4 replies to this topic

[Dazzx10r]

Does anyone have a copy of the wiring diagram for the engine/ecu also the ecu to main loom? I have a copy of the lotus manual on cd but the quality is very poor and it does'nt show the wiring colours or the pin outs on the ecu. As most of you on here know I am well on my way through my own diy Audi engine conversion. The engine is in, all that is left to do is wire it up, fit the intercooler, get custom driveshafts (got a contact for this) and fit a remote oil filter. I have loads of pics on my phone showing the conversion step by step, I just need to find the time to sit down and put them onto my pc and then post on here.

[Martin R]

I have one but im not near it till Monday if no one else can help you.

[varnum]

What details do you need, I have an ECU Pin layout for an Emerald, which is wired as per a MEM's ECU if thats any help?

Emerald Manual attached.

Tim

Attached Files

•  EmeraldK3Manualdraftv057.pdf   1.42MB   122 downloads

[r339xjw]

1 Black-Blue (BU) Lambda 1 Pin 3
2 ------------------
3 Blue-Yellow (UY) Lambda 2 Pin 1 - Via EHC 2 Pin 3
4 Blue-Purple (UP) Crankshaft sensor Pin 2
5 ------------------
6 Blue (U) Oil Pressure?? To 4 pin plug tied back??
7 Pink-Black (KB) Engine coolant sensor (Brown One) Pin 1
8 Yellow-Purple (YP) MAP sensor Pin D (wiper)
9 ------------------
10 ------------------
11 ------------------
12 ------------------
13 Orange-Slate (OS) Output for IACV Pin 3 ( C)
14 Yellow-Brown (YN) Injector 3 Drive (GND)
15 Green-Yellow (GY) Lambda 1 Pin 1
16 Yellow-Purple (YP) Camshaft Sensor Pin 2
17 Black-Slate (BS) Crankshaft sensor screen ground
18 ? Pink-Black (KB) IAT sensor Pin 1
19 Brown-Pink (NK) IGN Power From main relay
20 Green-Yellow (GY) Throttle Possition Sensor Pin 2
21 Slate-White (SW) To EHC 2 Pin 1
22
23
24 Orange-Blue (QB) Output for IACV Pin 4 (D)
25 Yellow-Blue (YU) Injector 1 Drive (GND)
26 White-Black (WB) Igntion coil 2 Pin 2 (GRD)
27 Green-Black (GB) Lambda 2 Pin 3 - Via EHC 2 Pin 13
28 Black-Pink (BK) Screen for Lambda 1
29 Blue-Red (UR) Lambda 2 Pin 2 - Via EHC 2 Pin 14
30 White-Blue (WU) Crankshaft sensor Pin 1
31 Pink-Black (KB) MAP sensor Pin A (Ground)
32 Green-Brown (GN) Oil Pressure?? To 4 pin plug tied back??
33 Pink-Green (KG) Engine coolant sensor (Brown One) Pin 2
34 Pink-Black (KB) Throttle Possition Sensor Pin 3
35 White-Red (WR) Alternator connection to ECU
36
37 Pink-Black (KB) To EHC 2 Pin 2
38 Black-Brown (BN) Canister Purge Valve control (GND)
39 Orange-Green (OG) Output for IACV Pin 2 (
40 Yellow-Brown (YN) Injector 4 Drive (GND)
41 Green-Brown (GN) Lambda 1 Pin 2
42 Black Slate (BS) Camshaft Sensor Pin 3
43 -----------------
44 Yellow-White (YW) Ait intake Temp Sender
45 Red-Green (RG) MAP sensor Pin C (5 V)
46 Pink-Purple (KP) Throttle Possition Sensor Pin 1
47 -----------------
48 -----------------
49 -----------------
50 Pink-Blue (KU) Output for IACV Pin 1 (A)
51 Yellow-Green (YG) Injector 2 Drive (GND)
52 White-Orange (WO) Ignition Coil 1 Pin 2 (GRD)



53 Blue-Black -----------------
54 White-Pink (WK) ECU relay trigger to MRFU1 Pin 3
55 White-Black (WB) Tacho Drive to dashboard to Pin A4
56 Pink-Blue
57 Brown-Black Heat Soak relay trigger
58 White-Yellow (WY) OBD Pin 7
59 Black ( ECU Ground
60 Blue-Green -----------------
61 Light Green (LG) IGN Power fused from key barrel
62 Tuerquise (very Light green) OBD Pin 15
63 Purple-Yellow
64 Light Purple (LP) Wheel speed sensor Pin B
65 Red ® OBD Pin 6
66 Black ( ECU Ground
67 Blue-Slate Brown-Black (NB) Radiator fan Trigger (GRD)
68 Black-Purple (BP) Fuel Pump Relay Trigger MRFU1 Pin 2
69 White Purple (WP) MIL output to dashboard Pin B5
70 Black-Orange
71 Black
72 Green-Blue (GU) Water Temp Output to Dashboard Pin A6
73 Black ( ECU Ground
74 Yellow-Slate (YS) Speedo Output to Dashboard Pin A5
75 Green-Red
76 Red-Green
77 Blue-White
78 Brown (N) Wheel speed sensor Pin A
79 Blue (U) OBD Pin 14
80 Purple (P) Permanent Power from Battery Via Fuse 'B' 7.5A

[Dazzx10r]

Thank guys thats great! I have the lotus wiring diagram now.