DESCRIPTION

The center airbag sensor consists of the airbag sensor, safing sensor, drive circuit, diagnosis circuit and ignition control, etc.

It receives signals from the airbag sensor, judges whether or not the SRS must be activated, and detects diagnosis system malfunction.

DTC B1100/31 is recorded when occurrence of a malfunction in the center airbag sensor is detected.

INSPECTION PROCEDURE

HINT:

When a malfunction code other than code B1100/31 is displayed at the same time, first repair the malfunction indicated by the malfunction code other than code B1100/31.

PROCEDURE

(a) Turn the ignition switch to LOCK.

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

(c) Disconnect the connectors from the center airbag sensor.

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

(e) Turn the ignition switch to ON.

(f) Measure the voltage between the body ground and IG2 of the C32 dash wire connector on the center airbag sensor side.

Standard voltage:

10 to 14 V

NG

CHECK THAT ABNORMALITY OCCURS ON BATTERY AND CHARGING SYSTEM

OK

(a) Clear the DTC .

(b) Turn the ignition switch to LOCK, and wait at least for 10 seconds.

(c) Turn the ignition switch to ON, and wait at least for 10 seconds.

(d) Repeat the first 2 step at least 5 times.

(e) Check the DTC .

OK:

DTC B1100/31 is output.

HINT:

Codes other than code B1100/31 may be output at this time, but they are not relevant to this check.

NG

USING SIMULATION METHOD, REPRODUCE MALFUNCTION SYMPTOMS

OK

REPLACE CENTER AIRBAG SENSOR ASSEMBLY