Signal Too Low. Intermittent Fault

Signal too low. Intermittent fault

Checking wiring and connectors

Warning! Before fault-tracing can begin, the engine cooling fan (FC) relay 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.

Check signal cable between control module #A4 (#A4) and engine coolant temperature (ECT) sensor #1 for an intermittent open-circuit according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults and an intermittent short-circuit to supply voltage according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.

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

Check ground lead between control module #A60 (#A60) and engine coolant temperature (ECT) sensor #2 for an intermittent open-circuit according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.

Other information
- Connecting the breakout box/accessing the control module, see Connecting the breakout box, B5234T9, B5244T7 Connecting The Breakout Box.
- To access the engine coolant temperature (ECT) sensor, see Engine temperature sensor Engine Temperature Sensor.
- For resistance values, see Component specifications [1][2]Engine Control Module.
- For information about signals, see Signal specification Signal Specifications.














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

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