B1384

DTC B1380 SIDE AIRBAG FRONT-DRIVER RESISTANCE CIRCUIT SHORT TO GROUND

DTC B1384 SIDE AIRBAG FRONT-PASSENGER RESISTANCE CIRCUIT SHORT TO GROUND

GENERAL DESCRIPTION
Side Airbag (hereinafter referred to SAB) located in driver and passenger seat protects passenger's head and shoulder. SAB is consist of air bag and inflator. Air bag reduces impact of collision by filled up gas. Inflator keeps gas and uses it to deploy air bag on collision.

CAUTION: Never measure resistance of SAB directly, Current of measuring device may cause unexpected air bag deploy.

DTC DESCRIPTION
The SRSCM sets DTC B1380/B1384 if there is a short to ground in DSAB/PSAB harness.
*In this case, SRSCM checks if there's any fault in circuit by sending current for a while.

DTC Detecting Condition:

Specification:

Schematic Diagram:

MONITOR SCANTOOL DATA
1. Ignition "OFF", connect scantool.
2. Ignition "ON" & Engine "OFF", select "Diagnostic Trouble Codes (DTC)" mode.
3. Monitor diagnostic trouble code and present of trouble code.




4. Using a scantool, clear the DTC.
5. Is DTC present problem?

YES - Go to "W/Harness Inspection" procedure.

NO
- Displaying nothing (no DTC) or DTC with label "H" (historical) shows that fault is intermittent caused by poor contact in the part's and/or SRSCM connector or was repaired and SRSCM memory was not cleared.
Thoroughly check shorting bar/shorting bar release pin and connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.

- Repair or replace as necessary and then go to "Verification of Vehicle Repair" procedure.

TERMINAL AND CONNECTOR INSPECTION
1. Many malfunctions in the electrical system are caused by poor harness and terminals.
Faults can also be caused by interference from other electrical systems, and mechanical or chemical damage.

2. Thoroughly check shorting bar/shorting bar release pin and connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.
3. Has a problem been found?

YES - Repair as necessary and then go to "Verification of Vehicle Repair" procedure.

NO - Go to "Squib Circuit Inspection" procedure.

SQUIB CIRCUIT INSPECTION
1. Ignition "OFF".
2. Disconnect (-) terminal cable from battery and wait for 1 minutes or more.
3. Disconnect SAB module and connect the dummy (0957A-38200) and dummy adapter (0957A-38200) to main harness connector.

NOTE: If dummy and dummy adapter are not able to be prepared, use a known-good SAB or 2 ohms resistor.

4. Connect (-) terminal cable to battery and Ignition "ON" & Engine "OFF" and wait for 30 seconds or more.




5. Connect scantool to Data Link Connector (DLC) and clear DTC with scantool and diagnose again.
6. Is DTC present problem?

YES - Go to "Main harness circuit inspection" procedure.

NO
- Substitute a known-good SAB assembly, and check for proper operation.
- If the problem is corrected, replace SAB and then go to "Verification of Vehicle Repair" procedure.

MAIN HARNESS CIRCUIT INSPECTION
1. Ignition "OFF".
2. Disconnect the battery (-) terminal cable from the battery and wait at least one minute.
3. Disconnect SAB connector and SRSCM main harness connector.




4. Measure resistance between terminal "1" or "2" of the SAB harness connector and chassis ground.

Specification : infinite

5. Is the measured resistance within specifications?

YES
- Substitute a known-good SRSCM, and check for proper operation.
- If the problem is corrected, replace SRSCM and then go to "Verification of Vehicle Repair" procedure.

NO
- Substitute the SRS main harness and check for proper operation.
- If the problem is corrected, replace SRS main harness and then go to "Verification of Vehicle Repair" procedure.

VERIFICATION OF VEHICLE REPAIR
After a repair, it is essential to verify that the fault has been corrected.
1. Connect scantool and select "Diagnostic Trouble Codes (DTC)" mode.
2. Using a scantool, clear the DTC.
3. Operate the vehicle within DTC Enable conditions in General information.
4. Are any DTC present?

YES - Go to the applicable troubleshooting procedure.

NO System is performing to specification at this time.