Nissan Altima 2007-2012 Service Manual: B1049 – B1052, B1054 – B1057 driver airbag module

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

Refer to SRC-7, "SRS Component Parts Location".

DTC Logic

DTC DETECTION LOGIC

With CONSULT-lll

Without CONSULT-lll

DTC CONFIRMATION PROCEDURE (With CONSULT-lll)

1.INSPECTION START

Turn ignition switch ON.

>> GO TO 2.

2.CHECK SELF-DIAG RESULT

Check for the DTC on CONSULT-lll.

Is the DTC detected? YES >> Refer to SRC-17, "Diagnosis Procedure (Component Diagnosis)".

NO >> Inspection End.

DTC CONFIRMATION PROCEDURE (Without CONSULT-lll)

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. Refer to SRC-70, "Trouble Diagnosis without CONSULT-III".

>> 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.DRIVER AIR BAG MODULE

Replace the driver air bag module. Refer to SR-5, "Removal and Installation".

>> GO TO 4

4.SPIRAL CABLE

Replace the spiral cable. Refer to SR-8, "Removal and Installation".

>> GO TO 5

5.AIR BAG DIAGNOSIS SENSOR UNIT

Replace the air bag diagnosis sensor unit. Refer to SR-17, "Removal and Installation".

>> GO TO 6

6.RELATED HARNESS

Replace the related harness.

>> END

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