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Home >> Toyota >> 2014 >> RAV4 EV >> Repair and Diagnosis (Single Page) >> Restraints >> Air Bag, SRS >> Supplemental Restraint System (Diagnostic Codes & Symptom Tests) (Electric) >> Airbag System >> DTC B1623/81: Driver Side - Side Airbag Sensor Assembly Initialization Incomplete; DTC B1628/82: Front Passenger Side - Side Airbag Sensor Assembly Initialization Incomplete; DTC B1643/81: Driver Side Satellite Sensor Bus Initialization Incomplete; DTC B1648/82: Front Passenger Side Satellite Sensor Bus Initialization Incomplete [09/2013 - ] >> Description
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DTC B1623/81: Driver Side - Side Airbag Sensor Assembly Initialization Incomplete; DTC B1628/82: Front Passenger Side - Side Airbag Sensor Assembly Initialization Incomplete; DTC B1643/81: Driver Side Satellite Sensor Bus Initialization Incomplete; DTC B1648/82: Front Passenger Side Satellite Sensor Bus Initialization Incomplete [09/2013 - ]: Description

The circuit for the side collision sensor LH or RH (to determine deployment of the front seat airbag LH or RH, front seat belt pretensioner LH or RH and curtain shield airbag LH or RH) is composed of the center airbag sensor assembly, side airbag sensor assembly LH or RH and rear airbag sensor LH or RH.

The rear airbag sensor LH or RH detect impacts to the vehicle and send signals to the center airbag sensor assembly to determine if the airbag should be deployed.

DTC B1633/81 or B1638/82 is stored when a malfunction is detected in the circuit for the side collision sensor assembly LH or RH (to determine deployment of the front seat airbag LH or RH, front seat belt pretensioner LH or RH and curtain shield airbag LH or RH).

DTC Code DTC Detection Condition Trouble Area
B1623/81
B1643/81
One of the following conditions is met:
  • The center airbag sensor assembly detects a line short circuit signal, open circuit signal, short circuit to ground signal or short circuit to B+ signal in the circuit for the front side collision sensor assembly LH (to determine deployment of the front seat airbag LH, front seat belt pretensioner LH and curtain shield airbag LH) for 2 seconds.
  • A side airbag sensor assembly LH malfunction.
  • A rear airbag sensor LH malfunction.
  • A center airbag sensor assembly malfunction.
  • Floor wire
  • Side airbag sensor assembly LH
  • Rear airbag sensor LH
  • Center airbag sensor assembly
B1628/82
B1648/82
One of the following conditions is met:
  • The center airbag sensor assembly detects a line short circuit signal, open circuit signal, short circuit to ground signal or short circuit to B+ signal in the circuit for the front side collision sensor assembly RH (to determine deployment of the front seat airbag RH, front seat belt pretensioner RH and curtain shield airbag RH) for 2 seconds.
  • A side airbag sensor assembly RH malfunction.
  • A rear airbag sensor RH malfunction.
  • A center airbag sensor assembly malfunction.
  • No. 2 floor wire
  • Side airbag sensor assembly RH
  • Rear airbag sensor RH
  • Center airbag sensor assembly