B1378

Detecting Condition:

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

The above DTCs are recorded when SAB resistance too high or low is detected in the SAB squib circuit.




WIRING DIAGRAM

INSPECTION PROCEDURE
1. Preparation (See step "1" of DTC B1111/B1112 - Battery voltage too high/low "Inspection Procedure").
2. Check SAB resistance.

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

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




CHECK: Measure the resistance between SAB high (+) and SAB low (-).

1.9 Ohms < R < 2.5 Ohms

NG: Repair or replace harness between SRSCM and SAB.

OK: Continue to next step.

3. Check SAB squib.

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




CHECK:
1. Turn ignition switch to ON, and wait at least 30 seconds.
2. Clear malfunction code stored in memory with Hi-scan.
3. Turn ignition switch to LOCK, and wait at least 30 seconds.
4. Turn ignition switch to ON, and wait at least 30 seconds.
5. Using Hi-scan, check DTC.

DTC is not output.

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

NG: Replace SAB.

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