

2010 Cadillac CTS Sedan AWD V6-3.6L Page 419

2010 Cadillac CTS Sedan AWD V6-3.6L Page 419

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptors

DTC B1640 01

- Mirror Heater Circuit Short to Battery

DTC B1640 02

- Mirror Heater Circuit Short to Ground

Diagnostic Fault Information

Circuit/System Description

The driver door module (DDM) and passenger door module (PDM) supply voltage to the outside rearview mirror heater elements upon receipt of a

serial data message from the HVAC module indicating that the rear defrost system is active. The door switch supplies B+ through the mirror

heating element control circuit when a request is seen. Ground is applied through the mirror heating low reference circuit.

Conditions for Running the DTC

Battery voltage must be between 9-16 volts.

Conditions for Setting the DTC

B1640 01

A short to voltage is detected on the mirror heating element supply voltage circuit while the heated mirrors are inactive.

B1640 02

A short to ground is detected on the mirror heating element supply voltage circuit while the heated mirrors are active.

Action Taken When the DTC Sets

The heated mirror will be disabled.

Conditions for Clearing the DTC

* A current DTC will clear when the fault is no longer present

* A history DTC will clear after 40 malfunction-free ignition cycles

Reference Information

Schematic Reference

Outside Rearview Mirror Schematics (See: Body and Frame/Mirrors/Diagrams/Electrical Diagrams/Outside Rearview Mirror Schematics)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views)

Description and Operation

Outside Mirror Description and Operation (See: Body and Frame/Mirrors/Description and Operation/Outside Mirror Description and Operation)

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit

Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Wiring Repairs/Wiring Repairs)

2010 Cadillac CTS Sedan AWD V6-3.6L Page 152

2010 Cadillac CTS Sedan AWD V6-3.6L Page 152

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptors

DTC B0080 01

- Passenger Seat Position Sensor Circuit Short to Battery

DTC B0080 02

- Passenger Seat Position Sensor Circuit Short to Ground

DTC B0080 04

- Passenger Seat Position Sensor Circuit Open

DTC B0080 06

- Passenger Seat Position Sensor Circuit Short to Ground or Open Circuit

DTC B0080 08

- Passenger Seat Position Sensor Circuit Signal Invalid

Diagnostic Fault Information

Circuit/System Description

The seat position sensor is used to determine the proximity of a front passenger seat position with respect to the inflatable restraint I/P module. The

seat position sensor is a hall effect sensor that is mounted on the seat track of the front passenger seat. The seat position sensor is connected to the

sensing and diagnostic module (SDM) with a low reference and a signal circuit. The SDM uses the state of the seat position sensor to determine the

need for a stage 2 deployment of the inflatable restraint I/P module. When the seat is in the forward position stage 2 deployment is disabled, and

when in the rearward position stage 2 deployment is enabled. The SDM monitors the RF seat position sensor signal circuit and if a fault is detected,

the SDM will set DTC B0080 and defaults to disabling stage 2 inflatable restraint I/P module deployment.

Conditions for Running the DTC

Ignition voltage is between 9-16 volts.

Conditions for Setting the DTC

B0080 01

The SDM detects the RF seat position sensor signal circuit is shorted to voltage for 500 milliseconds.

B0080 02

The SDM detects the RF seat position sensor signal circuit is shorted to ground for 500 milliseconds.

B0080 04

The SDM detects the RF seat position sensor signal circuit is open for 500 milliseconds.

B0080 06

The SDM detects the RF seat position sensor signal circuit is shorted to ground or an open for 500 milliseconds.

B0080 08

The SDM detects an invalid signal on the RF seat position sensor signal circuit.

2010 Cadillac CTS Sedan AWD V6-3.6L Page 1003

2010 Cadillac CTS Sedan AWD V6-3.6L Page 1003

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptors

DTC P0100

- Mass Air Flow (MAF) Sensor Circuit

DTC P0102

- Mass Air Flow (MAF) Sensor Circuit Low Frequency

DTC P0103

- Mass Air Flow (MAF) Sensor Circuit High Frequency

Diagnostic Fault Information

Circuit/System Description

The mass air flow (MAF) sensor is located in the air intake duct. The MAF sensor is an airflow meter that measures the amount of air that enters the

engine. The MAF sensor uses a hot film that is cooled by air flowing past the sensing film as air enters the engine. The amount of cooling is

proportional to the amount of the air flow. As the air flow increases, more current is required in order to maintain the hot film at a constant

temperature. The engine control module (ECM) uses the MAF sensor in order to provide the correct fuel delivery for all operating conditions. The

intake air temperature (IAT) sensor is integrated into the MAF sensor.

Conditions for Running the DTC

* The ignition is ON, or the engine is operating.

* The ignition voltage is greater than 10.5 V.

* DTC P0100, P0102 and P0103 run continuously once the above conditions are met for 200 mS.

Conditions for Setting the DTC

P0100

The ECM detects that the MAF sensor signal is 0.0 Hz.

P0102

The ECM detects that the MAF sensor signal is less than 1433 Hz.

P0103

The ECM detects that the MAF sensor signal is greater than 12,346 Hz.

Action Taken When the DTC Sets

DTCs P0100, P0102, and P0103 are Type B DTCs.

Conditions for Clearing the DTC

DTCs P0100, P0102, and P0103 are Type B DTCs.

Diagnostic Aids

* Inspect the harness of the B75B MAF/IAT sensor to verify that it is not routed too close to the following components:

- The secondary ignition wires or coils

2010 Cadillac CTS Sedan AWD V6-3.6L Page 619

2010 Cadillac CTS Sedan AWD V6-3.6L Page 619

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptors

DTC B3819 00

- Left Rear Window Up Control Circuit

DTC B3820 00

- Left Rear Window Down Control Circuit

DTC B3822 00

- Right Rear Window Up Control Circuit

DTC B3823 00

- Right Rear Window Down Control Circuit

Diagnostic Fault Information

Circuit/System Description

The body control module (BCM) monitors the window UP/DOWN command from the driver door module (DDM). When the rear window UP or

DOWN command is received, the BCM sends a signal to the appropriate rear window switch. The rear window switches continuously monitor the

up and down signal circuits, if no function is being commanded, the signal voltage is at approximately B+ voltage. If the UP or DOWN function is

commanded, the BCM signal voltage drops approximately 5 volts and the appropriate rear window switch will then command the window in the

UP or DOWN direction.

Conditions for Running the DTC

Battery voltage is between 9-16 volts.

Conditions for Setting the DTC

2010 Cadillac CTS Sedan AWD V6-3.6L Page 1125

2010 Cadillac CTS Sedan AWD V6-3.6L Page 1125

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptors

DTC P0171

- Fuel Trim System Lean Bank 1

DTC P0172

- Fuel Trim System Rich Bank 1

DTC P0174

- Fuel Trim System Lean Bank 2

DTC P0175

- Fuel Trim System Rich Bank 2

Circuit/System Description

The engine control module (ECM) controls a Closed Loop air/fuel metering system in order to provide the best possible combination of

driveability, fuel economy, and emission control. The ECM monitors the heated oxygen sensor (HO2S) signal voltage, and adjusts the fuel delivery

based on the signal voltage while in Closed Loop. A change made to the fuel delivery changes the long and short term fuel trim values. The short

term fuel trim values change rapidly in response to the HO2S signal voltages. These changes fine tune the engine fueling. The long term fuel trim

values change in response to trends in the short term fuel trim The long term fuel trim makes coarse adjustments to fueling in order to re-center and

restore control to short term fuel trim. The ideal fuel trim values are around 0 %. A positive fuel trim value indicates that the ECM is adding fuel in

order to compensate for a lean condition. A negative fuel trim value indicates that the ECM is reducing the amount of fuel in order to compensate

for a rich condition.

If the ECM detects an excessively lean condition, DTC P0171 or P0174 sets. If the ECM detects an excessively rich condition, DTC P0172 or

P0175 sets.

Conditions for Running the DTC

* DTCs P0101, P0102, P0103, P0106, P0107, P0108, P0201-P0206, P0300-P0306, P0442, P0443, P0446, P0449, P0451-P0455, P0496,

P0506, P0507, P2227-P2230, P2269 are not set.

* The engine is in Closed Loop status.

* The engine coolant temperature (ECT) is between -38 and +150掳C (-36 and +302掳F).

* The intake air temperature (IAT) is between -38 and +150掳C (-36 and +302掳F).

* The manifold absolute pressure (MAP) is between 5-255 kPa (1.45-37 psi).

* The vehicle speed is less than 134 km/h (83 mph).

* The engine speed is between 400-6,600 RPM.

* The mass air flow (MAF) is between 0.5-510 g/s.

* The barometric pressure (BARO) is greater than 70 kPa (10.2 psi).

* The fuel level is greater than 10 %.

* This diagnostic runs continuously when the above conditions have been met.

Conditions for Setting the DTC

* The average long term FT weighted average value is greater or less than a calibrated value.

* The above condition is present for approximately 3 min after the Conditions for Running the DTC have been met.

Action Taken When the DTC Sets

DTCs P0171, P0172, P0174, and P0175 are Type B DTCs.

Conditions for Clearing the MIL/DTC

DTCs P0171, P0172, P0174, and P0175 are Type B DTCs.

Diagnostic Aids

* Allow the engine to reach operating temperature. With the engine running, observe the HO2S parameter with a scan tool. The HO2S value

should vary from approximately 40 mV to approximately 900 mV, and respond to fueling changes.

* The normal Short Term FT and Long Term FT parameters should be between +10 and -10 % with 0 % the optimum, with the engine running

at operating temperature.

2010 Cadillac CTS Sedan AWD V6-3.6L Page 402

2010 Cadillac CTS Sedan AWD V6-3.6L Page 402

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptor

DTC B1527

- High Parasitic Load Detected

Circuit/System Description

The body control module (BCM) monitors the state of charge (SOC) of the electrical system. If the BCM senses that the SOC at ignition On is 30

percent lower than what it was when the engine was running.

Conditions for Running the DTC

The ignition must be in Accessory or Run mode for this code to set.

Conditions for Setting the DTC

The SOC at ignition On is 30 percent lower than when the engine was running and battery drain is more than 2 amps.

Action Taken When the DTC Sets

There is no battery telltale illuminated or DIC message displayed.

Conditions for Clearing the DTC

* The DTC will clear if the fault does not return after 50 consecutive ignition cycles.

* The DTC will clear when run SOC is greater than or equal to 80 percent.

Reference Information

Schematic Reference

Starting and Charging Schematics (See: Starting and Charging/Diagrams/Electrical Diagrams)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views)

Description and Operation

Charging System Description and Operation (See: Starting and Charging/Charging System/Description and Operation)

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit

Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Wiring Repairs/Wiring Repairs)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Verification

Ignition ON, compare the scan tool Prev. State of Charge and Start Up State of Charge parameters. The scan tool readings should not differ by

greater than 30 percent.

If the scan tool readings differ by greater than 30 percent, refer to Battery Electrical Drain/Parasitic Load Test (See: Starting and Charging/Testing

and Inspection/Component Tests and General Diagnostics/Battery Electrical Drain/Parasitic Load Test)

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

2010 Cadillac CTS Sedan AWD V6-3.6L Page 67

2010 Cadillac CTS Sedan AWD V6-3.6L Page 67

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptors

B009A 01

- Left Active Hood Hinge Actuator Deployment Loop Short to Battery

B009A 02

- Left Active Hood Hinge Actuator Deployment Loop Short to Ground

B009A 04

- Left Active Hood Hinge Actuator Deployment Loop Open

B009A 0D

- Left Active Hood Hinge Actuator Deployment Loop Above Threshold

B009A 0E

- Left Active Hood Hinge Actuator Deployment Loop Below Threshold

Diagnostic Fault Information

Circuit/System Description

The pedestrian hood actuators deploy only when a valid signal whose energy is capable of triggering deployment of the hood is present. The

pedestrian hood actuators only deploys in those events where the activation of the hood is expected. The hood actuator is not expected to deploy in

low severity event where the risk of injury is low or in a high severity event like a car to car crash. During a frontal pedestrian impact of sufficient

force the pedestrian impact detection module will allow current to flow through the deployment loop in order to deploy the hood hinge actuator.

The pedestrian impact detection module performs continuous diagnostic tests on the deployment loops to check for proper circuit continuity, shorts

to ground and shorts to voltage. There are 2 shorting bars used within the hood hinge actuator connector which will short together both high and

low control circuits, when the hood hinge connector is disconnected. This helps to prevent unwanted deployment of the actuator during servicing.

Conditions for Running the DTC

Ignition voltage is between 9-16 volts.

Conditions for Setting the DTC

B009A 01

The pedestrian impact detection module deployment loop resistance leakage is less than 3.5 k ohms for 2.5 seconds.

B009A 02

The pedestrian impact detection module deployment loop resistance leakage is less than 3.5 k ohms for 2.5 seconds.

B009A 04

The pedestrian impact detection module deployment loop resistance is greater than 7.2 ohms for 2.5 seconds.

B009A 0D

The pedestrian impact detection module deployment loop resistance is greater than 3.1 ohms for 2.5 seconds.

B009A 0E

The pedestrian impact detection module deployment loop resistance is less than 1.6 ohms for 2.5 seconds.

2010 Cadillac CTS Sedan AWD V6-3.6L Page 1130

2010 Cadillac CTS Sedan AWD V6-3.6L Page 1130

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptors

DTC P182E

- Internal Mode Switch - Invalid Range

DTC P1915

- Internal Mode Switch Does Not Indicate Park/Neutral (P/N) During Start

Diagnostic Fault Information

Typical Scan Tool Data

Circuit/System Description

The manual shift detent lever with shaft position switch assembly or internal mode switch (IMS) assembly is a sliding contact switch attached to the

control valve body within the transmission. The 4 inputs to the transmission control module (TCM) from the switch indicate which position is

selected by the transmission manual shaft. The input voltage at the TCM is high when the switch is open and low when the switch is closed to

ground. The state of each input is displayed on the scan tool as IMS. The IMS input parameters represented are transmission range signal A, Signal

B, signal C, and signal P.

Conditions for Running the DTC

P182E

* The engine speed is greater than 400 RPM for 5 seconds.

* The ignition voltage is greater than 8.6 volts.

* Engine torque signal is valid.

* DTCs P0101, P0102, P0103, P0106, P0107, P0108, P0171, P0171, or P0172 are not set.

P1915

* No OSS DTCs P0722 or P0723 and are not Fault Active or Test Fail this Key ON.

* The transmission output shaft speed is less than 90 RPM or less.

* The ignition voltage is between 6.0 volts and 18.0 volts.

Conditions for Setting the DTC

P182E

The IMS does not indicate a valid Park, Reverse, Neutral or Drive Range gear position for 7 seconds.

2010 Cadillac CTS Sedan AWD V6-3.6L Page 658

2010 Cadillac CTS Sedan AWD V6-3.6L Page 658

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptors

DTC C0035 02

- Left Front Wheel Speed Sensor Circuit Short to Ground

DTC C0035 05

- Left Front Wheel Speed Sensor Circuit Short to Battery or Open

DTC C0035 0F

- Left Front Wheel Speed Sensor Circuit Erratic

DTC C0035 18

- Left Front Wheel Speed Sensor Circuit Signal Amplitude Less Than Minimum

DTC C0040 02

- Right Front Wheel Speed Sensor Circuit Short to Ground

DTC C0040 05

- Right Front Wheel Speed Sensor Circuit Short to Battery or Open

DTC C0040 0F

- Right Front Wheel Speed Sensor Circuit Erratic

DTC C0040 18

- Right Front Wheel Speed Sensor Circuit Signal Amplitude Less Than Minimum

DTC C0045 02

- Left Rear Wheel Speed Sensor Circuit Short to Ground

DTC C0045 05

- Left Rear Wheel Speed Sensor Circuit Short to Battery or Open

DTC C0045 0F

- Left Rear Wheel Speed Sensor Circuit Erratic

DTC C0045 18

- Left Rear Wheel Speed Sensor Circuit Signal Amplitude Less Than Minimum

DTC C0050 02

- Right Rear Wheel Speed Sensor Circuit Short to Ground

DTC C0050 05

- Right Rear Wheel Speed Sensor Circuit Short to Battery or Open

DTC C0050 0F

- Right Rear Wheel Speed Sensor Circuit Erratic

DTC C0050 18

- Right Rear Wheel Speed Sensor Circuit Signal Amplitude Less Than Minimum

Diagnostic Fault Information

2010 Cadillac CTS Sedan AWD V6-3.6L Page 879

2010 Cadillac CTS Sedan AWD V6-3.6L Page 879

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptors

DTC P0016

- Crankshaft Position (CKP) - Intake Camshaft Position (CMP) Correlation Bank 1

DTC P0017

- Crankshaft Position (CKP) - Exhaust Camshaft Position (CMP) Correlation Bank 1

DTC P0018

- Crankshaft Position (CKP) - Intake Camshaft Position (CMP) Correlation Bank 2

DTC P0019

- Crankshaft Position (CKP) - Exhaust Camshaft Position (CMP) Correlation Bank 2

Circuit/System Description

The engine control module (ECM) uses the crankshaft position (CKP) sensor and the camshaft position (CMP) sensor pulses to monitor the

correlation between the crankshaft and the camshaft position. An improper relative position can be caused by either engine timing or improper

indexing of the camshaft drive chain.

Conditions for Running the DTC

* Before the ECM can report DTC P0016, P0017, P0018, or P0019 failed, DTCs P0010, P0011, P0013, P0014, P0020, P0021, P0023, P0024,

P0335, P0336, P0338, P0341, P0342, P0343, P0346, P0347, P0348, P0366, P0367, P0368, P0391, P0392, P0393, P2088, P2089, P2090,

P2091, P2092, P2093, P2094, and P2095 must run and pass.

* The engine is operating for greater than 50 seconds.

* The engine coolant temperature is between 0-95掳C (32-203掳F).

* The calculated engine oil temperature is less than 120掳C (248掳F).

* DTC P0016, P0017, P0018, and P0019 run continuously once the above conditions are met for approximately 10 minutes.

Conditions for Setting the DTC

The ECM detects a deviation in the relationship between a camshaft and the crankshaft. The ECM detects the learned camshaft angle is greater than

10 degrees advanced or 10 degrees retarded in relationship to the crankshaft.

OR

The ECM detects the actual camshaft angle is advanced 15 degrees or retarded 21 degrees in relationship to the camshaft parked/reference position.

Action Taken When the DTC Sets

DTCs P0016, P0017, P0018, and P0019 are type B DTCs.

Conditions for Clearing the DTC

DTCs P0016, P0017, P0018, and P0019 are type B DTCs.

Diagnostic Aids

* Inspect the engine for any recent engine mechanical repairs. An incorrectly installed camshaft, camshaft actuator, camshaft sensor, crankshaft

sensor, or timing chain can cause this DTC to set.

* The presence of DTCs P0008 and P0009 along with P0016, P0017, P0018, and P0019 indicates a possible condition with the primary timing

chain and the alignment between both intermediate sprockets and the crankshaft. Or, the crankshaft reluctor wheel has moved and is no

longer referenced to top dead center (TDC).

* Observe the Desired Intake Camshaft Position and the Camshaft Position parameters with a scan tool before a DTC sets. This may help to

isolate whether a condition is specific to one camshaft, one bank, or caused by a condition with the primary crankshaft timing.

Reference Information

Schematic Reference

Engine Controls Schematics (LLT) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)Engine Controls Schematics

(LF1) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)

2010 Cadillac Truck SRX AWD V6-3.0L Page 173

2010 Cadillac Truck SRX AWD V6-3.0L Page 173

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptors

DTC B0083 01

- Left Front Impact Sensor Short to Battery

DTC B0083 02

- Left Front Impact Sensor Short to Ground

DTC B0083 04

- Left Front Impact Sensor Open

DTC B0083 05

- Left Front Impact Sensor High/Voltage Open

DTC B0083 0C

- Left Front Impact Sensor Low Current

DTC B0083 39

- Left Front Impact Sensor Internal Electronic Failure

DTC B0083 3A

- Left Front Impact Sensor Incorrect Component Installed

DTC B0083 71

- Left Front Impact Sensor Invalid Serial Data Received

DTC B0084 01

- Right Front Impact Sensor Short to Battery

DTC B0084 02

- Right Front Impact Sensor Short to Ground

DTC B0084 04

- Right Front Impact Sensor Open

DTC B0084 05

- Right Front Impact Sensor High/Voltage Open

DTC B0084 0C

- Right Front Impact Sensor Low Current

DTC B0084 39

- Right Front Impact Sensor Internal Electronic Failure

DTC B0084 3A

- Right Front Impact Sensor Incorrect Component Installed

DTC B0084 71

- Right Front Impact Sensor Invalid Serial Data Received

DTC B0085 01

- Left Front Side Impact Sensor Short to Battery

DTC B0085 02

- Left Front Side Impact Sensor Short to Ground

DTC B0085 04

- Left Front Side Impact Sensor Open

DTC B0085 05

- Left Front Side Impact Sensor High/Voltage Open

2010 Cadillac Truck SRX AWD V6-3.0L Page 69

2010 Cadillac Truck SRX AWD V6-3.0L Page 69

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptors

DTC B0014 01

- Driver Seat Side Air Bag Deployment Loop Short to Battery

DTC B0014 02

- Driver Seat Side Air Bag Deployment Loop Short to Ground

DTC B0014 04

- Driver Seat Side Air Bag Deployment Loop Open

DTC B0014 0D

- Driver Seat Side Air Bag Deployment Loop High Resistance

DTC B0014 0E

- Driver Seat Side Air Bag Deployment Loop Low Resistance

DTC B0015 01

- Driver Seat Belt Retractor Pretensioner Deployment Loop Short to Battery

DTC B0015 02

- Driver Seat Belt Retractor Pretensioner Deployment Loop Short to Ground

DTC B0015 04

- Driver Seat Belt Retractor Pretensioner Deployment Loop Open

DTC B0015 0D

- Driver Seat Belt Retractor Pretensioner Deployment Loop High Resistance

DTC B0015 0E

- Driver Seat Belt Retractor Pretensioner Deployment Loop Low Resistance

DTC B0016 01

- Left Roof Rail Air Bag Deployment Loop Short to Battery

DTC B0016 02

- Left Roof Rail Air Bag Deployment Loop Short to Ground

DTC B0016 04

- Left Roof Rail Air Bag Deployment Loop Open

DTC B0016 0D

- Left Roof Rail Air Bag Deployment Loop High Resistance

DTC B0016 0E

- Left Roof Rail Air Bag Deployment Loop Low Resistance

DTC B0019 01

- Passenger Instrument Panel Air Bag Deployment Loop Stage 1 Short to Battery

DTC B0019 02

- Passenger Instrument Panel Air Bag Deployment Loop Stage 1 Short to Ground

DTC B0019 04

- Passenger Instrument Panel Air Bag Deployment Loop Stage 1 Open

DTC B0019 0D

- Passenger Instrument Panel Air Bag Deployment Loop Stage 1 High Resistance

DTC B0019 0E

- Passenger Instrument Panel Air Bag Deployment Loop Stage 1 Low Resistance

2010 Cadillac Truck SRX AWD V6-3.0L Page 644

2010 Cadillac Truck SRX AWD V6-3.0L Page 644

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptors

DTC B3140 00

- Driver Unlock Switch Circuit

DTC B3150 00

- Driver Lock Switch Circuit

Diagnostic Fault Information

Circuit/System Description

The body control module (BCM) monitors the voltage level of the door lock and door unlock signal circuits. When the central door lock switch is

in the open position, the voltage level in the signal circuit will be near 0 V. When the central door lock switch is pressed to the lock or unlock

position, a signal will be sent to the BCM requesting a lock or unlock command.

Conditions for Running the DTC

The system voltage is 9-16 V.

Conditions for Setting the DTC

B3140 00

The BCM detects short to ground in the unlock signal circuit for greater than 60 seconds.

B3150 00

The BCM detects a short to ground in the lock signal circuit for greater than 60 seconds.

Action Taken When the DTC Sets

The door lock switch will malfunction.

Conditions for Clearing the DTC

* The DTC will be current for as long as the fault is present.

* When the fault is no longer present, the DTC will be a history DTC.

* A history DTC will clear after 50 ignition cycles.

Reference Information

Schematic Reference

Door Lock/Indicator Schematics (See: Body and Frame/Locks/Diagrams/Electrical Diagrams/Door Lock/Indicator Schematics)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)

Description and Operation

Power Door Locks Description and Operation (See: Body and Frame/Locks/Power Locks/Description and Operation)

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit

Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic

Procedures/Connector Repairs/Connector Repairs)

2010 Cadillac Truck SRX AWD V6-3.0L Page 188

2010 Cadillac Truck SRX AWD V6-3.0L Page 188

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptors

DTC B0083 01

- Left Front Impact Sensor Short to Battery

DTC B0083 02

- Left Front Impact Sensor Short to Ground

DTC B0083 04

- Left Front Impact Sensor Open

DTC B0083 05

- Left Front Impact Sensor High/Voltage Open

DTC B0083 0C

- Left Front Impact Sensor Low Current

DTC B0083 39

- Left Front Impact Sensor Internal Electronic Failure

DTC B0083 3A

- Left Front Impact Sensor Incorrect Component Installed

DTC B0083 71

- Left Front Impact Sensor Invalid Serial Data Received

DTC B0084 01

- Right Front Impact Sensor Short to Battery

DTC B0084 02

- Right Front Impact Sensor Short to Ground

DTC B0084 04

- Right Front Impact Sensor Open

DTC B0084 05

- Right Front Impact Sensor High/Voltage Open

DTC B0084 0C

- Right Front Impact Sensor Low Current

DTC B0084 39

- Right Front Impact Sensor Internal Electronic Failure

DTC B0084 3A

- Right Front Impact Sensor Incorrect Component Installed

DTC B0084 71

- Right Front Impact Sensor Invalid Serial Data Received

DTC B0085 01

- Left Front Side Impact Sensor Short to Battery

DTC B0085 02

- Left Front Side Impact Sensor Short to Ground

DTC B0085 04

- Left Front Side Impact Sensor Open

DTC B0085 05

- Left Front Side Impact Sensor High/Voltage Open