Fault-Tracing Information

Fault-tracing

Checking the status




- Start the engine.
Check whether the fault is permanent or intermittent. Read off the engine coolant temperature sensor signal. Check that the value is within its permitted range.
The fault is permanent if the value is not within its permitted range. If the value is within its permitted range, the fault is intermittent and not presently active.





Continue - Checking components and wiring

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Checking components and wiring








- Ignition off
Check the engine coolant temperature (ECT) sensor connector and terminals. Check for contact resistance and oxidation.
Check the engine coolant temperature (ECT) sensor resistance. Take readings between terminals #1 and #2.
Remedy as necessary.

Other information
- Connecting the breakout box, B6304T4 Breakout Box Connection, Engine Control Module (ECM)
- Signal specification, B6304T4 Signal Specification, Engine Control Module (ECM)
- Component specifications, B6304T4 [1][2]Computers and Control Systems
- Mass air flow (MAF) sensor, B6304T4 Service and Repair
- Checking wiring and terminals Checking Wiring and Terminals. Permanent Faults









Continue - Verification

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Fault-tracing information

Attempt New Test - Checking components and wiring

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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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VERIFICATION FAILED - Fault-tracing information

VERIFIED - FAULT FOUND

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