Shift Lever Code

P0563-BATTERY VOLTAGE HIGH - SLA

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

Possible Causes
- CHARGING SYSTEM DTC's
- VEHICLE WAS JUMP STARTED INCORRECTLY
- SHIFT LEVER ASSEMBLY

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

Diagnostic Test
1. CHECK FOR CHARGING SYSTEM DTC's
With the scan tool, read Engine DTC's.

NOTE: This includes any one trip faults.

Are there any Engine Charging System DTC's present?
YES >>Refer to Computers and Control Systems/Testing and Inspection. Testing and Inspection
NO >>Go To 3

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 - VER 1.
NO >> Go To 3

3. SHIFT LEVER ASSEMBLY
Reconnect all disconnected harness connectors.
With the scan tool, erase Shift Lever DTC's.
Start the engine and raise the engine speed to 2000 RPM.
With the scan tool, read Shift Lever DTC's.
Did the P0562-BATTERY VOLTAGE HIGH DTC reset?
YES >>Replace the Shift Lever Assembly.
Perform NAG1 TRANSMISSION VERIFICATION TEST - VER 1.
NO >> Test Complete.