Test Description

The numbers below refer to step numbers in diagnostic procedures.

1. 1
   
   System Check must be performed before proceeding with diagnostic procedures. Failure to perform System Check will result in misdiagnosis.
2. 3
   
   The scan tool will command PCM to turn ON fuel pump and AF ECM to turn OFF AF fuel pump relay.
3. 4
   
   Fuel pump prime terminal is located in underhood fuse block.
4. 5
   
   Lock-off solenoid relay is controlled by PCM Fuel Pump Relay Control circuit.