Toyota 4Runner: Center Airbag Sensor Assembly Malfunction (B1000/31)

Toyota 4Runner Service Manual / Vehicle Interior / Supplemental Restraint Systems / Airbag System / Center Airbag Sensor Assembly Malfunction (B1000/31)

DESCRIPTION

The center airbag sensor assembly consists of a deceleration sensor, safing sensor, drive circuit, diagnosis circuit, ignition control, etc.

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

DTC B1000/31 is recorded when a malfunction is detected in the center airbag sensor assembly.

DTC Code	DTC Detection Condition	Trouble Area
B1000/31	Center airbag sensor assembly malfunction.	Center airbag sensor assembly

PROCEDURE

CHECK DTC

(a) Check for DTCs (See page ).

Result

Result	Proceed to
DTC B1000/31 is output	A
DTC B1000/31 and other DTCs are output	B

NOTICE:

If only DTC B1000/31 is output, do not clear the DTCs, replace the center airbag sensor assembly.

HINT:

If any DTCs other than DTC B1000/31 are also output, troubleshoot those DTCs first.

REPLACE CENTER AIRBAG SENSOR ASSEMBLY

GO TO DIAGNOSTIC TROUBLE CODE CHART

Front Airbag Sensor LH Malfunction (B1615/14)

DESCRIPTION The front airbag sensor LH consists of the diagnostic circuit and frontal deceleration sensor, etc. If the center airbag sensor receives signals from the frontal deceleration sensor, ...

Front Airbag Sensor RH Malfunction (B1610/13)

DESCRIPTION The front airbag sensor RH consists of the diagnostic circuit and frontal deceleration sensor, etc. If the center airbag sensor receives signals from the frontal deceleration sensor, ...

Other materials about Toyota 4Runner:

Lost Communication with ECM/PCM "A" (U0100/71,U0122/71,U0124/71,U0126/71)
DESCRIPTION DTC Code DTC Detection Condition Trouble Area U0100/71 While driving at 30 km/h (19 mph), the ECM indicates a CAN communication stop for 3 seconds or more. CAN communicati ...

Disassembly
DISASSEMBLY PROCEDURE 1. REMOVE FRONT AXLE WITH ABS ROTOR BEARING ASSEMBLY LH (a) Gently fix the front axle hub in a vise between aluminum plates. (b) Using SST, remove the bearing. SST: 09710-300 ...