HI! May be it was already here, Jaguar XJ 6 1997, 3.2, not starting, turning key, lights on the dash coming on, but nothing happened after, engine not starting, even not trying to start, what can it be?

 

Is your battery charged. A partially discharged battery may be enough to turn the lights on in the cabin, but not the starter.

The starter could be toast as well.

 

thanks for replay, its new battery on it, will check starter

 

Try the inertia switch.

 

can you tell location of it?

 

https://www.jaguarforums.com/forum/x...-switch-98502/

Although it's unlikely the switch. The inertia switch kills the fuel pump, so the car will try to start, but it won't turn over.

Do you have an alarm/immobilizer on the car. That could also prevent the car from even attempting to start. Not sure if your MY requires a chipped key.

 

There is a large starter solenoid relay that must click closed by placing your finger on it as other relays in the area click as well

This is your starting point for troubleshooting

 

Thats a problem, its not trying to start...

 

is it on the starter itself?

 

is it on the starter itself?

 

Starter relay posted by Parker here

 

thanks a lot, will try

 

Do not tighten the positive battery cable on the battery too tight

Fuse # 12 / 10 amp right engine bay fuse box , The # 1 fuse is on the same row and closest to the fuse box battery cable terminal post

This fuse relies on the right engine bay fuse box relay to close ( referred to as one of two ignition positive relay ) and can be swapped with the left engine bay fuse box relay ( which in reality only runs your horn )

Fuse # 3 / 25 amp left engine bay fuse box , this fuse is hot at all times

The specific starter circuit does go through the inertia switch ( reference point 7 stop sign double hash page 38 of the 1997 wiring guide ) as well as other circuits and the switch is fickle from reading and can be jumpered with a paper clip at the switch connector between the only 2 white wires

Starter solenoid relay large left # 4 allows power from the battery coble to flow through the starter motor after it extends the starter into the engine flywheel

The solenoid itself is attached to the starter in a way it won't come off without removing the starter so we hold off on that

By feeling for the relay to click closed or not splits your problem in half

You have inhibits like the gear shift lever position switch ( referred to as linier switch ) and the key chip in your key as it should have a lump in it , and a couple of other inhibits

You have a ZF4HP22 transmission which is different then the usual ZF4HP24 on the transmission itself position inhibit , it does not have a rotary switch attached to the transmission body like the ZF4HP24

But the relay clicking every time wanted is the starting point

If it does not click swap the relay with a headlight , fog , or A / C clutch relay , The base unhooks and you can flip the base over to spray some penetrating oil to free them up

 

Jaguar seem to be under the impression that the inertia switch kills all ignition controlled circuits, including the fuel pump, going by the owners handbook.

 

many thanks for your comment, found few spare relays, hopefully it will help

 

changed relay number 4 on the diagram, no luck, still all lights on dash comes up as normal, rad fan starting, but car still not trying to start.. any more ideas?

 

Inertia switch

 

i saw before that its located on the rhf side under steering wheel, but cant find anything like this over there

 

Does the starter solenoid relay click by placing your finger on it ?

Swapped right engine bay fuse box relay ?

The inertia switch is always on the right side by the ight foot regardless if left hand or right hand steering

 

For location, see here
https://www.jaguarforums.com/forum/x...-switch-98502/