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TROUBLESHOOTING SUPPLEMENTAL RESTRAINT SYSTEM (SRS) 52B-120 Code No.B1452: Curtain air bag module (squib) (LH) system (short-circuited to the earth) CAUTION If diagnosis code B1452 is set in the SRS-ECU, OPERATION The SRS-ECU judges how severe a collision is by DIAGNOSIS CODE SET CONDITIONS This diagnosis code is set if the curtain air bag PROBABLE CAUSES • Damaged wiring harnesses or connectors • Short to the earth in the curtain air bag module (squib) (LH) harness • Malfunction of the SRS-ECU DIAGNOSTIC PROCEDURE STEP 1. MUT-III CAN bus diagnostics Use the MUT-III to diagnose the CAN bus lines. Q: Is the check result normal? YES : Go to Step 2. NO : Repair the CAN bus line (Refer to GROUP Wire colour code SRS-ECU CONNECTOR CONNECTOR : CONNECTOR NOTE CURTAIN AIR BAG Curtain Air Bag Module (Squib) (LH) Circuit |