Inspection 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 E19 connectors are properly connected to the center airbag sensor and the combination meter.

OK: The connectors are properly connected. 

NG: CONNECT CONNECTORS, THEN GO TO STEP  1

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. Disconnect the connector from the combination meter.
4. Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
5. Turn the ignition switch ON.
6. Measure the voltage of the wire harness side connectors.
   Fig 1: Checking Wire Harness (Source Voltage Of Combination Meter)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard voltage 

   TESTER CONNECTION AND SPECIFIED CONDITION
   
   

   Tester Connection	Condition	Specified Condition
   E19-21 (IG+) - Body ground	Ignition switch ON	10 to 14 V
   E19-22 (B) - Body ground	Always	10 to 14 V

7. Turn the ignition switch OFF.
8. Measure the resistance of the wire harness side connectors.

   Standard resistance 

   TESTER CONNECTION AND SPECIFIED CONDITION
   
   

   Tester Connection	Specified Condition
   E19-33 (ET) - Body ground	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 E19 connector to the combination meter.
4. Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
5. Turn the ignition switch ON.
6. Check the SRS warning fight condition.

OK: The SRS warning light does not come on. 

NG:  GO TO COMBINATION METER

OK: REPLACE CENTER AIRBAG SENSOR ASSEMBLY