Restraint Troubleshooting

B1400

B1403

B1409

B1410

DTC Description

The detecting system for side crash consists of the SRSCM and two Side Impact Sensors (SIS). The SRSCM sets above DTC(s) if it detects that any SIS is defective or there is communication error between any SIS and the SRSCM.

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 SIS CIRCUIT
(1) Measure resistance between the terminal 1 of SIS harness connector and the terminal 27(25) of SRSCM harness connector(B).
(2) Measure resistance between the terminal 2 of SIS harness connector and the terminal 28(26) of SRSCM harness connector(B).

Specification (resistance) : below 1 Ohm






(3) Is the measured resistance within specification?
Yes
- Check Side Impact Sensor.
No
- Repair or replace the wiring harness between the SIS and the SRSCM.

3. CHECK THE SIDE IMPACT SENSOR
(1) Replace the Side Impact Sensor(SIS) with a new one.
- Refer to "Side Impact Sensor(SIS)" 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 Side Impact Sensor(SIS)?
Yes
- Go to next step.
No
- Replace SIS.

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