SRS Warning Light does not Come ON [11/2015 - ]: Procedure

1. Measure the voltage of the auxiliary battery.

   Standard Voltage

   11 to 14 V

Result: 

NG 

INSPECT CHARGING SYSTEM AND AUXILIARY BATTERY 

(Refer to ON-VEHICLE INSPECTION [11/2015 - 06/2017]

Result: 

OK 

See step  2

1. Turn the ignition switch off.
2. Disconnect the cable from the negative (-) auxiliary battery terminal.
   WARNING:

   Wait at least 90 seconds after disconnecting the cable from the negative (-) auxiliary battery terminal to disable the SRS system.

3. Check that the connector is properly connected to the combination meter assembly.

   OK

   The connector is properly connected.

   HINT: 

   If the connector is not connected securely, reconnect the connector and proceed to the next inspection.

4. Disconnect the connector from the combination meter assembly.
5. Check that the terminal of the connector is not damaged.

   OK

   The terminal is not deformed or damaged.

Result: 

NG 

REPAIR OR REPLACE CONNECTOR 

Result: 

OK 

See step  3

1. Connect the cable to the negative (-) auxiliary battery terminal.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

2. Turn the ignition switch to ON (IG).
3. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   G1-21 (IG+) - Body ground	Ignition switch ON (IG)	11 to 14 V
   G1-1 (B) - Body ground	Ignition switch off	11 to 14 V

4. Turn the ignition switch off.
5. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   G1-20 (ET) - Body ground	Always	Below 1 Ω

   TEXT IN ILLUSTRATION
   
   

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

Result: 

NG 

REPAIR OR REPLACE WIRE HARNESS 

Result: 

OK 

See step  4

1. Disconnect the cable from the negative (-) auxiliary battery terminal.
   WARNING:

   Wait at least 90 seconds after disconnecting the cable from the negative (-) auxiliary battery terminal to disable the SRS system.

2. Connect the connector to the combination meter assembly.
3. Disconnect the connector from the airbag sensor assembly.
4. Connect the cable to the negative (-) auxiliary battery terminal.
5. Turn the ignition switch to ON (IG).
6. Check the SRS warning light condition.

   OK

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

   HINT: 

   The primary check period is approximately 6 seconds after the ignition switch is turned to ON (IG).

Result: 

OK 

REPLACE AIRBAG SENSOR ASSEMBLY 

(Refer to REMOVAL [11/2015 - ] )

Result: 

NG 

REPLACE COMBINATION METER ASSEMBLY 

(Refer to REMOVAL [11/2015 - ] )