openinverter.org wiki - User contributions [en]

Audi A2 Conversion

2022-02-07T08:55:13Z

Geduxaz: /* ECU */

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

[[File:VAG wire color codes.png|thumb]]
{| class="wikitable"
|+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
|-
|75/76
|To cruise control switch *
|
|bl/sw sw/ro
|-
|82
|Engine speed sensor
|
|gr/br
|-
|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
|-
|83/84
91/92

117/118
|Throttle body senror
Throttle body sensor

Throttle body motor
|
|ro/gn gn/bl
ro/bl li/ro

gn br/sw
|-
|93
|Coolant temp sensor
|
|gr/ws
|-
|98
| +5V wiring to engine bay
|
|gn/li
|-
|99
|Knock sensor
|
|ws
|-
|100
114
|EGR pot
EGR mot
|
|br/li
li/ge
|-
|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
|}
{| class="wikitable"
|+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
|-
|14
|Thermo-switch for coolant circulation
|
|ro/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
|-
|49/51/52/55
|Cruise control switch * If installed
|
|bl/sw ws sw/ro bl/ro
|-
|53
|To airbag ECU
|
|ws/bl
|-
|59
|Instrument cluster
|
|gn/sw
|-
|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
|-
|81/100/101
108/109
|Coils
|
|ro/sw ro/bl ge/gn
ge/bl gn/ge
|-
|82/90
|G28 Engine speed sensor
|
|gr/br gr/ro
|-
|83
|G40 Hall sender
|
|br/bl
|-
|84
|G71 Intake manifold pressure sens
|
|ge/ro
|-
|85/87/96
|EGR sensor + motor
|
|li/gr li/ws ro/ws
|-
|86
|Coolant temp sensor
|
|gr/ws
|-
|88
|N316 Intake manifold flap valve
|
|li/ge
|-
|89
|F265 Controlled cooling thermostat
|
|ro/br
|-
|91
|G336 Intake flap potentiometer
|
|ge/ro
|-
|94
|G247 Fuel pressure sensor
|
|gr
|-
|99
| +5V to sensors
|
|li/ro
|-
|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
|-
|103/110/111
|Knock sensor
|
|br br ws
|-
|106
|Sensor gnd in engine bay
|
|gr/gn
|-
|114/115
116/117

119/120
|Injectors 1-4
|
|br/ge br/ws
br/gn br/ro

br/bl br/sw
|}

Audi A2 Conversion

2022-02-07T08:54:57Z

Geduxaz: /* ECU */

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

[[File:VAG wire color codes.png|thumb]]
{| class="wikitable"
|+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
|-
|75/76
|To cruise control switch *
|
|bl/sw sw/ro
|-
|82
|Engine speed sensor
|
|gr/br
|-
|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
|-
|83/84
91/92

117/118
|Throttle body senror
Throttle body sensor

Throttle body motor
|
|ro/gn gn/bl
ro/bl li/ro

gn br/sw
|-
|93
|Coolant temp sensor
|
|gr/ws
|-
|98
| +5V wiring to engine bay
|
|gn/li
|-
|99
|Knock sensor
|
|ws
|-
|100
114
|EGR pot
EGR mot
|
|br/li
li/ge
|-
|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
|}
{| class="wikitable"
|+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
|-
|14
|Thermo-switch for coolant circulation
|
|ro/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
|-
|49/51/52/55
|Cruise control switch * If installed
|
|bl/sw ws sw/ro bl/ro
|-
|53
|To airbag ECU
|
|ws/bl
|-
|59
|Instrument cluster
|
|gn/sw
|-
|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
|-
|81/100/101
108/109
|Coils
|
|ro/sw ro/bl ge/gn
ge/bl gn/ge
|-
|82/90
|G28 Engine speed sensor
|
|gr/br gr/ro
|-
|83
|G40 Hall sender
|
|br/bl
|-
|84
|G71 Intake manifold pressure sens
|
|ge/ro
|-
|85/87/96
|EGR sensor + motor
|
|li/gr li/ws ro/ws
|-
|86
|Coolant temp sensor
|
|gr/ws
|-
|88
|N316 Intake manifold flap valve
|
|li/ge
|-
|89
|F265 Controlled cooling thermostat
|
|ro/br
|-
|91
|G336 Intake flap potentiometer
|
|ge/ro
|-
|94
|G247 Fuel pressure sensor
|
|gr
|-
|99
| +5V to sensors
|
|li/ro
|-
|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
|-
|103/110/111
|Knock sensor
|
|br br ws
|-
|106
|Sensor gnd in engine bay
|
|gr/gn
|-
|114/115
116/117

119/120
|Injectors 1-4
|
|br/ge br/ws
br/gn br/ro

br/bl br/sw
|}

Audi A2 Conversion

2022-02-07T08:36:49Z

Geduxaz: /* ECU */

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

[[File:VAG wire color codes.png|thumb]]
{| class="wikitable"
|+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
|-
|75/76
|To cruise control switch *
|
|bl/sw sw/ro
|-
|82
|Engine speed sensor
|
|gr/br
|-
|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
|-
|83/84
91/92

117/118
|Throttle body senror
Throttle body sensor

Throttle body motor
|
|ro/gn gn/bl
ro/bl li/ro

gn br/sw
|-
|93
|Coolant temp sensor
|
|gr/ws
|-
|98
| +5V wiring to engine bay
|
|gn/li
|-
|99
|Knock sensor
|
|ws
|-
|100
114
|EGR pot
EGR mot
|
|br/li
li/ge
|-
|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
|}
{| class="wikitable"
|+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
|-
|
|
|
|
|-
|
|
|
|
|}

Audi A2 Conversion

2022-02-07T08:33:16Z

Geduxaz: /* ECU */

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

[[File:VAG wire color codes.png|thumb]]
{| class="wikitable"
|+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
|}
{| class="wikitable"
|+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
|-
|
|
|
|
|-
|
|
|
|
|}

Audi A2 Conversion

2022-02-07T08:03:51Z

Geduxaz: /* ECU */

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

[[File:VAG wire color codes.png|thumb]]
{| class="wikitable"
|+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 *
|
|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
|}
{| class="wikitable"
|+ECU pinout 1.6FSI
!#
!Org Function
!Ours
!Color
|-
|1/2
|GND
|
|br br
|-
|3/5
|permanent 12V
|
|gn/ge gn/ge
|-
|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
|-
|13/17/30
|Air mass meter
|
|gr/ro gr/ws li/ws
|-
|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
|-
|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
|-
|114/115
116/117

119/120
|Injectors 1-4
|
|br/ge br/ws
br/gn br/ro

br/bl br/sw
|-
|
|
|
|
|-
|
|
|
|
|}

Audi A2 Conversion

2022-02-07T07:17:21Z

Geduxaz: /* ECU */

Audi A2 Conversion

2022-02-06T22:28:22Z

Geduxaz: /* ECU */

Audi A2 Conversion

2022-02-06T19:17:58Z

Geduxaz: /* ECU */

Audi A2 Conversion

2022-02-06T19:12:09Z

Geduxaz: /* ECU */

Audi A2 Conversion

2022-02-06T19:07:45Z

Geduxaz: /* ECU */

Audi A2 Conversion

2022-02-06T18:58:24Z

Geduxaz: /* ECU */

File:VAG wire color codes.png

2022-02-06T18:56:23Z

Geduxaz:

color codes for VAG cars