SRS-Ecu Memory Check
Required Special Tool:
- MB991958: Scan Tool (M.U.T.-III Sub Assembly)
- MB991824: Vehicle Communication Interface (V.C.I.)
- MB991827: M.U.T.-III USB Cable
- MB991910: M.U.T.-III Main Harness A (Vehicles with CAN Communication System)
CAUTION:
To prevent damage to scan tool MB991958, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991958.
- Connect scan tool MB991958 to the data link connector (16-pin).
- Read (and write down) all displayed diagnostic trouble codes (Refer to SRS-ECU OCCUPANT CLASSIFICATION-ECU
).NOTE: If the battery power supply has been disconnected or disrupted by the collision, scan tool MB991958 cannot communicate with the SRS-ECU. Check the battery, then check and, if necessary, repair the front wiring harness and the instrument panel wiring harness before proceeding.
- Check the "Freeze Frame Date" (FFD).
- However, when Airbags was deployed or it is judged defective SRS-ECU, do not erase diagnostic trouble codes.
- Wait for at least one second, and then turn the ignition switch to the ON position again.
- After waiting 15 seconds or more, note all displayed diagnostic trouble codes (Refer to SRS-ECU OCCUPANT CLASSIFICATION-ECU ).