Diesel Data: Automotive Repair

Without Scan Tool









CLEARING TROUBLE CODES
Supplemental Restraint Systems ([1][2]SRS) Diagnostic Trouble Codes (DTC)s are stored in EEPROM and can not be cleared by disconnecting the negative (-) battery cable. If a TECH 1 is not available, SRS DTCs can be cleared by the following procedure:

1. Connect two test leads to terminals "TC" and "AB" of the DLC.

NOTE: Make sure that the test leads have sufficient length to reach into the passenger compartment. If the leads are too short, you will not be able to watch the air bag indicator and, consequently, not know if the DTCs were cleared.

2. Route the test leads into the passenger compartment.
3. Turn the ignition switch to "ACC" or "ON" and wait at least six seconds.
4. Ground the test lead connected to terminal "TC" for one second.
5. Remove the "TC" test lead from ground and IMMEDIATELY ground the test lead connected to terminal "AB" for one second.
6. Repeat this procedure two more times.
7. Continuously ground the "TC" test lead until the air bag indicator flashes rapidly (50 millisecond cycles). If the air bag indicator remains illuminated, then repeat Steps 4, 5 and 6.
8. Turn the ignition switch to "LOCK."
9. Disconnect the test leads from the DLC.