Fault-Tracing Information

Fault-tracing

Checking the status




- Ignition on.
Activate the upper primary actuator.
Check if the fault is permanent or intermittent.
Check that the throttle unit is activated.

Hint: It may be necessary to remove the throttle unit from the induction pipe to ensure proper functionality.

The fault is permanent if the function is faulty.
If the function is correct, this is an indication that the fault was present previously but is not active at the moment, i.e. an intermittent fault.





Continue - Checking the component and wiring

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Checking the component and wiring
Check the voltage on throttle unit connector #3 to the system relay. The voltage must be approximately battery voltage when the ignition is on.
Check signal cable for an open-circuit and short-circuit to supply voltage.
Take readings between:
- Engine control module (ECM) terminal #A38 (#A38) and throttle unit terminal #1.
Remedy as necessary.

Other information
- 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.
- Reinstall the connectors, components etc.
- Ignition on.
Activate the upper primary actuator.
Check that the throttle unit is activated.

Hint: It may be necessary to remove the throttle unit from the induction pipe to ensure proper functionality.





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




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 the component and wiring

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