Audi A2 Conversion: Difference between revisions

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Line 66: Line 66:
|-
|-
|38
|38
|To cruise control switch *
|To cruise control switch * if installed
|
|
|ws
|ws
Line 75: Line 75:
|ro/ge
|ro/ge
|-
|-
|40
|40/41
|To Climate control display
|
|sw/ge
|-
|41
|To Climate control display
|To Climate control display
|
|
|sw/gr
|sw/ge sw/gr
|-
|-
|43
|43/54
|To instrument cluster (function unknown)
|To instrument cluster (function unknown)
|
|
|gn/sw
|gn/sw bl/ws
|-
|-
|51
|51/52
|Lambda (first) signal
|Lambda (first) signal
|
|
|bl/ws
|bl/ws ge
|-
|-
|52
|55/56
|Lambda (first) signal
|Brake light switch NC/NO to +12V
|
|
|ge
|ws/ro ro/sw
|-
|54
|To instrument cluster (function unknown)
|
|bl/ws
|-
|55
|Brake light switch NC to +12V
|
|ws/ro
|-
|56
|Brake light switch NO to +12V
|
|ro/sw
|-
|-
|57
|57
|To cruise control switch *
|To cruise control switch * if installed
|
|
|bl/ro
|bl/ro
|-
|-
|58
|58/60
|CAN L
|CAN-L CAN-H
|
|
|or/br
|or/br or/sw
|-
|60
|CAN H
|
|or/sw
|-
|-
|63
|63
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|ro/br
|ro/br
|-
|-
|68
|68/69
|Lambda (second) signal
|Lambda (second) signal
|
|
|bl/br
|bl/br ro/li
|-
|69
|Lambda (second) signal
|
|ro/li
|-
|70
|Lambda (first) signal
|
|bl
|-
|-
|71
|70/71
|Lambda (first) signal
|Lambda (first) signal
|
|
|sw
|bl sw
|-
|-
|72
|72
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|gr/br
|gr/br
|-
|-
|83
|83/84
|Throttle body sens power
|Throttle body  
|
|
|ro/gn
|ro/gn gn/bl
|-
|84
|Throttle body sens 2
|
|gn/bl
|-
|-
|85
|85
Line 215: Line 175:
|gn/sw
|gn/sw
|-
|-
|88
|88/89
|Injector 3
96/97
|
|Injector 1-4
|sw/li
|-
|89
|Injector 4
|
|
|li/sw
|sw/li li/sw
br/bl sw/gn
|-
|-
|91
|91
Line 239: Line 196:
|
|
|gr/ws
|gr/ws
|-
|96
|Injector 1
|
|br/bl
|-
|97
|injector 2
|
|sw/gn
|-
|-
|98
|98
Line 265: Line 212:
|br/li
|br/li
|-
|-
|102
|102/103
|Ignition coil bank 1
|Ignition coil bank 1/2
|
|gn/ws
|-
|103
|Ignition coil bank 2
|
|
|gn/ro
|gn/ws gn/ro
|-
|-
|106
|106
Line 295: Line 237:
|li/ge
|li/ge
|-
|-
|117
|117/118
|Throttle body mot
|Throttle body mot
|
|
|gn
|gn br/sw
|-
|118
|Throttle body mot
|
|br/sw
|}
|}
{| class="wikitable"
{| class="wikitable"
Line 321: Line 258:
|
|
|gn/ge gn/ge
|gn/ge gn/ge
|-
|4/20/21
39/40
|First Lambda
|
|ge ro/ge bl/ge
br/ge li/gr
|-
|-
|6
|6
Line 343: Line 287:
|sw br/ws bl
|sw br/ws bl
ws/sw ge/ro
ws/sw ge/ro
|-
|12
|Heater output switch
|
|ge/br
|-
|-
|13/17/30
|13/17/30
Line 348: Line 297:
|
|
|gr/ro gr/ws li/ws
|gr/ro gr/ws li/ws
|-
|15/18/43
33/19/24
|Throttle POT1/2 (signal/Gnd/+5)
|
|ge/li br/ro ge/li
br/gn gr/ge gr
|-
|
|
|
|
|-
|-
|23/46
|23/46
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|
|
|ge/gn
|ge/gn
|-
|60/80
|NOX heater
|
|br/ws br/ws
|-
|-
|62/64
|62/64
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|
|
|gn/bl
|gn/bl
|-
|92/93102
107/118/121
|Throttle body
|
|li/ge li/gr ws
ro/gn ro/bl li
|-
|-
|114/115
|114/115

Revision as of 08:33, 7 February 2022

On this page we describe the conversion of an Audi A2 1.4i petrol to electric propulsion. We will use the following components:

  • Nissan Leaf 24 kWh battery pack with original BMS
  • Toyota Prius Gen 2 (2004-2009) transaxle with matching inverter
  • openinverter Prius Gen2 motor controller
  • openinverter main board running stm32-car (VCU in ECU enclosure)

Pin mapping

We start out by mapping out useful pins of the original wire harness

ECU

The ECU has two connector slots, a smaller one with pins 82-121 and a larger one with pins 1-81. Here we map out pins useful to us

VAG wire color codes.png
ECU pinout 1.4i (AUA, BBY)
# orig function our function wire color
1,2 GND br
3 permanent 12V ro
4 ignition 12V ro/sw
5 Lambda (first) heater gr
28 From generator (maybe DF) li/bl
33 Throttle second pot +5V gr/ge
34 Throttle second pot (signal) br/gn
35 Throttle first pot (signal) ge/bl
36 Throttle first pot +5V br/ro
38 To cruise control switch * if installed ws
39 Clutch pedal sensor * if installed ro/ge
40/41 To Climate control display sw/ge sw/gr
43/54 To instrument cluster (function unknown) gn/sw bl/ws
51/52 Lambda (first) signal bl/ws ge
55/56 Brake light switch NC/NO to +12V ws/ro ro/sw
57 To cruise control switch * if installed bl/ro
58/60 CAN-L CAN-H or/br or/sw
63 Lambda (second) heater li/ro
64 Charcoal filter solenoid bl/ge
65 Fuel pump relay- control ro/br
68/69 Lambda (second) signal bl/br ro/li
70/71 Lambda (first) signal bl sw
72 Throttle second pot GND gr
73 Throttle first pot GND ge/li
75 To cruise control switch * bl/sw
76 To cruise control switch * sw/ro
82 Engine speed sensor gr/br
83/84 Throttle body ro/gn gn/bl
85 Intake manifold Temp/Pressure gr
86 Hall sender G40 signal ro/sw
87 Engine speed sensor gn/sw
88/89

96/97

Injector 1-4 sw/li li/sw

br/bl sw/gn

91 Throttle body sens power ro/bl
92 Throttle body sens 1 li/ro
93 Coolant temp sensor gr/ws
98 +5V wiring to engine bay gn/li
99 Knock sensor ws
100 EGR pot br/li
102/103 Ignition coil bank 1/2 gn/ws gn/ro
106 Knock sensor br
108 GND for engine sensors gr/ro
109 Intake manifold Temp/Pressure bl/gn
114 EGR mot li/ge
117/118 Throttle body mot gn br/sw
ECU pinout 1.6FSI
# Org Function Ours Color
1/2 GND br br
3/5 permanent 12V gn/ge gn/ge
4/20/21

39/40

First Lambda ge ro/ge bl/ge

br/ge li/gr

6 N290 Fuel metering valve ro/bl
7 Fuel pump relay control ro/br
8/10 CAN-H CAN-L or/sw or/br
11/16/31

32/50

NOX controller sw br/ws bl

ws/sw ge/ro

12 Heater output switch ge/br
13/17/30 Air mass meter gr/ro gr/ws li/ws
15/18/43

33/19/24

Throttle POT1/2 (signal/Gnd/+5) ge/li br/ro ge/li

br/gn gr/ge gr

23/46 Climate cotroler sw/gr sw/ge
26/45 Radiator fan controller sw/ge ge/gr
35 EGT ro/gn
36 Brake vaccum sensor bl/br
37 Sensors GND ge/bl
48/57 Brake light switch NO/NC ro/sw ws/ro
42 +5V to sensors ge/gn
60/80 NOX heater br/ws br/ws
62/64 Current supply relay ro gr/ro
65 Generator DF li/br
67 Clutch pedal switch * if fitted ro/ge
78 N79 crankcase breather heater br
88 N316 Intake manifold flap valve li/ge
89 F265 Controlled cooling thermostat ro/br
105 N205 Inlet Camsh. timing valve li/gn
113 N276 Fuel pressure regulating valve gn/bl
92/93102

107/118/121

Throttle body li/ge li/gr ws

ro/gn ro/bl li

114/115

116/117

119/120

Injectors 1-4 br/ge br/ws

br/gn br/ro

br/bl br/sw

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