Retrieving Trouble Codes: Notes
NOTE:
Before retrieving trouble codes, ensure battery is fully charged for proper self-diagnostic system operation. Perform TCM On-Board Diagnostic (OBD) system check before retrieving trouble codes to ensure proper operation of OD/OFF indicator. See TCM ON-BOARD DIAGNOSTIC (OBD) SYSTEM CHECK . Trouble codes must be cleared from PCM and TCM memory once repairs have been performed. See CLEARING TROUBLE CODES .
NOTE:
If a trouble code cannot be retrieved, and a transmission fault is present, perform manual shifting test to determine if fault is caused by an electrical or mechanical related problem. See MANUAL SHIFTING TEST under TRANSMISSION SHIFT TESTING.