Signal Too High

Signal too high

Checking the wiring and component

Warning! Before fault-tracing can begin, the engine cooling fan (FC) connector must be disconnected to prevent the engine cooling fan (FC) engaging. Diagnostic trouble code (DTC) ECM-6110 Engine cooling fan (FC) low-speed signal may be stored. After fault-tracing the connector must be reconnected.




- Ignition off.
Check the resistance of the engine coolant temperature (ECT) sensor between terminals #1 and #2 (component side).
Check the signal cable between control module terminal #A4 (#A4) and engine coolant temperature (ECT) sensor terminal #1. Check for a short-circuit to ground.
If no faults are found and the fault is permanent, replace the engine coolant temperature (ECT) sensor.
Remedy as necessary.

Other information:
- To connect the breakout box / access the control module, see Connecting the breakout box Connecting the Breakout Box
- To access the engine coolant temperature (ECT) sensor, see Temperature sensor engine coolant, replacing Service and Repair
- For resistance values, see Component specifications Specifications
- For information about signals, see Signal specification Signal Specification
- 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
- Reconnect connectors, reinstall components etc.
- Ignition on
- Read off the engine coolant temperature (ECT) sensor.





Is the temperature within its permitted range?

Yes - Troubleshooting procedure complete

No - 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 wiring and component

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