Signal Too Low

Signal too low

Checking the status




- Ignition on.
Check whether the fault is permanent or intermittent. Read off the diagnostic trouble code (DTC) fault status when the diagnostic status is "Completed".
The fault is permanent if the fault status is "Fault found". The fault is intermittent if the fault status is "No fault detected".










Continue - Checking the component and wiring

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Checking the component and wiring
Check the cable between engine control module (ECM) terminal #A94 (#B34) and fuel pressure sensor terminal #4. Check for a short-circuit to ground.
Remedy as necessary.

Other information
- Connecting the breakout box Connecting The Breakout Box, Engine Control Module (ECM)
- Signal specification Signal Specification, Engine Control Module (ECM)
- Pressure sensor, fuel rail (FRP) 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
- Reinstall the connectors, components etc.
- Engine idling.
Read off the signal from the fuel pressure sensor.
Check that the signal is within its permitted range. The normal value is 480 ± 5 kPa when idling.

Note! The signal indicates absolute pressure.









Is the signal within its permitted range?

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 - Exit Fault-Tracing

No - Attempt New Test

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Attempt New Test - Checking the status

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