NAG1 Shifter - ESM (Column Shift)

P0563-BATTERY VOLTAGE HIGH - ESM (COLUMN SHIFT)





For a complete wiring diagram Refer to Diagrams/Electrical Electrical Diagrams


Theory of Operation


The Electronic Shift Module (ESM) monitors ignition voltage. The DTC will set, if the monitored battery voltage rises above 16.0 volts.


- When Monitored:

Continuously with the ignition on.

- Set Condition:

When the monitored battery voltage rises above 16.0 volts.







Always perform the NAG1 Pre-Diagnostic Troubleshooting procedure before proceeding. NAG1 - Pre-Diagnostic Troubleshooting Procedure



Diagnostic Test


1. CHECK FOR CHARGING SYSTEM DTCs

With the scan tool, read Engine DTCs.


NOTE: This includes any one trip faults.

Are there any Engine Charging System DTCs present?

Yes


- Perform NAG1 TRANSMISSION VERIFICATION TEST. NAG1 Transmission Verification Test

No

- Go To 2



2. VEHICLE WAS JUMP STARTED INCORRECTLY

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. NAG1 Transmission Verification Test

No

- Go To 3



3. ELECTRONIC SHIFT MODULE

Reconnect all disconnected harness connectors.

With the scan tool, erase ESM DTCs.

Start the engine and raise the engine speed to 2000 RPM.

With the scan tool, read ESM DTCs.

Did the P0563-BATTERY VOLTAGE HIGH DTC reset?

Yes

- Using the schematics as a guide, check the Electronic Shift Module (ESM) terminals for corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. If no problems are found, replace the ESM (Steering Column).
- Perform NAG1 TRANSMISSION VERIFICATION TEST. NAG1 Transmission Verification Test

No

- Test Complete.