Honda NSX NA1 1991-2005 (C30A) → MaxxECU MaxxECU GEN2 RACE (auto)

Honda NSX NA1 1991-2005 (C30A) — MaxxECU — MaxxECU GEN2 RACE

⚠ NOT CHECKED. Don't build from this.

Drawn by Michael Gnankou · Rev 0 · draft · 2026-10-08

Before you start

Status	draft · not yet verified: nobody has reported building and running this harness
Open errors	none
Size of the job	69 wires · 13 connectors · 0 part lines
Tools	Crimp and extraction tools for each terminal family (see Connectors) · wire strippers · multimeter · heat gun + heat-shrink
Order of work	1. Check every part against the parts list. 2. Cut and label every wire (labels: Export → Wire labels). 3. Crimp and pin connector by connector, ticking the build checklist. 4. Run the bench test with nothing plugged in and the battery disconnected. 5. Only then connect the ECU and power up.

Build checklist

Tick each box as you go. Continuity: meter from end to end, expect under 1 Ω.

Wire	From	To	Gauge	Cut	Label	Crimp A	Crimp B	Pin A	Pin B	Continuity
W1	OEM-A-25	SP-14V-1	0.85	☐	☐	☐	☐	☐	☐	☐
W2	OEM-C-1	SP-14V-1	0.85	☐	☐	☐	☐	☐	☐	☐
W3	SP-14V-1	MAXXECUGEN2R-MX1-25	0.85	☐	☐	☐	☐	☐	☐	☐
W4	SP-14V-1	MAXXECUGEN2R-MX2-25	0.85	☐	☐	☐	☐	☐	☐	☐
W5	OEM-A-23	SP-GND-1	0.85	☐	☐	☐	☐	☐	☐	☐
W6	OEM-A-24	SP-GND-1	0.85	☐	☐	☐	☐	☐	☐	☐
W7	OEM-B-2	SP-GND-1	0.85	☐	☐	☐	☐	☐	☐	☐
W8	SP-GND-1	MAXXECUGEN2R-MX1-9	0.85	☐	☐	☐	☐	☐	☐	☐
W9	SP-GND-1	MAXXECUGEN2R-MX2-9	0.85	☐	☐	☐	☐	☐	☐	☐
W10	SP-GND-1	MAXXECUGEN2R-MX3-9	0.85	☐	☐	☐	☐	☐	☐	☐
W11	OEM-A-26	SP-0V-1	0.5	☐	☐	☐	☐	☐	☐	☐
W12	OEM-B-10	SP-0V-1	0.5	☐	☐	☐	☐	☐	☐	☐
W13	OEM-B-12	SP-0V-1	0.5	☐	☐	☐	☐	☐	☐	☐
W14	OEM-B-14	SP-0V-1	0.5	☐	☐	☐	☐	☐	☐	☐
W15	OEM-B-16	SP-0V-1	0.5	☐	☐	☐	☐	☐	☐	☐
W16	OEM-D-21	SP-0V-1	0.5	☐	☐	☐	☐	☐	☐	☐
W17	OEM-D-22	SP-0V-1	0.5	☐	☐	☐	☐	☐	☐	☐
W18	SP-0V-1	MAXXECUGEN2R-MX1-14	0.5	☐	☐	☐	☐	☐	☐	☐
W19	OEM-D-18	SP-5V1-1	0.5	☐	☐	☐	☐	☐	☐	☐
W20	OEM-D-19	SP-5V1-1	0.5	☐	☐	☐	☐	☐	☐	☐
W21	OEM-D-20	SP-5V1-1	0.5	☐	☐	☐	☐	☐	☐	☐
W22	SP-5V1-1	MAXXECUGEN2R-MX1-12	0.5	☐	☐	☐	☐	☐	☐	☐
W23	OEM-B-15	MAXXECUGEN2R-MX1-10	0.5	☐	☐	☐	☐	☐	☐	☐
W24	OEM-B-11	MAXXECUGEN2R-MX1-18	0.5	☐	☐	☐	☐	☐	☐	☐
W25	OEM-D-4	MAXXECUGEN2R-MX2-28	0.5	☐	☐	☐	☐	☐	☐	☐
W26	OEM-D-3	MAXXECUGEN2R-MX2-31	0.5	☐	☐	☐	☐	☐	☐	☐
W27	OEM-A-21	MAXXECUGEN2R-MX1-1	0.5	☐	☐	☐	☐	☐	☐	☐
W28	OEM-A-22	MAXXECUGEN2R-MX1-2	0.5	☐	☐	☐	☐	☐	☐	☐
W29	OEM-B-8	MAXXECUGEN2R-MX1-3	0.5	☐	☐	☐	☐	☐	☐	☐
W30	OEM-B-6	MAXXECUGEN2R-MX1-4	0.5	☐	☐	☐	☐	☐	☐	☐
W31	OEM-B-4	MAXXECUGEN2R-MX2-1	0.5	☐	☐	☐	☐	☐	☐	☐
W32	OEM-B-3	MAXXECUGEN2R-MX2-2	0.5	☐	☐	☐	☐	☐	☐	☐
W33	OEM-A-1	MAXXECUGEN2R-MX1-31	0.5	☐	☐	☐	☐	☐	☐	☐
W34	OEM-A-3	MAXXECUGEN2R-MX1-32	0.5	☐	☐	☐	☐	☐	☐	☐
W35	OEM-A-5	MAXXECUGEN2R-MX1-33	0.5	☐	☐	☐	☐	☐	☐	☐
W36	OEM-A-2	MAXXECUGEN2R-MX1-34	0.5	☐	☐	☐	☐	☐	☐	☐
W37	OEM-A-4	MAXXECUGEN2R-MX2-33	0.5	☐	☐	☐	☐	☐	☐	☐
W38	OEM-A-6	MAXXECUGEN2R-MX2-34	0.5	☐	☐	☐	☐	☐	☐	☐
W39	OEM-A-8	MAXXECUGEN2R-MX1-5	0.5	☐	☐	☐	☐	☐	☐	☐
W40	OEM-A-15	MAXXECUGEN2R-MX1-6	0.5	☐	☐	☐	☐	☐	☐	☐
W41	OEM-A-18	MAXXECUGEN2R-MX1-7	0.5	☐	☐	☐	☐	☐	☐	☐
W42	OEM-A-7	MAXXECUGEN2R-MX1-8	0.5	☐	☐	☐	☐	☐	☐	☐
W43	OEM-5-F5	MAXXECUGEN2R-MX3-14	0.5	☐	☐	☐	☐	☐	☐	☐
W44	OEM-5-F7	MAXXECUGEN2R-MX3-15	0.5	☐	☐	☐	☐	☐	☐	☐
W45	OEM-A-10	MAXXECUGEN2R-MX2-12	0.5	☐	☐	☐	☐	☐	☐	☐
W46	OEM-A-12	MAXXECUGEN2R-MX3-12	0.5	☐	☐	☐	☐	☐	☐	☐
W47	OEM-A-11	MAXXECUGEN2R-MX1-17	0.5	☐	☐	☐	☐	☐	☐	☐
W48	OEM-A-13	MAXXECUGEN2R-MX2-3	0.5	☐	☐	☐	☐	☐	☐	☐
W49	OEM-A-14	MAXXECUGEN2R-MX3-29	0.5	☐	☐	☐	☐	☐	☐	☐
W50	OEM-A-20	MAXXECUGEN2R-MX3-30	0.5	☐	☐	☐	☐	☐	☐	☐
W51	OEM-A-9	MAXXECUGEN2R-MX3-31	0.5	☐	☐	☐	☐	☐	☐	☐
W52	OEM-D-17	MAXXECUGEN2R-MX1-26	0.5	☐	☐	☐	☐	☐	☐	☐
W53	OEM-D-11	MAXXECUGEN2R-MX1-27	0.5	☐	☐	☐	☐	☐	☐	☐
W54	OEM-D-14	MAXXECUGEN2R-MX1-28	0.5	☐	☐	☐	☐	☐	☐	☐
W55	OEM-D-16	MAXXECUGEN2R-MX1-29	0.5	☐	☐	☐	☐	☐	☐	☐
W56	OEM-D-13	MAXXECUGEN2R-MX1-30	0.5	☐	☐	☐	☐	☐	☐	☐
W57	OEM-D-15	MAXXECUGEN2R-MX2-4	0.5	☐	☐	☐	☐	☐	☐	☐
W58	OEM-D-12	MAXXECUGEN2R-MX2-5	0.5	☐	☐	☐	☐	☐	☐	☐
W59	OEM-C-2	MAXXECUGEN2R-MX1-23	0.5	☐	☐	☐	☐	☐	☐	☐
W60	OEM-D-9	MAXXECUGEN2R-MX1-24	0.5	☐	☐	☐	☐	☐	☐	☐
W61	OEM-5-F2	MAXXECUGEN2R-MX4-3	0.5	☐	☐	☐	☐	☐	☐	☐
W62	OEM-5-F4	MAXXECUGEN2R-MX4-6	0.5	☐	☐	☐	☐	☐	☐	☐
W63	OEM-B-7	MAXXECUGEN2R-MX4-9	0.5	☐	☐	☐	☐	☐	☐	☐
W64	OEM-C-11	MAXXECUGEN2R-MX4-28	0.5	☐	☐	☐	☐	☐	☐	☐
W65	OEM-C-3	MAXXECUGEN2R-MX2-6	0.5	☐	☐	☐	☐	☐	☐	☐
W66	OEM-C-5	MAXXECUGEN2R-MX2-13	0.5	☐	☐	☐	☐	☐	☐	☐
W67	OEM-C-7	MAXXECUGEN2R-MX2-14	0.5	☐	☐	☐	☐	☐	☐	☐
W68	OEM-C-9	MAXXECUGEN2R-MX2-15	0.5	☐	☐	☐	☐	☐	☐	☐
W69	OEM-D-8	MAXXECUGEN2R-MX2-16	0.5	☐	☐	☐	☐	☐	☐	☐

Bench test (before first power-up)

Battery disconnected, ECU and every sensor unplugged. Meter on resistance. Each pair below must read open (OL): a reading means a pinched wire, a stray strand or a mis-pinned cavity. Then check continuity of every wire (last column of the build checklist).

#	Probe A	Probe B	Expect	Why
1	MAXXECUGEN2R-MX1-25	MAXXECUGEN2R-MX1-14	open (OL)	+12 V supply must not touch sensor ground
2	MAXXECUGEN2R-MX1-14	MAXXECUGEN2R-MX1-12	open (OL)	sensor ground must not touch 5 V sensor reference
3	MAXXECUGEN2R-MX1-25	MAXXECUGEN2R-MX1-12	open (OL)	+12 V supply must not touch 5 V sensor reference
4	MAXXECUGEN2R-MX1-9	MAXXECUGEN2R-MX1-12	open (OL)	power ground must not touch 5 V sensor reference
5	MAXXECUGEN2R-MX1-9	MAXXECUGEN2R-MX1-25	open (OL)	power ground must not touch +12 V supply

Revisions

Rev	Label	By	Date
No revisions yet.

Schematic

Connectors

MAXXECUGEN2R-MX1

Cavity	Function	Signal	Wire	Colour	Gauge (mm²)	Destination	Terminal	Seal	Plug
1	Ignition 1	—	W27	—	0.5	OEM-A-21	—	—	—
10	Digital/VR 1 SIGNAL +	—	W23	—	0.5	OEM-B-15	—	—	—
11	Digital/VR 1 SIGNAL -	—	—	—	—	—	—	—	—
12	Digital/VR 1 POWER SUPPLY	—	W22	—	0.5	SP-5V1-1	—	—	—
13	Digital/VR 1 SHIELD	—	—	—	—	—	—	—	—
14	SENSOR GND	—	W18	—	0.5	SP-0V-1	—	—	—
15	CAN L	—	—	—	—	—	—	—	—
16	CAN H	—	—	—	—	—	—	—	—
17	GP out 5 (GND)	—	W47	—	0.5	OEM-A-11	—	—	—
18	Digital/VR 2 SIGNAL +	—	W24	—	0.5	OEM-B-11	—	—	—
19	Digital/VR 2 SIGNAL -	—	—	—	—	—	—	—	—
2	Ignition 2	—	W28	—	0.5	OEM-A-22	—	—	—
20	Digital/VR 2 POWER SUPPLY	—	—	—	—	—	—	—	—
21	Digital/VR 2 SHIELD	—	—	—	—	—	—	—	—
22	5V power supply	—	—	—	—	—	—	—	—
23	Digital/VR 3 SIGNAL +	—	W59	—	0.5	OEM-C-2	—	—	—
24	Digital/VR 4 SIGNAL +	—	W60	—	0.5	OEM-D-9	—	—	—
25	12V supply 1	—	W3	—	0.85	SP-14V-1	—	—	—
26	AIN 1	—	W52	—	0.5	OEM-D-17	—	—	—
27	AIN 2	—	W53	—	0.5	OEM-D-11	—	—	—
28	AIN 3	—	W54	—	0.5	OEM-D-14	—	—	—
29	AIN 4	—	W55	—	0.5	OEM-D-16	—	—	—
3	Ignition 3	—	W29	—	0.5	OEM-B-8	—	—	—
30	AIN 5	—	W56	—	0.5	OEM-D-13	—	—	—
31	INJECTOR 1	—	W33	—	0.5	OEM-A-1	—	—	—
32	INJECTOR 2	—	W34	—	0.5	OEM-A-3	—	—	—
33	INJECTOR 3	—	W35	—	0.5	OEM-A-5	—	—	—
34	INJECTOR 4	—	W36	—	0.5	OEM-A-2	—	—	—
4	Ignition 4	—	W30	—	0.5	OEM-B-6	—	—	—
5	GP out 1 (GND)	—	W39	—	0.5	OEM-A-8	—	—	—
6	GP out 2 (GND)	—	W40	—	0.5	OEM-A-15	—	—	—
7	GP out 3 (GND)	—	W41	—	0.5	OEM-A-18	—	—	—
8	GP out 4 (GND)	—	W42	—	0.5	OEM-A-7	—	—	—
9	Engine gnd	—	W8	—	0.85	SP-GND-1	—	—	—

MAXXECUGEN2R-MX2

Cavity	Function	Signal	Wire	Colour	Gauge (mm²)	Destination	Terminal	Seal	Plug
1	Ignition 5	—	W31	—	0.5	OEM-B-4	—	—	—
10	WBO2 Sensor 1 VS	—	—	—	—	—	—	—	—
11	WBO2 Sensor 1 COM/VREF	—	—	—	—	—	—	—	—
12	GP OUT 7 / WBO2 Sensor 1 H-	—	W45	—	0.5	OEM-A-10	—	—	—
13	AIN 9	—	W66	—	0.5	OEM-C-5	—	—	—
14	AIN 10	—	W67	—	0.5	OEM-C-7	—	—	—
15	AIN 11	—	W68	—	0.5	OEM-C-9	—	—	—
16	AIN 12	—	W69	—	0.5	OEM-D-8	—	—	—
17	AIN 13	—	—	—	—	—	—	—	—
18	WBO2 sensor 1 RCAL	—	—	—	—	—	—	—	—
19	WBO2 sensor 1 IP	—	—	—	—	—	—	—	—
2	Ignition 6	—	W32	—	0.5	OEM-B-3	—	—	—
20	12V WBO2 sensor 1 H+	—	—	—	—	—	—	—	—
21	WBO2 sensor 1 SHIELD	—	—	—	—	—	—	—	—
22	AIN 14	—	—	—	—	—	—	—	—
23	AIN 15	—	—	—	—	—	—	—	—
24	12V supply 3	—	—	—	—	—	—	—	—
25	12V supply 2	—	W4	—	0.85	SP-14V-1	—	—	—
26	KNOCK1 SHIELD	—	—	—	—	—	—	—	—
27	KNOCK 1-	—	—	—	—	—	—	—	—
28	KNOCK 1+	—	W25	—	0.5	OEM-D-4	—	—	—
29	KNOCK 2 SHIELD	—	—	—	—	—	—	—	—
3	GP out 6 (GND)	—	W48	—	0.5	OEM-A-13	—	—	—
30	KNOCK 2-	—	—	—	—	—	—	—	—
31	KNOCK 2+	—	W26	—	0.5	OEM-D-3	—	—	—
32	AIN 16	—	—	—	—	—	—	—	—
33	INJECTOR 5	—	W37	—	0.5	OEM-A-4	—	—	—
34	INJECTOR 6	—	W38	—	0.5	OEM-A-6	—	—	—
4	AIN 6	—	W57	—	0.5	OEM-D-15	—	—	—
5	AIN 7	—	W58	—	0.5	OEM-D-12	—	—	—
6	AIN 8	—	W65	—	0.5	OEM-C-3	—	—	—
7	GP out 13 (H-BRIDGE 1)	—	—	—	—	—	—	—	—
8	GP out 14 (H-BRIDGE 1)	—	—	—	—	—	—	—	—
9	Engine gnd	—	W9	—	0.85	SP-GND-1	—	—	—

MAXXECUGEN2R-MX3

Cavity	Function	Signal	Wire	Colour	Gauge (mm²)	Destination	Terminal	Seal	Plug
1	GP out 15 (H-BRIDGE 2)	—	—	—	—	—	—	—	—
10	WBO2 sensor 2 VS	—	—	—	—	—	—	—	—
11	WBO2 sensor 2 COM/VREF	—	—	—	—	—	—	—	—
12	GP Out 8 (GND) / WBO2 Sensor 2 H-	—	W46	—	0.5	OEM-A-12	—	—	—
13	WBO2 sensor 2 SHIELD	—	—	—	—	—	—	—	—
14	GP OUT 9 (12V)	—	W43	—	0.5	OEM-5-F5	—	—	—
15	GP OUT 10 (12V)	—	W44	—	0.5	OEM-5-F7	—	—	—
16	GP OUT 11 (12V)	—	—	—	—	—	—	—	—
17	GP OUT 12 (12V)	—	—	—	—	—	—	—	—
18	WBO2 sensor 2 RCAL	—	—	—	—	—	—	—	—
19	WBO2 sensor 2 IP	—	—	—	—	—	—	—	—
2	GP out 16 (H-BRIDGE 2)	—	—	—	—	—	—	—	—
20	12V WBO2 sensor 2 (H+)	—	—	—	—	—	—	—	—
21	AIN 17	—	—	—	—	—	—	—	—
22	AIN 18	—	—	—	—	—	—	—	—
23	AIN 19	—	—	—	—	—	—	—	—
24	AIN 20	—	—	—	—	—	—	—	—
25	AIN 21	—	—	—	—	—	—	—	—
26	AIN 22	—	—	—	—	—	—	—	—
27	AIN 23	—	—	—	—	—	—	—	—
28	AIN 24	—	—	—	—	—	—	—	—
29	INJECTOR 7	—	W49	—	0.5	OEM-A-14	—	—	—
3	Ignition 7	—	—	—	—	—	—	—	—
30	INJECTOR 8	—	W50	—	0.5	OEM-A-20	—	—	—
31	INJECTOR 9	—	W51	—	0.5	OEM-A-9	—	—	—
32	INJECTOR 10	—	—	—	—	—	—	—	—
33	INJECTOR 11	—	—	—	—	—	—	—	—
34	INJECTOR 12	—	—	—	—	—	—	—	—
4	Ignition 8	—	—	—	—	—	—	—	—
5	Ignition 9	—	—	—	—	—	—	—	—
6	Ignition 10	—	—	—	—	—	—	—	—
7	Ignition 11	—	—	—	—	—	—	—	—
8	Ignition 12	—	—	—	—	—	—	—	—
9	Engine gnd	—	W10	—	0.85	SP-GND-1	—	—	—

MAXXECUGEN2R-MX4

Cavity	Function	Signal	Wire	Colour	Gauge (mm²)	Destination	Terminal	Seal	Plug
1	Digital/VR 5 SHIELD	—	—	—	—	—	—	—	—
10	EGT 1 +	—	—	—	—	—	—	—	—
11	EGT 2 +	—	—	—	—	—	—	—	—
12	EGT 3 +	—	—	—	—	—	—	—	—
13	EGT 4 +	—	—	—	—	—	—	—	—
14	EGT 5 +	—	—	—	—	—	—	—	—
15	EGT 6 +	—	—	—	—	—	—	—	—
16	EGT 7 +	—	—	—	—	—	—	—	—
17	EGT 8 +	—	—	—	—	—	—	—	—
18	EGT 1 -	—	—	—	—	—	—	—	—
19	EGT 2 -	—	—	—	—	—	—	—	—
2	Digital/VR 5 SIGNAL -	—	—	—	—	—	—	—	—
20	EGT 3 -	—	—	—	—	—	—	—	—
21	EGT 4 -	—	—	—	—	—	—	—	—
22	EGT 5 -	—	—	—	—	—	—	—	—
23	EGT 6 -	—	—	—	—	—	—	—	—
24	EGT 7 -	—	—	—	—	—	—	—	—
25	EGT 8 -	—	—	—	—	—	—	—	—
26	Digital/VR 8 SHIELD	—	—	—	—	—	—	—	—
27	Digital/VR 8 SIGNAL -	—	—	—	—	—	—	—	—
28	Digital/VR 8 SIGNAL +	—	W64	—	0.5	OEM-C-11	—	—	—
29	CAN 2 L	—	—	—	—	—	—	—	—
3	Digital/VR 5 SIGNAL +	—	W61	—	0.5	OEM-5-F2	—	—	—
30	CAN 2 H	—	—	—	—	—	—	—	—
31	INJECTOR 13	—	—	—	—	—	—	—	—
32	INJECTOR 14	—	—	—	—	—	—	—	—
33	INJECTOR 15	—	—	—	—	—	—	—	—
34	INJECTOR 16	—	—	—	—	—	—	—	—
4	Digital/VR 6 SHIELD	—	—	—	—	—	—	—	—
5	Digital/VR 6 SIGNAL -	—	—	—	—	—	—	—	—
6	Digital/VR 6 SIGNAL +	—	W62	—	0.5	OEM-5-F4	—	—	—
7	Digital/VR 7 SHIELD	—	—	—	—	—	—	—	—
8	Digital/VR 7 SIGNAL -	—	—	—	—	—	—	—	—
9	Digital/VR 7 SIGNAL +	—	W63	—	0.5	OEM-B-7	—	—	—

OEM-5

Cavity	Function	Signal	Wire	Colour	Gauge (mm²)	Destination	Terminal	Seal	Plug
F2	Front VTEC pressure switch	—	W61	—	0.5	MAXXECUGEN2R-MX4-3	—	—	—
F4	Rear VTEC pressure switch	—	W62	—	0.5	MAXXECUGEN2R-MX4-6	—	—	—
F5	Front VTEC solenoid valve	—	W43	—	0.5	MAXXECUGEN2R-MX3-14	—	—	—
F7	Rear VTEC solenoid valve	—	W44	—	0.5	MAXXECUGEN2R-MX3-15	—	—	—

OEM-A

Cavity	Function	Signal	Wire	Colour	Gauge (mm²)	Destination	Terminal	Seal	Plug
1	Injector 1	—	W33	—	0.5	MAXXECUGEN2R-MX1-31	—	—	—
10	Front O2 sensor heater (HTCNTF)	—	W45	—	0.5	MAXXECUGEN2R-MX2-12	—	—	—
11	EGR control solenoid	—	W47	—	0.5	MAXXECUGEN2R-MX1-17	—	—	—
12	Rear O2 sensor heater (HTCNTR)	—	W46	—	0.5	MAXXECUGEN2R-MX3-12	—	—	—
13	Check engine light (WARN)	—	W48	—	0.5	MAXXECUGEN2R-MX2-3	—	—	—
14	Chamber volume control solenoid (BPS)	—	W49	—	0.5	MAXXECUGEN2R-MX3-29	—	—	—
15	A/C clutch relay (ACC)	—	W40	—	0.5	MAXXECUGEN2R-MX1-6	—	—	—
18	Radiator fan control (FANCNTR)	—	W41	—	0.5	MAXXECUGEN2R-MX1-7	—	—	—
2	Injector 4	—	W36	—	0.5	MAXXECUGEN2R-MX1-34	—	—	—
20	EVAP purge cut-off solenoid (PGS)	—	W50	—	0.5	MAXXECUGEN2R-MX3-30	—	—	—
21	Ignition coil 1	—	W27	—	0.5	MAXXECUGEN2R-MX1-1	—	—	—
22	Ignition coil 2	—	W28	—	0.5	MAXXECUGEN2R-MX1-2	—	—	—
23	Power ground (PG1)	—	W5	—	0.85	SP-GND-1	—	—	—
24	Power ground (PG2)	—	W6	—	0.85	SP-GND-1	—	—	—
25	ECU power (IGP1)	—	W1	—	0.85	SP-14V-1	—	—	—
26	Sensor ground (LG1)	—	W11	—	0.5	SP-0V-1	—	—	—
3	Injector 2	—	W34	—	0.5	MAXXECUGEN2R-MX1-32	—	—	—
4	Injector 5	—	W37	—	0.5	MAXXECUGEN2R-MX2-33	—	—	—
5	Injector 3	—	W35	—	0.5	MAXXECUGEN2R-MX1-33	—	—	—
6	Injector 6	—	W38	—	0.5	MAXXECUGEN2R-MX2-34	—	—	—
7	Main relay	—	W42	—	0.5	MAXXECUGEN2R-MX1-8	—	—	—
8	Fuel pump relay 2 (FLR2)	—	W39	—	0.5	MAXXECUGEN2R-MX1-5	—	—	—
9	Idle air control valve (IACV)	—	W51	—	0.5	MAXXECUGEN2R-MX3-31	—	—	—

OEM-B

Cavity	Function	Signal	Wire	Colour	Gauge (mm²)	Destination	Terminal	Seal	Plug
10	CYL 2M — CYP sensor 2 return	—	W12	—	0.5	SP-0V-1	—	—	—
11	CYL 1P — CYP sensor 1 signal	—	W24	—	0.5	MAXXECUGEN2R-MX1-18	—	—	—
12	CYL 1M — CYP sensor 1 return	—	W13	—	0.5	SP-0V-1	—	—	—
13	CRNK 2P — TDC sensor signal	—	—	—	—	—	—	—	—
14	CRNK 2M — TDC sensor return	—	W14	—	0.5	SP-0V-1	—	—	—
15	CRNK 1P — crank sensor signal	—	W23	—	0.5	MAXXECUGEN2R-MX1-10	—	—	—
16	CRNK 1M — crank sensor return	—	W15	—	0.5	SP-0V-1	—	—	—
2	Chassis ground (LG2)	—	W7	—	0.85	SP-GND-1	—	—	—
3	Ignition coil 6	—	W32	—	0.5	MAXXECUGEN2R-MX2-2	—	—	—
4	Ignition coil 5	—	W31	—	0.5	MAXXECUGEN2R-MX2-1	—	—	—
6	Ignition coil 4	—	W30	—	0.5	MAXXECUGEN2R-MX1-4	—	—	—
7	Neutral switch (M/T) / gear position (A/T)	—	W63	—	0.5	MAXXECUGEN2R-MX4-9	—	—	—
8	Ignition coil 3	—	W29	—	0.5	MAXXECUGEN2R-MX1-3	—	—	—
9	CYL 2P — CYP sensor 2 signal	—	—	—	—	—	—	—	—

OEM-C

Cavity	Function	Signal	Wire	Colour	Gauge (mm²)	Destination	Terminal	Seal	Plug
1	ECU power (IGP2)	—	W2	—	0.85	SP-14V-1	—	—	—
10	Traction control	—	—	—	—	—	—	—	—
11	Starter switch (STS)	—	W64	—	0.5	MAXXECUGEN2R-MX4-28	—	—	—
12	Traction control	—	—	—	—	—	—	—	—
2	Vehicle speed sensor (VSS)	—	W59	—	0.5	MAXXECUGEN2R-MX1-23	—	—	—
3	A/C switch (ACS)	—	W65	—	0.5	MAXXECUGEN2R-MX2-6	—	—	—
4	Tachometer output (NEP)	—	—	—	—	—	—	—	—
5	A/C pressure switch (PDSW)	—	W66	—	0.5	MAXXECUGEN2R-MX2-13	—	—	—
6	Traction control	—	—	—	—	—	—	—	—
7	Clutch switch (M/T)	—	W67	—	0.5	MAXXECUGEN2R-MX2-14	—	—	—
8	Traction control	—	—	—	—	—	—	—	—
9	Service check connector (SCS)	—	W68	—	0.5	MAXXECUGEN2R-MX2-15	—	—	—

OEM-D

Cavity	Function	Signal	Wire	Colour	Gauge (mm²)	Destination	Terminal	Seal	Plug
1	Battery backup (VBU)	—	—	—	—	—	—	—	—
11	Throttle position sensor (TPS)	—	W53	—	0.5	MAXXECUGEN2R-MX1-27	—	—	—
12	EGR lift sensor (EGRL)	—	W58	—	0.5	MAXXECUGEN2R-MX2-5	—	—	—
13	Engine coolant temperature (ECT)	—	W56	—	0.5	MAXXECUGEN2R-MX1-30	—	—	—
14	Primary O2 sensor	—	W54	—	0.5	MAXXECUGEN2R-MX1-28	—	—	—
15	Intake air temperature (IAT)	—	W57	—	0.5	MAXXECUGEN2R-MX2-4	—	—	—
16	Secondary O2 sensor	—	W55	—	0.5	MAXXECUGEN2R-MX1-29	—	—	—
17	MAP sensor	—	W52	—	0.5	MAXXECUGEN2R-MX1-26	—	—	—
18	+5V sensor supply (VCC)	—	W19	—	0.5	SP-5V1-1	—	—	—
19	+5V sensor supply (VCC)	—	W20	—	0.5	SP-5V1-1	—	—	—
20	+5V sensor supply (VCC)	—	W21	—	0.5	SP-5V1-1	—	—	—
21	Sensor ground (SG)	—	W16	—	0.5	SP-0V-1	—	—	—
22	Sensor ground (SG)	—	W17	—	0.5	SP-0V-1	—	—	—
3	Knock sensor — rear	—	W26	—	0.5	MAXXECUGEN2R-MX2-31	—	—	—
4	Knock sensor — front	—	W25	—	0.5	MAXXECUGEN2R-MX2-28	—	—	—
5	Traction control	—	—	—	—	—	—	—	—
6	Fuel pump voltage monitor (VFP)	—	—	—	—	—	—	—	—
8	Ignition timing adjuster (IGADJ)	—	W69	—	0.5	MAXXECUGEN2R-MX2-16	—	—	—
9	Alternator FR signal	—	W60	—	0.5	MAXXECUGEN2R-MX1-24	—	—	—

SP-0V

Cavity	Function	Signal	Wire	Colour	Gauge (mm²)	Destination	Terminal	Seal	Plug
1	—	—	W11	—	0.5	OEM-A-26	—	—	—
1	—	—	W12	—	0.5	OEM-B-10	—	—	—
1	—	—	W13	—	0.5	OEM-B-12	—	—	—
1	—	—	W14	—	0.5	OEM-B-14	—	—	—
1	—	—	W15	—	0.5	OEM-B-16	—	—	—
1	—	—	W16	—	0.5	OEM-D-21	—	—	—
1	—	—	W17	—	0.5	OEM-D-22	—	—	—
1	—	—	W18	—	0.5	MAXXECUGEN2R-MX1-14	—	—	—

SP-14V

Cavity	Function	Signal	Wire	Colour	Gauge (mm²)	Destination	Terminal	Seal	Plug
1	—	—	W1	—	0.85	OEM-A-25	—	—	—
1	—	—	W2	—	0.85	OEM-C-1	—	—	—
1	—	—	W3	—	0.85	MAXXECUGEN2R-MX1-25	—	—	—
1	—	—	W4	—	0.85	MAXXECUGEN2R-MX2-25	—	—	—

SP-5V1

Cavity	Function	Signal	Wire	Colour	Gauge (mm²)	Destination	Terminal	Seal	Plug
1	—	—	W19	—	0.5	OEM-D-18	—	—	—
1	—	—	W20	—	0.5	OEM-D-19	—	—	—
1	—	—	W21	—	0.5	OEM-D-20	—	—	—
1	—	—	W22	—	0.5	MAXXECUGEN2R-MX1-12	—	—	—

SP-GND

Cavity	Function	Signal	Wire	Colour	Gauge (mm²)	Destination	Terminal	Seal	Plug
1	—	—	W5	—	0.85	OEM-A-23	—	—	—
1	—	—	W6	—	0.85	OEM-A-24	—	—	—
1	—	—	W7	—	0.85	OEM-B-2	—	—	—
1	—	—	W8	—	0.85	MAXXECUGEN2R-MX1-9	—	—	—
1	—	—	W9	—	0.85	MAXXECUGEN2R-MX2-9	—	—	—
1	—	—	W10	—	0.85	MAXXECUGEN2R-MX3-9	—	—	—

Pin map

OEM point	OEM function	OEM family	Target point	Target function	Target family	Evidence
OEM-5-F2	Front VTEC pressure switch	digital_in	MAXXECUGEN2R-MX4-3	Digital/VR 5 SIGNAL +	digital_in	single_source
OEM-5-F4	Rear VTEC pressure switch	digital_in	MAXXECUGEN2R-MX4-6	Digital/VR 6 SIGNAL +	digital_in	single_source
OEM-5-F5	Front VTEC solenoid valve	high_side_out	MAXXECUGEN2R-MX3-14	GP OUT 9 (12V)	high_side_out	single_source
OEM-5-F7	Rear VTEC solenoid valve	high_side_out	MAXXECUGEN2R-MX3-15	GP OUT 10 (12V)	high_side_out	single_source
OEM-A-1	Injector 1	injector_out	MAXXECUGEN2R-MX1-31	INJECTOR 1	injector_out	single_source
OEM-A-10	Front O2 sensor heater (HTCNTF)	low_side_out	MAXXECUGEN2R-MX2-12	GP OUT 7 / WBO2 Sensor 1 H-	low_side_out	single_source
OEM-A-11	EGR control solenoid	low_side_out	MAXXECUGEN2R-MX1-17	GP out 5 (GND)	low_side_out	single_source
OEM-A-12	Rear O2 sensor heater (HTCNTR)	low_side_out	MAXXECUGEN2R-MX3-12	GP Out 8 (GND) / WBO2 Sensor 2 H-	low_side_out	single_source
OEM-A-13	Check engine light (WARN)	low_side_out	MAXXECUGEN2R-MX2-3	GP out 6 (GND)	low_side_out	single_source
OEM-A-14	Chamber volume control solenoid (BPS)	low_side_out	MAXXECUGEN2R-MX3-29	INJECTOR 7	injector_out	single_source
OEM-A-15	A/C clutch relay (ACC)	low_side_out	MAXXECUGEN2R-MX1-6	GP out 2 (GND)	low_side_out	single_source
OEM-A-18	Radiator fan control (FANCNTR)	low_side_out	MAXXECUGEN2R-MX1-7	GP out 3 (GND)	low_side_out	single_source
OEM-A-2	Injector 4	injector_out	MAXXECUGEN2R-MX1-34	INJECTOR 4	injector_out	single_source
OEM-A-20	EVAP purge cut-off solenoid (PGS)	low_side_out	MAXXECUGEN2R-MX3-30	INJECTOR 8	injector_out	single_source
OEM-A-21	Ignition coil 1	ignition_out	MAXXECUGEN2R-MX1-1	Ignition 1	ignition_out	single_source
OEM-A-22	Ignition coil 2	ignition_out	MAXXECUGEN2R-MX1-2	Ignition 2	ignition_out	single_source
OEM-A-23	Power ground (PG1)	ground	MAXXECUGEN2R-MX1-9 + MAXXECUGEN2R-MX2-9 + MAXXECUGEN2R-MX3-9	Engine gnd + Engine gnd + Engine gnd	ground	single_source
OEM-A-24	Power ground (PG2)	ground	MAXXECUGEN2R-MX1-9 + MAXXECUGEN2R-MX2-9 + MAXXECUGEN2R-MX3-9	Engine gnd + Engine gnd + Engine gnd	ground	single_source
OEM-A-25	ECU power (IGP1)	power_in	MAXXECUGEN2R-MX1-25 + MAXXECUGEN2R-MX2-25	12V supply 1 + 12V supply 2	power_in	single_source
OEM-A-26	Sensor ground (LG1)	sensor_ground	MAXXECUGEN2R-MX1-14	SENSOR GND	sensor_ground	single_source
OEM-A-3	Injector 2	injector_out	MAXXECUGEN2R-MX1-32	INJECTOR 2	injector_out	single_source
OEM-A-4	Injector 5	injector_out	MAXXECUGEN2R-MX2-33	INJECTOR 5	injector_out	corroborated
OEM-A-5	Injector 3	injector_out	MAXXECUGEN2R-MX1-33	INJECTOR 3	injector_out	single_source
OEM-A-6	Injector 6	injector_out	MAXXECUGEN2R-MX2-34	INJECTOR 6	injector_out	single_source
OEM-A-7	Main relay	low_side_out	MAXXECUGEN2R-MX1-8	GP out 4 (GND)	low_side_out	single_source
OEM-A-8	Fuel pump relay 2 (FLR2)	low_side_out	MAXXECUGEN2R-MX1-5	GP out 1 (GND)	low_side_out	single_source
OEM-A-9	Idle air control valve (IACV)	low_side_out	MAXXECUGEN2R-MX3-31	INJECTOR 9	injector_out	single_source
OEM-B-10	CYL 2M — CYP sensor 2 return	sensor_ground	MAXXECUGEN2R-MX1-14	SENSOR GND	sensor_ground	single_source
OEM-B-11	CYL 1P — CYP sensor 1 signal	trigger_in	MAXXECUGEN2R-MX1-18	Digital/VR 2 SIGNAL +	trigger_in	single_source
OEM-B-12	CYL 1M — CYP sensor 1 return	sensor_ground	MAXXECUGEN2R-MX1-14	SENSOR GND	sensor_ground	single_source
OEM-B-13	CRNK 2P — TDC sensor signal	trigger_in	—	—	—	single_source
OEM-B-14	CRNK 2M — TDC sensor return	sensor_ground	MAXXECUGEN2R-MX1-14	SENSOR GND	sensor_ground	single_source
OEM-B-15	CRNK 1P — crank sensor signal	trigger_in	MAXXECUGEN2R-MX1-10	Digital/VR 1 SIGNAL +	trigger_in	single_source
OEM-B-16	CRNK 1M — crank sensor return	sensor_ground	MAXXECUGEN2R-MX1-14	SENSOR GND	sensor_ground	single_source
OEM-B-2	Chassis ground (LG2)	ground	MAXXECUGEN2R-MX1-9 + MAXXECUGEN2R-MX2-9 + MAXXECUGEN2R-MX3-9	Engine gnd + Engine gnd + Engine gnd	ground	single_source
OEM-B-3	Ignition coil 6	ignition_out	MAXXECUGEN2R-MX2-2	Ignition 6	ignition_out	single_source
OEM-B-4	Ignition coil 5	ignition_out	MAXXECUGEN2R-MX2-1	Ignition 5	ignition_out	single_source
OEM-B-6	Ignition coil 4	ignition_out	MAXXECUGEN2R-MX1-4	Ignition 4	ignition_out	single_source
OEM-B-7	Neutral switch (M/T) / gear position (A/T)	digital_in	MAXXECUGEN2R-MX4-9	Digital/VR 7 SIGNAL +	digital_in	single_source
OEM-B-8	Ignition coil 3	ignition_out	MAXXECUGEN2R-MX1-3	Ignition 3	ignition_out	single_source
OEM-B-9	CYL 2P — CYP sensor 2 signal	trigger_in	—	—	—	single_source
OEM-C-1	ECU power (IGP2)	power_in	MAXXECUGEN2R-MX1-25 + MAXXECUGEN2R-MX2-25	12V supply 1 + 12V supply 2	power_in	single_source
OEM-C-10	Traction control	—	—	—	—	single_source
OEM-C-11	Starter switch (STS)	digital_in	MAXXECUGEN2R-MX4-28	Digital/VR 8 SIGNAL +	digital_in	single_source
OEM-C-12	Traction control	—	—	—	—	single_source
OEM-C-2	Vehicle speed sensor (VSS)	digital_in	MAXXECUGEN2R-MX1-23	Digital/VR 3 SIGNAL +	digital_in	single_source
OEM-C-3	A/C switch (ACS)	digital_in	MAXXECUGEN2R-MX2-6	AIN 8	analog_in	single_source
OEM-C-4	Tachometer output (NEP)	tacho_out	—	—	—	single_source
OEM-C-5	A/C pressure switch (PDSW)	digital_in	MAXXECUGEN2R-MX2-13	AIN 9	analog_in	single_source
OEM-C-6	Traction control	—	—	—	—	single_source
OEM-C-7	Clutch switch (M/T)	digital_in	MAXXECUGEN2R-MX2-14	AIN 10	analog_in	single_source
OEM-C-8	Traction control	—	—	—	—	single_source
OEM-C-9	Service check connector (SCS)	digital_in	MAXXECUGEN2R-MX2-15	AIN 11	analog_in	single_source
OEM-D-1	Battery backup (VBU)	power_in	—	—	—	single_source
OEM-D-11	Throttle position sensor (TPS)	analog_in	MAXXECUGEN2R-MX1-27	AIN 2	analog_in	single_source
OEM-D-12	EGR lift sensor (EGRL)	analog_in	MAXXECUGEN2R-MX2-5	AIN 7	analog_in	single_source
OEM-D-13	Engine coolant temperature (ECT)	temp_in	MAXXECUGEN2R-MX1-30	AIN 5	analog_in	single_source
OEM-D-14	Primary O2 sensor	lambda_nb_in	MAXXECUGEN2R-MX1-28	AIN 3	analog_in	single_source
OEM-D-15	Intake air temperature (IAT)	temp_in	MAXXECUGEN2R-MX2-4	AIN 6	analog_in	single_source
OEM-D-16	Secondary O2 sensor	lambda_nb_in	MAXXECUGEN2R-MX1-29	AIN 4	analog_in	single_source
OEM-D-17	MAP sensor	analog_in	MAXXECUGEN2R-MX1-26	AIN 1	analog_in	single_source
OEM-D-18	+5V sensor supply (VCC)	vref	MAXXECUGEN2R-MX1-12	Digital/VR 1 POWER SUPPLY	vref	single_source
OEM-D-19	+5V sensor supply (VCC)	vref	MAXXECUGEN2R-MX1-12	Digital/VR 1 POWER SUPPLY	vref	single_source
OEM-D-20	+5V sensor supply (VCC)	vref	MAXXECUGEN2R-MX1-12	Digital/VR 1 POWER SUPPLY	vref	single_source
OEM-D-21	Sensor ground (SG)	sensor_ground	MAXXECUGEN2R-MX1-14	SENSOR GND	sensor_ground	single_source
OEM-D-22	Sensor ground (SG)	sensor_ground	MAXXECUGEN2R-MX1-14	SENSOR GND	sensor_ground	single_source
OEM-D-3	Knock sensor — rear	knock_in	MAXXECUGEN2R-MX2-31	KNOCK 2+	knock_in	single_source
OEM-D-4	Knock sensor — front	knock_in	MAXXECUGEN2R-MX2-28	KNOCK 1+	knock_in	single_source
OEM-D-5	Traction control	—	—	—	—	single_source
OEM-D-6	Fuel pump voltage monitor (VFP)	—	—	—	—	corroborated
OEM-D-8	Ignition timing adjuster (IGADJ)	digital_in	MAXXECUGEN2R-MX2-16	AIN 12	analog_in	single_source
OEM-D-9	Alternator FR signal	digital_in	MAXXECUGEN2R-MX1-24	Digital/VR 4 SIGNAL +	digital_in	single_source

Cut list

Wire	From	To	Gauge (mm²)	Length	Signal	Ident
W1	OEM-A-25	SP-14V-1	0.85	no route	ECU power (IGP1)	—
W2	OEM-C-1	SP-14V-1	0.85	no route	ECU power (IGP2)	—
W3	SP-14V-1	MAXXECUGEN2R-MX1-25	0.85	no route	12V supply 1	—
W4	SP-14V-1	MAXXECUGEN2R-MX2-25	0.85	no route	12V supply 2	—
W5	OEM-A-23	SP-GND-1	0.85	no route	Power ground (PG1)	—
W6	OEM-A-24	SP-GND-1	0.85	no route	Power ground (PG2)	—
W7	OEM-B-2	SP-GND-1	0.85	no route	Chassis ground (LG2)	—
W8	SP-GND-1	MAXXECUGEN2R-MX1-9	0.85	no route	Engine gnd	—
W9	SP-GND-1	MAXXECUGEN2R-MX2-9	0.85	no route	Engine gnd	—
W10	SP-GND-1	MAXXECUGEN2R-MX3-9	0.85	no route	Engine gnd	—
W11	OEM-A-26	SP-0V-1	0.5	no route	Sensor ground (LG1)	—
W12	OEM-B-10	SP-0V-1	0.5	no route	CYL 2M — CYP sensor 2 return	—
W13	OEM-B-12	SP-0V-1	0.5	no route	CYL 1M — CYP sensor 1 return	—
W14	OEM-B-14	SP-0V-1	0.5	no route	CRNK 2M — TDC sensor return	—
W15	OEM-B-16	SP-0V-1	0.5	no route	CRNK 1M — crank sensor return	—
W16	OEM-D-21	SP-0V-1	0.5	no route	Sensor ground (SG)	—
W17	OEM-D-22	SP-0V-1	0.5	no route	Sensor ground (SG)	—
W18	SP-0V-1	MAXXECUGEN2R-MX1-14	0.5	no route	SENSOR GND	—
W19	OEM-D-18	SP-5V1-1	0.5	no route	+5V sensor supply (VCC)	—
W20	OEM-D-19	SP-5V1-1	0.5	no route	+5V sensor supply (VCC)	—
W21	OEM-D-20	SP-5V1-1	0.5	no route	+5V sensor supply (VCC)	—
W22	SP-5V1-1	MAXXECUGEN2R-MX1-12	0.5	no route	Digital/VR 1 POWER SUPPLY	—
W23	OEM-B-15	MAXXECUGEN2R-MX1-10	0.5	no route	CRNK 1P — crank sensor signal	—
W24	OEM-B-11	MAXXECUGEN2R-MX1-18	0.5	no route	CYL 1P — CYP sensor 1 signal	—
W25	OEM-D-4	MAXXECUGEN2R-MX2-28	0.5	no route	Knock sensor — front	—
W26	OEM-D-3	MAXXECUGEN2R-MX2-31	0.5	no route	Knock sensor — rear	—
W27	OEM-A-21	MAXXECUGEN2R-MX1-1	0.5	no route	Ignition coil 1	—
W28	OEM-A-22	MAXXECUGEN2R-MX1-2	0.5	no route	Ignition coil 2	—
W29	OEM-B-8	MAXXECUGEN2R-MX1-3	0.5	no route	Ignition coil 3	—
W30	OEM-B-6	MAXXECUGEN2R-MX1-4	0.5	no route	Ignition coil 4	—
W31	OEM-B-4	MAXXECUGEN2R-MX2-1	0.5	no route	Ignition coil 5	—
W32	OEM-B-3	MAXXECUGEN2R-MX2-2	0.5	no route	Ignition coil 6	—
W33	OEM-A-1	MAXXECUGEN2R-MX1-31	0.5	no route	Injector 1	—
W34	OEM-A-3	MAXXECUGEN2R-MX1-32	0.5	no route	Injector 2	—
W35	OEM-A-5	MAXXECUGEN2R-MX1-33	0.5	no route	Injector 3	—
W36	OEM-A-2	MAXXECUGEN2R-MX1-34	0.5	no route	Injector 4	—
W37	OEM-A-4	MAXXECUGEN2R-MX2-33	0.5	no route	Injector 5	—
W38	OEM-A-6	MAXXECUGEN2R-MX2-34	0.5	no route	Injector 6	—
W39	OEM-A-8	MAXXECUGEN2R-MX1-5	0.5	no route	Fuel pump relay 2 (FLR2)	—
W40	OEM-A-15	MAXXECUGEN2R-MX1-6	0.5	no route	A/C clutch relay (ACC)	—
W41	OEM-A-18	MAXXECUGEN2R-MX1-7	0.5	no route	Radiator fan control (FANCNTR)	—
W42	OEM-A-7	MAXXECUGEN2R-MX1-8	0.5	no route	Main relay	—
W43	OEM-5-F5	MAXXECUGEN2R-MX3-14	0.5	no route	Front VTEC solenoid valve	—
W44	OEM-5-F7	MAXXECUGEN2R-MX3-15	0.5	no route	Rear VTEC solenoid valve	—
W45	OEM-A-10	MAXXECUGEN2R-MX2-12	0.5	no route	Front O2 sensor heater (HTCNTF)	—
W46	OEM-A-12	MAXXECUGEN2R-MX3-12	0.5	no route	Rear O2 sensor heater (HTCNTR)	—
W47	OEM-A-11	MAXXECUGEN2R-MX1-17	0.5	no route	EGR control solenoid	—
W48	OEM-A-13	MAXXECUGEN2R-MX2-3	0.5	no route	Check engine light (WARN)	—
W49	OEM-A-14	MAXXECUGEN2R-MX3-29	0.5	no route	Chamber volume control solenoid (BPS)	—
W50	OEM-A-20	MAXXECUGEN2R-MX3-30	0.5	no route	EVAP purge cut-off solenoid (PGS)	—
W51	OEM-A-9	MAXXECUGEN2R-MX3-31	0.5	no route	Idle air control valve (IACV)	—
W52	OEM-D-17	MAXXECUGEN2R-MX1-26	0.5	no route	MAP sensor	—
W53	OEM-D-11	MAXXECUGEN2R-MX1-27	0.5	no route	Throttle position sensor (TPS)	—
W54	OEM-D-14	MAXXECUGEN2R-MX1-28	0.5	no route	Primary O2 sensor	—
W55	OEM-D-16	MAXXECUGEN2R-MX1-29	0.5	no route	Secondary O2 sensor	—
W56	OEM-D-13	MAXXECUGEN2R-MX1-30	0.5	no route	Engine coolant temperature (ECT)	—
W57	OEM-D-15	MAXXECUGEN2R-MX2-4	0.5	no route	Intake air temperature (IAT)	—
W58	OEM-D-12	MAXXECUGEN2R-MX2-5	0.5	no route	EGR lift sensor (EGRL)	—
W59	OEM-C-2	MAXXECUGEN2R-MX1-23	0.5	no route	Vehicle speed sensor (VSS)	—
W60	OEM-D-9	MAXXECUGEN2R-MX1-24	0.5	no route	Alternator FR signal	—
W61	OEM-5-F2	MAXXECUGEN2R-MX4-3	0.5	no route	Front VTEC pressure switch	—
W62	OEM-5-F4	MAXXECUGEN2R-MX4-6	0.5	no route	Rear VTEC pressure switch	—
W63	OEM-B-7	MAXXECUGEN2R-MX4-9	0.5	no route	Neutral switch (M/T) / gear position (A/T)	—
W64	OEM-C-11	MAXXECUGEN2R-MX4-28	0.5	no route	Starter switch (STS)	—
W65	OEM-C-3	MAXXECUGEN2R-MX2-6	0.5	no route	A/C switch (ACS)	—
W66	OEM-C-5	MAXXECUGEN2R-MX2-13	0.5	no route	A/C pressure switch (PDSW)	—
W67	OEM-C-7	MAXXECUGEN2R-MX2-14	0.5	no route	Clutch switch (M/T)	—
W68	OEM-C-9	MAXXECUGEN2R-MX2-15	0.5	no route	Service check connector (SCS)	—
W69	OEM-D-8	MAXXECUGEN2R-MX2-16	0.5	no route	Ignition timing adjuster (IGADJ)	—

Bill of materials

Category	Part number	Manufacturer	Description	Qty	Unit

ECU setup sheet

Role	Engine ref	Engine signal	Sensor	ECU point	ECU function	ECU class	Setup flag
No configured channels.

Findings

Open (11)

Severity	Code	Subject	Message
warn	NET_FAMILY	OEM-C-3 ↔ MAXXECUGEN2R-MX2-6	OEM-C-3 "A/C switch (ACS)" [digital_in] is wired to MAXXECUGEN2R-MX2-6 "AIN 8" [analog_in]. Analog and digital on one net. A switch on an analog input works with a pull-up and a threshold; an analog sensor on a digital input loses its value.
warn	NET_FAMILY	OEM-C-5 ↔ MAXXECUGEN2R-MX2-13	OEM-C-5 "A/C pressure switch (PDSW)" [digital_in] is wired to MAXXECUGEN2R-MX2-13 "AIN 9" [analog_in]. Analog and digital on one net. A switch on an analog input works with a pull-up and a threshold; an analog sensor on a digital input loses its value.
warn	NET_FAMILY	OEM-C-7 ↔ MAXXECUGEN2R-MX2-14	OEM-C-7 "Clutch switch (M/T)" [digital_in] is wired to MAXXECUGEN2R-MX2-14 "AIN 10" [analog_in]. Analog and digital on one net. A switch on an analog input works with a pull-up and a threshold; an analog sensor on a digital input loses its value.
warn	NET_FAMILY	OEM-C-9 ↔ MAXXECUGEN2R-MX2-15	OEM-C-9 "Service check connector (SCS)" [digital_in] is wired to MAXXECUGEN2R-MX2-15 "AIN 11" [analog_in]. Analog and digital on one net. A switch on an analog input works with a pull-up and a threshold; an analog sensor on a digital input loses its value.
warn	NET_FAMILY	OEM-D-8 ↔ MAXXECUGEN2R-MX2-16	OEM-D-8 "Ignition timing adjuster (IGADJ)" [digital_in] is wired to MAXXECUGEN2R-MX2-16 "AIN 12" [analog_in]. Analog and digital on one net. A switch on an analog input works with a pull-up and a threshold; an analog sensor on a digital input loses its value.
info	NET_FAMILY	OEM-A-14 ↔ MAXXECUGEN2R-MX3-29	OEM-A-14 "Chamber volume control solenoid (BPS)" [low_side_out] is wired to MAXXECUGEN2R-MX3-29 "INJECTOR 7" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency.
info	NET_FAMILY	OEM-A-20 ↔ MAXXECUGEN2R-MX3-30	OEM-A-20 "EVAP purge cut-off solenoid (PGS)" [low_side_out] is wired to MAXXECUGEN2R-MX3-30 "INJECTOR 8" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency.
info	NET_FAMILY	OEM-A-9 ↔ MAXXECUGEN2R-MX3-31	OEM-A-9 "Idle air control valve (IACV)" [low_side_out] is wired to MAXXECUGEN2R-MX3-31 "INJECTOR 9" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency.
info	NET_FAMILY	OEM-D-13 ↔ MAXXECUGEN2R-MX1-30	OEM-D-13 "Engine coolant temperature (ECT)" [temp_in] is wired to MAXXECUGEN2R-MX1-30 "AIN 5" [analog_in]. Thermistor on a plain analog input needs a pull-up; check the channel can enable one.
info	NET_FAMILY	OEM-D-15 ↔ MAXXECUGEN2R-MX2-4	OEM-D-15 "Intake air temperature (IAT)" [temp_in] is wired to MAXXECUGEN2R-MX2-4 "AIN 6" [analog_in]. Thermistor on a plain analog input needs a pull-up; check the channel can enable one.
info	UNMAPPED	OEM	9 optional OEM pins are not mapped: OEM-B-13 CRNK 2P — TDC sensor signal; OEM-B-9 CYL 2P — CYP sensor 2 signal; OEM-C-10 Traction control; OEM-C-12 Traction control; OEM-C-4 Tachometer output (NEP); OEM-C-6 Traction control; OEM-C-8 Traction control; OEM-D-5 Traction control; OEM-D-6 Fuel pump voltage monitor (VFP)

Accepted (1)

Code	Subject	Reason	By
REQUIRED_UNMAPPED	OEM-D-1	Battery-constant (memory) feed of the stock ECU: the new ECU has no such input, so it is not needed.	mapping-proposal

Notes

Fit check: unconfirmed. Confirm these before building: - Trigger pattern for Honda C30A not found in the ECU's docs (MaxxECU trigger list has no C30A/C32B/NSX (Honda K20/K20A2/K20Z4/F20C only)) Auto-mapped by auto_map() from the library pin data on 2026-10-06. Review every wire against both manuals before building. Not wired: - OEM-D 1: Battery backup (VBU): MaxxECU MaxxECU GEN2 RACE has no battery-constant input; not needed - OEM-B 13: CRNK 2P — TDC sensor signal: no free crank_vr/frequency_in input on MaxxECU MaxxECU GEN2 RACE - OEM-B 9: CYL 2P — CYP sensor 2 signal: no free cam_vr/cam_hall/frequency_in input on MaxxECU MaxxECU GEN2 RACE - OEM-C 4: Tachometer output (NEP): no free tacho/frequency_out/low_side/ls_hs on MaxxECU MaxxECU GEN2 RACE - OEM-C 10: Traction control: not classified in the library; wire by hand - OEM-C 12: Traction control: not classified in the library; wire by hand - OEM-C 6: Traction control: not classified in the library; wire by hand - OEM-C 8: Traction control: not classified in the library; wire by hand - OEM-D 5: Traction control: not classified in the library; wire by hand - OEM-D 6: Fuel pump voltage monitor (VFP): not classified in the library; wire by hand - MAXXECUGEN2R-MX2 24: 12V supply 3: not fed (the stock ECU has no ignition-sense pin); feed it from a switched-ignition source

Sources

Reliability	Kind	Title	URL	Archive	Captured	SHA-256
4	vendor_doc	AEM EMS 30-1042 (Series 1) plug-and-play install manual — 1991-94 NSX	https://fancy-craft.firebaseapp.com/NSX/report/ecu/EMS_-_30-1042.pdf	archive	2026-10-05	0cad10bc64b5
4	vendor_doc	MaxxECU GEN2 pinout (RACE MX1–MX4 / TRACK MX1–MX3)	http://www.maxxecu.com/webhelp/wirings-maxxecu_gen2_pinout.html	archive	2026-10-05	f689b8b6b08f
3	vendor_doc	dodo-upgrades: Honda OBD1 V6 ECU pinout	https://dodo-upgrades.nl/index.php/obd1-v6-pinouts/	archive	2026-10-05	f9539af28904