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Matt
Matt, Engineer
Category: Jaguar
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Experience:  Mechanical Engineer with 20 years experience in the auto industry, 8 yrs in formula 1 engine testing
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Jaguar x type 2.0 ignition power lost. It's consistent. When

Customer Question

Jaguar x type 2.0 ignition power lost.
JA: Is the power loss consistent, or does it fluctuate?
Customer: It's consistent. When the dip relay R11 number 1 pin is powered, then the car starts.
JA: What year is your F-Type?
Customer: It's X-type and it's 2005
JA: Are you fixing your F-Type yourself? What have you tried so far?
Customer: There was a main beam problem and I tried to find out the reason. Accidentally, I sent power to dip beam relay pin 2. The car turned of and didn't start anymore.
JA: Anything else you want the mechanic to know before I connect you?
Customer: Yes
Submitted: 7 months ago.
Category: Jaguar
Expert:  Chad Farhat replied 7 months ago.

Hi, I'm Chad. Welcome to JustAnswer. I'm reviewing your question and I will be posting your reply ASAP.

Expert:  Chad Farhat replied 7 months ago.

Hey how are you

ok give some time to look up circuit u have a X type 2.5 or 3.0 liter?

have you checked all fuses with a test light already

Please let me know the model type so i look up the circuit

Thank You

Chad Farhat

ASE Certified Technician

Customer: replied 7 months ago.
Hi Chad. I try to explain with my not perfect English... Yes I meant X-type 2.0D 2005.
I have replaced the power distribution fuse box and all the fuses and relays for that fuse box.
It seems that the ignition switch is not powered from the power supply 3, I think.
Expert:  Chad Farhat replied 7 months ago.

ok 2.0 liter, i got you no problem :)

Customer: replied 7 months ago.
I have checked all the fuses.
Expert:  Chad Farhat replied 7 months ago.

in the u.s we have 2.5 ,no issue let look up circuit first be right back

Chad

Expert:  Chad Farhat replied 7 months ago.

this is our starting wiring circuit diagram and our ignition switch top left

click on blue link to view diagram

let me know if you can see it?

you should be able to zoom in on it

Thank You

Chad Farhat

ASE Certified Technician

Expert:  Chad Farhat replied 7 months ago.

this is a link to my dropbox in case you can not see it

https://www.dropbox.com/s/rltf6b72cq513yo/1.gif?dl=0

Customer: replied 7 months ago.
The first picture is unclear but I have found the same picture from the wiring manual
Expert:  Chad Farhat replied 7 months ago.

there is a black wire from switch to gem module with switch at start position what do you have there

on the starter relay with switch on start do you have power ?

Expert:  Chad Farhat replied 7 months ago.

you can test from switch side on black wire

Customer: replied 7 months ago.
The start relay is "non-serviceable pcb relays"
I'm not sure if the starter relay has power but F22 60A main fuse is without power.
Customer: replied 7 months ago.
I didn't totally understand what you meant with the black wire.
Do you mean IP6 pin 1? Is that black wire ground or powered?
Customer: replied 7 months ago.
I'll check the black wire now. I'll be back soon.
Expert:  Chad Farhat replied 7 months ago.

NO IT IS POWER FROM SWITCH

LOOK AT CIRCUIT YOU CAN SEE ONE WIRE LABELED B GOES TO GEM MODULE

OK LET ME KNOW

Customer: replied 7 months ago.
Ok,
IP6/1B has no power. Same measured in the keyin switch. All the four wires are without power when I have the key in and ignition power on.
Customer: replied 7 months ago.
I'll measure again. I noticed that IP6 has two B:s. IP6/8 is keyin signal
Expert:  Chad Farhat replied 7 months ago.

on the red wire coming to THE switch it goes thru a 15 amp fuse at passenger side and 150 amp fuse back to power distribution box under hood BACK TO BATTERY ,SO IF NO POWER ON NONE WE NEED TO CHECK RED WIRE AND FOLLOW IT

I BET YOU THAT 150 AMP BLEW WHEN YOU POWER UP BEAM WIRE CONNECTION

DID YOU CHECK IT

CLICK ON LINK TO VIEW DIAGRAM & WHAT I M TALKING ABOUT LOOK AT CIRCUIT FIRST THEN GO TO CAR

Please let me know

Thank You

Chad Farhat

ASE Certified Technician

Customer: replied 7 months ago.
I measured again and got 2.2V (IP6/8B) keyin switch wire.
Expert:  Chad Farhat replied 7 months ago.

2.2 v coming into switch not enough ,we need battery voltage 12 volts you need to see 12 volt there

follow red wire back to the 150 amp fuse in the power distribution box

we need 12 vokt on that wire,

look under the fuse box in the engine compartment where the red wire goes

we also have the 15 amp fuse , i sent you location

Expert:  Chad Farhat replied 7 months ago.

this is thedip relay in the circuit

please review

Customer: replied 7 months ago.
Hello,
I got 12 volt in the 150 amp on both sides. 12 volt goes from the red wire 80 amp fuse
Customer: replied 7 months ago.
We'll see the pictures, just a moment.
-Kristian
Expert:  Chad Farhat replied 7 months ago.

ok

Customer: replied 7 months ago.
Hello,
Kristian's wife writing. He just went to check fuse 31 to the garage
-Katariina
Expert:  Chad Farhat replied 7 months ago.

hi how are you Katriina

ok no problem i m here

how are you

Chad

Customer: replied 7 months ago.
Driver's side, fuse box in the car: F31 has got power but it is 30amp and not as in the list you sent me (passenger compartment fuses).
Passenger's side has no fuses.
We were wondering if it's because we have the steering wheel on the left side and the passenger is on the right side.
Expert:  Chad Farhat replied 7 months ago.

it is okay u.s version might differ from European r ember yours is 2.0 we have 2.5 and 3.0 here

Customer: replied 7 months ago.
I'm fine and getting to know car electronics when writing.
Ok. We'll check now the last picture you sent.
-Katariina
Expert:  Chad Farhat replied 7 months ago.

yes i believe so

I have u.s systems ,but basically the same on electrical

why don t we have power on red wire coming from the 150 amp ,work yourself from 150 amp on red wire back to switch where are you losing the 12 volts

where that relay r11 dip relay , pull box out ,when you powered up the headlight ,you burned something but obviously not the fuses like we were hoping so it is a wire or the fuse box module or that GEM module

Customer: replied 7 months ago.
The fuse box module in the engine compartment has been changed. So obviously the problem is in the GEM? But we don't understand why only 2.2 volt is coming to the black wire (GEM) when it is not switched to the GEM.You wrote:
why don t we have power on red wire coming from the 150 amp ,work yourself from 150 amp on red wire back to switch where are you losing the 12 volts ---WHERE SHOULD THE RED WIRE GO FROM THE 150?dip relay 1pin powered and the car works. Why?
-Katariina
Customer: replied 7 months ago.
fig 01.5 ign. switch power distr.
i don t understand why battery power supply 3 is 0 volt
Expert:  Chad Farhat replied 7 months ago.

based on the diagram i see it goes from 150 power box to 15 amp passenger side box, might be other side in finland back to ignition switch

I believe you blew the GEM module ,

but that dip relay is also connected to that gem module look closely to diagram the 2.2 volt tells me the gem module shorted out

if you unplug gem module do you read 12 volts back on red wire or still 2.2 volts lets try that

I wish i was next to it i can confirm it

Customer: replied 7 months ago.
Should the 12 volt come to the GEM or to the wire that comes to GEM? Because I had the black wire disconnected from the GEM, when I measured 2.2 volt (black wire).
Customer: replied 7 months ago.
Does this red wire (you are talking about) come to the GEM module? Because I have measured 12 volt on the red wire that is in the engine compartment next to the 150 amp and it goes forward with a 80 amp main fuse.
Customer: replied 7 months ago.
There are four main fuses (150, 80... amp) under the fuse box in the engine compartment
Expert:  Chad Farhat replied 7 months ago.

should come from switch to gem

Customer: replied 7 months ago.
Do you mean keyin switch?
Customer: replied 7 months ago.
The same where the black wire comes from?
Expert:  Chad Farhat replied 7 months ago.

i want you to follow the wire to the switch do you read 12 volts entering the switch and we should see 12 volts on black wire going to gem from the switch,switch is our power source when switch to on or start postion

Customer: replied 7 months ago.
Shall the IP6 be unplugged/disconnected from the GEM during the measuring?
-Katariina
Expert:  Chad Farhat replied 7 months ago.

no i want everything hooked up first you do reading

then unplug and read again

red wire going in switch ,black wire leaving switch to gem

switch on or start , if you drop from 12 to 2.2 when gem hooked up ,gem bad

Customer: replied 7 months ago.
Ok, let's see.
Expert:  Chad Farhat replied 7 months ago.

ok

Customer: replied 7 months ago.
After new measurements the situation is that there is practically no power coming to the black wire on the GEM.
We have the ignition switch open and we see the key-in switch. And when I put the volt meter in ground and measure all the four wires on the key-in switch, there is no power in them. I'll go and measure all the coming wires that come to the ignition switch. I'll be back.
-Kristian
Customer: replied 7 months ago.
No power on the black wire.
Key-in signal comes to the ignition switch, doesn't it? But there does not come any power to the ignition switch now. Power supply 3 should power the ignition switch but is there some relay that prevents this to happen?
Is it possible that there is some kind of FAIL SHUT in the ECU that prevents the power up? I was just wondering if the GEM has something that prevents the power coming to power supply 3
Expert:  Chad Farhat replied 7 months ago.

have you tried disconnecting battery 15 minutes since this happened to reset everyting

the antitheft will prevent it

do this

Master reset Procedure

1- Disconect Battery Cables ( Negative & Positive Cables )you can use any electrical wire as an extension if battery cables don't reach .

2- Hold cables Together for 60 secs ,then let go

3- Wait 15 minutes

4- Make sure all doors are closed

5- Reconnect battery Cables

6- Lock & unlock the vehicles using the key from driver door side (if you have a key fob with no blade key, just lock & unlock using the key fob buttons)

7- Enter the vehicle and attempt to start

Please let me know

Thank You

Chad Farhat

ASE Certified Technician

Customer: replied 7 months ago.
done didn't help.
Expert:  Chad Farhat replied 7 months ago.

not sure on this one i went back and look sat the circuit

i don t see anything in between

when you jump r11 does it stay running .

if the switch not sending 12 volts ,then switch is bad .

Customer: replied 7 months ago.
it is running. But to the switch is not coming any power that the switch could send forward to the gem.
If I put that relay r11 pin 1 12 volt, car works. If you watch fig.01.5 #13circle. system powered backwards. I mean that the power kind of comes from the number 13 in the circle, and not from number 3 that is in the left side on the figure 01.5
Customer: replied 7 months ago.
With the first sentence "Yes it's running" I meant that when I jump r11 the car stays running. Just wanted to make it clear to avoid misunderstanding
Expert:  Chad Farhat replied 7 months ago.

at this point I m not sure , i did my best for you on this

I will opt out of your question for other expert to assist you on it

good luck with it ,I tried :)

Customer: replied 7 months ago.
Thank you Chad for your help. At least I know more where to look after the problem and its solution. Have a nice day/evening/night.
-Kristian from Finland

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