B1018

B1018 OCCUPANT SENS

Description

DTC B1018 [UNIT FAIL] OCCUPANT SENS
Suppresses the deployment of front passenger air bag when the condition of passenger seat is empty or child and child-seat. And turns on front passenger air bag OFF indicator (Cut-off telltale) lamp when the condition of passenger seat is child-seat and child. In case of malfunction the blinking of the air bag warning lamp reports the malfunction to driver and by the on board self-diagnosis system or electro-diagnosis tester CONSULT-III can detect the cause.

OPERATION
The unit classifies occupant in passenger seat and transmits it to Occupant Classification System (OCS) control unit.

STRUCTURE
Plural sensors are installed in the sensor mat to prevent incorrect sensing induced by the sitting position.

INSTALLATION
Seat sensor mat is installed in the passenger seat cushion.

DTC Logic

DTC DETECTION LOGIC






DTC CONFIRMATION PROCEDURE (WITH CONSULT-III)

Step 1:

DTC CONFIRMATION PROCEDURE (WITHOUT CONSULT-III)

Step 1:

Diagnosis Procedure

WITH CONSULT-III

WARNING:
- Before servicing, turn ignition switch OFF, disconnect battery negative terminal and wait at least 3 minutes. (To discharge backup capacitor.)
- Do not use unspecified tester or other measuring device.

DIAGNOSTIC PROCEDURE

Step 1-3: