Inspection Procedure

1. Measure the voltage according to the value(s) in TRANSPONDER KEY ECU - BATTERY  .

   Standard voltage 

   TRANSPONDER KEY ECU - BATTERY
   
   

   Tester Connection	Condition	Specified Condition
   T10-1 (+B) - Body ground	Always	10 to 14 V
   T10-2 (IG) - Body ground	Ignition switch OFF	Below 1 V
   T10-2 (IG) - Body ground	Ignition switch ON	10 to 14 V

   Fig 1: Checking Harness And Connector (Transponder Key ECU - Battery)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: GO TO NEXT STEP 

1. Disconnect the T10 ECU connector.
2. Measure the resistance according to the value(s) in TRANSPONDER KEY ECU - BODY GROUND  .

   Standard resistance 

   TRANSPONDER KEY ECU - BODY GROUND
   
   

   Tester Connection	Condition	Specified Condition
   T10-16 (GND) - Body ground	Always	Below 1 Ω

   Fig 2: Checking Harness And Connector (Transponder Key ECU - Body Ground)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN  PROBLEM SYMPTOMS TABLE