B1088

B1088 PRE-TEN FRONT LH





Description
For front LH seat belt pretensioner, crash is judged by main "G" sensor output signal and safing algorithm in front direction.

OPERATION
In the case of a frontal collision that exceeds specified impact level, the air bag diagnosis sensor unit detects the deceleration caused by collision. It restrains the passenger with seat belt easing the stress on passengers chest with load limiter.

STRUCTURE
The restraint system for front seat occupant consists of the pretensioner mechanism and load limiter mechanism.

INSTALLATION
Front LH seat belt pretensioner is installed on the underside of center pillar with fixed nuts.




DTC Logic






DTC CONFIRMATION PROCEDURE
1.CHECK SELF-DIAG RESULT
With CONSULT-III
1. Turn ignition switch ON.
2. Perform "AIR BAG" Self Diagnostic Result.
Without CONSULT-III
1. Turn ignition switch ON.
2. Check the air bag warning lamp status. Air Bag Warning Lamp Diagnosis.

NOTE:
SRS does not enter diagnosis mode if no malfunction is detected in user mode.
Is malfunctioning part detected?
YES - SEE Diagnosis Procedure.
NO - INSPECTION END




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 unspecified tester or other measuring device.
1.CHECK HARNESS CONNECTOR
Check the harness connector.
Is the inspection result normal?
YES - GO TO 2.
NO - Replace harness connector.
2.CHECK WIRING HARNESS
Check the wiring harness externals.
Is the inspection result normal?
YES - GO TO 3.
NO - Replace wiring harness.
3.REPLACE FRONT SEAT BELT PRE-TENSIONER
1. Replace front LH seat belt pretensioner. Exploded View.
2. Perform DTC confirmation procedure. SEE DTC Logic.
Is DTC detected?
YES - GO TO 4.
NO - INSPECTION END
4.REPLACE AIR BAG DIAGNOSIS SENSOR UNIT
1. Replace air bag diagnosis sensor unit. Diagnosis Sensor Unit.
2. Perform DTC confirmation procedure. SEE DTC Logic.
Is DTC detected?
YES - GO TO 1.
NO - INSPECTION END