Pinpoint Test Kc: Fuel Pump Control Module
WARNING: This page is about a different variant/trim than selected.
WARNING:
Before working on or disconnecting any of the fuel tubes or fuel system components, relieve the fuel system pressure to prevent accidental spraying of fuel. Fuel in the fuel system remains under high pressure, even when the engine is not running. Failure to follow this instruction may result in serious personal injury.
WARNING:
Do not smoke, carry lighted tobacco or have an open flame of any type when working on or near any fuel-related component. Highly flammable mixtures are always present and may be ignited. Failure to follow these instructions may result in serious personal injury.
WARNING:
Do not carry personal electronic devices such as cell phones, pagers or audio equipment of any type when working on or near any fuel-related component. Highly flammable mixtures are always present and may be ignited. Failure to follow these instructions may result in serious personal injury.
WARNING:
When handling fuel, always observe fuel handling precautions and be prepared in the event of fuel spillage. Spilled fuel may be ignited by hot vehicle components or other ignition sources. Failure to follow these instructions may result in serious personal injury.
WARNING:
Clean all fuel residue from the engine compartment. If not removed, fuel residue may ignite when the engine is returned to operation. Failure to follow this instruction may result in serious personal injury.
Normal Operation and Fault Conditions
Refer to the DTC Fault Trigger Conditions.
DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Condition |
|---|---|---|
| PCM P0230:00 | Fuel Pump Primary Circuit: No Sub Type Information | Sets when the PCM detects a concern from the fuel pump or fuel pump relay power (FPRPWR) circuits. |
| PCM P0231:00 | Fuel Pump Secondary Circuit Low: No Sub Type Information | Sets when the PCM commands the fuel pump on and the voltage from the fuel pump monitor circuit is not detected. |
| PCM P0232:00 | Fuel Pump Secondary Circuit High: No Sub Type Information | Sets when the PCM detects voltage from the fuel pump monitor circuit while the fuel pump is commanded off. The fuel pump monitor circuit is wired to a pull-up voltage inside the PCM. The fuel pump monitor circuit goes high if, with the KOEO and the fuel pump commanded off, the fuel pump monitor/fuel pump power circuit loses its path to ground through the fuel pump. The fuel pump monitor circuit also goes high if the fuel pump monitor /fuel pump power circuit is short to voltage. |
| PCM P025A:00 | Fuel Pump Module "A" Control Circuit/Open: No Sub Type Information | Sets when the PCM detects an open, short to voltage or short to ground from ground the fuel pump command. When the PCM commands the fuel pump ON, the PCM is able to detect a short to voltage on the fuel pump command circuit. When the PCM commands the fuel pump OFF, the PCM is able to detect an open circuit or a short to ground from the fuel pump command circuit. |
| PCM P025B:00 | Fuel Pump Module "A" Control Circuit Range/Performance: No Sub Type Information | Sets when the PCM detects the fuel pump control module is still reporting an invalid duty cycle or frequency from the PCM after a calibrated amount of time. The fuel pump control module monitors the duty cycle and frequency of the signal it receives from the PCM. The fuel pump control module determines if the signal from the PCM on the fuel pump command circuit is a valid duty cycle and frequency. If the duty cycle or frequency is invalid, the fuel pump control module sends a 20% duty cycle signal on the fuel pump monitor circuit to report the concern to the PCM. |
| PCM P025C:00 | Fuel Pump Module "A" Control Circuit Low: No Sub Type Information | Sets when the PCM detects a short to ground from the fuel pump command circuit. When the PCM commands the fuel pump ON, the PCM is able to detect a short to voltage from the fuel pump command circuit. When the PCM commands the fuel pump OFF, the PCM is able to detect an open circuit or a short to ground from the fuel pump command circuit. |
| PCM P025D:00 | Fuel Pump Module "A" Control Circuit High: No Sub Type Information | Sets when the PCM detects the fuel pump command circuit is open or short to voltage. When the PCM commands the fuel pump on, the PCM is able to detect a short to voltage from the fuel pump command circuit. When the PCM commands the fuel pump off, the PCM is able to detect an open circuit or a short to ground from the fuel pump command circuit. |
| PCM P027B:00 | Fuel Pump Module "B" Control Circuit Range/Performance: No Sub Type Information | Sets when the PCM detects the fuel pump control module 2 is reporting an invalid duty cycle or frequency from the PCM after a calibrated amount of time. The fuel pump control module 2 monitors the duty cycle and frequency of the signal it receives from the PCM. The fuel pump control module 2 determines if the signal from the PCM from the fuel pump command circuit is a valid duty cycle and frequency. If the duty cycle or frequency is invalid, the fuel pump control module 2 sends a 20% duty cycle signal on the FPM2 circuit to report the concern to the PCM. |
| PCM P0627:00 | Fuel Pump "A" Control Circuit/Open: No Sub Type Information | Sets when the PCM detects the fuel pump control module is reporting a concern with the fuel pump module or secondary circuits after a calibrated amount of time. The fuel pump control module monitors the fuel pump module and secondary circuits for a concern. If the fuel pump control module detects a concern with the fuel pump module or secondary circuits, the fuel pump control module sends an 80% duty cycle signal on the fuel pump monitor circuit to report the concern to the PCM. |
| PCM P064A:00 | Fuel Pump Control Module "A": No Sub Type Information | Sets when the PCM detects the fuel pump control module has an internal concern. Clear the PCM Diagnostic Trouble Codes (DTCs). Repeat the self-test. If the DTC is retrieved again, install a new fuel pump control module. Refer to the Fuel Charging And Controls article . |
| PCM P166A:00 | Restraints Deployment Communication Circuit: No Sub Type Information | Sets when the PCM detects an open or short from the impact event signal circuit. |
| PCM P2632:00 | Fuel Pump "B" Control Circuit/Open: No Sub Type Information | Sets when the PCM detects the fuel pump control module 2 is reporting a concern with the fuel pump module or secondary circuits after a calibrated amount of time. The fuel pump control module 2 monitors the fuel pump module and secondary circuits for a concern. If the fuel pump control module 2 detects a concern with the fuel pump module or secondary circuits, the fuel pump control module 2 sends an 80% duty cycle signal on the fuel pump monitor 2 circuit to report the concern to the PCM. |
| PCM P26EA:00 | Fuel Pump Control Module "B": No Sub Type Information | Sets when the PCM detects the fuel pump control module 2 has an internal concern. Clear the PCM Diagnostic Trouble Codes (DTCs). Repeat the self-test. If the DTC is retrieved again, install a new fuel pump control module 2. Refer to Fuel Charging And Controls article . |
| PCM U0109:00 | Lost Communication With Fuel Pump Control Module "A": No Sub Type Information | Sets when the PCM does not detect a duty cycled signal from the fuel pump monitor circuit after a calibrated amount of time. The PCM monitors the fuel pump monitor circuit for the presence of a duty cycled signal. If the fuel pump monitor circuit is fixed at a low or high voltage, the PCM begins to increment a counter. |
| PCM U016C:00 | Lost Communication With Fuel Pump Control Module "B": No Sub Type Information | Sets when the PCM does not detect a duty cycled signal from the fuel pump monitor 2 circuit after a calibrated amount of time. The PCM monitors the fuel pump monitor 2 circuit for the presence of a duty cycled signal. If the fuel pump monitor 2 circuit is fixed at a low or high voltage, the PCM begins to increment a counter. |
| PCM U210B:00 | Lost Communication Between Fuel Pump Control Module "A" and Restraints Control Module: No Sub Type Information | Sets when the PCM detects the fuel pump control module is reporting an invalid duty cycle or frequency from the RCM after a calibrated amount of time. The fuel pump control module monitors the duty cycle and frequency of the signal it receives from the RCM. The fuel pump control module determines if the signal on the event notification signal circuit from the RCM is a valid duty cycle and frequency. If the duty cycle or frequency is invalid, the fuel pump control module sends a 40% duty cycle signal on the fuel pump monitor circuit to report the concern to the PCM. |
Possible Sources
- Fuel pump circuitry concern
- Emergency notification signal circuitry concern
- Fuel pump control module relay
- Fuel pump control module (9D370)
- Fuel pump (9H307)
- IFS switch (9341)
- RCM
- PCM (12A650)