which one is it
03-27-2012, 01:13 AM
#1
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which one is it
I have one of two problems(no wise cracks please) On my 85 euro po had the central electrical panel worked on,i don't know if it was changed or not. The car has a jumper where relay 25 should be and starts and runs fine but has a 80 milliamp drain when hooked up this way .no matter what i do the car will not start any other way i am left with the thought that the lh is messed up or the wiring is off as the diagrams i have all disagree with what is there has any one got or can tell me where to find a wiring diagram for a 85 euro 5 speed stock. I know i have a little more checking to do when i can get to ot. but having a known good layout for this car would sure help. thanks all Ray
03-27-2012, 09:52 AM
#2
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First - There is no "relay 25". Relay XXV is the LH Relay. Terminal 85 in the relay socket should be connected to Terminal 21 on the LH ECU. When this terminal is powered by the LH ECU, the relay is activated, and power flows to the MAF and also back to Terminal 9 on the LH ECU. It would appear that the current drain that you are experiencing would be expected with a jumper.
No idea what you have tried (much more info might help with diagnosis), but there should be a standard "53" relay in that socket. If the relay doesn't activate, check for ground on Terminal 86. No idea whether there should be power on Terminal 85 when the ignition switch is on, but I would check to see. If there is power on 85 with ignition on, battery power on Terminal 30, and ground on Terminal 86, the relay should work.
No idea what you have tried (much more info might help with diagnosis), but there should be a standard "53" relay in that socket. If the relay doesn't activate, check for ground on Terminal 86. No idea whether there should be power on Terminal 85 when the ignition switch is on, but I would check to see. If there is power on 85 with ignition on, battery power on Terminal 30, and ground on Terminal 86, the relay should work.
03-27-2012, 03:25 PM
#3
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First - There is no "relay 25". Relay XXV is the LH Relay. Terminal 85 in the relay socket should be connected to Terminal 21 on the LH ECU. When this terminal is powered by the LH ECU, the relay is activated, and power flows to the MAF and also back to Terminal 9 on the LH ECU. It would appear that the current drain that you are experiencing would be expected with a jumper.
No idea what you have tried (much more info might help with diagnosis), but there should be a standard "53" relay in that socket. If the relay doesn't activate, check for ground on Terminal 86. No idea whether there should be power on Terminal 85 when the ignition switch is on, but I would check to see. If there is power on 85 with ignition on, battery power on Terminal 30, and ground on Terminal 86, the relay should work.
No idea what you have tried (much more info might help with diagnosis), but there should be a standard "53" relay in that socket. If the relay doesn't activate, check for ground on Terminal 86. No idea whether there should be power on Terminal 85 when the ignition switch is on, but I would check to see. If there is power on 85 with ignition on, battery power on Terminal 30, and ground on Terminal 86, the relay should work.
03-27-2012, 04:33 PM
#4
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Thread Starter
First - There is no "relay 25". Relay XXV is the LH Relay. Terminal 85 in the relay socket should be connected to Terminal 21 on the LH ECU. When this terminal is powered by the LH ECU, the relay is activated, and power flows to the MAF and also back to Terminal 9 on the LH ECU. It would appear that the current drain that you are experiencing would be expected with a jumper.
No idea what you have tried (much more info might help with diagnosis), but there should be a standard "53" relay in that socket. If the relay doesn't activate, check for ground on Terminal 86. No idea whether there should be power on Terminal 85 when the ignition switch is on, but I would check to see. If there is power on 85 with ignition on, battery power on Terminal 30, and ground on Terminal 86, the relay should work.
No idea what you have tried (much more info might help with diagnosis), but there should be a standard "53" relay in that socket. If the relay doesn't activate, check for ground on Terminal 86. No idea whether there should be power on Terminal 85 when the ignition switch is on, but I would check to see. If there is power on 85 with ignition on, battery power on Terminal 30, and ground on Terminal 86, the relay should work.
Wally,what are you looking at for reference material? that might get me on the right track,best Ray
03-28-2012, 02:38 PM
#5
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Thread Starter
First - There is no "relay 25". Relay XXV is the LH Relay. Terminal 85 in the relay socket should be connected to Terminal 21 on the LH ECU. When this terminal is powered by the LH ECU, the relay is activated, and power flows to the MAF and also back to Terminal 9 on the LH ECU. It would appear that the current drain that you are experiencing would be expected with a jumper.
No idea what you have tried (much more info might help with diagnosis), but there should be a standard "53" relay in that socket. If the relay doesn't activate, check for ground on Terminal 86. No idea whether there should be power on Terminal 85 when the ignition switch is on, but I would check to see. If there is power on 85 with ignition on, battery power on Terminal 30, and ground on Terminal 86, the relay should work.
No idea what you have tried (much more info might help with diagnosis), but there should be a standard "53" relay in that socket. If the relay doesn't activate, check for ground on Terminal 86. No idea whether there should be power on Terminal 85 when the ignition switch is on, but I would check to see. If there is power on 85 with ignition on, battery power on Terminal 30, and ground on Terminal 86, the relay should work.
Wally,i know you saw my first post and i knew some one would get me . I get so into what i am doing stuff like that goes right over my head. so may we start again? Jumper at relay number 25,no it does not matter its still # 25 thank you,Ray
03-28-2012, 02:57 PM
#6
Electron Wrangler
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Alan
03-28-2012, 03:03 PM
#7
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If it will not run with standard SPST Bosch relay here (e.g. horn relay) then its likely your LH is fried. The LH turns on the relay by grounding pin 85.
Your only other alternative to replacing/repairing the LH would be to swap the relay connections - swap 86 to an ignition source (15) and swap 85 to a direct ground. Its not ideal but it will resolve your current problem and its better than what you have now.
Alan
Your only other alternative to replacing/repairing the LH would be to swap the relay connections - swap 86 to an ignition source (15) and swap 85 to a direct ground. Its not ideal but it will resolve your current problem and its better than what you have now.
Alan
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03-28-2012, 08:03 PM
#9
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Thread Starter
If it will not run with standard SPST Bosch relay here (e.g. horn relay) then its likely your LH is fried. The LH turns on the relay by grounding pin 85.
Your only other alternative to replacing/repairing the LH would be to swap the relay connections - swap 86 to an ignition source (15) and swap 85 to a direct ground. Its not ideal but it will resolve your current problem and its better than what you have now.
Alan
Your only other alternative to replacing/repairing the LH would be to swap the relay connections - swap 86 to an ignition source (15) and swap 85 to a direct ground. Its not ideal but it will resolve your current problem and its better than what you have now.
Alan
03-29-2012, 02:31 PM
#11
Nordschleife Master
85 Row uses close to the same as US, a LH 2.2 brain, but with a few changes, no O2 circuit, and I think no IAC. I run a modified map US brain in my 85 Euro, so some details not the same for me and I may have them wrong, but maybe not.
Euro 83 was the last year for Kjet.
Euro 83 was the last year for Kjet.
03-29-2012, 02:34 PM
#12
Nordschleife Master
The point about XXV vs 25 is that when you say 25 everybody that wants to help you has to wonder what exactly you mean or if you have things further confused than we might imagine. Wrong electrical details release the magic smoke that makes this stuff work.
03-29-2012, 05:52 PM
#13
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03-29-2012, 08:09 PM
#15
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Since the '85 Euro uses the LH system then you need to see if you have 12V at term 30 and term 86 of the relay socket for relay XXV. What two terminals on the relay socket are jumper-ed together to make the car run? If you have power at both places check for continuity from relay XXV socket term 85 to CEL plug "W" term 21 (the terminals on the plug are numbered 11-15 from bottom to top on the left row and 21-25 for the right row). If you have continuity, then check for continuity from Plug "W" term 21 to terminal 21 on the LH control unit plug. If you have continuity both places then you likely have a bad LH unit. If you don't have power then check the back of the CEL for damage to the wiring. If you don't have continuity from relay XXV socket pin 85 all the way to term 21 on the LH unit then you need to repair the break in that circuit.
Mike
Mike