SRS Warning Light does not Come ON: Procedure

1. Measure the voltage of the battery.

   Standard voltage

   11 to 14 V

NG → CHECK AND REPLACE BATTERY OR CHARGING SYSTEM 

OK: Go to next step 

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

   OK

   The connector is properly connected.

NG → CONNECT CONNECTOR PROPERLY 

OK: Go to next step 

1. Turn the ignition switch off.
   Fig 1: Identifying Wire Harness Connector Terminal Identification

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
3. Disconnect the F1 connector from the combination meter assembly.
4. Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
5. Turn the ignition switch on (IG).
6. Measure the voltage according to the value(s) in the table below.

   Standard voltage

   Tester Connection	Condition	Specified Condition
   F1-1 (B) - Body ground	Always	10 to 14 V
   F1-2 (B2) - Body ground	Always	10 to 14 V
   F1-13 (IG+) - Body ground	Ignition switch on (IG)	10 to 14 V

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

   Standard resistance

   Tester Connection	Condition	Specified Condition
   F1-12 (E2) - Body ground	Always	Below 1 Ω
   F1-24 (ES) - Body ground	Always	Below 1 Ω

NG → REPAIR OR REPLACE WIRE HARNESS 

OK: Go to next step 

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

   OK

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

   HINT: 

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

NG → See step   6 

OK → See step   5