Test Description

The numbers below refer to step numbers in diagnostic procedure.

1. 4
   
   This step determines if an open IGN E fuse is causing condition.
2. 5
   
   This step tests for a short to ground on ignition Voltage Supply circuit of fuel injector relay.
3. 6
   
   This step determines if one of the fuel injector relays is causing condition. If IGN E fuse opens when a fuel injector relay is installed, replace relay.
4. 7
   
   This step determines if AF fuel pump relay is causing condition. If IGN E fuse opens when AF fuel pump relay is installed, replace relay.
5. 8
   
   This step determines if AF ECM is causing condition. If IGN E fuse opens when harness connector of AF ECM is installed, replace AF ECM.
6. 9
   
   This step tests ignition voltage circuit of fuel injector relays.
7. 10
   
   This step tests battery voltage circuit of fuel injector relays.
8. 11
   
   This step tests battery voltage circuit of fuel injector relays for a short to ground. If test light illuminates, repair short to ground and replace fusible link.
9. 12
   
   This step tests battery voltage circuit of fuel injectors for a short to ground between fuel injector relay and fuel injectors. If test light illuminates, repair short to ground and replace fusible link.
10. 14
    
    This step tests fuel injector relays. If test light does not illuminate, inspect appropriate relay for proper terminal connections.