B1933 - Air Bag Passenger Circuit Open Fault

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

  • Faulty Passenger Air Bag Module
  • Passenger Air Bag Module harness is open or shorted
  • Passenger Air Bag Module circuit poor electrical connection
  • Faulty Restraint Control Module (RCM)

Possible symptoms

  • Air Bag Warning Light ON

B1933 Description

The Restraints Control Module (RCM) checks all of the Passenger Air Bag Module Circuits for faults. If the RCM detects an open or low resistance on the Passenger Air Bag Module Squib 1 Circuits, it will store Diagnostic Trouble Code (DTC) B1933 in memory and illuminate the air bag indicator.
OBDII Code B1933 - Air Bag Passenger Circuit Open Fault - AutoCodes.com

B1933 Information for specific makes

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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