Electronic Shift Module (ESM)

P0563-BATTERY VOLTAGE HIGH

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

Theory of Operation

The Shift Lever Assembly monitors ignition voltage. The DTC will set, if the monitored battery voltage rises above 16.0 volts.

- When Monitored:
Continuously with the ignition in the run position.

- Set Condition:
When the monitored battery voltage rises above 16.0 volts.





Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Initial Inspection and Diagnostic Overview.

1. CHECK FOR CHARGING SYSTEM DTCS
1. With the scan tool, read Engine DTCs.

NOTE: This includes any one trip faults.

Are there any Engine Charging System DTCs present?

Yes

- Testing and Inspection and perform the appropriate diagnostic procedure.
- Perform the NAG1 TRANSMISSION VERIFICATION TEST. NAG1 Transmission Verification Test.

No

- Go To 2

2. VEHICLE WAS JUMP STARTED INCORRECTLY
1. Verify if the vehicle was jump started by another vehicle using a 24-volt charging system or incorrectly jump started with the 12 volt battery in series.

Was the vehicle jump started by another vehicle?

Yes

- This is the cause of the DTC. Erase the DTC and return the vehicle to the customer.
- Perform the NAG1 TRANSMISSION VERIFICATION TEST. NAG1 Transmission Verification Test.

No

- Go To 3

3. CHECK SYSTEM VOLTAGE
1. Start the engine and let idle for at least 10 seconds.
2. With the scan tool, monitor system voltage.

Is the system voltage above 16V for more than 5 seconds?

Yes

- Testing and Inspection and perform the appropriate diagnostic procedure.
- Perform the NAG1 TRANSMISSION VERIFICATION TEST. NAG1 Transmission Verification Test.

No

- Go To 4

4. SHIFT LEVER ASSEMBLY
1. Reconnect all disconnected harness connectors.
2. With the scan tool, erase Shift Lever DTCs.
3. Start the engine and raise the engine speed to 2000 RPM.
4. With the scan tool, read Shift Lever DTCs.

Did the P0563-BATTERY VOLTAGE HIGH DTC reset?

Yes

- Replace the Shift Lever Assembly. Transmission Shifter - Removal.
- Perform the NAG1 TRANSMISSION VERIFICATION TEST. NAG1 Transmission Verification Test.

No

- Test Complete.