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Q:Is either DTC B1B72 or B1B75 set? YES: Replace the SRS-ECU (Refer to P.52B-326). NO: The procedure is complete. DTC B1B73: Malfunction of G-sensor Inside Side Impact Sensor (Rear) (LH) M15204000962USA0000010000 If DTC B1B73 or B1B76 is set in the SRS-ECU, DTC SET CONDITIONS ⦆ Analog G-sensor is not operating. ⦆ Analog G-sensor characteristics are abnormal. ⦆ Analog G-sensor output is abnormal. TROUBLESHOOTING HINTS DIAGNOSIS Required Special Tools: ⦆ 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 STEP 1. Using scan tool MB991958, diagnose the CAN bus ZC501967 AC404789 ZC5019680000 MB991824 MB991827 MB991910 Data link connector To prevent damage to scan tool MB991958, always turn the (1) Connect scan tool MB991958. Refer to "How to connect the (2) Turn the ignition switch to the "ON" position. (3) Diagnose the CAN bus line. (4) Turn the ignition switch to the "LOCK" (OFF) position. Q:Is the CAN bus line found to be normal? YES: Go to Step 2. NO: Repair the CAN bus line (Refer to GROUP 54D, SUPPLEMENTAL RESTRAINT SYSTEM (SRS) 52B-151 SRS AIR BAG DIAGNOSIS |