Fault-Tracing

Fault-tracing

Checking the status




Check whether the fault is permanent or intermittent by reading the signals from the fuel, outside and engine temperature sensors.
- Start the engine.
Check that the fuel temperature is within its permitted range. The fuel temperature should not be lower than the outdoor temperature and a maximum of 40 °C above the engine temperature.
The fault is permanent if the signal is incorrect. The fault is intermittent if the signal is correct.

Hint: Remove the fuel temperature sensor, but let the connector remain connected. The fuel temperature sensor is integrated in the fuel pressure sensor. The sensor should then show the same temperature as the outdoor temperature.










Continue - Checking the component and wiring

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Checking the component and wiring








- Ignition off.
- Disconnect the fuel temperature sensor connector.
- Check the connectors. Check for loose connections. Check for contact resistance. Check for oxidation.
Check the resistance of the sensor between #1 and #2 (to the sensor).
Remedy as necessary.

Other information
- Connecting the breakout box, B5244T5, B5254T2 Connecting the Breakout Box
- Signal specification Signal Description / Specification
- Component specifications Specifications
- Fuel pressure sensor, replacement, B5244T5, B5254T2 Service and Repair
- Checking wiring and terminals Checking Wiring And Terminals














Continue - Verification

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Verification




Verification

Verification

Hint: After carrying out the repair, check that the fault has been remedied.








- Ignition off
- Reconnect the connectors, reinstall components etc.
- Ignition on.
Read off the fuel temperature sensor signal. Check that the signal is within its permitted range.





Is the value OK?

Yes - VERIFIED

No - VERIFICATION FAILED

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VERIFICATION FAILED - Fault-tracing information

VERIFIED - Fault Found

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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 - FAULT-TRACING FAILED

No - Attempt New Test

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FAULT-TRACING FAILED - FAULT-TRACING FAILED

Attempt New Test - Checking the status

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