B1017
B1017, B1020, B1021 OCCUPANT SENS C/UDescription
DTC B1017, B1020, B1021 [UNIT FAIL] OCCUPANT SENS C/U
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 report the malfunction to driver and by the on board self-diagnosis system or electro-diagnosis tester CONSULT-III can detect the cause.
OPERATION
This unit classifies occupant in passenger seat and detects electrical malfunctions in Occupant Classification System (OCS), and transmits malfunction information to air bag control unit.
STRUCTURE
It is integrated into the seat sensor mat and detects the occupants with Occupant Classification System (OCS) control unit that classifies the occupants.
INSTALLATION
Occupant Classification System (OCS) control unit 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 1-4:
