Inspection Procedure

1. Select the ACTIVE TEST, use the intelligent tester (with CAN VIM) to generate a control command, and then check that the indicator illuminates.

   Theft warning ECU 

   ACTIVE TEST DETAIL - THEFT WARNING ECU
   
   

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

   OK: 

   Security indicator operates normally. 

OK: REPLACE THEFT WARNING ECU ASSEMBLY 

NG: Go to next step 

Fig 1: Identifying Outer Mirror Switch Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Remove the outer mirror switch.
2. Apply battery voltage between the terminals of the indicator, and check the lighting condition of the security indicator.
   NOTE:

   • If the positive (+) lead and the negative (-) lead are incorrectly connected, the security indicator does not illuminate.
   • A voltage of more than 12 V will damage the security indicator.
   • If the voltage is too low, the security indicator will not illuminate.

   OK 

   MEASUREMENT CONDITION AND SPECIFIED CONDITION
   
   

   Measurement Condition	Specified Condition
   Battery positive (+) → Terminal 3 (LP) Battery negative (-) → Terminal 5 (E)	Illuminates

NG: REPLACE OUTER MIRROR SWITCH ASSEMBLY 

OK: Go to next step 

Fig 2: Identifying Outer Mirror Switch Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the M4 switch connector.
2. Measure the resistance of the wire harness side connector.

   Standard resistance 

   RESISTANCE SPECIFICATION
   
   

   Tester Connection	Specified Condition
   M4-5 (E) - Body ground	Below 1 Ω

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

OK: Go to next step 

Fig 3: Identifying Theft Warning ECU And Outer Mirror Switch Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the T7 ECU connector.
2. Disconnect the M4 switch connector.
3. Measure the resistance of the wire harness side connectors.

   Standard resistance 

   RESISTANCE SPECIFICATION
   
   

   Tester Connection	Specified Condition
   T7-3 (IND) - M4-3 (LP)	Below 1 Ω
   T7-3 (IND) or M4-3 (LP) - Body ground	10 kΩ or higher

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

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