Author Topic: Easy to read M42 ECU Pinout (Read 16563 times)

Gunni · « **on:** December 06, 2006, 03:46:56 AM »

Motronic Control unit
   Function   Color
1   Fuel Pump Relay   BR/GN
2
3   Injectors 1-3   BR/WT
4
5
6   Ground   BR/OR
7
8   Check Engine light   BR
9
10
11
12   TPS Signal 5v   BR
13
14   Common 5v   GY/BU
15
16   Camshaft sensor input   YL
17   Fuel rate output   WT
18
19
20
21
22
23
24   Ignition cyl 3   BK
25   Ignition cyl 1   BK
26   Power Input   RD/WT
27   Main Relay control   BR
28   Ground   BR/OR
29   Idle Speed Control   WT/YL
30
31
32   Injectors 2-4   BR/WT
33
34   Ground
35
36   Charcoal Canister control   BR
37   O2 relay control   BR/GN
38
39
40
41   AFM Input (5v)   GY/YL
42
43   Common 5v Coolant and TPS   BR/BK
44   Camshaft sensor input   BK
45
46
47
48
49
50
51   Ignition cyl 4   BK
52   Ignition cyl 2   BK
53
54   Power Input   RD/WT
55   Ground
56   Start Input   GN/YL
57
58
59   Refrence output (Ground??)   GY/WT
60
61
62
63
64
65
66
67   Crankshaft input sensor   BK
68   Crankshaft input sensor   YL
69
70   O2 Input   BK
71   O2 Ground   YL
72
73   Speed Signal input   BK/WT
74   Engine Speed Output
75
76
77   Air temp input   GY/VI
78   Coolant temp input   BR/RD
79
80   Diagnostic voltage   GN/BU
81
82
83
84
85   A/C Input   BK/GY
86   A/C Input   BK/VI
87   RXD Diagnostic   WT/YL
88   TXD Diagnistic   WT/VI

I did these yesterday as I was working on my adapter for my standalone I�m installing, Although I will probably cut up the adapter as it�s only held on with solder and well I wasn�t getting the perfect soldering as I wanted,

I figured I�d throw these on the board for you guys,
This is directly based on the E30_92.pdf file,
the 91 one was empty of all information,

Enjoy

2002maniac · « **Reply #1 on:** December 06, 2006, 07:55:17 AM »

Wow. That's great! Thanks alot!

bmwman91 · « **Reply #2 on:** December 07, 2006, 10:51:57 AM »

Thanks a million! Beats turning pages in the Chilton's!

jajou318 · « **Reply #3 on:** January 05, 2007, 08:42:02 PM »

You're a god , i'm going to be using this for my maf install

kowalski · « **Reply #4 on:** January 18, 2007, 04:24:28 AM »

thanks, i'll be needing this in the summer:D

nickmpower · « **Reply #5 on:** December 18, 2009, 12:31:38 AM »

is there not an ignition on pin? I want to wire it in for my data logger. I guess i will just use the always on.

fiftytakedowns · « **Reply #6 on:** February 09, 2011, 01:23:08 PM »

can I use this to test resistance to see if there is any corrosion?