XJ6 will not start, when last taken to the shop I was told that I need Security Control Mod which is used to lock/unlock doors trunk etc. Since I have to unlock pass/rear doors manually I was think that the bad control mod might be the issue. However when I connect a code reader and run the system,there are no codes that come up but I clear whatever is there and the vehicle starts and runs well. I let the vehicle sit for a day and it won't start again. But as soon as I connect the code reader, clear what isn't there, the vehicle starts. I'm lost

 

Welcome to the forums Leon1,

I've moved your question from General Tech Help to X300 forum. This is the place to post technical questions about your model.

Please follow this link New Member Area - Intro a MUST - Jaguar Forums - Jaguar Enthusiasts Forum to the New Member Area - Intro a MUST forum and post some information about yourself and your vehicle for all members to see. In return you'll get a proper welcome and some useful advice about posting to the forum.

Graham

 

Your USA model does not have a chip in the key

Do you have starter rotation?

The fuel pump will only come on for 3 seconds with the rotation of the key before the start position

The starting system can be split in 2 halves to trouble shoot

A control half and a power half

The splitting point is by placing your finger on the starter solenoid relay and feel for it to click closed

You would have to place your finger on it as there are other relays in the area that will click at the same time

You have relay swapping options of the same part # like the A/ C clutch relay , headlights ; fog

Jaguar part # LNA6706AA

Genuine Relays For Jaguar Xj 1995 - 1997 (from 720125 To 812255) Classic | Jaguar Land Rover Classic Parts



The relays can be stuck from removing from the sockets because of a sealing O - ring and penetrating spray helps

 

There is a fuse that is the control for the fuel pump relay that is also the power to the OBD 2 port

Someone found a pin bent in the OBD 2 port

 

Mind sharing where that diagram came from?

 

jagrepair.com/images/AutoRepairPhotos/jagxj1996.pdf

The one in the pic is on page 43

the V12 and supercharged and 3.2 liter version is a different page as there are some differences

this has to do with the transmission installed

Which diagram?

Your XJS will be even different

jagrepair.com/images/AutoRepairPhotos/jvs1995en.pdf