SRS Warning Light does not Come ON [09/2014 - ]: Procedure

1. Measure the voltage of the battery.

   Standard Voltage

   11 to 14 V

   Result

   Result	Proceed to
   OK	A
   NG (for 2AR-FE)	B
   NG (for 2GR-FE)	C

B → See step   6 

C → See step   8 

A: Go to next step 

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

   Wait at least 90 seconds after disconnecting the cable from the negative (-) 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.

NG → REPAIR OR REPLACE CONNECTOR 

OK: Go to next step 

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

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   I18-13 (IG+) - Body ground	Ignition switch ON	11 to 14 V
   I18-1 (B) - Body ground	Always	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

   W/O MULTI-INFORMATION DISPLAY:
   
   

   Tester Connection	Condition	Specified Condition
   I18-7 (ES) - Body ground	Always	Below 1 Ω

   W/ MULTI-INFORMATION DISPLAY:
   
   

   Tester Connection	Condition	Specified Condition
   I18-20 (ES) - Body ground	Always	Below 1 Ω

   TEXT IN ILLUSTRATION
   
   

   *A	w/o Multi-information Display
   *B	w/ Multi-information Display
   *a	Front view of wire harness connector (to Combination Meter Assembly)

NG → REPAIR OR REPLACE WIRE HARNESS 

OK: Go to next step 

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

   Wait at least 90 seconds after disconnecting the cable from the negative (-) 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 (-) battery terminal.
5. Turn the ignition switch to ON and check the SRS warning light condition.

   OK

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

   HINT: 

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

NG → See step   7 

OK → See step   5