Inspection Procedure

HINT:

When a malfunction code other than code B1100/31 is displayed at the same time, first repair the malfunction indicated by the malfunction code other than code B1100/31.

1. CHECK CENTER AIRBAG SENSOR ASSEMBLY 
   1. Turn the ignition switch to LOCK.
   2. Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
   3. Disconnect the connectors from the center airbag sensor.
   4. Connect the negative (-) terminal cable to the battery, and wait at least for 2 seconds.
   5. Turn the ignition switch to ON.
   6. Measure the voltage between the body ground and IG2 of the C26 dash wire connector on the center airbag sensor side.

      Standard voltage: 10 to 14 V 

   Fig 1: Checking Center Airbag Sensor Assembly

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   NG: CHECK THAT ABNORMALITY OCCURS ON BATTERY AND CHARGING SYSTEM 

   OK: GO TO NEXT STEP 

2. CHECK FOR DTC 
   1. Clear the DTC (see DTC CHECK/CLEAR  ).
   2. Turn the ignition switch to LOCK, and wait at least for 10 seconds.
   3. Turn the ignition switch to ON, and wait at least for 10 seconds.
   4. Repeat the first 2 step at least 5 times.
   5. Check the DTC (see DTC CHECK/CLEAR  ).

      OK: DTC B1100/31 is output. 

      HINT:

      Codes other than code B1100/31 may be output at this time, but they are not relevant to this check.

   Fig 2: Checking For DTC

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   NG: USING SIMULATION METHOD, REPRODUCE MALFUNCTION SYMPTOMS 

   OK: REPLACE CENTER AIRBAG SENSOR ASSEMBLY