XB152 - Check FP Circuit For Intermittent Short to Ground

- Key "OFF".

- Disconnect Powertrain Control Module (PCM). Inspect for damaged or pushed out pins, corrosion, loose wires, etc. Service as necessary.

- Disconnect Variable Control Relay Module (VCRM). Inspect for damaged or pushed out pins, corrosion, loose wires, etc. Service as necessary.

- Connect a Digital Volt/Ohm Meter (DVOM) between Pin 18 and Pin 1 of the VCRM vehicle harness connector.

- While monitoring the DVOM resistance reading for an indication of a short to ground, perform the following:

- Shake, wiggle, bend the Fuel Pump (FP) circuit between the VCRM vehicle harness connector and the PCM vehicle harness connector. Also check the FP circuit to the Data Link Connector (DLC).

- Is a short to ground indicated?

Yes -- Isolate fault and service as necessary. Reconnect all components. Clear continuous memory. Clearing Diagnostic Trouble Codes

Rerun quick test. Quick Test Appendix (Detailed Testing Instructions)

No -- Unable to isolate fault at this time. Reconnect all components. For further diagnosis using the EEC-IV Monitor Box or Scan Tool, go to Normal Scan Data Values. For further diagnosis of this, or any other symptom, return to Diagnostic Routines. Symptom Related Diagnostic Procedures