Signal Missing. Intermittent Fault

Signal missing. Intermittent fault

Intermittent fault




- Ignition off.
Check the transmission control module (TCM) and speed sensor connectors for contact resistance and oxidation according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
Check the power supply cable between transmission control module (TCM) terminal A59 and transmission connector terminal 16 for an intermittent open-circuit according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
Check the signal cable between transmission control module (TCM) terminal A41 and transmission connector terminal 19 for an intermittent open-circuit according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
Remedy as necessary.

Other information:
- To connect the breakout box, see Connecting the breakout box, 4T65EV-GT Connecting the Breakout Box.
- To disconnect the transmission control module (TCM), see Transmission control module (TCM), replacing, B5254T2, AW50/51 AWD, B5254T2, AW55-50/51SN Service and Repair.
- To disconnect transmission connector, see Connecting the breakout box, GM automatic transmissions, 4T65EV-GT Connecting the Breakout Box, GM Automatic Transmissions.
- For information about signals, see Signal specification, 4T65EV-GT Signal Specification.
- For information about signals to the transmission connector, see Signal description. Connector 4T65 EV/EV-GT, 4T65EV-GT Connector 4T65 EV/EV-GT.













Continue - Fault-tracing information

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Fault-tracing information




Information

Fault-tracing information
If the fault is intermittent, do not verify fault-tracing if the fault does not recur.
It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

Do you want to view the information again?

Yes - Attempt New Test

No - Exit fault-tracing

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FAULT FOUND - AFAULT FOUND

Attempt New Test - Intermittent fault

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