Cooling fan do not switch on when.

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2001 TOYOTA TAZZ
200,000 MILES

Cooling fan do not switch on
when connecting power dirrectly to fan it works
replaced cooling fan switch - still not working

Sunday, March 10th, 2013 AT 8:01 AM

9 Replies

KHLOW2008

MECHANIC
41,814 POSTS

Were the relays tested and fuses checked?

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Sunday, March 10th, 2013 AT 9:40 AM

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Good day

Replace fan relay and all fuses under hood

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Tuesday, March 26th, 2013 AT 12:17 PM

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When I unplug cable from cooling fan switch the fan should go on but it do not go on.

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Tuesday, March 26th, 2013 AT 12:21 PM

KHLOW2008

MECHANIC
41,814 POSTS

You need a test light or DVOM to perform testings, not by replacing everything you can think of.

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Tuesday, March 26th, 2013 AT 2:23 PM

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The fan relay and fan fuses where very cheap but I do get what you saying.
My mech have test the fuses and relay and according to him he could not pick up any issue

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Tuesday, March 26th, 2013 AT 2:29 PM

KHLOW2008

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41,814 POSTS

First of all you need to understand the system and how it opearates. Next you check the power source and relay controls.

Do the fans operate when the relay terminals are bridged?

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Tuesday, March 26th, 2013 AT 2:57 PM

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No It did not work when bridged

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Tuesday, March 26th, 2013 AT 3:14 PM

KHLOW2008

MECHANIC
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That mean either the relay is not getting power or there is a break between the relay and fan motor. You need an electrician, seems your mechaninc does not under electrical circuits.

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Tuesday, March 26th, 2013 AT 3:16 PM

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