4.
Using a scantool, clear the DTC.
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 fillied up gas. Inflator keeps gas and uses it to deploy air bag on collision.
Never measure resistance of SAB directly, Current of measuring device may cause unexpected air bag deploy.
The SRSCM sets DTC B1378/B1382 if the measured resistance value of DSAB/PSAB circuit is more than the threshold value.
The SRSCM sets DTC B1379/B1383 if the measured resistance value of DSAB/PSAB circuit is less than the threshold value.
*In this case, SRSCM checks if there's any fault in circuit by sending current for a while.
Item | Detecting Condition | Possible cause | ||
DTC Strategy | ● Check Resistance | ● Poor connection of connected part. ● Poor connection between shorting bar and release pin. ● Faulty SAB. ● Faulty SRSCM. | ||
Enable Conditions | ● Ignition "ON" | |||
Threshold Value | B1378 B1382 | ● SAB Resistance ≥ 6.1Ω | ||
B1379 B1383 | ● SAB Resistance ≤ 1.1Ω | |||
Diagnostic Time | Qualification | ● More than 1 sec | ||
De-Qualification | ● More than 2 sec | |||
Test Condition | Resistance |
Ignition ON | 1.6Ω ＜ SAB resistance ＜ 4.7Ω |
Ignition "OFF", connect scantool.
Ignition "ON"＆ Engine "OFF", select "Diagnostic Trouble Codes(DTC)" mode.
Monitor diagnostic trouble code and present of trouble code.
Using a scantool, clear the DTC.
Is DTC present problem ?
▶ Go to "W/Harness Inspection" procedure.
▶ 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.
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.
Thoroughly check shorting bar/shorting bar release pin and connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.
Has a problem been found?
▶ Repair as necessary and then go to "Verification of Vehicle Repair" procedure.
▶ Go to "Squib Circuit Inspection" procedure.
Ignition "OFF".
Disconnect (-) terminal cable from battery and wait for 1 minutes or more.
Discooncet SAB module and connect the dummy (0957A-38200) and dummy adapter (0957A-3F000) to main harness connector.
If dummy and dummy adaptor are not able to be prepared, use a known-good SAB or 2Ω resistor.
Connect (-) terminal cable to battery and Ignition "ON" ＆ Engine "OFF" and wait for 30 seconds or more.
Connect scantool to Data Link Connector(DLC) and clear DTC with scantool and diagnose again.
Is DTC present problem ?
▶ Go to "Main harness circuit inspection" procedure.
▶ 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.
Ignition "OFF".
Disconnect the battery (-) terminal cable from the battery and wait at least one minutes.
Disconnect SAB connector and SRSCM main harness connector.
Measure resistance between terminal "1" or "2" of the SAB harness connector.
Specification : approx. 1 Ω below
Is the measured resistance within specifications?
▶ 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.
▶ 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.
Refer to the DESCRIPTION in this TROUBLESHOOTING section.
