P0602

P0602-CONTROL MODULE PROGRAMMING ERROR/NOT PROGRAMMED

For the Transmission circuit diagram Refer to Transmission Control Systems/Diagrams.
For a complete wiring diagram refer to diagrams.
- When Monitored:
Check for generic software is made at power-up
- Set Condition:
If genie software is found, the MIL will light immediately. This DTC is designed to signal the technician that the controller still has generic software installed.

Possible Causes

- PCM - PROGRAMMING ERROR

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding.

Theory of Operation
The controller is programmed during manufacturing with generic software to facilitate testing. This software does not have the proper calibrations to control a transmission in a vehicle. The check for generic software is made at power-up. If generic software is found, the MIL will light immediately and the MIL will stay on even if the fault is cleared, until the proper software is installed. Note: Transmission will be placed in limp-in mode.

Diagnostic Test

1. CONTROL MODULE PROGRAMMING ERROR

NOTE: Controller is programmed with generic software and will not allow the correct vehicle Powertrain management.

With the scan tool.
Record the vehicles controller part number.
Select Use Controller Part Number under the Flash Tab.
Flash the controller with the correct software.
Verify the controller flashed successfully.
Test Complete
Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1. Verification Tests
Perform the Quick Learn Procedure.