NAG1 Shifter - ESM (Column Shift)

P0607-ECU INTERNAL PERFORMANCE - ESM (COLUMN SHIFT)





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


Theory of Operation


The Electronic Shift Module (ESM) performs various internal tests to verify proper controller operation. This DTC indicates that there is an issue with the Shifter's internal processor.


- When Monitored:

Continuously with the ignition on.

- Set Condition:

If the Electronic Shift Module (ESM) detects an error with the optical sensors or internal checksum value is not correct.







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



Diagnostic Test


1. ELECTRONIC SHIFT MODULE

View repair

Repair

- 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