2002 Ford Explorer electrical

THOMAS E. MARGRAFF

MEMBER
2002 FORD EXPLORER

Air Conditioning problem
2002 Ford Explorer Two Wheel Drive Automatic

No a/c blower speeds. Disconnected 1 & 2 speed wires from blower switch. Now have high speed. When I turn on headlights then a/c selector switch there's no a/c (blower). I then reverse the action a/c on first then headlights, I have a/c. Also instrument cluster lights go dim to out. Are they 6 volt or 12 volt bulbs.

5 Replies

KHLOW2008

MECHANIC
41,815 POSTS

Hi Thomas E. Margraff,

Thank you for the donation.

All bulbs used are 12 volts.

Did you check the charging rate of the alternator?

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Saturday, July 17th, 2010 AT 4:53 PM

THOMAS E. MARGRAFF

MEMBER
3 POSTS

Atenator charge is 14.43 volts

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Sunday, July 18th, 2010 AT 9:19 AM

KHLOW2008

MECHANIC
41,815 POSTS

Charging rate is correct.
Was it done with the headlights and blower turned on?
Are there any other components that do not seem to work correctly?
Any performance or cranking issues?

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Sunday, July 18th, 2010 AT 1:58 PM

THOMAS E. MARGRAFF

MEMBER
3 POSTS

High speed blower & Headlights on - 14.17 Volts. No other problems I know of. But found a red/blk wire coming out of the microprossessor at main light switch with less than a volt. It feeds the instr. Cluster lights an also goes to the audio/climate control switch & the speed control switch. The microposseor is getting 9.35 Volts with low beams on.

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Sunday, July 18th, 2010 AT 4:40 PM

KHLOW2008