B1054

Description


DTC B1049 - B1052, B1054 - B1057 DRIVER AIRBAG MODULE

The driver air bag module is dual stage and wired to the air bag diagnosis sensor unit through the spiral cable.
The air bag diagnosis sensor unit will monitor for opens and shorts in detected lines to the driver air bag module including the spiral cable.

PART LOCATION

Locations.


DTC Logic


DTC DETECTION LOGIC

With CONSULT





Without CONSULT






DTC CONFIRMATION PROCEDURE (With CONSULT)


1. INSPECTION START

Turn ignition switch ON.
- GO TO 2.

2. CHECK SELF-DIAG RESULT

Check for the DTC on CONSULT.
Is the DTC detected?
YES- .
NO- Inspection End.

DTC CONFIRMATION PROCEDURE (Without CONSULT)

NOTE:
SRS will not enter diagnosis mode if no malfunction is detected in User mode.

1. IGNITION SWITCH

Turn ignition switch ON.
- GO TO 2

2. IGNITION SWITCH

After air bag warning lamp lights for 7 seconds, turn ignition switch OFF within 1 second.
- GO TO 3

3. WAIT TIME

Wait more than 3 seconds.
- GO TO 4

4. REPEAT STEPS

Repeat steps 1 to 3 twice.
- GO TO 5

5. IGNITION SWITCH

Turn ignition switch ON.
- GO TO 6

6. DIAGNOSTIC MODE

SRS system is now in Diagnostic mode and AIR BAG warning lamp flashes. Trouble Diagnosis Without CONSULT.
-END


Diagnosis Procedure (Component Diagnosis)

Recheck SRS after each replacement.

1. HARNESS CONNECTOR

Is there any visible damage to the connector?
YES or NO
YES- Replace the harness.
NO- GO TO 2

2. WIRING HARNESS

Is there any visible damage to the harness?
YES or NO
YES- Replace the harness.
NO- GO TO 3

3. CHECK SPIRAL CABLE CIRCUIT

1.Turn ignition switch OFF.
2.Disconnect driver air bag module connector and combination switch (spiral cable) connector.
3.Check continuity between driver air bag module harness connector and combination switch (spiral cable)
harness connector.





4. Check continuity between driver air bag module harness connector and ground.





Is the inspection result normal?
YES- GO TO 4
NO- Replace combination switch (spiral cable). Service and Repair.

4. AIR BAG DIAGNOSIS SENSOR UNIT

Replace the air bag diagnosis sensor unit. Service and Repair.
- GO TO 5

5. DRIVER AIR BAG MODULE

Replace the driver air bag module. Removal And Installation.
- GO TO 6

6. RELATED HARNESS

Replace the related harness.
-END