Signal too low, permanent fault: Verification: Verification

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

Fig 1: Identifying Ignition On Position

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Fig 2: Identifying Connectors

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• Ignition off
• Reinstall the connectors, components etc.
• Ignition on.

  Read off the fuel pump input signal for the central electronic module (CEM) from the engine control module (ECM).

  Start the engine and check that the fuel pump (FP) input signal to the central electronic module (CEM) changes status.

  Fig 3: Identifying VCT2000 Diagnostic Tool

  Courtesy of VOLVO CARS OF NORTH AMERICA.

Does the status of the input signal change? 

• YES 

  VERIFIED:  Troubleshooting has been completed.

• NO 

  Refer to Information