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FAQ / REFERENCE => M42 Reference => Topic started by: Gunni on December 06, 2006, 03:46:56 AM

Title: Easy to read M42 ECU Pinout
Post by: 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

Title: Easy to read M42 ECU Pinout
Post by: 2002maniac on December 06, 2006, 07:55:17 AM

Wow. That's great! Thanks alot!

Title: Easy to read M42 ECU Pinout
Post by: bmwman91 on December 07, 2006, 10:51:57 AM

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

Title: Easy to read M42 ECU Pinout
Post by: jajou318 on January 05, 2007, 08:42:02 PM

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

Title: Easy to read M42 ECU Pinout
Post by: kowalski on January 18, 2007, 04:24:28 AM

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

Title: Easy to read M42 ECU Pinout
Post by: nickmpower 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.

Title: Easy to read M42 ECU Pinout
Post by: fiftytakedowns on February 09, 2011, 01:23:08 PM

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