Question about 2007 Hyundai Tucson Limited

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Multifunction switch located in a/c system

A/C fuse blows when the a/c system is turned on.Could this be multi-switch issue?

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I'm showing two fuses for the controller, but the fuse marked ac should be just for the compressor clutch. Not to say the controller is not the problem, but chances are its the ac clutch.

Posted on Jul 23, 2013

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No Low beam headlights


Do you know how to test automotive electrical circuits using a DMM - digital multi-meter ?
Principles of Operation
The headlamp switch is supplied power at all times from the smart junction box (SJB). When the headlamps switch is placed in the headlamps ON position, power is routed to the multifunction switch. Depending on the position of the multifunction switch, power is routed through one of two circuits to the SJB. If the multifunction switch is in the high beam position, power is routed through SJB fuse 12 (15A) and then on to the high beam headlamps. If the multifunction switch is in the low beam position, power is routed through SJB fuses 11 (10A) and 15 (10A) to the LH and RH headlamps, respectively. Power to the multifunction switch is available at all times for the flash-to-pass feature.

Is there B+ voltage at fuse's # 11 & 15 with headlamps on an the multifunction switch is in the low beam position ? If not check for B+ voltage at the multifunction switch . Free wiring diagrams here
http://www.bbbind.com/free-tsb Enter your vehicle info. year , make , model an engine . Under system click on lighting then under subsystem click headlamps . Click the search button then the blue link .
Basic Electricity for Service Techs Ohm law Current Flow Opens Shorts
Electric Testing Techniques You Need to Know

Feb 04, 2018 | Ford Taurus Cars & Trucks

2 Answers

Keep blowing tail light fuse 45 on my 2002 Pontiac Grand Am?


There is an issue, you have a dead short in the circuit, no quick fix for this. You must first get a wiring diagram of the entire circuit and then follow it until you locate the shorted wire or component.

Sep 12, 2016 | 2002 Pontiac Grand Am

1 Answer

My turn signals don't always work and the flasher warning doesn't seem to work. I have replaced the multi-function turn signal switch and the problem continues. Any suggestions what is wrong?


With intermittent issues, you have to test when problem is ongoing. These issues can be a pain to track.
There is a hazard switch separate from the multifunction switch. There are separate turn signal and hazard fuses, not only check the fuses, check the fuse circuit for voltage. Use a testlight to check voltage.
Use a wiring diagram, check proper color voltage wires to and from hazard switch, to and from turn switch when problem is ongoing. I can only help you with testing.

Jan 22, 2016 | 2002 Oldsmobile Intrigue

1 Answer

No Low beam head lights and no turn signals or hazard lights. Already changed the multi function switch. What to look for next?


When you had the wiring loose for multifunction switch, if possible, knowing what color wire did what, using wiring diagram, I believe you could have used jumper wire to bypass multifunction switch to see if this or that system would work, if it doesn't, the multifunction switch probably wasn't the problem. On older vehicles it was probably easier to do something like that. Could be issue with wiring in steering column or clock spring, where applicable.Your low beam from dimmer switch goes through drl relay, with relay not energized. At the low beam head lamp, tan wire is voltage, black wire is ground.

Jan 25, 2015 | 1998 GMC Sierra

1 Answer

When i put my 2002 f250 powerstroke in reverse the radio shuts off


There was known concerns with the multifunction switch on the steering column that would blow the fuse fir tail lights, turn signals, and hazard lights.could be feeding back and shutting off radio also.I personally had this problem with the tail light fuse blowing.I use my truck to plow and it sees a lot of shifting, mine is an 05 so wiring diagrams are different, but this could be your problem. Easy diag, remove steering column cover and unplug multi function switch, directional switch, and see if concern stops...

Feb 12, 2014 | 1993 Ford Ranger SuperCab

1 Answer

Repeatedly blows fuse to dash lights and tail lights. I have replaced the multifunction switch and the 20 pin plug to the mfs.


I chose an SE model but all models should be basically the same. If the fuse does not blow with the headlamp switch off, that could mean there is a short somewhere on the BLK/YEL wire. Check pin 9 for a short. The BLK/YEL wire feeds the instrument cluster, the remote keyless entry module, the marker lamps, the park lamp filaments, and the license lamp. Try removing all rear lamps to eliminate them as a source of the short. If you can disconnect the cluster and the remote keyless entry module, check them. If no short is found, turn on the park lamps and reconnect/reinstall items until you find what's wrong.

Sep 21, 2012 | 2003 Dodge Neon

1 Answer

Where is the multi-function switch on a 1987 ford


the multifunction switch is the same thing as the turn signal switch on the steering column, it does more than just operate the turns so hence the name MULTIFUNCTION.

Oct 05, 2009 | 1987 Ford Ranger

2 Answers

My third light is working but brakes lights are not...i was told if switching the flashers on and off could knock possible dust off the circuits that could be making the problem happening


check the turn signal switch. The right and left brake lights go through that switch. you might need to repair it or replace it. does the signal lights work?

Jan 19, 2009 | 1995 Oldsmobile Cutlass Supreme

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