B1361

CIRCUIT DESCRIPTION
The BPT squib circuit consists of the SRSCM and the BPT. If it causes the airbag to deploy when the airbag deployment conditions are satisfied.

The DTC is recorded when the BPT resistance too high or low is detected in the BPT squib circuit.




WIRING DIAGRAM

INSPECTION PROCEDURE




1. Preparation.
1. Disconnect negative (-) terminal cable from the battery, and wait at least 30 seconds.
2. Remove the DAB module.
3. Disconnect connectors of PAB left and right side airbag, belt pretensioner and satellite sensor.
4. Disconnect connector of SRSCM.

CAUTION: Store the DAB with the front surface facing upward.




2. Check the BPT resistance.

[PREPARATION]
Release airbag activation prevention mechanism on the SRSCM side of airbag squib side.

Connect the dummy connector (0957A-38200) to the BPT connector of the the SRSCM connector side.

NOTE: Before check the resistance, you have to insert the shorting bar insert plastic attached diagnosis checker into the SRSCM connector.

[CHECK]
Measure the resistance between the BPT high (+) and the BPT low (-).
1.6 ohms < R < 2.8 ohms

NG: Repair or replace the harness between the SRSCM and the BPT.
OK: Go to next step.




3. Check the BPT squib.

[PREPARATION]
1. Turn the ignition switch 10 LOCK.
2. Disconnect negative (-) terminal cable from the battery, and wait at least 30 seconds.
3. Connect the BPT connector.
4. Connect negative (-) terminal cable to the battery, and wait at least 30 seconds.

[CHECK]
1. Turn the ignition switch to ON, and wait at least 30 seconds.
2. Clear malfunction code stored in memory with Scan tool.
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 Hi-Scan Pro, check the DTC.
There is no DTC.

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

NG: Replace the BPT.

OK: From the results of the above inspection, the malfunctioning part can now be considered normal.