Circuit/System Testing
WARNING: This page is about a different variant/trim than selected.
NOTE:
You must complete Circuit/System Verification before proceeding with Circuit/System Testing
- Ignition OFF, disconnect the harness connector at the appropriate Q6 Camshaft Position Actuator Solenoid Valve, ignition ON.
- Verify a test lamp illuminates between the control circuit terminal 2 or B and ground when commanding the appropriate Camshaft Position Actuator Solenoid Valve On with a scan tool.
- If the test lamp does not illuminate
- Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
- Test for less than 2 Ω in the control circuit end to end.
- If 2 Ω or greater, repair the open/high resistance or short to ground in the circuit.
- If less than 2 Ω, replace the K20 Engine Control Module.
- If the test lamp illuminates
- Ignition OFF.
- Remove the appropriate Q6 Camshaft Position Actuator Solenoid Valve. Inspect the Camshaft Position Actuator Solenoid Valve and mounting area for the following conditions:
- For a torn, restricted, incorrect positioned or missing screens at the Q6 Camshaft Position Actuator Solenoid Valve
- For engine oil leaks between the oil sealing lands of the Q6 Camshaft Position Actuator Solenoid Valve
- For oil seepage at the Q6 Camshaft Position Actuator Solenoid Valve connector
- If a condition is found
Replace the Q6 Camshaft Position Actuator Solenoid Valve.
- If a condition is not found
- If a condition is found
- Exchange the suspected Q6 Camshaft Position Actuator Solenoid Valve with a Q6 Camshaft Position Actuator Solenoid Valve that is operating correctly.NOTE: This step is testing the mechanical operation of the camshaft position actuator solenoid valve that set the DTC.
- Engine Running.
- Command the appropriate camshaft position actuator from 0 degrees to 20 degrees and back to zero while observing the appropriate scan tool Intake/Exhaust Camshaft Position Variance parameters. The Intake/Exhaust Camshaft Position Variance should be less than 2 degrees in each of the commanded states.
- If the Camshaft Position Variance parameter is greater than 2 degrees
Replace or repair the mechanical camshaft position actuator
- If the Camshaft Position Variance parameter is less than 2 degrees
- If the Camshaft Position Variance parameter is greater than 2 degrees
- Test or replace the Q6 Camshaft Position Actuator Solenoid Valve.