Signal Too High - Intermittent Fault

Signal too high. Intermittent fault

Checking wiring and connectors
Check the signal cable between control module terminal #A40 and terminal 1 on the connector for the engine coolant temperature (ECT) sensor. Check for an intermittent open-circuit. Check for an intermittent short-circuit to supply voltage.

Hint: With the ignition on and the engine coolant temperature (ECT) sensor connector disconnected, the voltage between terminal 1 and the ground terminal must be approximately 5 V.

Check the ground lead between control module terminal #A61 and terminal 2 on the connector for the engine coolant temperature (ECT) sensor. Check for an intermittent open-circuit.

Other information
- To connect the breakout box, see Connecting the breakout box Connecting the Breakout Box
- To access the control module, see Engine control module (ECM), replacing Service and Repair
- To access the engine coolant temperature (ECT) sensor, see Engine coolant temperature (ECT) sensor, replacing Service and Repair
- For information about signals, see Signal specification Signal Description / Specification
- Checking wiring and terminals Checking Wiring And Terminals.










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 - Fault Found

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Attempt New Test - Checking wiring and connectors

FAULT FOUND - DONE

DONE - DONE

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