Toyota 4Runner: Front Airbag Sensor LH Malfunction (B1615/14)

Toyota 4Runner Service Manual / Vehicle Interior / Supplemental Restraint Systems / Airbag System / 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, it determines whether the SRS should be activated.

DTC B1615/14 is stored when a malfunction is detected in the front airbag sensor LH circuit.

DTC Code	DTC Detection Condition	Trouble Area
B1615/14	Either condition is met: A front airbag sensor LH malfunction. A center airbag sensor malfunction.	Front airbag sensor LH Center airbag sensor assembly

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

When disconnecting the cable from the negative (-) battery terminal while performing repairs, some systems need to be initialized after the cable is reconnected (See page ).

PROCEDURE

1.	CHECK FRONT AIRBAG SENSOR LH

(a) Turn the ignition switch off.

(b) Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.

(d) Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.

(e) Turn the ignition switch to ON, and wait for at least 60 seconds.

(f) Clear the DTCs stored in memory (See page
).

(g) Turn the ignition switch off.

(h) Turn the ignition switch to ON, and wait for at least 60 seconds.

(i) Check for DTCs (See page ).

Result

Result	Proceed to
DTC B1615 is output	A
DTC B1610 is output	B
DTC B1610 and B1615 are not output	C

HINT:

Codes other than DTC B1610 and B1615 may be output at this time, but they are not related to this check.

Text in Illustration

*1	Front Airbag Sensor RH
*2	Center Airbag Sensor

USE SIMULATION METHOD TO CHECK

REPLACE CENTER AIRBAG SENSOR ASSEMBLY

REPLACE FRONT AIRBAG SENSOR LH

Lost Communication with Front Airbag Sensor RH (B1612/83,B1613/83)

DESCRIPTION The front airbag sensor RH circuit consists of the center airbag sensor and front airbag sensor RH. The front airbag sensor RH detects impacts to the vehicle and sends signals to the ...

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 receiv ...

Other materials about Toyota 4Runner:

Health Check
HEALTH CHECK 1. HEALTH CHECK Health Check provides an overall view of the vehicle status including telematics. Health Check will provide the DCM (Telematics Transceiver) software version, PRL version, and applicable DTCs and fault codes related to telema ...

Ambient Temperature Sensor Circuit (B1412)
DESCRIPTION The cooler thermistor (ambient temperature sensor) is installed in the front part of the cooler condenser assembly. This sensor is connected to the air conditioning amplifier assembly and detects fluctuations in the ambient temperature. The se ...

0.0067