02’ Jeep Engine light on after RS install
Printed From: the12volt.com
Forum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=9571
Printed Date: August 02, 2025 at 6:10 PM
Topic: 02’ Jeep Engine light on after RS install
Posted By: flashbang
Subject: 02’ Jeep Engine light on after RS install
Date Posted: February 15, 2003 at 6:31 PM
Hi,
After my attempt of installing a Commando Pro-Start 2300 on my '02 Jepp grand cherokee the engine light is on and it is running on 5 cylinders only and won't go over 50MPH.
What I did is unhook all wires I had connected for the RS and JDL-PK data buss interface and is still is not runnig right and the light is still on.
My previous thread has the links to the RS and JDL-PK
link
Any Ideas of what happened?
BTW the JDL-PK never confirmed operation after repeated attempts.
Step #1 number 6 didn't do what the manual said it should.
Replies:
Posted By: securinu
Date Posted: February 15, 2003 at 6:38 PM
did you go to a injector for tach connection if so did you cut it possibly that connection is not good.
Posted By: flashbang
Date Posted: February 15, 2003 at 6:44 PM
Yes I did, but it is good.
Posted By: securinu
Date Posted: February 15, 2003 at 7:28 PM
if you go to autozone they have a code scanner that you can use that will tell you what is the problem.
Posted By: flashbang
Date Posted: February 18, 2003 at 6:29 AM
Ok, went to Autozone and code P0201 "malfuction on fuel injector circuit 1". All wires are ok. Autozone will not clear code so I bought a OBD11 scan toll and cleared it, but it keeps comming back.
The Jeep is at the Chrysler dealer now during the worst snow blizzard NY has seen in 7 years.
I think the commando unit jammed up the injector circuit when I connected the grey tach sense wire to injector #1 uncommon wire.
The reason I connected the tach wire in the first place is because the Jeep would only remote crank for about 1 second.
I will see today what went wrong when Jeep calls me.
Posted By: flashbang
Date Posted: February 18, 2003 at 10:01 AM
Jeep called.
The PCM (Powertrain Control Module)is burnt up.
They will replace it tommarow. I have a friend that had a '00 Caravan that had his PCM go twice on him in a year, so maybe the remote start is a unrelated issue.
Posted By: fire200799
Date Posted: February 18, 2003 at 6:48 PM
4.7L has seperate coil for each cylender use the wire that IS NOT DARK GREEN & ORANGE.
4.0L you can use any tan stripe wire at the coil pack or you can use the wire on the fuel injecter that IS NOT DARK GREEN & ORANGE. wich it looks like you did, not that it will probabily matter much but you can try to go to the coil pack.
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Thanks Eric
Posted By: flashbang
Date Posted: February 19, 2003 at 5:28 AM
No,
I was on the uncommon wire on injector #1. The common wires were green.
Maybe the coil pack would have been a better choice, but I don't think the PCM's failure is a result of anything I did.
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