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Old 08-23-2012, 08:07 PM   #1
devlmaycry
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Member#: 309878
Join Date: Feb 2012
Chapter/Region: South East
Location: Rome, GA
Vehicle:
2002 WRX
PSM

Default 02 WRX Cruise Control Issue

I have a 02 wrx that I just purchased that the cruise control doesn't seem to work on. The previous owner swapped out the steering wheel to the all black STI one with the cruise control switch like the one listed in the link I followed to get it all working:
http://forums.nasioc.com/forums/show....php?t=1706769

That being said it still doesn't work. All of the fuses are good, the light comes on on the switch when I press the on/off switch on the wheel controls, but none of the cruise settings seem to work. I metered out that the wheel switch is getting power and when used to set, coast, excel, etc is going from 0v to 12v. I also made sure it was making out of the clock spring.

The clutch pedal switch is working properly as far as I can tell. It completes the circuit when the pedal is pushed.

Though I'm kind of at a loss, even with looking at the wiring diagram, as to what I should check next. The only other things I can see to check are the module and the cruise under the hood.

Has anyone else had this issue and figured it out without just part swapping?
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Old 08-24-2012, 02:50 AM   #2
Cougar4
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Join Date: Jan 2004
Location: Anchorage, AK
Vehicle:
2001 LL Bean Outback
Winestone

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Make sure the switchs for the CC on the brake pedal and clutch pedal are adjusted correctly. If one isn't then it will disengage the CC.
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Old 08-24-2012, 04:28 AM   #3
devlmaycry
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Member#: 309878
Join Date: Feb 2012
Chapter/Region: South East
Location: Rome, GA
Vehicle:
2002 WRX
PSM

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Yeah I crawled under there and checked both they seem to be adjusted right. I printed off the 3 pages of CC stuff and have several things highlighted to meter out when I get a chance. Hopefully its something easy to fix
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Old 08-24-2012, 01:04 PM   #4
Cougar4
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Join Date: Jan 2004
Location: Anchorage, AK
Vehicle:
2001 LL Bean Outback
Winestone

Default

You can't just look at the switches and be sure they are working correctly. You need to check the voltage across them. I think the switch closes and makes a ground connection when the pedal is depressed, so the voltage across the switch would be zero volts if that is the case.
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Old 08-24-2012, 04:01 PM   #5
devlmaycry
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Member#: 309878
Join Date: Feb 2012
Chapter/Region: South East
Location: Rome, GA
Vehicle:
2002 WRX
PSM

Default

Yeah I metered across the clutch switch and it has continuity when the pedal is pressed. I haven't had a chance to check the brake pedal yet, but I'm hoping to do it after work tomorrow. Then start checking all of the items I highlighted on the 3 pages of CC stuff from the FSM. Hopefully it will be something as simple as the brake switch being bad.

On a side note I did manage to fix my dash clock by resoldering the SMD that always comes loose, and mount my knockoff CS brake duct fog light covers. So at least somethings are going right.
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Old 08-24-2012, 10:37 PM   #6
Cougar4
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Good deal. Another clock fix for the books.
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Old 08-25-2012, 06:04 PM   #7
devlmaycry
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Member#: 309878
Join Date: Feb 2012
Chapter/Region: South East
Location: Rome, GA
Vehicle:
2002 WRX
PSM

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Well.... after spending a few hours metering everything out I reconnected a ground that had nothing to do with the cruise and also discovered that the nylon bushing was missing out of the clutch pedal. So it looked like, in the poor lighting that the switch was engaging, but it was passing through the empty hole.

Works great now!
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Old 08-25-2012, 10:35 PM   #8
Cougar4
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2001 LL Bean Outback
Winestone

Default

Good deal. Thanks for the update and glad you got it working again.
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