B1346

DTC B1346 DRIVER AIRBAG RESISTANCE TOO HIGH (1ST STAGE)

DTC B1347 DRIVER AIRBAG RESISTANCE TOO LOW (1ST STAGE)

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

Detecting Condition:

SPECIFICATIONS
DAB: 1.7 ohms ≤ R ≤ 2.3 ohms
Clock spring: 0.24 ohms ≤ R ≤ 0.61 ohms

INSPECTION OF CONNECTOR AND TERMINAL
1. Check all the connectors related to the DTC for contact condition visually.
2. Check the connector and the terminal.
1. Check the connector for connection securely.
2. Check the terminal for contact condition, deterioration, erosion and elasticity.

CAUTION: Do not deform the connector for revising contact.

3. Are confirmed trouble on the connector and the terminal?

YES - After repairing the trouble part, check whether DTC occurs or not.

NO - Check the DAB resistance.

CHECK DAB RESISTANCE
1. Preparation
1. Disconnect the negative (-) terminal cable from the battery, and wait 30 seconds.
2. Remove the DAB module.
3. Disconnect the connector of the PAB, SAB, CAB, SIS, FIS and BPT.




4. Disconnect the SRSCM connector.

2. Check DAB resistance.

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 the shorting bar insert plastic that is attached to the diagnosis checker into the SRSCM connector.

1. Release the airbag activation prevention mechanism on SRSCM side of airbag squib side.
Connect the dummy (0957A-38200) and dummy adapter (0957A-1C000) to the clock spring side connector.
Use the 2.0 ohms connector on Dummy load.




2. Measure the resistance between the DAB high (+) and low (-).

Resistance: 1.7 ohms ≤ R ≤ 2.3 ohms

YES - Check the DAB squib.

NO - Check the clock spring.

CHECK DAB SQUIB
1. Preparation
1. Turn the ignition switch"LOCK".
2. Connect the DAB connector.
3. Connect the SRSCM connector.
4. Connect the negative (-) terminal cable from the battery, and wait for 30 seconds.

2. 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 at 30 seconds.
4. Turn the ignition switch to "ON", and wait for at 30 seconds.




5. Using Hi-Scan Pro, check the DTC.

NOTE: Codes other than these may be output at this time, but they are not relevant to this procedure.

6. There is no DTC.

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

NO - Replace the DAB.

CHECK CLOCK SPRING
1. Disconnect the connector between the SRSCM clock spring, and connect the dummy connector (0957A-38200) and dummy adapter (0957A-1C000) to the clock spring side connector.




2. Measure the resistance between the DAB high (+) and low (-).

Resistance: 0.24 ohms ≤ R ≤ 0.61 ohms

YES - Replace the harness between the SRSCM and the clock spring. Then check the DAB squib.

NO - Replace the clock spring.