2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 1621

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 1621

* 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 a crankshaft or camshaft position sensor DTC is set, the Camshaft Position Actuator output control will not function.

1. Ignition ON, observe the DTC information with a scan tool. Verify DTC P0335, P0336, P0340, and P0341 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 Camshaft Position Actuator to 10掳 while observing the following control circuit status parameters with a scan

tool:

* The CMP Actuator Solenoid Ckt Short To Ground Test Status

* The CMP Acutator Solenoid Ckt Open Test Status

* The CMP Actuator Solenoid Ckt Short To Volts Test Status

Each parameter should display OK or Not Run

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 Camshaft Position Sensor and Actuator Magnet jumper harness connector. Refer to Inline Harness Connector

End Views (See: Power and Ground Distribution/Multiple Junction Connector/Diagrams) for connector identification.

Note: Testing for steps 2-4 is performed on the ECM side of the jumper harness connector.

2. Ignition OFF for 1 minute, test for less than 5 ohm between the low reference circuit terminal E and ground.

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

Note: A test lamp must be used for this test. The control circuit is pulled-up to a low current voltage. A voltage on the control circuit is

normal.

3. Ignition ON, engine OFF, verify that a test lamp does not illuminate between the control circuit terminal D and ground.

瀚慖f the test lamp illuminates, test the control circuit for a short to voltage. If the circuit tests normal, replace the ECM.

4. Connect the DMM black lead to the control circuit terminal D. Connect the DMM red lead to B+. Set the DMM on the diode setting.

Command the CMP actuator solenoid ON and OFF with a scan tool. The DMM should transition from OL when commanded OFF to less

than 1 V when commanded ON.

瀚慖f the circuit voltage does not correspond to the specified values, test the control circuit for an open/high resistance or a short to ground. If

the circuit tests normal, replace the ECM.

Note: Testing for steps 5 and 6 is performed on the engine side of the jumper harness connector.

5. Ignition OFF, test for infinite resistance between the control circuit terminal D and ground.

瀚慖f not the specified value, repair the control circuit for a short to ground.

6. Test for 5.0-9.0 ohm between the control circuit terminal D and the low reference circuit terminal E.

瀚慖f less than the specified range, test for a short between the control circuit and the low reference circuit. If the circuits/connections test

normal, test or replace the Camshaft Position Actuator Magnet.

瀚慖f greater than the specified range, test the control circuit and the low reference for an open/high resistance. If the circuits/connections test

normal, test or replace the Camshaft Position Actuator Magnet.

7. If all circuits test normal, repair the poor connection at the camshaft position sensor jumper wire harness.