Fault-Tracing

Fault tracing ECM-P066100

Checking the status




- Ignition on
Activate the control valve for variable intake.
Check if the fault is permanent or intermittent.
A clicking noise is heard from the valve at activation.
The fault is permanent if the valve does not activate. If the valve activates this indicates that the fault is intermittent and not presently active.





Continue - Checking components and wiring

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Checking components and wiring




- Ignition off
Check the control valve connector and terminals. Check for contact resistance and oxidation.
Check the control valve between control valve terminals #1 and #2. Check the resistance.
Disconnect the engine control module (ECM).
Check the signal cable for the control valve. Check for a short-circuit to ground. Check for an open-circuit.
Take readings between control module terminal #A95 (#B35) and control valve terminal #2.
Check the supply cable for the control valve. Check for an open-circuit.
Take readings between control module terminal #B04 (#C04) and control valve terminal #1.
Remedy as necessary.

Other information
- Connecting the breakout box, B8444S Connecting the Breakout Box
- Component specifications, B8444S [1][2]Computers and Control Systems
- 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.
- Ignition on
- Click the VCT2000 symbol to activate the control valve.
Check that the control valve clicks at activation





Is the function OK?

Yes - Troubleshooting procedure complete

No - Fault-tracing information

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Fault-tracing information




Information

Fault-tracing information
The fault should have been detected and remedied. As this is not the case fault-tracing has failed.
Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Do you want to exit fault-tracing?

Yes - Exit Fault-tracing

No - Attempt New Test

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Attempt New Test - Checking components and wiring

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