Birty Dastards Jeep Club

Tech Forum => Workshop => Topic started by: jay140285 on October 13, 2015, 04:29:06 PM

Title: Jeep XJ 1999 gear change issues
Post by: jay140285 on October 13, 2015, 04:29:06 PM

I've got an XJ in at the moment, fault code P1698 transmission control module not communicating with PCM

I've replaced the TCM but still not difference,

In auto it only has 4th gear, manual selector of 2nd and 3rd work perfectly.

Any ideas


www.jrservicingandtransport.co.uk

Title: Re: Jeep XJ 1999 gear change issues
Post by: jay140285 on October 13, 2015, 06:12:18 PM

What shift solenoids are in an XJ 4.0


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Title: Re: Jeep XJ 1999 gear change issues
Post by: Mike Pavelin on October 13, 2015, 08:19:27 PM

Check the fuses under the bonnet.

Title: Re: Jeep XJ 1999 gear change issues
Post by: Brynjaminjones on October 13, 2015, 08:54:35 PM

I can't remember the exact number, but that's a very similar fault description to the one my XJ had when the massive square connector with a bolt through it, located to the right above the driver's footwell, was loose. I couldn't get the Jeep started at the time though, so can't tell you if it would have had the same problems.

Title: Re: Jeep XJ 1999 gear change issues
Post by: jay140285 on October 13, 2015, 09:00:33 PM

Quote from: Mike on October 13, 2015, 08:19:27 PM

Check the fuses under the bonnet.

Did that first Mike


www.jrservicingandtransport.co.uk

Title: Re: Jeep XJ 1999 gear change issues
Post by: jay140285 on October 13, 2015, 09:01:59 PM

Quote from: Brynjaminjones on October 13, 2015, 08:54:35 PM

I can't remember the exact number, but that's a very similar fault description to the one my XJ had when the massive square connector with a bolt through it, located to the right above the driver's footwell, was loose. I couldn't get the Jeep started at the time though, so can't tell you if it would have had the same problems.

I'll take a look.

If it was a shift solenoid would it still pay up through manual changes?

As manual changes are perfect


www.jrservicingandtransport.co.uk

Title: Re: Jeep XJ 1999 gear change issues
Post by: donk498 on October 13, 2015, 09:27:49 PM

Andy had a problem with one that he had. Manual shifts fine, doesn't work in auto. It was a solonoid.

Title: Re: Jeep XJ 1999 gear change issues
Post by: jay140285 on October 13, 2015, 09:41:05 PM

Do you know which one as I think there are 3


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Title: Re: Jeep XJ 1999 gear change issues
Post by: JamesH on October 13, 2015, 09:52:47 PM

If you search for the manual shifter mod on NAXJA and other forums you should come across complete breakdowns and photos of it all. The manual shifter acts as a switch between solenoids I think.

Title: Re: Jeep XJ 1999 gear change issues
Post by: jay140285 on October 14, 2015, 10:51:08 PM

Thanks all, found lots of info just got to find someone in UK that sells the solenoids now!


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