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XJS ( X27 ) 1975 - 1996 3.6 4.0 5.3 6.0

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Old Jun 1, 2021 | 02:56 PM
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sanchez's Avatar
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Default What is this?
1988 Jaguar XJSC H&E Version.
The car has no main relay for the AC/Heat system.
On the passenger side of the center console I see this and I traced the wires and they are tied into a harness tagged Delanair Components.
Any idea what this Control Unit is and what it does?

Control Unit #36900200/ 014248 Located right side of center console

Harness from control unit connected here. Left side of console
 
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Old Jun 1, 2021 | 04:01 PM
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It’s your AC / Heater ECU
 
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Old Jun 1, 2021 | 04:12 PM
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Originally Posted by Vee
It’s your AC / Heater ECU
Yup...
And they are coupe convertible specific...
 
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Old Jun 1, 2021 | 05:22 PM
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One of the plugs was disconnected. Do you have any schematics for the wiring of the ECU or where I can find one?
 
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Old Jun 1, 2021 | 07:24 PM
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Originally Posted by sanchez
One of the plugs was disconnected. Do you have any schematics for the wiring of the ECU or where I can find one?
Attached is a download with the diagrams



Cheers
DD
 
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File Type: pdf
Delanair MKIII Introduction.pdf (1.08 MB, 42 views)
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Old Jun 1, 2021 | 07:28 PM
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Originally Posted by sanchez
One of the plugs was disconnected. Do you have any schematics for the wiring of the ECU or where I can find one?
Some info in here.
 
Attached Files
File Type: pdf
AC Schematics-mk3 Delanair.pdf (285.9 KB, 102 views)
File Type: pdf
Delanair MKIII Introduction.pdf (1.08 MB, 114 views)
File Type: pdf
XJS MkIII Climate Control.pdf (243.5 KB, 71 views)
Last edited by baxtor; Jun 1, 2021 at 07:30 PM.
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