No speedometer or tachometer lights during day - Toyota Yaris Forums

cdavidhess · 06-26-2009, 05:56 PM

Yes

CTScott · 06-26-2009, 07:31 PM

Quote:

Originally Posted by cdavidhess

Yes

OK. So, the input from the headlight switch to the combo meter is working. That really seems to point to the rheostat module. If you have a voltmeter and want to further test, you can check the voltage on pin 7 (ILL-) of the 24 pin connector to the combo meter. When the headlights are off it should read 0V to ground. With the headlights on it will read somewhere between 0V (full brightness of the speedo) to 12V (speedo fully dimmed).

If you see normal readings for the headlight mode, and 12V, rather than 0V with the headlights off, then that will confirm that it's the rheostat module.

Combo Meter conn.jpg

06-26-2009, 05:56 PM	#1
cdavidhess Drives: 2008 White Yaris Sedan 5 speed Join Date: Oct 2008 Location: Rochester, NY Posts: 46	Yes __________________

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