Fault-Tracing

Fault tracing ECM-P011800

Checking the status




- Start the engine.
Check whether the fault is permanent or intermittent by reading the signal of the engine temperature sensor. Check that the value is feasible.
If the value is not feasible, the fault is permanent. If the value is feasible, the fault is intermittent and not currently active.





Continue - Checking components and wiring

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Checking components and wiring








- Ignition off
- Disconnect the engine control module (ECM).
Check the signal cable with regard to short circuit to supply voltage. Check the signal cable with regard to open circuit.
Measure between control module terminal #A68 (#B8) and engine temperature sensor terminal #1.
Remedy as necessary.

Other information
- Connecting the breakout box, B8444S Connecting the Breakout Box
- Signal specification, engine control module (ECM), B8444S Signal Specification
- Mass air flow (MAF) sensor, replacing, B8444S Service and Repair
- 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
- Reinstall the connectors, components etc.
- Ignition on
Read the engine temperature sensor signal by clicking the VCT2000 symbol.
Check that the signal corresponds with the engine temperature.





Does the signal correspond to the engine temperature?

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 components and wiring

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