Headlight Dimmer Switch: Inspection
WARNING: This page is about a different car, the 2008 Lexus RX 350. However, it is still accessible from the selected car via links, so may be relevant.
- INSPECT HEADLIGHT DIMMER SWITCH
- Measure the resistance according to the value(s) in the table below.
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Resistance:
Light control switch
LIGHT CONTROL SWITCHTester connection Switch condition Specified condition 12 - 18 OFF 10 kΩ or higher 18 - 19 OFF 10 kΩ or higher 19 - 20 OFF 10 kΩ or higher 12 - 18 TAIL Below 1 Ω 12 - 18 HEAD Below 1 Ω 18 - 20 HEAD Below 1 Ω 12 - 19 AUTO Below 1 Ω Headlight dimmer switch
HEADLIGHT DIMMER SWITCHTester connection Switch condition Specified condition 12 - 17 FLASH Below 1 Ω 12 - 16 LOW BEAM Below 1 Ω 11 - 12 HI BEAM Below 1 Ω Turn signal switch
TURN SIGNAL SWITCHTester connection Switch condition Specified condition 12 - 13 Right turn Below 1 Ω 12 - 13 Neutral 10 kΩ or higher 13 - 15 Neutral 10 kΩ or higher 12 - 15 Left turn Below 1 Ω Fog light switch
FOG LIGHT SWITCHTester connection Switch condition Specified condition 3 - 4 OFF 10 kΩ or higher 3 - 4 Fog light switch ON Below 1 Ω If the result is not as specified, replace the headlight dimmer switch.
- Measure the resistance according to the value(s) in the table below.