Test Description
WARNING: This page is about a different car, the 2003 Pontiac Vibe. However, it is still accessible from the selected car via links, so may be relevant.
The numbers below refer to the step numbers on the diagnostic procedures.
- 1
The Diagnostic System Check - Engine Controls prompts the technician to complete some basic checks and store the freeze frame data on the scan tool, if applicable. This creates an electronic copy of the data taken when the fault occurred. The information is then stored in the scan tool for later reference. - 2
This step checks for the operation of the fuel pump. Fuel pump operation is difficult to hear without rear seat cushion removal. - 5
This step checks for the operation of the circuit opening relay. The circuit opening relay is located in the Instrument Panel Fuse Block and makes an audible click when turning ON and OFF. - 7
This step checks the control circuit of the fuel pump relay. - 9
The most likely location of an open circuit is between the splice and circuit opening relay terminal No. 2. An inoperative EFI relay would cause no MIL operation. The EFI relay is diagnosed in the No Malfunction Indicator Light diagnostic procedures. - 10
This step checks for a fault in the fuel pump or the circuit from the circuit opening relay to the fuel tank. The vehicle should start and run if the only fault was with the circuit opening relay.