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connections to check... Posted by JimBlake [Email] (#141) [Profile/Gallery] (more from JimBlake) on Wed, 21 Aug 2002 08:16:09 In Reply to: '89 900S Mysterious ECU issues & fault code, Mr. Science, Tue, 20 Aug 2002 16:46:20 Members do not see ads below this line. - Help Keep This Site Online - Signup |
When you had trouble before, I started to compare '88 vs. '89 ECU connections, but I thought you were back on the road with the '88 ECU before I was done. I guess I didn't follow close enough... sorry.
I don't think any of the differences can cause any damage to either ECU, but if you're going to trace wiring, especially to the AMM, here a list...
BTW, AMM gets 12v power thru its pins 1 & 5, but I forget which is (+) or (-).
------------------------------------------
ECU pins in
model years: connected to:
'88 '89
1 1 EZK(176) pin 17
5 5 EZK(176) pin 20
25 25 EZK(176) pin 8
2 2 EZK(176) pin 7
5 5 ground(201)
2 2 TPS(203) pin 1
3 3 TPS(203) pin 3
3 3 ACrelay(156) pin TK
14 - ACrelay(156) pin 87B thru coolant temp switch (168)
- 14 ACrelay(156) pin 16
4 4 +12v via fuelpumprelay(102)supply
5 5 ground(201)
6 6 AMM(205) pin 2
7 7 AMM(205) pin 3
8 8 AMM(205) pin 4
9 9 +12v from mainrelay(229) pin 87
- 12 CELtestplug(347) pin 1 (under back seat)
- 16 CELtestplug(347) pin 2 (under back seat)
16 - CELtestplug(204) pin 1 (RH fender)
13 13 NTCsensor(202) pin 1
15 - connector(322) pin 2 (gets 12v in SE, EU, CA)
- 15 connector(368) pin 2
17 17 ground(201)
18 18 fuel injectors (206) pin 2
19 - ground(201)
20 20 FuelPump relay(102) pin 85
21 21 FI main relay(229) pin 85
22 22 CheckEnginelamp(47P)
24 24 lambdasensor(136)
24s 24s ground(201) ("24s" = shield around wire 24)
- 26 Upshiftlamp(47K) in US man.
27 27 ELCDvalve(321) pin 1
29 29 AutoMan? plug (322) pin 2
30 30 Auto trans. engaged - idle
- 32 cold start injector (SE, EU, CA only)
33 33 AIC valve pin 2
- 34 speed transmitter
35 35 12v power from fuse 22
posted by 131.184.14...
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