B1401

DTC B1401 SIDE IMPACT SENSOR FRONT-DRIVER CIRCUIT SHORT TO GROUND
DTC B1404 SIDE IMPACT SENSOR FRONT-PASSENGER CIRCUIT SHORT TO GROUND

DESCRIPTION
The release consists of the SRSCM and SIS.
The above DTC is recorded when a short to ground is detected in the SIS circuit.

Detecting Condition:

INSPECTION OF CONNECTOR AND TERMINAL
1. Check all the connectors related to the DTC for contact condition visually.
2. Check the connector and the terminal.
1. Check the connector for connection securely.
2. Check the terminal for contact condition, deterioration, erosion and elasticity.

CAUTION: Do not deform the connector for revising contact.

3. Are confirmed trouble on the connector and the terminal?

YES - After repairing the trouble part, check whether DTC occurs or not.

NO - Check the SIS circuit.

CHECK SIS CIRCUIT
1. Preparation
1. Disconnect the negative (-) terminal cable from the battery, and wait 30 seconds.
2. Remove the DAB module.
3. Disconnect the connector of the PAB, SAB, CAB, SIS, FIS and BPT.
4. Disconnect the SRSCM connector.






2. Check SIS circuit
For the connector (on the SRSCM side) between the SRSCM and SIS, measure the resistance between the SIS high (+) and body ground.

Resistance : Infinity






YES - Check the SIS.

NO - Replace the harness between the SRSCM and SIS.

CHECK SIS
1. Preparation
1. Turn the ignition switch "LOCK".
2. Connect the SIS connector.
3. Connect the SRSCM connector.
4. Connect the negative (-) terminal cable from the battery, and wait for 30 seconds.

2. Check
1. Turn the ignition switch to "ON", and wait for at least 30 seconds.
2. Clear the malfunction code stored in the memory with the HI-Scan Pro.
3. Turn the ignition switch to "LOCK", and wait for at 30 seconds.
4. Turn the ignition switch to "ON", and wait for at 30 seconds.
5. Using Hi-Scan Pro, check the DTC.

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






6. There is no DTC.

YES - From the result of the above inspection, the malfunctioning part can now be considered normal.

NO - Replace the SIS.