You won :squint:?

 

yeah it was an auction site

 

have you checked all the fuses?

 

Might be dumb but check the dimmer, probably all the way down

 

Ok so I checked ALL of the fuses, and checked the dimmer. Nothing. The door ajar light and the key light both show up but nothing else. I cant get the accessories to light at all.
Does anyone have ANY ideas as to what would cause this?

 

Anyone?

 

Are you talking about the warning lights or the IC background lighting? The IC lighting should be on anytime the key is in run. The climate and radio controls run through the dimmer switch.

You can create a free account at https://www.hyundaitechinfo.com/ that has all the wire diagrams. Works best with IE and allow pop ups.

 

IC?

 

So you're saying it could be the dimmer switch? Ill check it with a voltmeter tonight. If its not that what else would it be? I can have access to the wiring diagrams but there is a LOT of electrical components it could be and I'm not sure where to start...

 

IC = Instrument Cluster.

Always start at the fuses.

 

Oh right duh I knew that. The only lights that come on at all are the key and the ajar light. I already checked the fuses, they're all good : \

 

A lot of the lights are triggered through the Body Control Module and the signal comes over the CAN buss.

 

i would change the memory fuse if i was you, mine seemed fine when i saw it but was still burnt

 

Is there any easy way of checking the body control module?

 

The easy way is to connect it to the Hyundai service diagnostic computer. The BCM using the CAN buss does not send out discrete signals to test.

But I doubt if the BCM itself is bad, There has to be some connections or module missing.

The only way you will figure this out is to study the wire diagrams and learn how Hyundai controls things,

The bottom line is if it is a light it will take 12v to light it up, it will take some time. EDIT: These being LEDs would probably get 5v

Grounding is extremely important too as that is what most of the inputs to the BCM are.

 

well see thats the problem. since the units dont power on, they cant do the diagnostics. What would stop the units from coming on other than a fuse?

 

The problem is the BCM turns the lights on and off. The BCM is a computer module. It sends out signals over the CAN buss to the IC which has it's own CAN module and then uses the signal to turn on the lights. It's not normal electrical wiring. The CAN buss is a communication protocol.

If you look at the Hyundai schematics you see a block called MICOM, this is what is carrying and processing the communication signals.

 

Troubleshooting

Symptom
Possible cause
Remedy

Speedometer does not operate
Cluster fuse (10A) blown
Check for short and replace fuse

Speedometer faulty
Check speedometer

Vehicle speed sensor faulty
Check vehicle speed sensor

Wiring or ground faulty
Repair if necessary

Tachometer does not operate
Cluster fuse (10A) blown
Check for short and replace fuse

Tachometer faulty
Check tachometer

Wiring or ground faulty
Repair if necessary

Fuel gauge does not operate
Cluster fuse (10A) blown
Check for short and replace fuse

Fuel gauge faulty
Check gauge

Fuel sender faulty
Check fuel sender

Wiring or ground faulty
Repair if necessary

Low fuel warning lamp does not light up
Cluster fuse (10A) blown
Check for short and replace fuse

Bulb burned out
Replace bulb

Fuel sender faulty
Check fuel sender

Wiring or ground faulty
Repair if necessary

Water temperature gauge does not operate
Cluster fuse (10A) blown
Check for short and replace fuse

Water temperature gauge faulty
Check gauge

Water temperature sender faulty
Check sender

Wiring or ground faulty
Repair if necessary

Oil pressure warning lamp does not light up
Cluster fuse (10A) blown
Check for short and replace fuse

Bulb burned out
Replace bulb

Oil pressure switch faulty
Check switch

Wiring or ground faulty
Repair if necessary

Parking brake warning lamp does not light up
Cluster fuse (10A) blown
Check for short and replace fuse

Bulb burned out
Replace bulb

Brake fluid level warning switch faulty
Check switch

Parking brake switch faulty
Check switch

Wiring or ground faulty
Repair if necessary

Open door warning lamp and trunk lid warning lamp do not light up
Memory fuse (15A) blown
Check for short and replace fuse

Bulb burned out
Replace bulb

Door switch faulty
Check switch

Wiring or ground faulty
Repair if necessary

Seat belt warning lamp does not light up
Cluster fuse (10A) blown
Check for short and replace fuse

Bulb burned out
Replace bulb

Seat belt switch faulty
Check switch

Wiring or ground faulty
Repair if necessary

Anything else is over the can buss.

 

Ok that helps a bit. Ive heard of CAN bus's but never really understood what they were / how they worked (especially for the car) Any chance you could shed some light on how it works exactly in moderatly simple terms? I understand wiring and signal path's but not really computer circutry

 

It is binary code like a computer. How's your hexadecimal understanding?

 

Hahaha well I dont have it memorized but I understand how it works by sending 1's and 0's in series to convey data, Im more lacking in the area of how and what uses the CAN Bus and how does it use it.

 

So the running lights come on when you turn them on but if you turn it to headlights nothing comes on

The door locks work, the trunk pop, and the gas lever both work

The start button works (lights up and makes the key light come on when you press it on the dash)

All fuses are good everywhere : /

What unit would control/ stop accessories from coming up when you press the start button the second time? Or do they even come up when you don't have the key near?

 

They come on when the ignition is in run.

 

Soooooo they do come on even when the smart key isn't near? what would be the component that would turn the accessories on when you hit the button the second time? The body control module?

 

You will not get the car in run without the key being in the car. There's a master relay somewhere that is turned on when the key is in the car and you push the button twice, or hold it down.