Fault-Tracing Information

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, Engine Control Module (ECM)
- 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 - VERIFIED

No - VERIFICATION FAILED

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VERIFIED - FAULT FOUND

VERIFICATION FAILED - Fault-tracing information

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Fault-tracing information

Attempt New Test - Checking components and wiring

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