B14XX

Description


DTC B14XX AIR BAG DIAGNOSIS SENSOR UNIT

The air bag diagnosis sensor unit will run self diagnostics when the ignition switch is turned ON. It has the potential to set many diagnostic trouble codes which will conform to the B14XX format, but will not match any other SRS diagnostic trouble codes. Refer to "CONSULT Function (AIR BAG)" Supplemental Restraints.

PART LOCATION

Refer to "Component Parts 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- Refer to "Diagnosis Procedure" .
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. Refer to "Flash Code Index" Manufacturer Code Charts.
- Inspection End.


Diagnosis Procedure

NOTE:
Follow the procedures in numerical order when repairing malfunctioning parts. Confirm whether malfunction is eliminated using air bag warning lamp each time repair is finished. If malfunction is still observed, proceed to the next step. When malfunction is eliminated, further repair work is not required.

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. AIR BAG DIAGNOSIS SENSOR UNIT

Replace the air bag diagnosis sensor unit. Refer to "Removal and Installation" Service and Repair.
- GO TO 4

4. RELATED HARNESS

Replace the related harness.
- Inspection End.