Operation CHARM: Car repair manuals for everyone.

Test Notes

You should enter this Pinpoint Test only when directed here.

This Pinpoint Test is intended to diagnose the following:
- Harness circuits: VPWR, GND and B(+) to FPDM Power Supply Relay in CCRM; B(+) and GND to FPDM; FPM; FP; Power-To-Pump; Fuel Pump Ground
- Inertia Fuel Shutoff (IFS) Switch
- Fuel Pump Driver Module (FPDM)
- Constant Control Relay Module (CCRM) (FPDM Power Supply Relay/Circuits)
- Powertrain Control Module (PCM)

DESCRIPTION
For additional information on the Fuel Pump Driver Module, refer to Fuel Delivery and Air Induction.


For additional information on the Fuel Pump (FP) circuit, refer to Description and Operation / EEC-V Software and Hardware / EEC-V Hardware / PCM Related Outputs.


For additional information on the Fuel Pump Monitor (FPM) circuit, refer to Description and Operation / EEC-V Software and Hardware / EEC-V Hardware / PCM Related Inputs.