SRS-ECU Memory Check

To inspect and service the SRS after a collision (whether or not the air bags have deployed), perform the following steps.

SRS-ECU MEMORY CHECK

Required Special Tool:
- MB991502: Scan tool (MUT-II)

CAUTION: To prevent damage to scan tool MB991502, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991502.




1. Connect scan tool MB991502 to the data link connector (16-pin).
2. Read (and write down) all displayed diagnostic trouble codes.

NOTE: If the battery power supply has been disconnected or disrupted by the collision, scan tool MB991502 cannot communicate with the SRS-ECU. Check the battery then check and, if necessary, repair the front wiring harness and the body wiring harness before proceeding.

Data List:

3. Read the data list (fault duration and how many times memories are erased) using scan tool MB991502.
4. Erase the diagnostic trouble codes and, after waiting 5 seconds or more, read (and write down) all displayed diagnostic trouble codes.