B1137 SIDE MODULE LH

B1137

Description
DTC Logic
Diagnosis Procedure

Description

For front LH side air bag module, crash is judged by main “G” sensor output signal (left side: LH satellite sensor, right side: RH satellite sensor) and safing algorithm (in air bag diagnosis sensor unit).

OPERATION

In case of frontal collision whose acceleration exceeds the specified level, the ignition materials are ignited by electric ignition system. The system burns the gas generating materials resulting in a chemical reaction. This generates hot gases that flow into the air bag through a filter and expand the bag.

STRUCTURE

Front LH side air bag module mainly consists of air bag and inflator that inflates air bag.

INSTALLATION

Front LH side air bag module is installed on the side of front seatback with fixed nuts.

DTC Logic

DTC No.	Trouble diagnosis name	DTC detecting condition	Possible cause
B1137	SIDE MODULE LH [SHORT]	Front LH side air bag module circuit are shorted to each other	Disconnection of wiring harness and short Malfunction in front LH side air bag module Malfunction in air bag diagnosis sensor unit

DTC CONFIRMATION PROCEDURE

1.CHECK SELF-DIAG RESULT

Diagnosis Procedure

■ WARNING ■

Before servicing, turn ignition switch OFF, disconnect battery negative terminal and wait at least 3 minutes. (To discharge backup capacitor.)

Never use un specified tester or other measuring device.

1.CHECK HARNESS CONNECTOR

2.CHECK WIRING HARNESS

3.REPLACE FRONT SIDE AIR BAG MODULE

4.REPLACE AIR BAG DIAGNOSIS SENSOR UNIT