B1524

DTC B1522 DRIVER SEAT BUCKLE SWITCH OPEN OR SHORT TO GROUND
DTC B1524 PASSENGER SEAT BUCKLE SWITCH OPEN OR SHORT TO GROUND

DESCRIPTION
This system decides whether the seat belt of the driver or passenger are locked and then prevent the belt pretensioner from deploying on crash.

Detecting Condition:

INSPECTION PROCEDURES
1. Preparation
1. Disconnect the negative (-) terminal cable from the battery, and wait 3 minutes.
2. Remove the DAB module.
3. Disconnect the connectors of the PAB, SAB, BPT and satellite sensors.
4. Disconnect the SRSCM connector.

YES - Check the seat belt buckle switch circuit.

2. Check the seat belt buckle switch circuit.
Measure the voltage and resistance of sensor high seat belt switch high and body ground between the SRSCM connector and the seat belt switch connector.

Resistance : Infinity






YES - Check the seat belt switch.

NO - Replace the harness between the SRSCM and the seat belt switch.

3. Check the seat belt switch.
Check the resistance in accordance with the changed weight.

SWITCH ON : R = 1 Kohm ± 10% (Belted)
SWITCH OPEN : R = 400 Ohm ± 10% (Unbelted)






YES - Check the seat belt buckle switch squib.

NO - Replace the seat belt switch

4. Check the seat belt buckle switch squib.

[PREPARATION]
1. Connect the connector to the SRSCM.
2. Connect the seat belt buckle switch connector.
3. Connect the negative (-) terminal cable to the battery, and wait for 30 seconds.

[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 30 seconds.
4. Turn the ignition switch to ON, and wait for 30 seconds.
5. Using Hi-Scan Pro, check the DTC. There is no DTC.

[HINT]
Codes other than these may be output at this time, but they are not relevant to this check.






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

NO - Replace the SRSCM.