Sir, I am new to this forum . My 1996 XJ6 4.0 Base model, compressor will not
start to recharge system.Compressor switch has four wires. Please advise how to jump start compreesor. I.E Which wires to jump.
thank you for the advise
Hershey Shah
Midland, Tx.
Wires are black, black, white and blue

 

Welcome to the forum Hershey,

I've moved your question from General Tech Help to X300 forum. Members here with the same model will be able to help.

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 info 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

 

Dear Graham,
Thank you for the welcome letter. I have 3 Jaguars, two XJ6 4.0 L base models and one XJ8. I have posted one inquiry about my XJ6 A.C. Problem. I think the problem is clutch
as compressor is not coming on.
I very much appreciate input of other members.
Sincerely, Hershey

 

The 'TRINARY' switch will operate correctly if the system has some pressure from a partial charge (most of a 12 oz. can) so that the compressor can be used to pull the rest of the refrigerant into the system.

There are several reasons why a compressor clutch will not engage.

You can 'jumper' the compressor relay (30/87) to engage the clutch and bypass all the 'safeguards' if the circuit has 'power'. (ie. the fuse is good)

Please note that 'wiring around' switches and relays can damage your system if there is a fault and that is the reason the clutch won't engage.

Diagnosis is preferred over throwing parts at a car.

Electrical guides are available from this site and elsewhere on the internet.

bob gauff

 

If you haven't run the AC diagnostics already - press the Auto and Recirc buttons, turn on the key, and read the codes on the AC display.

https://www.jaguarforums.com/forum/x...72/#post343031

Then..

https://www.jaguarforums.com/forum/a...imate-diag-pdf

 

That is awesome information. The only other car I've come across that will do that is my 95 Buick Roadmaster which will also show engine codes on the HVAC display. More cars should do this.

.

 

My 99 Deville did the same, but on odometer.