Fan Switch

Tiny
MIKED
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  • 2003 MAZDA PROTEGE
  • 4 CYL
  • FWD
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Fan switch only operates on high
Wednesday, February 16th, 2011 AT 10:43 PM

3 Replies

Tiny
ERNEST CLARK
  • MECHANIC
  • 1,730 POSTS
Check the resistor pack. You'll need to remove the glove compartment. It's located behind and down.
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Wednesday, February 16th, 2011 AT 11:59 PM
Tiny
MIKED
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Is there a test to determine if the unit is bad? Also, is this part available only at the dealer?

Thanks for your help.
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Thursday, February 17th, 2011 AT 5:09 PM
Tiny
ERNEST CLARK
  • MECHANIC
  • 1,730 POSTS
You'll need a voltmeter.

RESISTOR INSPECTION

Remove the glove compartment.
Disconnect the resistor connector.

TERMINAL RESISTOR (OHMS)
G-A 0.17-0.19
G-E 0.51-0.58
G-C 2.35-2.70

I can't upload an illustration on my computer. But when you remove the resistor pack, look directly into the terminal with the tap facing up. The terminals will be as follows, left to right:

G-E-C-A

Place the red test lead into the G terminal and alternate the black lead in e, c, a, recording each reading.

Verify that the resistance between the terminals of the resistor is as indicated in the table.
If not as specified, replace the resistor.
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Friday, February 18th, 2011 AT 1:46 PM

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