Inspection Procedure

1. Check if a CAN communication DTC is output (see DIAGNOSIS SYSTEM ).

   Result 

   RESULT
   
   

   Condition	Proceed to
   DTC is not output	A
   DTC is output	B

B: REPAIR CIRCUITS INDICATED BY OUTPUT DTCS 

A: Go to next step 

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

   OK: 

   The connectors are properly connected. 

NG: CONNECT CONNECTOR 

OK: Go to next step 

1. Disconnect the E45 connector from the center airbag sensor.
Fig 1: Identifying E45 Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
3. Turn the ignition switch ON.
4. Operate all components of the electrical system (defogger, wipers, headlight, heater blower, etc.).
5. Measure the voltage of the wire harness side connectors.

   Standard voltage 

   TESTER CONNECTION SPECIFIED CONDITION
   
   

   Tester Connection	Specified Condition
   E45-21 (IG2) - Body ground	10 to 14 V

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

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION
   
   

   Tester Connection	Specified Condition
   E45-25 (E1) - Body ground	Below 1 Ω
   E45-26 (E2) - Body ground	Below 1 Ω

NG: REPAIR OR REPLACE WIRE HARNESS 

OK: Go to next step 

1. Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
2. Disconnect the E19 connector from the combination meter.
Fig 2: Identifying E19 Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
4. Turn the ignition switch ON.
5. Measure the voltage of the wire harness side connectors.

   Standard voltage 

   TESTER CONNECTION 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

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

   Standard resistance 

   TESTER CONNECTION 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 light condition.

   OK: 

   After the primary check period, SRS warning light goes off for approximately 10 seconds, and turning it on is continued. 

   HINT:

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

NG: GO TO  COMBINATION METER SYSTEM

OK: REPLACE CENTER AIRBAG SENSOR ASSEMBLY