CADILLAC

Saturday, January 2, 2021

2010 Cadillac Truck SRX AWD V6-3.0L Page 451

* Terminal 1 X2, K84 Keyless entry control module

* Terminal 5 X2, K84 Keyless entry control module

* Terminal 16, A13 Rear audio control module

* Terminal 1 X4, K40 Seat memory control module

* Terminal 44 X1, A11 Radio

* Terminal 9 X1, K36 Inflatable restraint sensing and diagnostic module

* Terminal 17 X1, K36 Inflatable restraint sensing and diagnostic module

* Terminal 3, K60 Steering column lock control module

* Terminal 5, K60 Steering column lock control module

* Terminal 3 X2, K101 Trailer interface control module

* Terminal 1, K82 Module telephone control module

* Terminal 1 X1, T11 Multimedia player interface module

瀚慖f the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.

5. If the circuits test normal, replace the appropriate control module.

Repair Instructions

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

Control Module References (See: Testing and Inspection/Programming and Relearning) for the appropriate control module replacement, setup,

and programming

B1330

DTC B1330

Diagnostic Instructions

* 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 B1330 03

- Device Power 2 Circuit Voltage Below Threshold

Diagnostic Fault Information

Circuit/System Description

The keyless entry control module monitor the system voltage through the battery positive (B+) voltage circuits.

Conditions for Running the DTC

* The voltage supplied to the control modules is in the range of 7-26 V.

* The ignition is ON.

Conditions for Setting the DTC

B1330 03

The control module detects a system voltage less than 8.4 V for 5 seconds.

Action Taken When the DTC Sets

* The control module immediately disables all outputs when an out of range voltage condition has been detected, with the exception of serial

data, which is disabled after a 3 minute delay.

* The setting of other DTCs is inhibited.

2010 Cadillac CTS Sedan AWD V6-3.6L Page 957

P0030, P0031, P0032, P0050, P0051, P0052

* The ignition voltage is between 10-18 volts.

* The engine speed is greater than 80 RPM, 240 RPM for LLT.

* The HO2S heater is commanded ON and OFF at least once during the ignition cycle.

* The HO2S heater is commanded ON-LLT only.

* The DTCs run continuously when the above conditions are met-5 seconds for LLT.

P0036, P0037, P0038, P0056, P0057, P0058

* The ignition voltage is between 10-18 volts.

* The engine speed is greater than 80 RPM.

* The HO2S heater is commanded ON and OFF at least once during the ignition cycle.

* The HO2S 2 is at operating temperature.

* The DTCs run continuously when the above conditions are met for greater than 500 mS.

Conditions for Setting the DTC

P0030, P0036, P0050, and P0056

The ECM detects an open in the heater circuits of the HO2S when the heater is commanded OFF. The condition exists for greater than 4 seconds or

a cumulative of 30 seconds.

P0031, P0037, P0051, and P0057

The ECM detects a short to ground in the heater circuits of the HO2S when the heater is commanded OFF. The condition exists for greater than 4

seconds or a cumulative of 30 seconds.

P0032, P0038, P0052, and P0058

The ECM detects a short to voltage in the heater circuits of the HO2S when the heater is commanded ON. The condition exists for greater than 4

seconds or a cumulative of 30 seconds.

Action Taken When the DTC Sets

DTCs P0030, P0031, P0032, P0036, P0037, P0038, P0050, P0051, P0052, P0056, P0057, and P0058 are Type B DTCs.

Conditions for Clearing the MIL/DTC

DTCs P0030, P0031, P0032, P0036, P0037, P0038, P0050, P0051, P0052, P0056, P0057, and P0058 are Type B DTCs.

Diagnostic Aids

* If the condition is intermittent, move the related harnesses and connectors, with the engine operating, while monitoring the scan tool Circuit

Test Status parameters for the component. The circuit status parameters change from OK or Not Run to Fault if there is a condition with the

circuit or a connection.

* An open fuse in the HO2S heater circuit may be caused by the heater element in one of the sensors. The condition may not be present until

the sensor operates for a period of time. If no fault is present in the heater circuit, monitor the amperage of each heater using the DMM to

determine if one of the heater elements is the cause of the open fuse. Inspect the sensor pigtail or the harness for contacting the exhaust

system.

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)

Connector End View Reference

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

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)

DTC Type Reference

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

(DTC) Type Definitions)

Friday, January 1, 2021

2010 Cadillac Truck SRX AWD V6-3.0L Page 1040

P0034

The ECM detects the bypass solenoid valve control circuit is shorted to ground.

P0035

The ECM detects the bypass solenoid valve control circuit is shorted to voltage.

Action Taken When the DTC Sets

DTC P0033, P0034, and P0035 are Type B DTCs.

Conditions for Clearing the DTC

DTC P0033, P0034, and P0035 are Type B DTCs.

Diagnostic Aids

If the condition is intermittent, move the related harnesses and connectors, with the engine operating, while monitoring the circuit status for the

component with a scan tool. The circuit status parameter changes from OK or Not Run to Malfunction if there is a condition with the circuit or a

connection.

Reference Information

Schematic Reference

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

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

Connector End View Reference

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

Description and Operation

Turbocharger System Description ()

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)

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

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

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

Repairs/Wiring Repairs)

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

Circuit/System Verification

Note: If any Turbocharger circuit DTC is set, the Bypass Solenoid Valve output control may not function. It may be necessary to clear the

DTCs with a scan tool to enable the output control.

1. Ignition ON, observe the DTC information with a scan tool. Verify that DTC P0234, P0299, P0236, P0237, P0238, P0244, P0245, or P0246

is not set.

瀚慖f a DTC is set, refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code Descriptions/Diagnostic Trouble

Code (DTC) List - Vehicle) for further diagnosis.

2. Ignition ON, command the Turbocharger Bypass Solenoid Valve between Inactive and Active with a scan tool. You should hear an audible

click.

3. Engine running, command the Turbocharger Bypass Solenoid Valve between Inactive and Active with a scan tool while observing the

following control circuit status parameters:

* Turbocharger Bypass Solenoid Valve Control Circuit High Voltage Test Status

2010 Cadillac CTS Sedan AWD V6-3.6L Page 477

The MSM must be powered and the heated seat must be enabled.

Conditions for Setting the DTC

B2425 0D, B2430 0D

By measuring current and voltage output to the seat heating elements every 10 seconds, the MSM calculates that the heating element resistance is

above the maximum resistance.

B2425 0E, B2430 0E

By measuring current and voltage output to the seat heating elements every 10 seconds, the MSM calculates that the heating element resistance is

below the minimum resistance.

Action Taken When the DTC Sets

The heated seat function for the affected seat will be disabled.

Conditions for Clearing the DTC

* The current DTC clears when the malfunction is no longer present, and the power mode changes to OFF then back to ACC or RUN.

* The history DTC will clear after 50 consecutive fault-free ignition cycles have occurred.

Reference Information

Schematic Reference

Heated/Cooled Seat Schematics (See: Body and Frame/Seats/Seat Temperature Element/Diagrams/Electrical Diagrams)

Connector End View Reference

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

Description and Operation

Heated/Vented Seat Description and Operation (See: Body and Frame/Seats/Seat Temperature Element/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 Testing

B2425 0D or B2425 0E

1. Ignition OFF, disconnect the X3 harness connector at the MSM.

2. Ignition ON, verify that a test lamp illuminates between the B+ circuit terminal 5 and ground.

瀚慖f the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.

3. Ignition OFF, connect the X3 harness connector at the MSM and disconnect the harness connector at the seat back heating element.

4. Test for 1.7 - 7.0 Ohms between the control circuit terminal A and control circuit terminal B.

瀚慖f less than the specified range, test for a short between the control circuits. If the circuits test normal, replace the seat back heating

element.

瀚慖f greater than the specified range, replace the seat back heating element.

5. Connect the harness connector at the seat back heating element and disconnect the X1 harness connector at the MSM.

Note: Element resistance must be measured twice to ensure that all failure conditions are simulated. First with the seat unoccupied, then with

the seat occupied.

6. Test for 1.7 - 7.0 Ohms between the control circuit terminal 6 and control circuit terminal 11.

瀚慖f less than the specified range, test for a short between the control circuits. If the circuits test normal, replace the seat cushion heating

2010 Cadillac Truck SRX AWD V6-3.0L Page 1398

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

mandated standards.

Action Taken When the DTC Sets

* DTCs P0300-P0306 are Type B DTCs.

* The ECM disables the fuel injector of the misfiring cylinder when a misfire is present.

Conditions for Clearing the DTC

DTCs P0300-P0306 are Type B DTCs.

Diagnostic Aids

* A misfire DTC could be caused by an excessive vibration from sources other than the engine. Inspect for the following possible sources:

- A tire or wheel that is out of round or out of balance

- Variable thickness brake rotors

- An unbalanced drive shaft

- Certain rough road conditions

- Transmission operation

- A damaged accessory drive component or belt; remove the belt and safely operate the engine to evaluate

* High resistance in the circuits of the injectors may set a misfire DTC without setting an injector DTC. Test the injector circuits of the affected

cylinder(s) for a high resistance if you suspect a condition.

* If the condition is intermittent, observing the scan tool IC Circuit Test and Fuel Injector Circuit Test Status parameters may help isolate the

condition. The circuit test status parameters will change from OK or Not Run to Fault if a condition exists.

2010 Cadillac CTS Sedan AWD V6-3.6L Page 583

B3435 02

The headlamp control module detects a short to ground on any of the left motor control circuits.

B3435 39

The headlamp control module detects an internal electronic failure.

B3435 54

The headlamp control module detects an overheating condition on any of the left motor control circuits.

B3440 00

The headlamp control module detects a short to voltage or an open/high resistance on any of the right motor control circuits.

B3440 02

The headlamp control module detects a short to ground on any of the right motor control circuits.

B3440 39

The headlamp control module detects an internal electronic failure.

B3440 54

The headlamp control module detects an overheating condition on any of the right motor control circuits.

Actions Taken When the DTC Sets

* When DTC B3435 or DTC B3440 sets, the headlamp control module will attempt to return the lamps to a nominal position and disable all

requests to all headlamp actuators.

* The driver information center (DIC) will display AFL Lamps Need Service.

Conditions for Clearing the DTC

* The condition responsible for setting the DTC no longer exists and the ignition is cycled.

* A history DTC will clear once 50 consecutive malfunction-free cycles have occurred.

Reference Information

Schematic Reference

Headlights/Daytime Running Lights (DRL) Schematics (See: Diagrams/Electrical Diagrams/Lighting and Horns/System

Diagram/Headlights/Daytime Running Lights (DRL) Schematics)

Connector End View Reference

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

Description and Operation

Exterior Lighting Systems Description and Operation (See: Lighting and Horns/Description and Operation/Exterior Lighting Systems 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 Testing

1. Ignition OFF, disconnect the harness connector at the appropriate headlamp.

2. Remove the AFS 15 A fuse.

3. Ignition OFF, scan tool OFF, test for 10 ohm -25k ohm between each control circuit terminal listed below and ground.

2010 Cadillac Truck SRX AWD V6-3.0L Page 1476

Circuit/System Verification

1. If DTC P0340, P0345, P0365, or P0390 are also set, diagnose those DTCs first

2. With the ignition OFF, inspect the engine wiring harnesses carrying the B23 camshaft position sensor circuits for the following conditions:

* Close routing of aftermarket electrical equipment

* Close to solenoids, motors, and relays

瀚慍orrect any wire harness routing or component placement conditions if it is determined to be a possible source of electrical interference.

3. Observe the following scan tool parameters are all incrementing:

* Exhaust Camshaft Position Active Counter Bank 1

* Intake Camshaft Position Active Counter Bank 1

* Exhaust Camshaft Position Active Counter Bank 2

* Intake Camshaft Position Active Counter Bank 2

4. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the

conditions that you observed from the Freeze Frame/Failure Records data.

Circuit/System Testing

1. Engine idling, move the related harnesses/connectors of the B23 camshaft position sensor while monitoring the scan tool Camshaft Position

Variance parameter. The Camshaft Position Variance parameter should not change when moving the harness/connectors.

瀚慖f the above condition exists, repair the harness/connectors as necessary.

2. Ignition OFF, inspect the B23 camshaft position sensor for correct installation.

瀚慖f the B23 camshaft position sensor is loose, inspect the sensor and the O-ring for damage and replace as necessary.

3. Disconnect the harness connector at the B23 camshaft position sensor.

4. Ignition OFF, all vehicle systems OFF, this may take 2 minutes, test for less than 5 ohm between the low reference circuit terminal B and

ground.

瀚慖f greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the K20

ECM.

5. Ignition ON, test for 4.8-5.2 V between the 5 V reference circuit terminal A and ground.

瀚慖f less than the specified range, test the 5 V reference circuit for a short to ground, or an open/high resistance. If the circuit tests normal,

replace the K20 ECM.

瀚慖f greater than the specified range, test the 5 V reference circuit for a short to voltage. If the circuit tests normal, replace the K20 ECM.

6. Test for 4.8-5.2 V between the signal circuit terminal C and ground.

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

the K20 ECM.

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

7. Ignition OFF, connect a 3 A fused jumper wire to the camshaft position signal circuit terminal C.

8. Ignition ON, momentarily touch the end of the fused jumper wire to ground while monitoring the scan tool camshaft position active counter.

The camshaft position active counter should increment.

瀚慖f the camshaft position active counter does not increment, replace the K20 ECM.

9. If all circuits test normal, replace the B23 camshaft position sensor.

Component Testing

Note: You must perform the Circuit/System Testing before proceeding with Component Testing.

1. Inspect the B23 camshaft position sensor for looseness and correct installation. Remove the camshaft position sensor from the engine and

inspect the sensor and the O-ring for damage.

瀚慖f the sensor is loose, incorrectly installed, or damaged, repair or replace the B23 crankshaft position sensor.

2. Connect the camshaft position sensor connector to the camshaft position sensor. Turn ON the ignition, with the engine OFF.

3. Ignition ON, observe the applicable camshaft position active counter parameter with a scan tool. Pass a steel object by the tip of the sensor