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SRS AIR BAG DIAGNOSIS TSB Revision SUPPLEMENTAL RESTRAINT SYSTEM (SRS) 52B-337 . CIRCUIT OPERATION • The SRS-ECU is energized by the ignition switch (IG1) through multi-purpose fuse 22 and the • If the power supply to the SRS-ECU has failed, scan tool (MUT-III Sub Assembly) will not be able . TROUBLESHOOTING HINTS (The most likely • Damaged wiring harness or connector • Defective battery • Charging system failed • Malfunction of the SRS-ECU . DIAGNOSIS Required Special Tools: • MB991958: Scan Tool (MUT-III Sub Assembly) • MB991824: Vehicle Communication Interface (V.C.I.) • MB991827: MUT-III USB Cable • MB991910: MUT-III Main Harness A (Vehicles with CAN communication system) . AC305233 AO CONNECTOR: C-22 C-22 (Y) AC305362 CONNECTOR: C-121 C-121 (Y) AD SRS-ECU AC305415 CONNECTORS : C-211, C-215 C-211 C-215 AZ |