P0563

P0563-BATTERY VOLTAGE HIGH

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

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

- Set Condition:
The battery voltage detected by the Engine Control Module (ECM) is greater than a calibrated value.





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

1. P0622 PRESENT
1. With the scan tool, read DTCs.

Is P0622 set?

Yes

- Repair the P0622 first. P0622
- Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Powertrain Verification Test.

No

- Go To 2

2. P2503 PRESENT
1. With the scan tool, read DTCs.

Is P2503 set?

Yes

- Repair the P2503 first. P2503
- Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Powertrain Verification Test.

No

- Go To 3

3. P2504 PRESENT
1. With the scan tool, read DTCs.

Is P2504 set?

Yes

- Repair the P2504 first. P2504
- Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Powertrain Verification Test.

No

- Go To 4

4. BATTERIES IMPROPERLY INSTALLED
1. Disconnect the ECM harness connectors.
2. Measure the battery voltage between the positive circuits and ground of the ECM harness connector.

Is the voltage less than 19 volts?

Yes

- Go To 5

No

- Install the battery system correctly.
- Perform POWERTRAIN VERIFICATION TEST - 6.7L. Powertrain Verification Test.

5. ENGINE CONTROL MODULE (ECM)
1. Reconnect the battery terminals.
2. Measure and record the voltage between battery positive pins of the ECM connector and the battery negative circuits of the ECM harness connector.
3. Reconnect the ECM harness connectors.
4. Use the scan tool to measure and record battery voltage.

Are the readings within 3 volts of each other?

Yes

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

No

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