Audi A2 Conversion: Difference between revisions

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Line 33: Line 33:
|ignition 12V
|ignition 12V
|
|
|
|ro/sw
|-
|-
|5
|5
Line 71: Line 71:
|-
|-
|33
|33
|Throttle second pot +5V
|
|
|
|gr/ge
|
|-
|-
|34
|34
Line 86: Line 86:
|-
|-
|36
|36
|Throttle first pot +5V
|
|
|br/ro
|-
|38
|To cruise control switch *
|
|
|ws
|-
|39
|Clutch pedal sensor * if installed
|
|
|ro/ge
|-
|-
|40
|40
Line 119: Line 129:
|
|
|bl/ws
|bl/ws
|-
|55
|Brake light switch NC to +12V
|
|ws/ro
|-
|56
|Brake light switch NO to +12V
|
|ro/sw
|-
|57
|To cruise control switch *
|
|bl/ro
|-
|58
|CAN L
|
|or/br
|-
|60
|CAN H
|
|or/sw
|-
|-
|63
|63
Line 154: Line 189:
|
|
|sw
|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
|Throttle body sens power
|
|ro/gn
|-
|84
|Throttle body sens 2
|
|gn/bl
|-
|85
|Intake manifold Temp/Pressure
|
|gr
|-
|86
|Hall sender G40 signal
|
|ro/sw
|-
|87
|Engine speed sensor
|
|gn/sw
|-
|-
|88
|88
Line 164: Line 249:
|
|
|li/sw
|li/sw
|-
|91
|Throttle body sens power
|
|ro/bl
|-
|92
|Throttle body sens 1
|
|li/ro
|-
|93
|Coolant temp sensor
|
|gr/ws
|-
|
|
|
|
|-
|-
|96
|96
Line 169: Line 274:
|
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|br/bl
|br/bl
|-
|
|
|
|
|-
|
|
|
|
|-
|-
|97
|97
Line 179: Line 294:
|
|
|gn/li
|gn/li
|-
|99
|Knock sensor
|
|ws
|-
|-
|100
|100
Line 184: Line 304:
|
|
|br/li
|br/li
|-
|102
|Ignition coil bank 1
|
|gn/ws
|-
|103
|Ignition coil bank 2
|
|gn/ro
|-
|106
|Knock sensor
|
|br
|-
|108
|GND for engine sensors
|
|gr/ro
|-
|109
|Intake manifold Temp/Pressure
|
|bl/gn
|-
|-
|114
|114
Line 189: Line 334:
|
|
|li/ge
|li/ge
|-
|117
|Throttle body mot
|
|gn
|-
|118
|Throttle body mot
|
|br/sw
|}
|}

Revision as of 22:28, 6 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
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 * ws
39 Clutch pedal sensor * if installed ro/ge
40 To Climate control display sw/ge
41 To Climate control display sw/gr
43 To instrument cluster (function unknown) gn/sw
51 Lambda (first) signal bl/ws
52 Lambda (first) signal ge
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 To cruise control switch * bl/ro
58 CAN L or/br
60 CAN H or/sw
63 Lambda (second) heater li/ro
64 Charcoal filter solenoid bl/ge
65 Fuel pump relay- control ro/br
68 Lambda (second) signal bl/br
69 Lambda (second) signal ro/li
70 Lambda (first) signal bl
71 Lambda (first) signal 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 Throttle body sens power ro/gn
84 Throttle body sens 2 gn/bl
85 Intake manifold Temp/Pressure gr
86 Hall sender G40 signal ro/sw
87 Engine speed sensor gn/sw
88 Injector 3 sw/li
89 Injector 4 li/sw
91 Throttle body sens power ro/bl
92 Throttle body sens 1 li/ro
93 Coolant temp sensor gr/ws
96 Injector 1 br/bl
97 injector 2 sw/gn
98 +5V wiring to engine bay gn/li
99 Knock sensor ws
100 EGR pot br/li
102 Ignition coil bank 1 gn/ws
103 Ignition coil bank 2 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 Throttle body mot gn
118 Throttle body mot br/sw
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