B1362

DTC Description

The Seat Belt Pretensioner circuit consists of the SRSCM and two Seat Belt Pretensioners (BPT). The SRSCM sets above DTC(s) if it detects that the resistance of BPT squib is too high or low.

DTC Detecting Condition





Specification

BPT resistance : 1.5 - 4.5 Ohms


Schematic Diagram





Terminal & Connector Inspection

Refer to the DESCRIPTION in this TROUBLESHOOTING section.

Inspection Procedure

1. PREPARATION
Refer to the DESCRIPTION in this TROUBLESHOOTING section.
2. CHECK BPT RESISTANCE

CAUTION:
Never attempt to measure the circuit resistance of the airbag module(squib) with an ohmmeter.

(1) Connect the Dummy and the Dummy Adapter on BPT harness connector.
Refer to "SPECIAL SERVICE TOOL" section in this SERVICE MANUAL for the SST No. of Dummy and Dummy Adapter.
(2) Measure resistance between the terminal 31(33) and 32(34) of SRSCM harness connector(B).

Specification (resistance) : 1.5 - 4.5 Ohms





(3) Is the measured resistance within specification?
YES
> Replace the Seat Belt Pretensioner(BPT) module.
NO
>Check open circuit.
3. CHECK OPEN CIRCUIT
(1) Measure resistance between the terminal 1 of BPT harness connector and the terminal 31(33) of SRSCM harness connector(B).
(2) Measure resistance between the terminal 2 of BPT harness connector and the terminal 32(34) of SRSCM harness connector(B).

Specification (resistance) : below 1 Ohms





(3) Is the measured resistance within specification?
YES
> Check short circuit.
NO
> Repair or replace the wiring harness between the BPT and the SRSCM.
4. CHECK SHORT CIRCUIT
(1) Measure resistance between the terminal 1 and 2 of BPT harness connector.

Specification (resistance) : infinite





(2) Is the measured resistance within specification?
YES
> Go to next step.
NO
> Repair or replace the wiring harness between the BPT and the SRSCM.
5. CLEAR THE DTC AND CHECK THE VEHICLE AGAIN
Refer to the DESCRIPTION in this TROUBLESHOOTING section.