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B1018 INFINITI

B1018 INFINITI - Occupant Sensor

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
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Possible causes

  • Faulty Occupant Sensor
  • Occupant Sensor harness is open or shorted
  • Occupant Sensor circuit poor electrical connection

Possible symptoms

  • Air Bag Warning Light ON

B1018 Infiniti Description

The Occupant Sensor suppresses the deployment of passenger air bag when the condition of the passenger seat is empty or child and child-seat. And turns on the cut-off telltale lamp when the condition of the passenger seat is child-seat and child. In the case of malfunction, the blinking of the SRS air bag warning lamp reports the malfunction to the driver and by the on board self-diagnosis system.

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

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

OBDII Code B1018 Infiniti - Occupant Sensor - AutoCodes.com

Precautions for SRS “AIR BAG” and “SEAT BELT PRE-TENSIONER” Service

  • Never probe the electrical connectors on air bag, side air curtain modules or seat belts.
  • Never disassemble or tamper with safety belt buckle/retractor pretensioners, adaptive load limiting retractors, safety belt inflators, or probe the electrical connectors.
  • Do not use electrical test equipment to check SRS circuits unless instructed to in this Service Manual.
  • Before servicing the SRS, turn ignition switch OFF, disconnect both battery cables and wait at least 3 minutes. For approximately 3 minutes after the cables are removed, it is still possible for the air bag and seat belt pre-tensioner to deploy. Therefore, do not work on any SRS connectors or wires until at least 3 minutes have passed.
Failure to follow this instruction may result in the accidental deployment of these modules, which increases the risk of serious personal injury or death.

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