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Home >> Toyota >> 2021 >> C-HR LE >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Supplemental Restraint System - Diagnostic Codes (B1627-B1656) >> Airbag System >> DTC B1651/33: Manual Cut off Switch Trouble [10/2017 - 09/2019] >> Description

DTC B1651/33: Manual Cut off Switch Trouble [10/2017 - 09/2019]: Description

The airbag cut off switch circuit consists of the airbag sensor assembly and airbag cut off switch cylinder sub-assembly.

The instrument panel passenger without door airbag assembly can be optionally deactivated via this circuit by turning the airbag cut off switch cylinder sub-assembly to the OFF position.

If the instrument panel passenger without door airbag assembly is deactivated, the passenger airbag ON/OFF indicator ("OFF") comes on to inform the driver.

DTC B1651/33 is stored when a malfunction is detected in the airbag cut off switch circuit.

DTC No. Detection Item DTC Detection Condition Trouble Area Test Mode / Check Mode
B1651/33 Manual Cut off Switch Trouble Any of the following conditions is met:
  • The airbag sensor assembly detects a line short, in the airbag cut off switch circuit.
  • The airbag sensor assembly detects a short to ground in the airbag cut off switch circuit.
  • The airbag sensor assembly detects a short to B+ in the airbag cut off switch circuit.
  • The airbag sensor assembly detects an open in the airbag cut off switch circuit.
  • Airbag cut off switch cylinder sub-assembly malfunction
  • Airbag sensor assembly malfunction
  • Instrument panel wire
  • Airbag cut off switch cylinder sub-assembly
  • Airbag sensor assembly
Does not apply to test/check mode
DTC DETECTION CONDITIONS:

  Vehicle Condition
Pattern 1 Pattern 2 Pattern 3 Pattern 4 Pattern 5 Pattern 6
Diagnosis Condition Ignition switch ON ◦ ◦ ◦ ◦ ◦ ◦
Malfunction Status The airbag sensor assembly detects a line short, in the airbag cut off switch circuit ◦ - - - - -
The airbag sensor assembly detects a short to ground in the airbag cut off switch circuit - ◦ - - - -
The airbag sensor assembly detects a short to B+ in the airbag cut off switch circuit - - ◦ - - -
The airbag sensor assembly detects an open in the airbag cut off switch circuit - - - ◦ - -
Airbag cut off switch cylinder sub-assembly malfunction - - - - ◦ -
Airbag sensor assembly malfunction - - - - - ◦
Detection Time - - - - - -
Number of Trips 1 trip 1 trip 1 trip 1 trip 1 trip 1 trip

HINT: 

DTC will be output when conditions for either of the patterns in the table above are met.