Diagnostic Test
- 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
- Refer to the DTC INDEX and perform the appropriate symptom.
- Perform NAG1 TRANSMISSION VERIFICATION TEST. Refer to NAG1 TRANSMISSION VERIFICATION TEST .
No
- Go To 2
- With the scan tool, read Engine DTCs.
- 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. Refer to NAG1 TRANSMISSION VERIFICATION TEST .
No
- Go To 3
- 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.
- CHECK SYSTEM VOLTAGE
- Start the engine and let idle for at least 10 seconds.
- With the scan tool, monitor system voltage.
Is the system voltage above 16V for more than 5 seconds?
Yes
- Refer to DTC INDEX and perform the appropriate symptom.
- Perform NAG1 TRANSMISSION VERIFICATION TEST. Refer to NAG1 TRANSMISSION VERIFICATION TEST .
No
- Go To 4
- 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 P0563-BATTERY VOLTAGE HIGH DTC reset?
Yes
- Replace the Shift Lever Assembly per the Service Information
- Perform NAG1 TRANSMISSION VERIFICATION TEST. Refer to NAG1 TRANSMISSION VERIFICATION TEST .
No
- Test Complete.