B1484

DTC B1349 (1ST STAGE) DRIVER AIRBAG SHORT TO BATTERY

DTC B1484 (2ND STAGE) DRIVER AIRBAG SHORT TO BATTERY

DTC DESCRIPTION
The Driver Airbag circuit consists of the SRSCM, Clockspring and the Driver Airbag (DAB) which has two squib circuits.
The SRSCM sets above DTC(s) if it detects short to battery line on the DAB circuit.

DTC Detecting Condition:

Schematic Diagram:

TERMINAL & CONNECTOR INSPECTION
1. Visually inspect all connectors related to the affected circuit for damage and secure connection.
2. Inspect terminals for damage and corrosion.

CAUTION: Avoid damaging connectors during the inspection process.

3. Are any problems found?

NO - Go to next step.

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

INSPECTION PROCEDURE

1. PREPARATION
1. Turn the ignition switch to LOCK.
2. Disconnect the negative (-) terminal from the battery and wait for at least 3 minutes.
3. Remove the DAB module and disconnect the DAB connector.
4. Disconnect the connectors of the PAB, SAB, CAB, BPT, BUPT, FIS and SIS.
5. Disconnect the SRSCM connector.

2. CHECK SHORT TO BATTERY LINE
1. Connect the negative (-) terminal to the battery.
2. Turn the ignition switch to ON.
3. Measure voltage between the terminal 1 of DAB stage #1 harness connector and chassis ground(-). (DAB stage #1)
4. Measure voltage between the terminal 1 of DAB stage #2 harness connector and chassis ground(-). (DAB stage #2)
5. Measure voltage between the terminal 30 of clockspring harness connector and chassis ground(-). (DAB stage #1)




6. Measure voltage between the terminal 38 of clockspring harness connector and chassis ground(-). (DAB stage #2)

Specification (voltage) : Approximately 0 V

Is the measured voltage within specification?

YES - Check the DAB module.

NO - Repair or replace the wiring harness between the DAB and the clockspring or between the clockspring and the SRSCM.

3. CHECK THE DAB MODULE
1. Replace the Driver Airbag (DAB) with a new one.
2. Install the DAB module and connect the DAB connector.
3. Connect the connectors of the PAB, SAB, CAB, BPT, BUPT, FIS and SIS.
4. Connect the SRSCM connector.
5. Connect the negative (-) terminal 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 DAB?

YES - Check the clockspring.

NO - Replace the Driver Airbag (DAB).

4. CHECK THE CLOCKSPRING
1. Check the clockspring.

Is the clockspring normal?

YES - Go to next step.

NO - Replace the clockspring.

5. CLEAR THE DTC AND CHECK THE VEHICLE AGAIN
1. Install the DAB module and connect the DAB connector.
2. Connect the connectors of the PAB, SAB, CAB, BPT, BUPT, FIS and SIS.
3. Connect the SRSCM connector.
4. Connect the negative (-) terminal to the battery.
5. Connect a Hi-Scan (Pro) to the data link connector.
6. Turn the ignition switch to ON.
7. Clear the DTC stored in the SRSCM memory with the Hi-Scan (Pro).
8. Turn the ignition switch to LOCK and wait for at least 30 seconds.
9. Turn the ignition switch to ON and wait for at least 30 seconds.
10. Check the vehicle again with the Hi-Scan (Pro).

Does the above DTC(s) go off?

YES - Problem is intermittent or was repaired and SRSCM memory was not cleared.

NO - Replace the SRSCM with a new one, and then check the vehicle again. At this time, if the vehicle normally operates with a new SRSCM, the fault may be the SRSCM (Replace SRSCM).