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Discussion Starter #1
I am now one my 9th XJ. Currently I have a 2000 and just bought a 1998.
My 1998 is having the dreaded p1694 code with crank no start condition. No fuel pressure, no spark. I checked the 3 main grounds and cleaned for good measure. No lick. I disconnected the CPS to see if my gauges return, they did not. I got a new one anyway and replaced it. No luck. I swaped the new one to the 2000 and it runs fine. The 1998 remains in no start condition. I swaped the TCMs... no luck. I also checked the 5v sensors on the manifold. Can anyone think of something I might be missing before I send the PCM for repair or try my "test" PCM to TCM harness?
 

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Have you changed the cam sensor in the dizzy? in my 96 it took out my gauges and my OBD port. Unplugged, my gauges came back and I could read codes. Plugged in neither work. It's an easy test, just unplug it and see if the gauges work.
 

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How about the ASD relay. A non functioning relay could give all those symptoms
 

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Discussion Starter #5
Ah yes. I forgot to mention that I also swapped the relay with several other including the starter relay. No luck there.
Good catch and thank you for the idea.
 

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OK, now you need to verify current to the 85&86 pins as well as current to the #30 pin
 

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Discussion Starter #7
I had to charge the battery. I unpluged the Cam Pos sensor, no gauges. Pluged back in, no start.
I checked the CPS and came up with this...
.54 with the key in on position and .26 with key out. Am I reading this wrong?
228340
228341
228342
228343
 

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Discussion Starter #9
I also check pin 3 in the TCM bus with terminal 86 for continuity and was able to confirm connection.
 

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Discussion Starter #10
Well... I contacted my XJ club and will be getting a known good PCM for the 1998. I'll keep you posted on the results.
 

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Discussion Starter #11
After re reviewing my information I realize that my issue is the 5v reference circuit not necessarily the PCM. I will trace both 5v circuits from PCM and double check harnesses for shorts.
 

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Glad you did this instead of just throwing parts at it. Let us know what your 5V circuits are like
 

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Discussion Starter #14
All I did was pull back the sheathing and found some bare wires...
I found a harness in great condition from a 1997. I hope its the same.
 

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Holy linoleum Batman. It never ceases to amaze me the crap some people do.
97 to 98, you stand a good chance of them matching. I Think 99 was the changeover year.
 

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When it all goes to hell, start stripping. Seems to work in most life situations. :ROFLMAO: :LOL:
 

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Discussion Starter #17
No start condition remains.
Well... the harness was not the same. The connection to the coil is different.
I made to call to cut and replace the wires upto the transmission dip stick, swapping the connector for the original after I cleaned it up and pinned new wires.
Interesting thing is that I am showing a ground in the Throttle PS and another sensor with PCM cables A and B (Black and White) disconnected. When C is disconnected they lose ground.
228355
228356

Im still reading .17 volts in the off position and .43 in the ignition on position. Im sure there is a short. My gut tells me to open the harness from connectors A and B and follow them to the sensors to have full visibility on the condition of the wires.
 

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Discussion Starter #19
And my puncture probes came in. So I will be able to test to make sure the PCM is sending 5v through each od the black and white (A,B) connectors as well as limit the about of stripping I have to do!
 
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