Nissan GT-R (R35) · Service Manual RESTRAINTS

B1018 OCCUPANT SENS

B1018

Description


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 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 control unit.
 
 STRUCTURE

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

Occupant Classification System sensor is installed in the passenger seat cushion.

DTC Logic

 
 DTC DETECTION LOGIC

DTC No.
 		Trouble diagnosis name
 		DTC detecting condition
 		Possible cause
B1018
 		OCCUPANT SENS
[UNIT FAIL]
 		Trouble occurs in Occupant Classification System sensor
  • Disconnection of wiring harness
  • Malfunction in Occupant Classification System sensor

 
 DTC CONFIRMATION PROCEDURE

 
 1.CHECK SELF-DIAG RESULT

Diagnosis Procedure


■ 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

 
 1.CHECK HARNESS CONNECTOR
 
 2.CHECK WIRING HARNESS
 
 3.REPLACE OCCUPANT CLASSIFICATION SYSTEM SENSOR
 
 4.REPLACE OCCUPANT CLASSIFICATION SYSTEM CONTROL UNIT
 
 5.REPLACE AIR BAG DIAGNOSIS SENSOR UNIT