Headlight Cleaner Switch Circuit: Procedure

1. Check that the headlights illuminate in LO beam.

   OK

   Headlights illuminate in LO beam

NG → See step   4 

OK: Go to next step 

1. Disconnect the E95 cleaner switch connector.

   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
   3 (B) - 4 (L)	Headlight cleaner switch off	10 kΩ or higher
   3 (B) - 4 (L)	Headlight cleaner switch on	Below 1 Ω

NG → See step   6 

OK: Go to next step 

1. Disconnect the relay connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

2. Disconnect the E95 switch connector.
3. Disconnect the 2D main body ECU connector.
4. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   2 (H) - E95-3 (B)	Always	Below 1 Ω
   E95-4 (L) - 2D-23 (HRLY)
   2 (H) - Body ground	Always	10 kΩ or higher
   E95-3 (B) - Body ground
   E95-4 (L) - Body ground
   2D-23 (HRLY) - Body ground

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   5