Clearing Diagnostic Trouble Codes (DTCS)

The DTCs in EBCM/EBTCM memory are erased in one of two ways:
1. Scan Tool.
2. Ignition cycle default.

These two methods are detailed below. Be sure to verify proper system operation and absence of DTCs when the clearing procedure is completed.

The EBCM/EBTCM will not permit DTC clearing until all DTCs have been displayed. Also, DTCs cannot be cleared by unplugging the EBCM/EBTCM, disconnecting the battery cables, or turning the ignition OFF (except on an ignition cycle default).
^ Scan Tool Method:
- Select DTC(s) for Diagnostic Trouble Codes. After DTCs have been viewed completely, the scan tool will ask, "CLEAR DTCs?" answer "YES." The scan tool will then read, "HISTORY DATA WILL BE LOST, CLEAR DTCs? " Answer " YES " and DTCs will be cleared.
^ Ignition Cycle Default:
- If no diagnostic trouble codes occur for 100 drive cycles (a drive cycle occurs when the ignition is turned to "RUN"), any existing DTCs are automatically cleared from the EBCM/EBTCM memory.