Monitor GDS Data
- Plug GDS to Data Link Connector (DLC).
- Turn "ON" the ignition switch.
- Select "Diagnostic Trouble Codes (DTC)," and click "DTC Status" to check DTC information.
- Read the "DTC State" parameter.
- Is the DTC State "Present"?
PRESENT
- TCM's ROM or DATA is changed by reprogram illegally.
- Substitute with a known-good E-Shifer and check for proper operation. If the problem is corrected, replace E-Shifer and then go to "Verification of Vehicle Repair" procedure.
HISTORY
- TCM unit memory was not cleared after repair. Clear the DTC and go to "Verification of Vehicle Repair".