P023F

P023F-FUEL PUMP RELAY 2 CONTROL CIRCUIT





For a complete wiring diagram, refer to the Wiring Information Electrical Diagrams.

- When Monitored:
With ignition on. Battery voltage above 10 volts.

- Set Condition:
The actual Fuel Pump Relay 2 state is not equal to the desired Fuel Pump Relay 2 state. One Trip Fault. Three good trips to turn off the MIL.





WARNING: On vehicles equipped with the high voltage system, you must thoroughly read and follow all High Voltage Safety procedures. In addition, before performing any diagnostic or service procedure near a high voltage component, you must perform the High Voltage Power Down. Failure to follow these instructions may result in possible serious or fatal injury

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Pre-Diagnostic Troubleshooting Procedure.

1. ACTIVE DTC
1. Ignition on, engine not running.
2. With a scan tool, select View DTCs.

Is the DTC Active at this time?

Yes

- Go To 2

No

- Perform the INTERMITTENT CONDITION diagnostic procedure. Intermittent Condition Test.

2. (K317) FUEL PUMP RELAY 2 CONTROL CIRCUIT SHORTED TO VOLTAGE




1. Stop the Fuel pump relay 2 actuation.
2. Turn the ignition off.
3. Disconnect the C3 PCM harness connector.
4. Remove the Fuel pump 2 Relay from the PDC.
5. Ignition on, engine not running.
6. Measure the voltage on the (K317) Fuel pump relay 2 Control circuit at Fuel Pump Relay 2 Relay terminal connector in the PDC.

Is there any voltage present?

Yes

- Repair the short to voltage in the (K317) Fuel Pump Relay 2 Control circuit.
- Perform the POWERTRAIN VERIFICATION TEST. Powertrain Verification Test.

No

- Go To 3

3. FUEL PUMP RELAY 2 OPERATION




1. Turn the ignition off.
2. Reconnect the C3 PCM harness connector.
3. Ignition on, engine not running.
4. Using the scan tool in the PCM, actuate the Fuel Pump Relay 2.
5. With a 12-volt test light connected to battery voltage, probe the (K317) Fuel Pump Relay 2 Control circuit relay terminal in the PDC harness connector.

Does the test light illuminate brightly and flash on and off?

Yes

- Replace the Fuel Pump Relay 2.
- Perform the POWERTRAIN VERIFICATION TEST. Powertrain Verification Test.

No

- Go To 4

4. FUEL PUMP RELAY 2 CONTROL OPERATION FROM THE PCM




1. Turn the ignition off.
2. Disconnect the C1 PDC harness connector.
3. Ignition on, engine not running.
4. Using the scan tool in the PCM, actuate the Fuel Pump Relay 2.
5. With a 12-volt test light connected to battery voltage, probe the (K317) Fuel Pump Relay 2 Control circuit in the C1 PDC harness connector.

Does the test light illuminate brightly and flash on and off?

Yes

- NOTE: Before continuing, check the PDC harness connector terminals for corrosion, damage, or terminal push out. Repair as necessary.
If OK, replace the PDC.
- Perform the POWERTRAIN VERIFICATION TEST. Powertrain Verification Test.

No

- Go To 5

5. (K317) FUEL PUMP RELAY 2 CONTROL CIRCUIT OPEN




1. Turn the ignition off.
2. Disconnect the C3 PCM harness connector.

CAUTION: Do not probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals resulting in poor terminal to pin connection. Install the PCM Pinout Box 8815 to perform diagnosis.

3. Measure the resistance of the (K317) Fuel pump relay 2 Control circuit from the PDC harness connector to the appropriate terminals of the PCM Pinout Box 8815.

Is the resistance below 5.0 Ohms?

Yes

- Go To 6

No

- Repair the open in the (K317) Fuel Pump Relay 2 Control circuit.
- Perform the POWERTRAIN VERIFICATION TEST. Powertrain Verification Test.

6. (K317) FUEL PUMP RELAY 2 CONTROL CIRCUIT SHORTED TO GROUND




1. Measure the resistance between ground and the (K317) Fuel pump relay 2 Control circuit at the C1 PDC harness connector.

Is the resistance below 100 Ohms?

Yes

- Repair the short to ground in the (K317) Fuel Pump Relay 2 Control circuit.
- Perform the POWERTRAIN VERIFICATION TEST. Powertrain Verification Test.

No

- Go To 7

7. POWERTRAIN CONTROL MODULE (PCM)
1. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the related PDC and the Powertrain Control Module (PCM).
2. Look for any chafed, pierced, pinched, or partially broken wires.
3. Look for broken, bent, pushed out or corroded terminals. Verify that there is good pin to terminal contact in the PDC and Powertrain Control Module connectors.
4. Search for any Technical Service Bulletins that may apply.

Were there any problems found?

Yes

- Repair as necessary.
- Perform the POWERTRAIN VERIFICATION TEST. Powertrain Verification Test.

No

- Replace and program the Powertrain Control Module.
- Perform the POWERTRAIN VERIFICATION TEST. Powertrain Verification Test.