SRS Warning Light does not Come ON [12/2012 - ]: Procedure

CHECK BATTERY

Measure the voltage of the battery.

Standard voltage

11 to 14 V

Result	Proceed to
	OK
	NG

Result:

REPLACE OR RECHARGE BATTERY

Result:

See step 2

CHECK CONNECTION OF CONNECTORS

Turn the ignition switch off.
Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.

Check that the connectors are properly connected to the combination meter assembly.

Result	Proceed to
	The connectors are properly connected
	The connectors are not properly connected

Result:

The connectors are not properly connected

CONNECT CONNECTORS PROPERLY

Result:

The connectors are properly connected

See step 3

CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - BATTERY AND BODY GROUND)

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

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

*a	Front view of wire harness connector (to Combination Meter Assembly)

Disconnect the G16 connector from the combination meter assembly.
Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
Turn the ignition switch to ON.

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

Standard Voltage

Tester Connection	Condition	Specified Condition
G16-39 (IG+) - Body ground	Ignition switch ON	11 to 14 V
G16-40 (B) - Body ground	Always	11 to 14 V

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

Standard Resistance

Tester Connection	Condition	Specified Condition
G16-21 (ET) - Body ground	Always	Below 1 Ω

Result	Proceed to
	OK
	NG

Result:

REPAIR OR REPLACE HARNESS OR CONNECTOR

Result:

See step 4

CHECK SRS WARNING LIGHT (SHORT TO GROUND)

Turn the ignition switch off.
Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
Connect the connector to the combination meter assembly.
Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
Turn the ignition switch to ON.

Check the SRS warning light condition.

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 ignition switch is turned to ON.

Result	Proceed to
	OK
	NG

Result:

REPLACE AIRBAG SENSOR ASSEMBLY. Refer to REMOVAL [12/2012 - ] .

Result: