Test Description

The number below refers to the step number in the diagnostic procedures.

1. 2
   
   Using scan tool, command both ON and OFF states. Repeat commands as necessary.
2. 3
   
   This step determines if condition is located on coil side or switch side of circuit.
3. 4
   
   This step verifies that PCM is providing voltage to fuel pump relay.
4. 5
   
   This step tests for an open in ground circuit to fuel pump relay.
5. 6
   
   This step determines if voltage is constantly being applied to fuel pump relay.
6. 13
   
   This step determines if condition with circuit is intermittent. If fuse does not open, inspect supply voltage circuit between fuse and fuel pump for an intermittent condition.
7. 15
   
   Use the same amperage fuse in jumper as is used to protect fuel pump circuit.
8. 17
   
   Inspect splice pack which contains fuel pump ground and other ground circuits. Be certain all connections within splice pack are clean and tight.