SRS Warning Light does not Come ON [08/2019 - ]: Procedure

1. Measure the voltage of the battery.

   Standard voltage

   11 to 14 V

Result: 

NG 

REPLACE OR RECHARGE BATTERY 

Result: 

OK 

See step  2

1. Turn the engine switch off.
2. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
3. Check that the connectors are properly connected to the combination meter.

   OK

   The connectors are properly connected.

Result: 

NG 

CONNECT CONNECTORS PROPERLY 

Result: 

OK 

See step  3

1. Turn the engine switch off.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

2. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
3. Disconnect the G3 connector from the combination meter.
4. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
5. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   G3-22 (IG+) - G3-20 (MGND)	Engine switch on (IG)	11 to 14 V
   G3-21 (B) - G3-20 (MGND)	Always	11 to 14 V

   TEXT IN ILLUSTRATION
   
   

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

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  4

1. Turn the engine switch off.
2. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
3. Connect the connector to the combination meter.
4. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
5. Turn the engine switch on (IG).
6. Check the SRS warning light condition.
   NOTE:

   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).

Result: 

OK 

REPLACE CENTER AIRBAG SENSOR ASSEMBLY 

(Refer to REMOVAL [08/2015 - ] )

Result: 

NG 

GO TO METER / GAUGE SYSTEM 

(Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2019 - ] )