Circuit/System Verification
IMPORTANT:
An open or a short to voltage in the control circuit will cause both the Ckt. Open Test Status and the Ckt. Short Volts Test Status parameters to display Fault.
- Ignition ON, command the fuel pump relay ON and OFF with a scan tool while observing the following control circuit status parameters:
- Fuel Pump Relay Ckt. Short Gnd Test Status
- Fuel Pump Relay Ckt. Open Test Status
- Fuel Pump Relay Ckt. Short Volts Test Status
- Each parameter should toggle between OK and Not Run or Not Run and OK.