B1513

DTC B1511 SEAT BELT BUCKLE SWITCH [DRIVER] OPEN OR SHORT TO BATTERY LINE

DTC B1513 SEAT BELT BUCKLE SWITCH [PASSENGER] OPEN OR SHORT TO BATTERY LINE

DTC DESCRIPTION
The Seat Belt Buckle Switch (BS) circuit consists of the SRSCM and two BS. The SRSCM sets above DTC(s) if it detects open or short to battery line on the BS circuit. This system decides whether the driver or passenger seat belt is locked or not.

DTC Detecting Condition:

Schematic Diagram:

Specification:

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 OPEN CIRCUIT
1. Disconnect the BS connector.




2. Measure resistance between the terminal 3 of BS harness connector and the terminal 32 (31) of SRSCM harness connector (B).

Specification (Resistance) : below 1 ohm

3. Is the measured resistance within specification?

YES - Go to next step.

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

3. 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 3 of BS harness connector and chassis ground(-).

Specification (voltage) : Approximately 0 V

4. Is the measured voltage within specification?

YES - Check the Seat belt buckle switch (BS).

NO - Repair the short to battery line circuit on wiring harness between the BS and the SRSCM.

4. CHECK THE SEAT BELT BUCKLE SWITCH (BS)
1. Measure current between the terminal 3 of BS and 32 (31) of SRSCM harness connector (B).

Specification (current) : 12 - 18 mA (Buckled status), 4 - 7 mA (Unbuckled status)

2. Is the wiring harness normal?

YES - Go to next stop.

NO - Replace the BS.

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).