PRE-COLLISION: PRE-COLLISION SYSTEM: DESCRIPTION (2008 LX570)

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Last Modified: 11-27-2007		1.6 C
Service Category: Vehicle Interior	Section: Supplemental Restraint Systems
Model Year: 2008	Model: LX570	Doc ID: RM000000X7Q00WX
Title: PRE-COLLISION: PRE-COLLISION SYSTEM: DESCRIPTION (2008 LX570)

DTC

B2002

Open in Seat Belt Motor RH Circuit

DTC

B2007

Open in Seat Belt Motor LH Circuit

DESCRIPTION

The seat belt control ECU receives information from the master cylinder solenoid (skid control ECU) via the CAN communication line and tightens the seat belt by operating the motor in the front seat outer belt assembly RH or LH.

DTC Code	DTC Detection Condition	Trouble Area
B2002	Open in the seat belt motor RH circuit continues for 1 second or more.	Front seat outer assembly RH Harness or connector Seat belt control ECU
B2007	Open in the seat belt motor LH circuit continues for 1 second or more.	Front seat outer assembly LH Harness or connector Seat belt control ECU

WIRING DIAGRAM

INSPECTION PROCEDURE

CAUTION:

The pretensioner is built into the front seat outer belt assembly. Be sure to follow the correct inspection procedure, as failure to follow the correct procedure (such as inspection of incorrect connectors) may deploy the pretensioner.

PROCEDURE

1.	INSPECT SEAT BELT CONTROL ECU

(a) Disconnect the E41 seat belt control ECU connector.

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

for LH

Tester Connection	Condition	Specified Condition
E41-3 (MOL+) - E41-4 (MOL-)	Always	Below 100 Ω

for RH

Tester Connection	Condition	Specified Condition
E41-1 (MOR-) - E41-2 (MOR+)	Always	Below 100 Ω

2.	CHECK HARNESS AND CONNECTOR (FRONT SEAT OUTER BELT - SEAT BELT CONTROL ECU)

(a) Disconnect the E41 seat belt control ECU connector.

(b) Disconnect the K11*1 or L5*2 front seat outer belt connector.

*1: for LH

*2: for RH

(c) Using a service wire, connect K11-1*1 and K11-2*1 or L5-1*2 and L5-2*2 of the connector on the front seat outer belt assembly.

NOTICE:

Do not forcibly insert the service wire into the terminals of the connector.

(d) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

for LH

Tester Connection	Condition	Specified Condition
E41-3 (MOL+) - E41-4 (MOL-)	Always	Below 1 Ω

for RH

Tester Connection	Condition	Specified Condition
E41-1 (MOR-) - E41-2 (MOR+)	Always	Below 1 Ω

Result

Proceed to

(for DTC B2002)

(for DTC B2007)