Restraint Troubleshooting

B1364

B1370

DTC Description

The Seat Belt Pretensioner consists of the SRSCM and two Seat Belt Pretensioners (BPT). The SRSCM sets above DTC (s) if it detects short to battery line on the BPT circuit.

DTC Detecting Condition






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 SHORT TO BATTERY LINE
(1) Connect the battery negative cable to the battery.
(2) Turn the ignition switch to ON.
(3) Measure voltage between the terminal 1 of BPT harness connector and chassis ground.

Specification (voltage) : Approximately 0 V






(4) Is the measured voltage within specification?
Yes
- Check the BPT Module.
No
- Repair the short to battery line circuit on wiring harness between the BPT and the SRSCM.

3. CHECK THE BPT MODULE
(1) Replace the Belt Pretensioner (BPT) with a new one.
- Refer to "Belt Pretensioner (BPT)" section in this SERVICE MANUAL.
(2) Install the DAB module and connect the DAB connector.
(3) Connect the connectors of the PAB, SAB, CAB, BPT, FIS and SIS.
(4) Connect the SRSCM connector.
(5) Connect the battery negative cable to the battery.
(6) Connect a Hi-Scan(Pro) to the data link connector.
(7) Turn the ignition switch to ON and check the vehicle again.
Does Hi-Scan (Pro) indicate any DTC related to Belt Pretensioner (BPT)?
Yes
- Go to next step.
No
- Replace BPT module.

4. CLEAR THE DTC AND CHECK THE VEHICLE AGAIN
Refer to the DESCRIPTION in this TROUBLESHOOTING part.