B1347

DTC B1347 DAB RESISTANCE TOO LOW (R ≤ 0.9 OHM)

CIRCUIT DESCRIPTION

DTC Detecting Condition:

The DAB squib circuit consists of the SRSCM, clock spring and DAB. It causes the airbag to deploy when the airbag deployment conditions are satisfied. The above DTCs are recorded when the DAB resistance is too high or low in the DAB squib circuit.

Wiring Diagram:

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 the connectors of the PAB, left and right side airbag,belt pretensioner and satellite sensor.
4. Disconnect the connector of the SRSCM.

CAUTION: Place the DAB with the front surface facing up- ward.




2. Check the DAB resistance.

[PREPARATION]
Release the shorting bar on the SRSCM side of the airbag squib side. Connect the dummy (0957A-38200) and dummy adapter (0957A-1C000) to the clock spring connector.

CAUTION: Never attempt to measure the circuit resistance of the airbag module(squib) even if you are using the specified tester.

NOTE: Before checking the resistance, you have to insert a shorting bar into the SRSCM connector.

[CHECK]
Measure the resistance between the DAB high (+) and low (-) terminals.

1.6 ohms ≤ R ≤ 4.1 ohms

[NG]-> Go to step "4"

[OK]->




3. Check the DAB squib.

[PREPARATION]
1. Turn the ignition switch to LOCK.
2. Disconnect the negative (-) terminal cable from the battery, and wait for 30 seconds.
3. Connect the DAB connector.
4. 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 of 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 for DTCs.
There is no DTC.

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

[NG]-> Replace the DAB.

[OK]->
From the results of the above inspection, the malfunctioning part can now be considered normal.




4. Check the Clock spring.

[PREPARATION]
Disconnect the connector between the SRSCM clock spring, and connect the dummy connector to the clock spring connector.

NOTE:
Before checking the resistance, you must insert the shorting bar into the SRSCM connector.

[CHECK]
Measure the resistance between the DAB high (+) and low (-) circuits.

1.6 ohms ≤ R ≤ 4.1 ohms

[NG]-> Replace the clock spring.

[OK]->
Repair or replace the harness or the connector between the SRSCM and the clock spring.