0001

0001-BATTERY VOLTAGE HIGH

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

Theory of Operation

The Shift Lever Assembly (ESM) monitors ignition voltage. The DTC will set, if the monitored battery voltage is 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 NAG1 Pre-Diagnostic Troubleshooting procedure before proceeding. .

1. CHECK FOR CHARGING SYSTEM DTCS
1. Turn the ignition on.
2. With the scan tool, read Engine DTCs.

NOTE: This includes any one trip faults.

Are there any Engine Charging System DTCs present?

Yes

- Perform the appropriate diagnostic procedure.Testing and Inspection

No

- Go To 2

2. 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 five seconds?

Yes

- Perform the appropriate diagnostic procedure.Testing and Inspection

No

- Go To 3

3. SHIFT LEVER ASSEMBLY (ESM)
1. Reconnect all disconnected harness connectors.
2. With the scan tool, erase DTC's in the ESM.
3. Start the engine and raise the engine speed to 2000 RPM.
4. With the scan tool, read DTC's in the ESM.

Did the 0002-BATTERY VOLTAGE HIGH DTC reset?

Yes

- Replace the Shift Lever Assembly (ESM)
- Perform the NAG1 TRANSMISSION VERIFICATION TEST. NAG1 Transmission Verification Test.

No

- Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension.