• rusEFI Proteus can run M70/M73 port injected v12
• we do not support unusual M73 throttle bodies, we also only support 6 wire pedal position sensors. Nissan throttle bodies are the best fit we found for M73
• MAP sensor fuel control strategy is recommended that would require MAP sensor to be fitted on the engine

See also HOWTO-Crimp-Ampseal

Adapter board

See also Vault-Of-Electronic-Throttle-Bodies-ETB Nissan Hitachi SERA576-01 60mm throttle body recommended. In order to mount SERA576-01 you just need to drill ETB bolt passages to 10mm / 3/8".

M73 wiring diagram

~6 wires are different between Proteus 0.2 and Proteus 0.3+ - all on the 23 pin plug.

This HOWTO is focusing on M73 engine with stock ECU harness. 1998 stock ECU harness has two 134 pin connectors.

On my 1998 first set of 9+24+52+40+9=134 pins total is BLACK.

Second set of 9+24+52+40+9=134 pins total is GREY.

rusEFI uses six wire colors: black white red orange green blue.

• +12 from main relay
• x12 injectors
• CLT
• IAT

Total wires between Proteus and GREY - 10 Total wires between Proteus and BLACK - 22

Destination legend: "Black #3 40/52" means "Black set of ECU plugs, connector #3 - pin 40 of 52 total pins"

Pin Number	Name	Type ID	Default function	rusEFI color	new color	Destination
3	Lowside #1	ls	Injector #1	Blue	PURPLE	Black #3 41/52 BRN/WHT
4	Lowside #3	ls	Injector #3	Green	YELLOW	Black #3 40/52
5	Lowside #5	ls	Injector #5	Red	PINK	Black #3 28/52
6	Lowside #6	ls	Injector #6	Orange	ORANGE	Black #3 27/52 BRN/BLK
7	Lowside #7	ls	Injector #7	Blue	PURPLE	Grey #3 41/52 BRN/WHT
8	Lowside #9	ls	Injector #9	Green	YELLOW	Grey #3 40/52
9	Lowside #11	ls	Injector #11	Red	PINK	Grey #3 28/52
10	Lowside #13	ls	low-side output: main relay	Blue	PURPLE	Black #2 23/24 BRN/BLK
11	Lowside #14	ls	low-side output: starter enable	White	WHITE	Black p #4 40/40 YEL/BRN
12	Lowside #15	ls	low-side output: radiator fan relay	green	YELLOW	accessory
15	Lowside #2	ls	Injector #2	Black	BROWN	Black #3 15/52
16	Lowside #4	ls	Injector #4	White	WHITE	Black #3 2/52
17	GND	y	Power GND	Black	BROWN	Grey #1 4/9
18	GND	y	Power GND	Black	BROWN	Black #1 4/9
19	Lowside #8	y	Injector #8	Black	BROWN	Grey #3 15/52
20	Lowside #10	y	Injector #10	White	WHITE	Grey #3 2/52
21	Lowside #12	y	Injector #12	Orange	ORANGE	Grey #3 27/52 BRN/BLK
23	Lowside #16	y	low-side output: fuel pump	Orange	ORANGE	accessory
24	GND	y	Power GND	Black	BROWN	Grey #1 6/9 BRN
30	Ignition 7	y	Ignition cylinder 7	White	WHITE
35	Ignition 1	y	Ignition cylinder 1	Orange	ORANGE

Unused pins are - 1;2;13;14;25;26;27;28;29;31;32;33;34;

Pin Number	Name	Type ID	Default function	rusEFI color	OEM connector
1	DIGITAL 2	din	Camshaft position sensor	Red	Black #3 20/52
2	DIGITAL 3	din	Start button	Orange	accessory
5	VR1 pos	vr	Variable Reluctance #1 positive	Orange	Black #3 32/52
8	ETB1-	y	ETB 1 negative	White
13	VR1 neg	vr	Variable Reluctance #1 negative	Blue	Black #3 46 /52
15	ETB1+	etb	ETB 1 positive	Blue
18	+12 raw	12v	ignition power / ECU power source	Red	Black #4 26/40 GRN/BLK
19	GND	y	Power GND	Black	Black #1 6/9 BRN
21	ETB2-	etb	ETB 2 negative	White
22	ETB2+	etb	ETB 2 positive	Blue
23	+12V mr	12v	ETB/high-side power supply from main relay	Red	Black #1 8/9 RED/BLU
End of Black Proteus 0.2 23 pin table

Pin Number	Name	Type ID	Default function	rusEFI color	new color	OEM connector
1	DIGITAL 2	din	Camshaft position sensor	Red	PINK	Black #3 20/52
2	DIGITAL 3	din	Start signal from ignition key	Orange	ORANGE
5	VR1 pos	vr	Variable Reluctance #1 positive	Orange	ORANGE	Black #3 32/52
6	ETB1-	y	ETB 1 negative	White	WHITE
7	ETB1+	etb	ETB 1 positive	Blue	PURPLE
8	ETB2-	etb	ETB 2 negative	White	WHITE
13	VR1 neg	vr	Variable Reluctance #1 negative	Blue	PURPLE	Black #3 46 /52
15	ETB2+	etb	ETB 2 positive	Blue	PURPLE
16	CAN-	can	CAN bus low	White	WHITE	accessory
17	CAN+	can	CAN bus high	Red	PINK	accessory
18	+12 raw	12v	ignition power / ECU power source	Red	PINK	Black #4 26/40 GRN/BLK
19	GND	y	Power GND	Black	BROWN	Black #1 6/9 BRN
23	+12V mr	12v	ETB/high-side power supply from main relay	Red	PINK	Black #1 8/9 RED/BLU
End of Green Proteus 0.3+ 23 pin table

Unused pins are - 3;4;;9;10;11;12;14;20;21;22;

Pin Number	Name	Type ID	Default function	rusEFI color	new color	OEM connector
1	GND	sgnd	Sensor GND	Black	BROWN	Black #3 21/52 BRN
2	GND	sgnd	Sensor GND	Black	BROWN	ETB #1 sensor GND
3	GND	sgnd	Sensor GND	Black	BROWN	ETB #2 sensor GND
4	GND	sgnd	Sensor GND	Black	BROWN	Grey #3 47/52 BRN
5	GND	sgnd	Sensor GND	Black	BROWN	Throttle Pedal Position GND #1
6	GND	sgnd	Sensor GND	Blue	PURPLE	Throttle Pedal Position GND #2
7	GND	sgnd	Sensor GND	Black	BROWN	Accessory / MAP gnd
8	GND	sgnd	Sensor GND		BROWN	Black #3 50/52 Knock Shield/GND
9	5V SENS 1	5v	Analog Voltage +5 supply #1	Red	PINK	ETB #1 sensor +5v feed
10	5V SENS 2	5v	Analog Voltage +5 supply #2	Red	PINK	Throttle Pedal Position +5v feed #1
14	AV3	av	Analog Voltage Input #3	Orange	ORANGE	TPS1 Secondary signal
15	AV5	av	Analog Voltage Input #5	Orange	ORANGE	TPS2 Secondary signal
16	AV7	av	Analog Voltage Input #7	White	White	Throttle Pedal Position #2 signal
21	5V SENS 1	5v	Analog Voltage +5 supply #1	Orange	ORANGE	Throttle Pedal Position +5v #2
22	5V SENS 2	5v	Analog Voltage +5 supply #2	Red	PINK	Accessory / MAP +5V feed
23	GND	sgnd	Sensor GND		ORANGE	Grey #3 37/52 Knock Shield/GND
24	AV2	av	Analog Voltage Input #2	Green	YELLOW	TPS1 Primary signal
25	AV4	av	Analog Voltage Input #4	Green	YELLOW	TPS2 Primary signal
26	AV6	av	Analog Voltage Input #6	Green	YELLOW	Throttle Pedal Position #1 signal
27	AV8	av	Analog Voltage Input #8	Blue	PURPLE	MAP/MAF accessory
28	AV10	av	Analog Voltage Input #10	Green	YELLOW	AFR/WBO accessory
30	AT2	at	Intake air temperature IAT	Orange	ORANGE	Grey #3 34/52
31	AT4	at	Coolant temperature CLT	Green	YELLOW	Black #3 22/52 RED/BRN
32	5V SENS 1	5v	Analog Voltage +5 supply #1	Red	PINK	ETB #2 sensor +5v feed
34	knock		Knock #1		ORANGE	Black #3 49/52
35	knock		Knock #2		PURPLE	Grey #3 36/52

Unused pins are - 8;11;12;13;17;18;19;20;23;29;34;35;

Wire length:

ETB/Pedal: 7ft/213cm

ECU/OEM pigtails: 52 inches / 132cm

Color	Quantity on 35 Black
Orange	4
Red	2
White	4
Blue	3
Black	5
Green	3
Total	21

Color	Quantity on 23 Black
Orange	2
Red	4
White	3
Blue	3
Black	1
Green	0
Total	13

Color	Quantity on 35 white
Orange	4
Red	4
White	1
Blue	2
Black	6
Green	5
Total	22

Color	Total Proteus Quantity	Short	Long
Orange	10	7	3
Red	10	7	3
White	8	5	3
Blue	8	5	3
Black	12	9	3
Green	8	5	3
Total	56	38	18

Color	Accessory function
Orange	Start button
White	CAN
Red	CAN
Red	MAP 5v
Black	MAP GND
Blue	MAP Signal
Green	AFR WBO Signal
Green	Radiator Fan Relay
Orange	Fuel Pump Relay

Pin Number	Name	Type ID	Default function	rusEFI color	OEM connector
.

Pin	type	OEM color	Description	rusEFI color

Pin	type	OEM color	Description	rusEFI color

Pin	type	OEM color	Description	rusEFI color
6	IN		start signal from ignition key
17	OUT	BLK	engine speed output for gauge cluster
26	IN	GRN/BLK	RED +12v hot in start & run
40	OUT	YEL/BRN	BRN starter enable

Pin	type	OEM color	Description	rusEFI color
3	OUT BLK	ORANGE	coil signal, low-side
5	GND BRN	GND	ground
6	OUT BLK	ORANGE	coil signal, low-side
9	OUT BLK	ORANGE	coil signal, low-side

Toyota coil output pin #10 GREEN goes to BLACK breakout

Toyota coil output pin #1 YELLOW goes to GREY breakout

Toyota GND pin #3 goes to both BLACK and GREY breakout #5 5/9

Toyota Battery pin #9 to both BLACK and GREY breakout #1 8/9

• Plug #5 9 pin
• ECU pin 3: OUT BLK RED coil signal, low-side
• ECU pin 5: GND BRN GND ground
• ECU pin 6: OUT BLK RED coil signal, low-side
• ECU pin 9: OUT BLK RED coil signal, low-side

See also the Vault of Electronic Throtttle Bodies

Pictured Proteus with ampseal connectors, non-BMW pedal sensor, two non-BMW ETB connectors, igniter, two breakout boards for the stock connectors.

OEM pedal and ETBs are too unusual thus complete redesign of pedal and ETB hardware and wiring.