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Home >> Toyota >> 2008 >> FJ Cruiser RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 221 (Supplemental Restraint System) >> Airbag System >> DTC B1643/81 Driver Side Satellite Sensor Bus Initialization Incomplete >> Description

DTC B1643/81 Driver Side Satellite Sensor Bus Initialization Incomplete: Description

WARNING: This page is about a different car, the 2008 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.

The side airbag sensor LH consists of part including the diagnostic circuit and the lateral deceleration sensor.

When the center airbag sensor receives signals from the lateral deceleration sensor, it determines whether or not the SRS should be activated.

DTC B1643/81 is set when a malfunction is detected in the side airbag sensor LH circuit.

DTC TROUBLE DETECTION CONDITION

DTC No. DTC Detection Condition Trouble Area
B1643/81 When one of following conditions is met:
  • Center airbag sensor detects open circuit signal in side airbag sensor LH circuit for 2 seconds.
  • Side airbag sensor LH malfunction
  • Center airbag sensor malfunction
  • Floor wire
  • Side airbag sensor LH
  • Center airbag sensor