Inspection Procedure

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

   Luggage room junction block ECU 

   ACTIVE TEST DETAIL - LUGGAGE ROOM JUNCTION BLOCK ECU
   
   

   Item	Test Details	Diagnostic Note
   TAILLIGHT	Taillight ON / OFF	-

   OK: Taillight illuminates. 

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

NG: Go to Next step 

Fig 1: Identifying Rear Combination Light Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Remove the rear combination light.
2. Apply battery voltage to the rear combination light connector and check that the taillight illuminates.

   OK 

   MEASUREMENT CONDITION AND SPECIFIED CONDITION
   
   

   Measurement Condition	Specified Condition
   Battery positive (+) → Terminal 1 Battery negative (-) → Terminal 4	Taillight illuminates

NG: REPLACE REAR COMBINATION LIGHT ASSEMBLY 

OK: Go to Next step 

1. Disconnect the 6L junction block connector.
   Fig 2: Identifying 6L Junction Block Connector Terminal

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance of the wire harness side connector.

   Standard resistance 

   RESISTANCE SPECIFICATION
   
   

   Tester Connection	Specified Condition
   6L-1 (TAIL) - Body ground	Below 1 Ω

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

OK: Go to Next step 

1. Disconnect the R6*1 or R7*2 light connector.

   HINT:

   *1: LH

   *2: RH

2. Disconnect the L24 ECU connector.
3. Measure the resistance of the wire harness side connectors.

   Standard resistance: 

   LH 

   RESISTANCE SPECIFICATION
   
   

   Tester Connection	Specified Condition
   R6-1 -L24-1 (TIL1)	Below 1 Ω
   R6-4 - Body ground	Below 1 Ω
   R6-1 - Body ground	10 kΩ or higher

   RH 

   RESISTANCE SPECIFICATION
   
   

   Tester Connection	Specified Condition
   R7-1 - L24-1 (TIL1)	Below 1 Ω
   R7-4 - Body ground	Below 1 Ω
   R7-1 - Body ground	10 kΩ or higher

   Fig 3: Identifying Rear Combination Light And Luggage Room Junction Block ECU Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

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