CADILLAC: P0343

Showing posts with label P0343. Show all posts

Friday, December 11, 2020

2010 Cadillac CTS Sedan AWD V6-3.6L Page 779

P0343, P0346, P0347, P0348, P0366, P0367, P0368, P0391, P0392, P0393, P0521, P0522, P0523, P0638, P2100, P2101, or P2119 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. Engine idling, command the appropriate Camshaft Position Actuator from 0 degrees to 40 degrees and back to zero while observing the

appropriate scan tool Camshaft Position Variance parameters. The Camshaft Position Variance should be less than 2 degrees in each of the

commanded states.

3. 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. Ignition OFF, disconnect the harness connector at the appropriate Camshaft Position Actuator Solenoid Valve.

2. Ignition ON, load test for B+ between the ignition circuit terminal 1 and ground.

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

and the ignition circuit fuse is open, test all the components connected to the ignition circuit and replace as necessary.

Note: Use the J 35616-200 - Test Lamp for this test. If the J 35616-200 - Test Lamp is not available, use a test lamp that measures greater

than 20 ohm.

3. Connect a test lamp between the control circuit terminal 2 and B+.

4. Command the appropriate Camshaft Position Actuator Solenoid Valve ON with a scan tool.

Note: The voltage must be measured at the control side of the circuit.

5. Load test for less than 1 V between the control circuit terminal 2 and ground.

瀚慖f greater than the specified range, test the control circuit for an open/high resistance. If the circuit/connections test normal, replace the

ECM.

6. Remove the Camshaft Position Actuator Solenoid Valve. Verify the following conditions do not exist with the Camshaft Position Actuator

Solenoid Valve:

* Torn, restricted, mis-positioned, or missing screens at the CMP actuator solenoid

* Engine oil leak between the oil sealing lands of the CMP actuator solenoid. Inspect the lands of the CMP actuator solenoid for nicks.

* Oil seepage at the CMP actuator solenoid connector

瀚慖f a condition is found, replace Camshaft Position Actuator Solenoid Valve.

7. Ignition OFF, swap the Camshaft Position Actuator Solenoid Valve with a Camshaft Position Actuator Solenoid Valve that is operating

correctly.

Note: This step is testing the mechanical CMP actuator for the camshaft that set the DTC.

8. Engine idling. Command the appropriate Camshaft Position Actuator from 0 degrees to 40 degrees and back to zero while observing the

appropriate scan tool Camshaft Position Variance parameters. The Camshaft Position Variance should be less than 2 degrees in each of the

commanded states.

瀚慖f greater than the specified value, replace the mechanical camshaft position actuator.

9. If all circuits/connections test normal, test or replace the Camshaft Position Actuator Solenoid Valve.

Component Testing

1. Ignition OFF, disconnect the harness connector at the appropriate Camshaft Position Actuator Solenoid Valve.

2. Test for 7-12 ohm between the control terminal 2 and the ignition terminal 1 of the solenoid.

瀚慖f not within the specified range, replace the Camshaft Position Actuator Solenoid Valve.

3. Test for infinite resistance between each terminal and the solenoid housing.

瀚慖f not the specified value, replace the Camshaft Position Actuator Solenoid Valve.

Repair Instructions

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

* Camshaft Position Actuator Solenoid Valve Solenoid Replacement - Bank 1 (Right Side) Intake (See: Engine, Cooling and

Wednesday, November 25, 2020

2010 Cadillac CTS Sedan AWD V6-3.6L Page 781

P0023, 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.

* DTC P0016, P0017, P0018, P0019, P0335, P0336, or P0338 is not set.

* The engine is operating for greater than 1 seconds.

* The engine speed is greater than 520 RPM.

* The engine must accelerate such that the CMP actuator system is commanded from the park position to the phased position. This is

considered a cam control cycle. There must be a minimum of 2 cam control cycles for at least 2.5 seconds each in the phased position.

* DTCs P000A, P000B, P000C, P000D, P0011, P0014, P0021, and P0024 run continuously once the above conditions are met for greater than

600 seconds.

Conditions for Setting the DTC

* The ECM detects the difference between the desired camshaft position angle and the actual camshaft position angle is greater than 7-8

degrees.

* The ECM detects a slow response, a deviation greater than 1.5 degrees in time greater than 2 seconds, for the actual camshaft position angle

to match the desired position angle during the test.

* Either condition exists for greater than 1 second or a cumulative of 10 seconds.

Action Taken When the DTC Sets

DTCs P000A, P000B, P000C, P000D, P0011, P0014, P0021, and P0024 are type B DTCs.

Conditions for Clearing the DTC

DTCs P000A, P000B, P000C, P000D, P0011, P0014, P0021, and P0024 are type B DTCs.

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)

Description and Operation

Camshaft Actuator System Description (See: Powertrain Management/Computers and Control Systems/Description and Operation/Camshaft

Actuator System Description)

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)

Scan Tool Reference

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

Special Tools

* J 35616-200 - Test Lamp Kit

* For equivalent regional tools, refer to Special Tools (See: Powertrain Management/Computers and Control Systems/Tools and Equipment).

Diagnostic Aids

* The engine oil condition has a major impact on the camshaft actuator system.

* A low oil level condition may set this DTC. The engine may require an oil change. Inquire with the customer when the last oil change was

performed. You may also monitor the scan tool Engine Oil Life parameter. Advise the customer an oil change may be required.

* Inspect the engine for any recent engine mechanical repairs. An incorrectly installed camshaft, camshaft actuator, or timing chain can cause

this DTC to set.

Circuit/System Verification

Note: The engine oil level and the oil pressure are critical to the correct operation of the camshaft position (CMP) actuator system. Verify

Tuesday, February 18, 2020

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1301

2. Engine idling, observe the DTC information with a scan tool. DTC P0341, P0342, P0343, P0346, P0347, P0348, P0366, P0367, P0368,

P0391, P0392, or P0393 should not set.

3. 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. Ignition OFF, remove the fuse that supplies B+ to terminal 56-X2 of the ECM.

2. Disconnect the harness connector at the appropriate camshaft position sensor.

Note: The control module or the sensor may be damaged if the circuit is shorted to B+ voltage.

3. Test for 5 ohm or less between the low reference circuit terminal 1 and ground.

瀚慖f greater than the specified range, test the low reference circuit for an open/high resistance or for a short to voltage. If the

circuit/connections test normal, replace the ECM.

4. Install the fuse that supplies B+ to terminal 56-X2 of the ECM.

5. Ignition ON, test for greater than 4.8 V between the 5-volt reference circuit terminal 3 and ground.

瀚慖f less than the specified value, test the 5-volt reference circuit for an open/high resistance. If the circuits/connections test normal, replace

the ECM.

6. Test for 4.8-5.2 V between the signal circuit terminal 2 and ground.

瀚慖f the voltage is greater than specified range, test for a short to voltage in the signal circuit. If circuit/connections test normal, replace the

ECM.

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

circuit/connections test normal, replace the ECM.

7. If all circuits/connections test normal, replace the camshaft position sensor.

Repair Instructions

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

* Camshaft Position Sensor Replacement - Bank 2 (Left Side) Exhaust (See: Powertrain Management/Computers and Control

Systems/Camshaft Position Sensor/Service and Repair/Camshaft Position Sensor Replacement - Bank 2 (Left Side) Exhaust)

* Camshaft Position Sensor Replacement - Bank 2 (Left Side) Intake (See: Powertrain Management/Computers and Control

Systems/Camshaft Position Sensor/Service and Repair/Camshaft Position Sensor Replacement - Bank 2 (Left Side) Intake)

* Camshaft Position Sensor Replacement - Bank 1 (Right Side) Exhaust (See: Powertrain Management/Computers and Control

Systems/Camshaft Position Sensor/Service and Repair/Camshaft Position Sensor Replacement - Bank 1 (Right Side) Exhaust)

* Camshaft Position Sensor Replacement - Bank 1 (Right Side) Intake (See: Powertrain Management/Computers and Control

Systems/Camshaft Position Sensor/Service and Repair/Camshaft Position Sensor Replacement - Bank 1 (Right Side) Intake)

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

programming

P0351

DTC P0351-P0356, P2300, P2301, P2303, P2304, P2306, P2307, P2309, P2310, P2312, P2313, P2315, or P2316 (LAU)

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 Descriptors

DTC P0351

- Ignition Coil 1 Control Circuit

DTC P0352

- Ignition Coil 2 Control Circuit

Tuesday, January 7, 2020

2010 Cadillac CTS Sedan AWD V6-3.6L Page 1396

2. Engine idling, observe the DTC information with a scan tool. DTC P0341, P0342, P0343, P0346, P0347, P0348, P0366, P0367, P0368,

P0391, P0392, or P0393 should not set.

3. 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. Ignition OFF, remove the fuse that supplies B+ to terminal 56-X2 of the K20 ECM.

2. Disconnect the harness connector at the appropriate B23 camshaft position sensor.

Note: The control module or the sensor may be damaged if the circuit is shorted to B+ voltage.

3. Test for less than 5 ohm between the low reference circuit terminal 1 and ground.

瀚慖f greater than the specified range, test the low reference circuit for an open/high resistance or for a short to voltage. If the

circuit/connections test normal, replace the K20 ECM.

4. Install the fuse that supplies B+ to terminal 56-X2 of the K20 ECM.

5. Ignition ON, test for greater than 4.8 V between the 5 V reference circuit terminal 3 and ground.

瀚慖f less than the specified value, test the 5 V reference circuit for an open/high resistance. If the circuits/connections test normal, replace

the K20 ECM.

6. Test for 4.8-5.2 V between the signal circuit terminal 2 and ground.

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

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

replace the K20 ECM.

7. If all circuits/connections test normal, replace the B23 camshaft position sensor.