Signal Missing

Signal missing

Checking the start inhibitor status




- Ignition on
- Depress the brake pedal
- Read off the status of the start inhibitor.
Move the gear selector between the positions P, R, N and D.
In positions P and N the status should be "Start permitted". In other positions the status should be "Start not permitted".
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 wiring and sensors

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Checking wiring and sensors




- Ignition off.
Check connector A (16-pin) for the transmission control module (TCM). Check for contact resistance. Check for oxidation.
Check the cable between transmission control module (TCM) terminal #A5 (#A35) and engine control module (ECM) terminal #B15. Check for an open-circuit. Check for a short-circuit to ground.
Remedy as necessary.

Other information:
- Connecting the breakout box, AW55-50/51SN Connecting Breakout Box, Transmission Control Module (TCM)
- Transmission control module (TCM) Service and Repair
- Signal specification, AW55-50/51SN Signal Specification, Transmission Control Module (TCM)
- 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
- Read off the status of the start inhibitor.
Move the gear selector between the positions P, R, N and D.
In positions P and N the status should be "Start permitted". In other positions the status should be "Start not permitted".





Was the function correct?

Yes - VERIFIED

No - VERIFICATION FAILEDPAPER

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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 start inhibitor status

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