Headlight Dimmer Switch Circuit [08/2015 - 08/2017]: Procedure

1. Remove the headlight dimmer switch assembly (Refer to REMOVAL [08/2015 - 08/2017] ).

   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
   13 (TR) - 12 (EL)	Turn signal switch right turn	Below 1 Ω
   	Turn signal switch left turn	10 kΩ or higher
   15 (TL) - 12 (EL)	Turn signal switch left turn	Below 1 Ω
   	Turn signal switch right turn	10 kΩ or higher

3. Reinstall the headlight dimmer switch assembly.

Result: 

NG 

REPLACE HEADLIGHT DIMMER SWITCH ASSEMBLY 

(Refer to REMOVAL [08/2015 - 08/2017] )

Result: 

OK 

See step  2

1. Disconnect the H11 headlight dimmer switch assembly connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

2. Disconnect the H39 turn signal flasher assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   H11-13 (TR) - H39-7 (ER)	Always	Below 1 Ω
   H11-15 (TL) - H39-6 (EL)	Always	Below 1 Ω
   H11-12 (EL) - Body ground	Always	Below 1 Ω
   H11-13 (TR) - Body ground	Always	10 kΩ or higher
   H11-15 (TL) - Body ground	Always	10 kΩ or higher

4. Reconnect the turn signal flasher assembly connector.
5. Reconnect the headlight dimmer switch assembly connector.

Result: 

OK 

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE 

(Refer to PROBLEM SYMPTOMS TABLE [08/2015 - 08/2017] )

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR