Without Scan Tool

The DTC's can be cleared in two methods, Scan Tool method or On-Board diagnostic method...

Clearing (DTC)s On-Board Diagnostic Method
1. Press OFF and WARMER (digital IPC) or OFF and PASSENGER WARMER (analog IPC).
2. Press LO (fan speed) button until Air Conditioning Programmer (ACM)? appears.
3. Press HI (fan speed) ACM CODES? appears.
4. Press LO (fan speed), ACM CLEAR CODES? appears.
5. Press HI (fan speed) to clear codes. ACM CODES CLEAR appears.