Standard Testing

DTC B1401 Side Impact Sensor [LH] Short to Ground

Circuit Description

DTC Detection Condition:

Wiring Diagram:

The circuit consists of the SRSCM, clock spring, DAB, PAB, SAB, BPT, FIS and SIS. It causes the SRS to deploy when the SRS deployment conditions are satisfied. The above DTCs are recorded when a short to ground is detected in SIS circuit.

NOTE:
- DAB: Driver Airbag
- PAB: Passenger Airbag
- SAB: Side Airbag
- BPT: Belt Pretensioner
- SIS: Side Impact Sensor
- BS: Belt Buckle Switch
- SRSCM: Supplemental Restraints System Control Module

INSPECTION PROCEDURE

1. Preparation
1. Disconnect negative (-) terminal cable from the battery, and wait at least 30 seconds.
2. Disconnect the connector of SIS.
3. Disconnect the connector of the SRSCM.




2. Check SIS circuit.

CHECK: On the SIS connector (harness side), measure the resistance between SIS high and body ground.

Resistance: Infinity

NG: Repair or replace the harness or the connector between the SRSCM and the SIS.

OK: Go to step "3".

3. Check the SIS.

PREPARATION
1. Turn ignition switch to LOCK.
2. Disconnect negative (-) terminal cable from the battery, and wait at least 30 seconds.
3. Connect the SRSCM connector and the SIS connector.




4. Connect the negative (-) terminal cable from the battery, and wait at least 30 seconds.

CHECK:
1. Turn the ignition switch to ON, and wait at least 30 seconds.
2. Clear the malfunction code stored in memory with the Hi-Scan Pro.
3. Turn the ignition switch to LOCK, and wait at least 30 seconds.
4. Turn the ignition switch to ON, and wait at least 30 seconds.
5. Using the Hi-Scan Pro, check for DTCs.
There is no DTC.

HINT: Codes other than these may be output at this time, but they are not relevant to this procedure.

NG: Replace the SIS.

OK: Check the SRSCM.