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Old 03-01-2012, 04:38 PM   #1
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help diagnosing non op cruise control on '98 TJ

I recently bought this '98 TJ I6 manual transmission. The previous owner claimed everything worked.... and nothing needed repair
Close if you don't count the worn out tires and cracked weld at the collector on the exhaust manifold... Any way the price was fair ...

I did find that the cruise control does not work. I did not get an owners manual, so I am hoping someone can tell me where to find the fuse(s) for the cruise.
Is there one fuse box or more? If so, which fuses should I check?

I should add that no light comes on on the dash when the column switch is turned on.
If it was a vacuum issue, that should not affect the light.
What else shares the fuse with cruise control? everything else including the horn functions.

Any others that have had this issue and can start me along the correct path?

thanks
Rich

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Old 03-01-2012, 05:13 PM   #2
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I don't see a direct fuse for the CC. It looks like it is powered & controlled in the PCM (main computer). There are 2 fuse panels. One in the box in front of the battery, the other behind the glove box. The most common reason the CC quits is the vacuum hose comes off at the intake manifold.

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Old 03-01-2012, 05:34 PM   #3
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Are your brake lights working? And your hazards. I just replaced a brake light switch down on the brake pedal and read that there is a connection to that switch needing replaced and cruise control issues.

The switches are about $11 if you need to swap it out.
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Old 03-01-2012, 05:35 PM   #4
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Thanks guys...
I will check out both leads...
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Old 03-02-2012, 09:07 AM   #5
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The clutch safety switch is also implicated via the PCM, as well as the battery temperature sensor. I would start with the fuses though.
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