Faulty Signal. Permanent Fault

Faulty signal. Permanent fault

Checking the connectors












Check the engine control module (ECM) and transmission control module (TCM) connectors. Check for contact resistance and oxidation according to Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault.
Check for loose or damaged terminal pins.
Reconnect the connectors.
Start the engine.
Read off the status of the diagnostic trouble code (DTC).





Is the status intermittent?

Yes - Verification

No - Checking wiring

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Checking wiring
Check the signal cables between engine control module (ECM) terminals 57 and 27 and transmission control module (TCM) terminals 14 and 27. Check for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault. Check for a short-circuit to supply voltage according to Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault. Check for a short-circuit to each other and for open-circuits according to Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault. Remedy if necessary.
If no problem is found in above troubleshooting, try changing Transmission control module (TCM).













Select Continue

Continue - Verification

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Verification




- Start the engine.
Read off the status of the diagnostic trouble code (DTC).





Is the status intermittent?

Yes - FAULT FOUND

No - Fault-tracing information

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Fault-tracing information

FAULT-TRACING FAILED - No Fault Found

Attempt New Test - Checking the connectors

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