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SRS AIR BAG DIAGNOSIS TSB Revision SUPPLEMENTAL RESTRAINT SYSTEM (SRS) 52B-187 DTC B1C29: Side-air bag Module (LH) (Squib) System (Squib Circuit Open) CAUTION If DTC B1C29 is set in the SRS-ECU, always diag- . CIRCUIT OPERATION • The SRS-ECU judges how severe a collision is by detecting signals from the side impact sensor • The ignition signal is input to the side-air bag module to inflate the side-air bag. . DTC SET CONDITIONS This DTC is set if there is abnormal resistance . TROUBLESHOOTING HINTS • Open circuit in the side-air bag module (squib) (LH) circuit • Improper connector contact • Malfunction of the SRS-ECU SIDE-AIR BAG MODULE CONNECTOR CONNECTOR SRS-ECU Side-airbag Module (Squib) (LH) Circuit NOTE : CONNECTOR COUPLED : ON CONNECTOR UNCOUPLED : OFF AC708951AD Connector: C-36 C-36 (Y) AC708954 AD Connector: D-34 D-34 (Y) |