B1345
B1345 DAB OPENCIRCUIT DESCRIPTION
Circuit Description:
Wiring Diagram:
The DAB squib circuit consists of the SRSCM, the clock spring, the DAB. It causes the airbag to deploy when the airbag deployment conditions are satisfied. The above DTCs are recorded when the DAB circuit is open or the DAB resistance too high or low is detected in the DAB squib circuit.
INSPECTION PROCEDURE
1. Preparation
1. Disconnect the 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 airbags, belt pretensioners and SIS.
4. Disconnect the SRSCM connector.
CAUTION: Place the DAB with the front surface facing upward.
2. Check the DAB resistance.
[PREPARATION]
Release the airbag activation prevention mechanism on SRSCM side of airbag squib side. Connect the dummy (0957A-38200) and dummy adapter (0957A- 38400) to the clock spring side 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 the shorting bar insert plastic that is attached to the diagnosis checker into the SRSCM connector.
[CHECK]
Measure the resistance between the DAB high (+) and low (-).
1.80 ohms <= R <= 2.2 ohm
[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 with 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 the DTC. 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 PAB.
[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 (0957A-38200) and dummy adapter (0957A-38400) to the clock spring side connector.
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:
[CHECK]
Measure the resistance between the DAB high (+) and low (-).
1.80 Ohm <= R <= 2.2 Ohms
[NG]-> Replace the clock spring.
[OK]-> Repair or replace the harness or the connector between the SRSCM and the clock spring.