Restraint Troubleshooting

B1361

B1362

B1367

B1368

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 : 1.6 ~ 4.7 Ohms

Schematic Diagram






Terminal & Connector Inspection
Refer to the DESCRIPTION in this TROUBLESHOOTING part.

Inspection Procedure

1. PREPARATION
Refer to the DESCRIPTION in this TROUBLESHOOTING part.

2. CHECK BPT RESISTANCE

CAUTION
Never attempt to measure the circuit resistance of the airbag module(squib) even if you are using the specified tester.

(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 3(2) and 4(1) of SRSCM harness connector(B).

Specification (resistance) : 1.6 ~ 4.7 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 3(2) of SRSCM harness connector(B).
(2) Measure resistance between the terminal 2 of BPT harness connector and the terminal 4(1) of SRSCM harness connector(B).

Specification (resistance) : below 1 Ohm






(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 part.