Headlight Dimmer Switch: Inspection
WARNING: This page is about a different car, the 2007 Lexus ES 350. However, it is still accessible from the selected car via links, so may be relevant.
- INSPECT HEADLIGHT DIMMER SWITCH ASSEMBLY
- Measure the resistance according to the value(s) in the table below.
Standard resistance: Light control switch
TESTER CONNECTION SPECIFIED CONDITIONTester Connection Switch Condition Specified Condition 12 (EL) - 20 (H) - 18 (T) - 19 (A) OFF 10 kΩ or higher 12 (EL) - 18 (T) TAIL Below 1 Ω 12 (EL) - 20 (H) -18 (T) HEAD Below 1 Ω 12 (EL) - 19 (A) AUTO Below 1 Ω Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Dimmer switch
TESTER CONNECTION SPECIFIED CONDITIONTester Connection Switch Condition Specified Condition 17 (HF) - 12 (EL) FLASH Below 1 Ω 11 (HU) - 12 (EL) HIGH Below 1 Ω Turn signal switch
TESTER CONNECTION SPECIFIED CONDITIONTester Connection Switch Condition Specified Condition 13 (TR) - 12 (EL) - 15 (TL) OFF 10 kΩ or higher 13 (TR) - 12 (EL) RH Below 1 Ω 15 (TL) - 12 (EL) LH Below 1 Ω Fog light switch
TESTER CONNECTION SPECIFIED CONDITIONTester Connection Switch Condition Specified Condition 3 (LFG) - 4 (BFG) OFF 10 kΩ or higher 3 (LFG) - 4 (BFG) ON Below 1 Ω If the result is not as specified, replace the headlight dimmer switch assembly.
- Measure the resistance according to the value(s) in the table below.