Headlight Cleaner Switch Circuit: Procedure

1. Remove the headlight cleaner switch assembly. Refer to INSPECTION [06/2012 - ] .

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

2. Measure the resistance according to the value(s) in the table below.
   STANDARD RESISTANCE
   
   

   Tester Connection	Switch Condition	Specified Condition
   5 - 8	Headlight cleaner switch on	Below 1 Ω
   5 - 8	Headlight cleaner switch off	10 kΩ or higher

NG → See step   4 

OK: Go to next step 

1. Disconnect the G54 headlight cleaner switch connector.
2. Disconnect the A32 headlight cleaner control relay connector.
3. Remove the main body ECU. Refer to REMOVAL [06/2012 - ] .
4. Measure the resistance according to the value(s) in the table below.
   STANDARD RESISTANCE
   
   

   Tester Connection	Condition	Specified Condition
   G54-8 - A32-2 (H)	Always	Below 1 Ω
   G54-5 - A-15 (HRLY)	Always	Below 1 Ω
   G54-8 - Body ground	Always	10 kΩ or higher
   G54-5 - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   3