Inspection Procedure

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

   Front light ECU (Front controller) 

   ACTIVE TEST DETAIL - FRONT LIGHT ECU (FRONT CONTROLLER)
   
   

   Item	Test Details	Diagnostic Note
   CLEARANCE LIGHT	Clearance light ON / OFF	-

   OK: Clearance light illuminates. 

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

NG: Go to Next step 

1. Remove the clearance light.
2. Apply battery to the clearance light connector and check that the clearance light illuminates.
   Fig 1: Identifying Clearance Light Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   OK 

   MEASUREMENT CONDITION AND SPECIFIED CONDITION
   
   

   Measurement Condition	Specified Condition
   Battery positive (+) → Terminal 2 Battery negative (-) → Terminal 1	Clearance light illuminates.

NG: REPLACE CLEARANCE LIGHT ASSEMBLY 

OK: Go to Next step 

1. Remove the CRA relay from the engine room No. 2 relay block.
   Fig 2: Identifying CRA Relay Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance of the relay.

   Standard resistance 

   RESISTANCE SPECIFICATION
   
   

   Tester Connection	Specified Condition
   3 - 5	10 kΩ or higher
   3 - 5	Below 1 Ω (when battery voltage is applied to terminals 1 and 2)

NG: REPLACE RELAY 

OK: Go to Next step 

1. Remove the front light ECU from the engine room No. 2 relay block.
   Fig 3: Identifying Front Light ECU Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Using a service wire, connect the front light ECU terminal 15 (TAIL-RLY) of the engine room No. 2 relay block on the wire harness side and body ground.
3. Check that the clearance light illuminates.

   OK: Clearance light illuminates. 

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

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