Home Vehicle Interior Supplemental Restraint Systems AIRBAG SYSTEM
Last Modified: 11-27-2007 1.6 J
Service Category: Vehicle Interior Section: Supplemental Restraint Systems
Model Year: 2008 Model: LX570 Doc ID: RM000000YE3046X
Title: SUPPLEMENTAL RESTRAINT SYSTEMS: AIRBAG SYSTEM: DESCRIPTION (2008 LX570)

SRS Warning Light does not Come ON

DESCRIPTION

Refer to "SRS Warning Light Remains ON" SUPPLEMENTAL RESTRAINT SYSTEMS: AIRBAG SYSTEM: DESCRIPTION (2008 LX570) .

WIRING DIAGRAM

Refer to "SRS Warning Light Remains ON" SUPPLEMENTAL RESTRAINT SYSTEMS: AIRBAG SYSTEM: DESCRIPTION (2008 LX570)+ .

INSPECTION PROCEDURE

PROCEDURE

1.

CHECK BATTERY

(a) Measure the voltage of the battery.

Standard voltage:

11 to 14 V

OK

2.

CHECK CONNECTOR

(a) Turn the engine switch off.

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

(c) Check that the connectors are properly connected to the combination meter.

OK:

The connectors are properly connected.

OK

3.

CHECK HARNESS AND CONNECTOR (SOURCE VOLTAGE OF COMBINATION METER)



(a) Turn the engine switch off.

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

(c) Disconnect the E77 connector from the combination meter.

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

(e) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection

Switch Condition

Specified Condition

E77-30 (IG+) - E77-26 (ET)

Engine switch on (IG)

11 to 14 V

E77-21 (B) - E77-26 (ET)

Always

11 to 14 V

OK

4.

CHECK SRS WARNING LIGHT (SHORT TO GROUND)

(a) Turn the engine switch off.

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

(c) Connect the connector to the combination meter.

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

(e) Turn the engine switch on (IG).

(f) Check the SRS warning light condition.

NOTICE:

Make sure that nobody is in the vehicle.

OK:

After the primary check period, the SRS warning light goes off for approximately 10 seconds and then remains on.

HINT:

The primary check period is approximately 6 seconds after the engine switch is turned on (IG).

OK