Inspection Procedure

1. Select the ACTIVE TEST, use the intelligent tester to generate a control command, and then check the security indicator light function.

   Transponder key ECU assembly: 

   ACTIVE TEST LIST - TRANSPONDER KEY ECU ASSEMBLY
   
   

   Item	Test Details	Diagnostic Note
   SECURITY INDIC	Turn security indicator ON/OFF	-

2. Measure the voltage of the T27 ECU connector.
   Fig 1: Measuring Voltage Of T27 ECU Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard voltage: 

   w/ Navigation system 

   VOLTAGE SPECIFICATIONS
   
   

   Tester Connection	Security Indicator Light Condition	Specified Condition
   T27-3 (IND) - Body ground	ON	8 to 10 V
   	OFF	Below 1 V

   w/o Navigation system 

   VOLTAGE SPECIFICATIONS
   
   

   Tester Connection	Security Indicator Light Condition	Specified Condition
   T27-3 (IND) - Body ground	ON	3 to 6 V
   	OFF	Below 1 V

NG:  Go to NAVIGATION SYSTEM (w/ NAVIGATION), MULTI-DISPLAY SYSTEM (w/o NAVIGATION SYSTEM)

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