P0658

P0658-ACTUATOR SUPPLY VOLTAGE "A" CIRCUIT LOW

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

The EGR Valve receives 12.0 Volts from an internal driver in the Powertrain Control Module (PCM). The PCM monitors this internal power supply to the EGR Valve. The PCM illuminates the MIL Lamp immediately when the monitor runs and fails. The EGR Valve Driver is disabled and can no longer control the EGR Valve. The EGR Valve will default to the closed position. The PCM will turn off the MIL Lamp after the monitor runs and passes.

- When Monitored:
With the key on or the engine running.

- Set Condition:
The PCM detects low voltage at the EGR Valve driver circuit. The PCM is no longer able to control the EGR Valve.





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

1. CHECK FOR RELATED DTCs
1. Start the engine and allow it to idle for one minute.
2. With the scan tool, read all DTCs.

Are there any Low Voltage DTCs present?

Yes

- Go To 2

No

- Replace and program the Powertrain Control Module.
- Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Powertrain Verification Test.

2. VERIFY REPAIR
1. Repair the cause of the low battery voltage DTCs.
2. Turn the ignition on.
3. With the scan tool, erase DTCs.
4. Start the engine and allow it to idle for one minute.
5. With the scan tool, read all DTCs.

Did the DTC return?

Yes

- Replace and program the Powertrain Control Module.
- Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Powertrain Verification Test.

No

- Repair complete.
- Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Powertrain Verification Test.