Electronic Shift Module (ESM)

P0563-BATTERY VOLTAGE HIGH

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

- 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 NAG1 Pre-Diagnostic Troubleshooting procedure before proceeding. Testing and Inspection

Theory of Operation

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

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

- Refer to DTC Based Diagnostics and perform the appropriate diagnostic procedure.
- Perform NAG1 TRANSMISSION VERIFICATION TEST. 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 NAG1 TRANSMISSION VERIFICATION TEST. 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

- Refer to DTC Based Diagnostics and perform the appropriate diagnostic procedure.
- Perform NAG1 TRANSMISSION VERIFICATION TEST. 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
- Perform NAG1 TRANSMISSION VERIFICATION TEST. Transmission Verification Test

No

- Test Complete.