Won't start
#61
#62
Your picture is too small for me to read. But it looks like I found this one at the right front component panel. I screwed up and switched the purple relay for the metal one and a small (I guess) resistor started smoking. The white label on one wire says "Jaguar cars P.I. relay by fuse Rists 8 N/A" and the other yellow label says "LMB3998AA issue 1 51247400A Lucas rists Elect. test 93 N/A. I'm not sure if it was a resistor or not, but I took a picture of the one next to it that has nothing plugged into it and it looks like it has the same thing attached to it. Hopefully, I can use that one to replaced the one that got smoked.
#65
93xjs6cyl,
You mentioned that "found this one at the right front component panel." Is this relay with the red base on it's own, or is it with other relays? I believe that a 93 EMS relay is mounted on the A-post (on the inner footwell panel) on its own. It's probably close to the ecu I might be wrong but that's what the documentation seems to imply. It doesn't show that it's part of the component panel in front of the knee bolster.
Paul
You mentioned that "found this one at the right front component panel." Is this relay with the red base on it's own, or is it with other relays? I believe that a 93 EMS relay is mounted on the A-post (on the inner footwell panel) on its own. It's probably close to the ecu I might be wrong but that's what the documentation seems to imply. It doesn't show that it's part of the component panel in front of the knee bolster.
Paul
#66
Yes, this one was right next to the ECM. It was alone, but as I said, the label by it says I.P. main relay. So, I never did find silver/ red stripe relay on a red connector. I looked throughout the car. I take it the part that smoked was an English resistor? Part # W21 4R7. I have a ton of resistors, so if someone can tell me what watt (maybe 2 watt) and what 4R7 stands for (may the resistance) then I can replace it right away.
#67
#68
#69
That's the transmission control relay. It doesn't have any impact on the fuel pump running. Don't worry about it.
This is a simple diagnostic process. Test the terminals on the EMS relay to determine if current is being passed to the ecu. If that's fine, you then test the fuel pump relay to verify that it's being energised by the ecu output signal. That's how we'll start to verify why the fuel pump isn't running.
Paul
This is a simple diagnostic process. Test the terminals on the EMS relay to determine if current is being passed to the ecu. If that's fine, you then test the fuel pump relay to verify that it's being energised by the ecu output signal. That's how we'll start to verify why the fuel pump isn't running.
Paul
The following 2 users liked this post by ptjs1:
Greg in France (11-29-2022),
orangeblossom (11-29-2022)
#71
93xjs6cyl,
As mentioned above - "I believe that a 93 EMS relay is mounted on the A-post (on the inner footwell panel) on its own. It's probably close to the ecu I might be wrong but that's what the documentation seems to imply."
As you know the colour of all the wires, and can see from the wiring diagram that terminal 87 then provides the input signal to the ECU, you could follow back the appropriate wire from the ecu to verify .
I've also enlarged the diags above to assist in showing its location.
Cheers
Paul
As mentioned above - "I believe that a 93 EMS relay is mounted on the A-post (on the inner footwell panel) on its own. It's probably close to the ecu I might be wrong but that's what the documentation seems to imply."
As you know the colour of all the wires, and can see from the wiring diagram that terminal 87 then provides the input signal to the ECU, you could follow back the appropriate wire from the ecu to verify .
I've also enlarged the diags above to assist in showing its location.
Cheers
Paul
#72
#74
If you show a clear photo of how this red-base relay is mounted (the documentation says its on its own on the A-post) then we're home and dry. And have you done as suggested and confirmed that terminal 87 wire goes to the input port on the ecu?
Paul
#75
#76
Hi 93xjs6cyl
Could this be the EMS Relay you are looking for?
This could be the one that Paul (ptjs) was telling you about (or maybe not)
There is a Fuse Box above the Knee Panel and it could be Fuse Number 7 (or maybe not)
Sorry about the 'Guesswork' but I don't have a Manual but I think this EMS Relay in the Foot well controls the Fuel Pump Relay under the Fender in the Boot-Trunk
Paul (ptjs) will know
Could this be the EMS Relay you are looking for?
This could be the one that Paul (ptjs) was telling you about (or maybe not)
There is a Fuse Box above the Knee Panel and it could be Fuse Number 7 (or maybe not)
Sorry about the 'Guesswork' but I don't have a Manual but I think this EMS Relay in the Foot well controls the Fuel Pump Relay under the Fender in the Boot-Trunk
Paul (ptjs) will know
#77
93xjs6cyl,
"IP Main Relay"
"PI Relay"
"EMS Relay"
"Fuel Injection Main Relay"
I think they all relate to the same thing. I know I'm sounding like a stuck record but again:
- Is it mounted on its own on the A-post?
- Does the wire from terminal 87 go to the appropriate signal input terminal on the ecu as detailed on teh wiring diagram?
- Can you post a pic clearly showing its location?
Paul
"IP Main Relay"
"PI Relay"
"EMS Relay"
"Fuel Injection Main Relay"
I think they all relate to the same thing. I know I'm sounding like a stuck record but again:
- Is it mounted on its own on the A-post?
- Does the wire from terminal 87 go to the appropriate signal input terminal on the ecu as detailed on teh wiring diagram?
- Can you post a pic clearly showing its location?
Paul
The following users liked this post:
orangeblossom (11-30-2022)
#78
Hi Paul (ptjs) + 93xjs6cyl
I've just come across a Thread from carsnplanes who seems to have had exactly the same problem
Although it seems he managed to find the 'Elusive EMS' Relay so maybe we've been looking in the wrong place? (or maybe not?)
As apparently on a USA Car its either in or under the Fuse Box Passenger Kick Knee Panel
EMS Relay Location on a USA CAR
What do you think Paul (ptjs)
I've just come across a Thread from carsnplanes who seems to have had exactly the same problem
Although it seems he managed to find the 'Elusive EMS' Relay so maybe we've been looking in the wrong place? (or maybe not?)
As apparently on a USA Car its either in or under the Fuse Box Passenger Kick Knee Panel
EMS Relay Location on a USA CAR
What do you think Paul (ptjs)
The following users liked this post:
Greg in France (11-30-2022)
#79
The following users liked this post:
orangeblossom (11-30-2022)
#80