B1378

DTC B1378 - DSAB Resistance Too High (R > 5.4 Ohms)




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.
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 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.

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




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

1.6 Ohms < R < 2.8 Ohms

NG: Repair or replace harness between SRSCM and

OK: Go 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 Scan Tool.
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 Scan Tool, check DTC.

NOTE: 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.