Fault-Tracing Information

Fault tracing

Checking the status




- Start the engine.
Read the diagnostic status and fault status for the diagnostic trouble code by selecting the diagnostic trouble code in the list.
Increase the engine speed a few times until the scan is "Implemented".
Check whether the fault is permanent or intermittent. Read off the diagnostic trouble code (DTC) fault status when the diagnostic status is "Completed".
The fault is permanent if the fault status is "Fault found". If the fault status is "No fault found" the fault is intermittent and not presently active.

Note! The fault status cannot change from "Fault found" to "No fault found" in the same operating cycle.





Continue - Checking components and wiring

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Checking components and wiring

Hint: Bank 1 (cylinder row nearest the front): cylinders 1, 3, 5 and 7.
Bank 2 (cylinder row furthest to the rear, nearest the passenger compartment): cylinders 2, 4, 6, and 8.








- Ignition off
- Disconnect the engine control module (ECM).
Check the signal cable between the control module and the connector for the diagnostic trouble codes (DTC) relevant camshaft position sensor. Check for a short-circuit to ground. Check for a short-circuit to supply voltage. Check for an open-circuit.
Measure between:
- Control module terminal #A33 (#A33) and camshaft position sensor terminal #3 inlet, bank 1 (ECM-P034000).
- Control module terminal #A34 (#A34) and camshaft position sensor terminal #3 inlet, bank 2 (ECM-P034500).
- Control module terminal #A31 (#A31) and camshaft position sensor terminal #3 exhaust, bank 1 (ECM-P036500).
- Control module terminal #A32 (#A32) and camshaft position sensor terminal #3 exhaust, bank 2 (ECM-P039000).
Check the voltage supply cable between the control module and the connector for the diagnostic trouble codes (DTC) relevant camshaft position sensor. Check for a short-circuit to ground. Check for a short-circuit to supply voltage. Check for an open-circuit.
Measure between:
- Control module terminal #A72 (#B12) and camshaft position sensor terminal #1.
Check the ground lead between the control module and the connector for the diagnostic trouble codes (DTC) relevant camshaft position sensor. Check for a short-circuit to ground. Check for a short-circuit to supply voltage. Check for an open-circuit.
Measure between:
- Control module terminal #A07 (#A7) and camshaft position sensor terminal #2.
Remedy as necessary.

Other information
- Connecting the breakout box, B8444S Connecting The Breakout Box, Engine Control Module (ECM)
- Knock sensor (KS), replacing, B8444S Service and Repair
- Checking wiring and terminals Checking Wiring And Terminals









Continue - Verification

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Verification




Verification

Hint: After carrying out the repair, check that the fault has been remedied.








- Ignition off
- Reconnect the connectors, components, etc.
- Start the engine.
- Read the diagnostic status and fault status for the diagnostic trouble code by selecting the diagnostic trouble code in the list.
Increase the engine speed a few times until the scan is "Implemented".
Check the fault status for the diagnostic trouble code when the scan is "Implemented". When the function is correct the fault status should be "No fault found" when the scan is implemented.





Is the function OK?

Yes - VERIFIED

No - VERIFICATION FAILED

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VERIFIED - FAULT FOUND

VERIFICATION FAILED - Fault-tracing information

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Fault-tracing information

Attempt New Test - Checking components and wiring

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