Posted in Mitsubishi Colt

B1473 – Seat belt pre-tensioner (LH) (squib) system (short-circuited to power supply) MMC Colt

 Posted by  Posted on September 28, 2020

OPERATION

DIAGNOSIS CODE SET CONDITIONS

PROBABLE CAUSES

  • Damaged wiring harnesses or connectors
  • Short to the power supply in the seat belt pre-tensioner (LH) (squib) harness
  • Malfunction of the SRS-ECU

    • DIAGNOSIS PROCEDURE

    STEP 1. M.U.T.-III CAN bus diagnostics.

    Q. Is the CAN bus line found to be normal?

    STEP 2. Check whether the diagnosis code is reset.

    Q. Is diagnosis code B1473 set?

    STEP 3. Check the seat belt pre-tensioner (LH) (M.U.T.-III diagnosis code).

    Q. Is diagnosis code B1473 set?

    STEP 4. Voltage measurement at the SRS-ECU connector B-109.

    Q. Is the check result normal?

    STEP 5. Check whether the diagnosis code is reset.

    Q. Is diagnosis code B1473 set?

    Author: admin