B142A

Description


DTC B142A IGNITION VOLTAGE

Ignition voltage is supplied to the air bag diagnosis sensor unit when the ignition is in the ON position. The air bag diagnosis sensor unit will monitor for low or high ignition voltage.

PART LOCATION

Refer to "Component Parts Location" Locations.


DTC Logic


DTC DETECTION LOGIC

With 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.


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.
-END