Inspection Procedure

NG: REPLACE HEADLIGHT DIMMER SWITCH ASSEMBLY 

OK: GO TO NEXT STEP 

1. Disconnect the TVIP ECU and light control switch connectors.
2. Measure the resistance according to the value(s) in TVIP ECU - LIGHT CONTROL SWITCH  .

   Standard resistance 

   TVIP ECU - LIGHT CONTROL SWITCH
   
   

   Tester Connection	Specified Condition
   HEAD (T3-6) - RF (C12-12)	Below 1 Ω

   Fig 1: Checking Harness And Connector (TVIP ECU - Light Control Switch)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: GO TO NEXT STEP 

1. Disconnect the light control switch connector.
2. Measure the resistance according to the value(s) in LIGHT CONTROL SWITCH - BODY GROUND  .

   Standard resistance 

   LIGHT CONTROL SWITCH - BODY GROUND
   
   

   Tester Connection	Specified Condition
   T (C12-10) - Body ground	Below 1 Ω

   Fig 2: Checking Harness And Connector (Light Control Switch - Body Ground)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: REPLACE TVIP ECU