Fan switch only operates on high
Feb 16, 2011 at 10:43 PM
Fan Switch
2003 MAZDA PROTEGE
MIKED
- MEMBER
- 2 POSTS
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ERNEST CLARK
- ✓ASE Certified Mechanic
- 1,730 POSTS
Check the resistor pack. You'll need to remove the glove compartment. It's located behind and down.
Feb 16, 2011 at 11:59 PM
Is there a test to determine if the unit is bad? Also, is this part available only at the dealer?
Thanks for your help.
Thanks for your help.
Feb 17, 2011 at 5:09 PM
ERNEST CLARK
- ✓ASE Certified 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.
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.
Feb 18, 2011 at 1:46 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.