Chevrolet Camaro SS 2010-15 (LS3/L99) → MaxxECU MaxxECU RACE REV9+ (auto)

Chevrolet Camaro SS 2010-15 (LS3/L99) — MaxxECU — MaxxECU RACE

⚠ NOT CHECKED. Don't build from this.

Drawn by Michael Gnankou · Rev 0 · draft · 2026-10-11

Before you start

Not confident with automotive wiring? Have a professional harness builder or tuner do it, or check your work before first power-up. A wiring mistake can damage the ECU, the engine or the car, or start a fire.

Status	draft · not yet verified: nobody has reported building and running this harness
Open errors	2: read the Findings page before cutting any wire
Size of the job	80 wires · 8 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-X1-19	SP-14V-1	0.85	☐	☐	☐	☐	☐	☐	☐
W2	OEM-X1-47	SP-14V-1	0.85	☐	☐	☐	☐	☐	☐	☐
W3	SP-14V-1	MAXXECURACE-C1-M4	0.85	☐	☐	☐	☐	☐	☐	☐
W4	OEM-X1-73	SP-GND-1	0.85	☐	☐	☐	☐	☐	☐	☐
W5	OEM-X2-78	SP-GND-1	0.85	☐	☐	☐	☐	☐	☐	☐
W6	OEM-X2-79	SP-GND-1	0.85	☐	☐	☐	☐	☐	☐	☐
W7	SP-GND-1	MAXXECURACE-C1-L4	0.85	☐	☐	☐	☐	☐	☐	☐
W8	SP-GND-1	MAXXECURACE-C2-G4	0.85	☐	☐	☐	☐	☐	☐	☐
W9	OEM-X1-11	SP-0V-1	0.5	☐	☐	☐	☐	☐	☐	☐
W10	OEM-X1-13	SP-0V-1	0.5	☐	☐	☐	☐	☐	☐	☐
W11	OEM-X1-23	SP-0V-1	0.5	☐	☐	☐	☐	☐	☐	☐
W12	OEM-X1-30	SP-0V-1	0.5	☐	☐	☐	☐	☐	☐	☐
W13	OEM-X1-31	SP-0V-1	0.5	☐	☐	☐	☐	☐	☐	☐
W14	OEM-X1-38	SP-0V-1	0.5	☐	☐	☐	☐	☐	☐	☐
W15	OEM-X1-49	SP-0V-1	0.5	☐	☐	☐	☐	☐	☐	☐
W16	OEM-X2-22	SP-0V-1	0.5	☐	☐	☐	☐	☐	☐	☐
W17	OEM-X2-34	SP-0V-1	0.5	☐	☐	☐	☐	☐	☐	☐
W18	OEM-X2-35	SP-0V-1	0.5	☐	☐	☐	☐	☐	☐	☐
W19	OEM-X2-52	SP-0V-1	0.5	☐	☐	☐	☐	☐	☐	☐
W20	OEM-X2-53	SP-0V-1	0.5	☐	☐	☐	☐	☐	☐	☐
W21	OEM-X2-56	SP-0V-1	0.5	☐	☐	☐	☐	☐	☐	☐
W22	OEM-X2-60	SP-0V-1	0.5	☐	☐	☐	☐	☐	☐	☐
W23	OEM-X2-66	SP-0V-1	0.5	☐	☐	☐	☐	☐	☐	☐
W24	OEM-X2-69	SP-0V-1	0.5	☐	☐	☐	☐	☐	☐	☐
W25	SP-0V-1	MAXXECURACE-C1-H1	0.5	☐	☐	☐	☐	☐	☐	☐
W26	SP-0V-1	MAXXECURACE-C1-H2	0.5	☐	☐	☐	☐	☐	☐	☐
W27	OEM-X1-33	SP-5V1-1	0.5	☐	☐	☐	☐	☐	☐	☐
W28	OEM-X1-34	SP-5V1-1	0.5	☐	☐	☐	☐	☐	☐	☐
W29	OEM-X1-36	SP-5V1-1	0.5	☐	☐	☐	☐	☐	☐	☐
W30	OEM-X1-56	SP-5V1-1	0.5	☐	☐	☐	☐	☐	☐	☐
W31	OEM-X2-2	SP-5V1-1	0.5	☐	☐	☐	☐	☐	☐	☐
W32	OEM-X2-3	SP-5V1-1	0.5	☐	☐	☐	☐	☐	☐	☐
W33	OEM-X2-41	SP-5V1-1	0.5	☐	☐	☐	☐	☐	☐	☐
W34	OEM-X2-43	SP-5V1-1	0.5	☐	☐	☐	☐	☐	☐	☐
W35	OEM-X2-44	SP-5V1-1	0.5	☐	☐	☐	☐	☐	☐	☐
W36	SP-5V1-1	MAXXECURACE-C1-G1	0.5	☐	☐	☐	☐	☐	☐	☐
W37	OEM-X2-68	MAXXECURACE-C1-H3	0.5	☐	☐	☐	☐	☐	☐	☐
W38	OEM-X2-64	MAXXECURACE-C1-H4	0.5	☐	☐	☐	☐	☐	☐	☐
W39	OEM-X2-26	MAXXECURACE-C2-E2	0.5	☐	☐	☐	☐	☐	☐	☐
W40	OEM-X2-27	MAXXECURACE-C2-E3	0.5	☐	☐	☐	☐	☐	☐	☐
W41	OEM-X2-70	MAXXECURACE-C1-A2	0.5	☐	☐	☐	☐	☐	☐	☐
W42	OEM-X2-73	MAXXECURACE-C1-A3	0.5	☐	☐	☐	☐	☐	☐	☐
W43	OEM-X2-77	MAXXECURACE-C1-B2	0.5	☐	☐	☐	☐	☐	☐	☐
W44	OEM-X2-76	MAXXECURACE-C1-B3	0.5	☐	☐	☐	☐	☐	☐	☐
W45	OEM-X2-75	MAXXECURACE-C1-C2	0.5	☐	☐	☐	☐	☐	☐	☐
W46	OEM-X2-74	MAXXECURACE-C1-C3	0.5	☐	☐	☐	☐	☐	☐	☐
W47	OEM-X2-72	MAXXECURACE-C1-D2	0.5	☐	☐	☐	☐	☐	☐	☐
W48	OEM-X2-71	MAXXECURACE-C1-D3	0.5	☐	☐	☐	☐	☐	☐	☐
W49	OEM-X2-20	MAXXECURACE-C1-K1	0.5	☐	☐	☐	☐	☐	☐	☐
W50	OEM-X2-37	MAXXECURACE-C1-K2	0.5	☐	☐	☐	☐	☐	☐	☐
W51	OEM-X2-38	MAXXECURACE-C1-M1	0.5	☐	☐	☐	☐	☐	☐	☐
W52	OEM-X2-39	MAXXECURACE-C1-M2	0.5	☐	☐	☐	☐	☐	☐	☐
W53	OEM-X2-18	MAXXECURACE-C1-M3	0.5	☐	☐	☐	☐	☐	☐	☐
W54	OEM-X2-19	MAXXECURACE-C1-L3	0.5	☐	☐	☐	☐	☐	☐	☐
W55	OEM-X2-40	MAXXECURACE-C1-L2	0.5	☐	☐	☐	☐	☐	☐	☐
W56	OEM-X2-17	MAXXECURACE-C1-L1	0.5	☐	☐	☐	☐	☐	☐	☐
W57	OEM-X1-50	MAXXECURACE-C1-B4	0.5	☐	☐	☐	☐	☐	☐	☐
W58	OEM-X1-59	MAXXECURACE-C1-C4	0.5	☐	☐	☐	☐	☐	☐	☐
W59	OEM-X1-41	MAXXECURACE-C1-J3	0.5	☐	☐	☐	☐	☐	☐	☐
W60	OEM-X2-58	MAXXECURACE-C1-J4	0.5	☐	☐	☐	☐	☐	☐	☐
W61	OEM-X1-29	MAXXECURACE-C1-G2	0.5	☐	☐	☐	☐	☐	☐	☐
W62	OEM-X2-65	MAXXECURACE-C2-G3	0.5	☐	☐	☐	☐	☐	☐	☐
W63	OEM-X1-32	MAXXECURACE-C2-E4	0.5	☐	☐	☐	☐	☐	☐	☐
W64	OEM-X2-63	MAXXECURACE-C2-F1	0.5	☐	☐	☐	☐	☐	☐	☐
W65	OEM-X2-21	MAXXECURACE-C1-F1	0.5	☐	☐	☐	☐	☐	☐	☐
W66	OEM-X1-17	MAXXECURACE-C1-D4	0.5	☐	☐	☐	☐	☐	☐	☐
W67	OEM-X1-51	MAXXECURACE-C1-E4	0.5	☐	☐	☐	☐	☐	☐	☐
W68	OEM-X1-52	MAXXECURACE-C1-A1	0.5	☐	☐	☐	☐	☐	☐	☐
W69	OEM-X1-58	MAXXECURACE-C1-B1	0.5	☐	☐	☐	☐	☐	☐	☐
W70	OEM-X1-63	MAXXECURACE-C1-C1	0.5	☐	☐	☐	☐	☐	☐	☐
W71	OEM-X1-64	MAXXECURACE-C1-D1	0.5	☐	☐	☐	☐	☐	☐	☐
W72	OEM-X1-65	MAXXECURACE-C1-A4	0.5	☐	☐	☐	☐	☐	☐	☐
W73	OEM-X1-10	MAXXECURACE-C2-F2	0.5	☐	☐	☐	☐	☐	☐	☐
W74	OEM-X1-37	MAXXECURACE-C1-F2	0.5	☐	☐	☐	☐	☐	☐	☐
W75	OEM-X1-71	MAXXECURACE-C1-K3	0.5	☐	☐	☐	☐	☐	☐	☐
W76	OEM-X1-72	MAXXECURACE-C1-K4	0.5	☐	☐	☐	☐	☐	☐	☐
W77	OEM-X1-2	MAXXECURACE-C2-F3	0.5	☐	☐	☐	☐	☐	☐	☐
W78	OEM-X1-1	MAXXECURACE-C2-F4	0.5	☐	☐	☐	☐	☐	☐	☐
W79	OEM-X1-28	MAXXECURACE-C1-E1	0.5	☐	☐	☐	☐	☐	☐	☐
W80	OEM-X1-27	MAXXECURACE-C1-E2	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	MAXXECURACE-C1-G1	MAXXECURACE-C1-L4	open (OL)	5 V sensor reference must not touch power ground
2	MAXXECURACE-C1-M4	MAXXECURACE-C1-L4	open (OL)	+12 V supply must not touch power ground
3	MAXXECURACE-C1-H1	MAXXECURACE-C1-G1	open (OL)	sensor ground must not touch 5 V sensor reference
4	MAXXECURACE-C1-H1	MAXXECURACE-C1-M4	open (OL)	sensor ground must not touch +12 V supply
5	MAXXECURACE-C1-M4	MAXXECURACE-C1-G1	open (OL)	+12 V supply must not touch 5 V sensor reference

If any reading doesn't match, stop and get help before powering up.

Revisions

Rev	Label	By	Date
No revisions yet.

Schematic

Connectors

MAXXECURACE-C1

Cavity	Function	Signal	Wire	Colour	Gauge (mm²)	Destination	Terminal	Seal	Plug
A1	GPO 5	—	W68	—	0.5	OEM-X1-52	—	—	—
A2	IGN 1	—	W41	—	0.5	OEM-X2-70	—	—	—
A3	IGN 2	—	W42	—	0.5	OEM-X2-73	—	—	—
A4	GPO 8/TACHO	—	W72	—	0.5	OEM-X1-65	—	—	—
B1	GPO 6	—	W69	—	0.5	OEM-X1-58	—	—	—
B2	IGN 3	—	W43	—	0.5	OEM-X2-77	—	—	—
B3	IGN 4	—	W44	—	0.5	OEM-X2-76	—	—	—
B4	GPO 1	—	W57	—	0.5	OEM-X1-50	—	—	—
C1	GPO 7	—	W70	—	0.5	OEM-X1-63	—	—	—
C2	IGN 5	—	W45	—	0.5	OEM-X2-75	—	—	—
C3	IGN 6	—	W46	—	0.5	OEM-X2-74	—	—	—
C4	GPO 2	—	W58	—	0.5	OEM-X1-59	—	—	—
D1	WBO2 Heater-	—	W71	—	0.5	OEM-X1-64	—	—	—
D2	IGN 7	—	W47	—	0.5	OEM-X2-72	—	—	—
D3	IGN 8	—	W48	—	0.5	OEM-X2-71	—	—	—
D4	GPO 3	—	W66	—	0.5	OEM-X1-17	—	—	—
E1	CAN H	—	W79	—	0.5	OEM-X1-28	—	—	—
E2	CAN L	—	W80	—	0.5	OEM-X1-27	—	—	—
E3	GND Shield	—	—	—	—	—	—	—	—
E4	GPO 4	—	W67	—	0.5	OEM-X1-51	—	—	—
F1	CLT	—	W65	—	0.5	OEM-X2-21	—	—	—
F2	IAT	—	W74	—	0.5	OEM-X1-37	—	—	—
F3	WBO2 VREF	—	—	—	—	—	—	—	—
F4	WBO2 VS	—	—	—	—	—	—	—	—
G1	+5V sensor supply	—	W36	—	0.5	SP-5V1-1	—	—	—
G2	TPS/AIN	—	W61	—	0.5	OEM-X1-29	—	—	—
G3	WBO2 IP	—	—	—	—	—	—	—	—
G4	WBO2 RCAL	—	—	—	—	—	—	—	—
H1	Sensor GND	—	W25	—	0.5	SP-0V-1	—	—	—
H2	Trigger GND	—	W26	—	0.5	SP-0V-1	—	—	—
H3	TRIGGER	—	W37	—	0.5	OEM-X2-68	—	—	—
H4	HOME	—	W38	—	0.5	OEM-X2-64	—	—	—
J1	AIN 1 (temperature)	—	—	—	—	—	—	—	—
J2	AIN 2 (temperature)	—	—	—	—	—	—	—	—
J3	AIN 3 (0-5V)	—	W59	—	0.5	OEM-X1-41	—	—	—
J4	AIN 4 (0-5V)	—	W60	—	0.5	OEM-X2-58	—	—	—
K1	INJ 1	—	W49	—	0.5	OEM-X2-20	—	—	—
K2	INJ 2	—	W50	—	0.5	OEM-X2-37	—	—	—
K3	DIN/VR 1	—	W75	—	0.5	OEM-X1-71	—	—	—
K4	DIN/VR 2	—	W76	—	0.5	OEM-X1-72	—	—	—
L1	INJ 8	—	W56	—	0.5	OEM-X2-17	—	—	—
L2	INJ 7	—	W55	—	0.5	OEM-X2-40	—	—	—
L3	INJ 6	—	W54	—	0.5	OEM-X2-19	—	—	—
L4	Engine GND	—	W7	—	0.85	SP-GND-1	—	—	—
M1	INJ 3	—	W51	—	0.5	OEM-X2-38	—	—	—
M2	INJ 4	—	W52	—	0.5	OEM-X2-39	—	—	—
M3	INJ 5	—	W53	—	0.5	OEM-X2-18	—	—	—
M4	+12V ECU power supply	—	W3	—	0.85	SP-14V-1	—	—	—

MAXXECURACE-C2

Cavity	Function	Signal	Wire	Colour	Gauge (mm²)	Destination	Terminal	Seal	Plug
A1	EGT 5+	—	—	—	—	—	—	—	—
A2	EGT 6+	—	—	—	—	—	—	—	—
A3	EGT 7+	—	—	—	—	—	—	—	—
A4	EGT 8+	—	—	—	—	—	—	—	—
B1	EGT 5-	—	—	—	—	—	—	—	—
B2	EGT 6-	—	—	—	—	—	—	—	—
B3	EGT 7-	—	—	—	—	—	—	—	—
B4	EGT 8-	—	—	—	—	—	—	—	—
C1	EGT 1+	—	—	—	—	—	—	—	—
C2	EGT 2+	—	—	—	—	—	—	—	—
C3	EGT 3+	—	—	—	—	—	—	—	—
C4	EGT 4+	—	—	—	—	—	—	—	—
D1	EGT 1-	—	—	—	—	—	—	—	—
D2	EGT 2-	—	—	—	—	—	—	—	—
D3	EGT 3-	—	—	—	—	—	—	—	—
D4	EGT 4-	—	—	—	—	—	—	—	—
E1	KNOCK GND	—	—	—	—	—	—	—	—
E2	Knock 1	—	W39	—	0.5	OEM-X2-26	—	—	—
E3	Knock 2	—	W40	—	0.5	OEM-X2-27	—	—	—
E4	AIN 6 (0-5V)	—	W63	—	0.5	OEM-X1-32	—	—	—
F1	AIN 7 (0-5V)	—	W64	—	0.5	OEM-X2-63	—	—	—
F2	AIN 8 (0-5V)	—	W73	—	0.5	OEM-X1-10	—	—	—
F3	DIN/VR 4	—	W77	—	0.5	OEM-X1-2	—	—	—
F4	DIN/VR 5	—	W78	—	0.5	OEM-X1-1	—	—	—
G1	GPO 15 (+12V)	—	—	—	—	—	—	—	—
G2	GPO 16 (+12V)	—	—	—	—	—	—	—	—
G3	AIN 5 (0-5V)	—	W62	—	0.5	OEM-X2-65	—	—	—
G4	ENGINE GROUND	—	W8	—	0.85	SP-GND-1	—	—	—
H1	MOTOR 2+	—	—	—	—	—	—	—	—
H2	MOTOR 1-	—	—	—	—	—	—	—	—
H3	MOTOR 2-	—	—	—	—	—	—	—	—
H4	MOTOR 1+	—	—	—	—	—	—	—	—

OEM-X1

Cavity	Function	Signal	Wire	Colour	Gauge (mm²)	Destination	Terminal	Seal	Plug
1	Park/Neutral signal (1786)	—	W78	—	0.5	MAXXECURACE-C2-F4	—	—	—
10	HO2S signal, bank 1 sensor 2 (post-cat)	—	W73	—	0.5	MAXXECURACE-C2-F2	—	—	—
11	HO2S low reference, bank 1 sensor 2	—	W9	—	0.5	SP-0V-1	—	—	—
12	A/C refrigerant pressure signal	—	—	—	—	—	—	—	—
13	A/C refrigerant pressure sensor low reference (5514)	—	W10	—	0.5	SP-0V-1	—	—	—
16	Fuel level sensor signal, primary (1589)	—	—	—	—	—	—	—	—
17	High speed cooling fan relay	—	W66	—	0.5	MAXXECURACE-C1-D4	—	—	—
18	Accessory wakeup serial data (5985)	—	—	—	—	—	—	—	—
19	Ignition 1 voltage (key hot)	—	W1	—	0.85	SP-14V-1	—	—	—
2	4WD low signal (1694)	—	W77	—	0.5	MAXXECURACE-C2-F3	—	—	—
20	Battery positive voltage (batt hot)	—	—	—	—	—	—	—	—
23	APP sensor low reference	—	W11	—	0.5	SP-0V-1	—	—	—
24	Fuel tank pressure signal	—	—	—	—	—	—	—	—
27	High-speed GMLAN serial data bus - (2501)	—	W80	—	0.5	MAXXECURACE-C1-E2	—	—	—
28	High-speed GMLAN serial data bus + (2500)	—	W79	—	0.5	MAXXECURACE-C1-E1	—	—	—
29	Accelerator pedal position (APP) sensor 1 signal	—	W61	—	0.5	MAXXECURACE-C1-G2	—	—	—
3	Axle switch signal (1695)	—	—	—	—	—	—	—	—
30	APP sensor low reference	—	W12	—	0.5	SP-0V-1	—	—	—
31	Fuel tank pressure sensor low reference (6049)	—	W13	—	0.5	SP-0V-1	—	—	—
32	Accelerator pedal position (APP) sensor 2 signal	—	W63	—	0.5	MAXXECURACE-C2-E4	—	—	—
33	5V reference (fuel tank pressure)	—	W27	—	0.5	SP-5V1-1	—	—	—
34	5V reference (A/C pressure)	—	W28	—	0.5	SP-5V1-1	—	—	—
36	5V reference (APP sensor)	—	W29	—	0.5	SP-5V1-1	—	—	—
37	Intake air temperature (IAT) signal	—	W74	—	0.5	MAXXECURACE-C1-F2	—	—	—
38	Intake air temperature (IAT) low reference	—	W14	—	0.5	SP-0V-1	—	—	—
41	Mass air flow (MAF) signal	—	W59	—	0.5	MAXXECURACE-C1-J3	—	—	—
47	Ignition 1 voltage (key hot)	—	W2	—	0.85	SP-14V-1	—	—	—
48	Tachometer output	—	—	—	—	—	—	—	—
49	HO2S low reference, bank 2 sensor 2	—	W15	—	0.5	SP-0V-1	—	—	—
50	Fuel pump relay control (primary)	—	W57	—	0.5	MAXXECURACE-C1-B4	—	—	—
51	Fuel pump relay control (secondary)	—	W67	—	0.5	MAXXECURACE-C1-E4	—	—	—
52	Starter enable relay control	—	W68	—	0.5	MAXXECURACE-C1-A1	—	—	—
56	5V reference (APP sensor)	—	W30	—	0.5	SP-5V1-1	—	—	—
57	VSS output to ABS (128k)	—	—	—	—	—	—	—	—
58	Low speed cooling fan relay	—	W69	—	0.5	MAXXECURACE-C1-B1	—	—	—
59	Powertrain relay coil control (main relay)	—	W58	—	0.5	MAXXECURACE-C1-C4	—	—	—
61	EVAP canister vent solenoid	—	—	—	—	—	—	—	—
63	A/C compressor clutch relay	—	W70	—	0.5	MAXXECURACE-C1-C1	—	—	—
64	HO2S heater low control, bank 2 sensor 2	—	W71	—	0.5	MAXXECURACE-C1-D1	—	—	—
65	HO2S heater low control, bank 1 sensor 2	—	W72	—	0.5	MAXXECURACE-C1-A4	—	—	—
68	Malfunction indicator lamp (MIL)	—	—	—	—	—	—	—	—
69	HO2S signal, bank 2 sensor 2 (post-cat)	—	—	—	—	—	—	—	—
70	Secondary fuel level sensor signal (1937)	—	—	—	—	—	—	—	—
71	VSS high signal (manual trans)	—	W75	—	0.5	MAXXECURACE-C1-K3	—	—	—
72	VSS low signal (manual trans)	—	W76	—	0.5	MAXXECURACE-C1-K4	—	—	—
73	Power ground	—	W4	—	0.85	SP-GND-1	—	—	—
9	Brake switch signal	—	—	—	—	—	—	—	—

OEM-X2

Cavity	Function	Signal	Wire	Colour	Gauge (mm²)	Destination	Terminal	Seal	Plug
10	Cylinder shutoff solenoid 1 (AFM)	—	—	—	—	—	—	—	—
11	Cylinder shutoff solenoid 4 (AFM)	—	—	—	—	—	—	—	—
12	HO2S heater low control, bank 1 sensor 1	—	—	—	—	—	—	—	—
13	HO2S heater low control, bank 2 sensor 1	—	—	—	—	—	—	—	—
14	Cylinder shutoff solenoid 2 (AFM)	—	—	—	—	—	—	—	—
16	Camshaft actuator solenoid (VVT)	—	—	—	—	—	—	—	—
17	Injector 8	—	W56	—	0.5	MAXXECURACE-C1-L1	—	—	—
18	Injector 5	—	W53	—	0.5	MAXXECURACE-C1-M3	—	—	—
19	Injector 6	—	W54	—	0.5	MAXXECURACE-C1-L3	—	—	—
2	5V reference (crankshaft sensor)	—	W31	—	0.5	SP-5V1-1	—	—	—
20	Injector 1	—	W49	—	0.5	MAXXECURACE-C1-K1	—	—	—
21	Engine coolant temperature (ECT) signal	—	W65	—	0.5	MAXXECURACE-C1-F1	—	—	—
22	ECT low reference	—	W16	—	0.5	SP-0V-1	—	—	—
26	Knock sensor 1 signal A	—	W39	—	0.5	MAXXECURACE-C2-E2	—	—	—
27	Knock sensor 1 signal B	—	W40	—	0.5	MAXXECURACE-C2-E3	—	—	—
29	Knock sensor 2 signal A	—	—	—	—	—	—	—	—
3	5V reference (throttle body)	—	W32	—	0.5	SP-5V1-1	—	—	—
30	Knock sensor 2 signal B	—	—	—	—	—	—	—	—
32	Generator field duty control	—	—	—	—	—	—	—	—
33	Oil level switch signal	—	—	—	—	—	—	—	—
34	Oil pressure low reference	—	W17	—	0.5	SP-0V-1	—	—	—
35	Throttle body low reference	—	W18	—	0.5	SP-0V-1	—	—	—
37	Injector 2	—	W50	—	0.5	MAXXECURACE-C1-K2	—	—	—
38	Injector 3	—	W51	—	0.5	MAXXECURACE-C1-M1	—	—	—
39	Injector 4	—	W52	—	0.5	MAXXECURACE-C1-M2	—	—	—
40	Injector 7	—	W55	—	0.5	MAXXECURACE-C1-L2	—	—	—
41	5V reference (oil pressure)	—	W33	—	0.5	SP-5V1-1	—	—	—
43	5V reference (MAP)	—	W34	—	0.5	SP-5V1-1	—	—	—
44	5V reference (camshaft sensor)	—	W35	—	0.5	SP-5V1-1	—	—	—
5	Throttle actuator motor control 2	—	—	—	—	—	—	—	—
50	Engine oil pressure signal	—	—	—	—	—	—	—	—
52	Camshaft actuator low reference	—	W19	—	0.5	SP-0V-1	—	—	—
53	MAP low reference	—	W20	—	0.5	SP-0V-1	—	—	—
56	HO2S low reference, bank 1 sensor 1	—	W21	—	0.5	SP-0V-1	—	—	—
57	HO2S signal, bank 1 sensor 1 (pre-cat)	—	—	—	—	—	—	—	—
58	Manifold absolute pressure (MAP) signal	—	W60	—	0.5	MAXXECURACE-C1-J4	—	—	—
59	HO2S signal, bank 2 sensor 1 (pre-cat)	—	—	—	—	—	—	—	—
6	Throttle actuator motor control 1	—	—	—	—	—	—	—	—
60	HO2S low reference, bank 2 sensor 1	—	W22	—	0.5	SP-0V-1	—	—	—
61	Charge indicator signal	—	—	—	—	—	—	—	—
63	Throttle position sensor 2 signal	—	W64	—	0.5	MAXXECURACE-C2-F1	—	—	—
64	Camshaft position signal (4x)	—	W38	—	0.5	MAXXECURACE-C1-H4	—	—	—
65	Throttle position sensor 1 signal	—	W62	—	0.5	MAXXECURACE-C2-G3	—	—	—
66	Camshaft position low reference	—	W23	—	0.5	SP-0V-1	—	—	—
68	Crankshaft position signal (58x)	—	W37	—	0.5	MAXXECURACE-C1-H3	—	—	—
69	Crankshaft position low reference	—	W24	—	0.5	SP-0V-1	—	—	—
70	Ignition coil 1 control	—	W41	—	0.5	MAXXECURACE-C1-A2	—	—	—
71	Ignition coil 8 control	—	W48	—	0.5	MAXXECURACE-C1-D3	—	—	—
72	Ignition coil 7 control	—	W47	—	0.5	MAXXECURACE-C1-D2	—	—	—
73	Ignition coil 2 control	—	W42	—	0.5	MAXXECURACE-C1-A3	—	—	—
74	Ignition coil 6 control	—	W46	—	0.5	MAXXECURACE-C1-C3	—	—	—
75	Ignition coil 5 control	—	W45	—	0.5	MAXXECURACE-C1-C2	—	—	—
76	Ignition coil 4 control	—	W44	—	0.5	MAXXECURACE-C1-B3	—	—	—
77	Ignition coil 3 control	—	W43	—	0.5	MAXXECURACE-C1-B2	—	—	—
78	Coil low reference (odd bank)	—	W5	—	0.85	SP-GND-1	—	—	—
79	Coil low reference (even bank)	—	W6	—	0.85	SP-GND-1	—	—	—
8	EVAP canister purge solenoid	—	—	—	—	—	—	—	—
9	Cylinder shutoff solenoid 3 (AFM)	—	—	—	—	—	—	—	—

SP-0V

Cavity	Function	Signal	Wire	Colour	Gauge (mm²)	Destination	Terminal	Seal	Plug
1	—	—	W9	—	0.5	OEM-X1-11	—	—	—
1	—	—	W10	—	0.5	OEM-X1-13	—	—	—
1	—	—	W11	—	0.5	OEM-X1-23	—	—	—
1	—	—	W12	—	0.5	OEM-X1-30	—	—	—
1	—	—	W13	—	0.5	OEM-X1-31	—	—	—
1	—	—	W14	—	0.5	OEM-X1-38	—	—	—
1	—	—	W15	—	0.5	OEM-X1-49	—	—	—
1	—	—	W16	—	0.5	OEM-X2-22	—	—	—
1	—	—	W17	—	0.5	OEM-X2-34	—	—	—
1	—	—	W18	—	0.5	OEM-X2-35	—	—	—
1	—	—	W19	—	0.5	OEM-X2-52	—	—	—
1	—	—	W20	—	0.5	OEM-X2-53	—	—	—
1	—	—	W21	—	0.5	OEM-X2-56	—	—	—
1	—	—	W22	—	0.5	OEM-X2-60	—	—	—
1	—	—	W23	—	0.5	OEM-X2-66	—	—	—
1	—	—	W24	—	0.5	OEM-X2-69	—	—	—
1	—	—	W25	—	0.5	MAXXECURACE-C1-H1	—	—	—
1	—	—	W26	—	0.5	MAXXECURACE-C1-H2	—	—	—

SP-14V

Cavity	Function	Signal	Wire	Colour	Gauge (mm²)	Destination	Terminal	Seal	Plug
1	—	—	W1	—	0.85	OEM-X1-19	—	—	—
1	—	—	W2	—	0.85	OEM-X1-47	—	—	—
1	—	—	W3	—	0.85	MAXXECURACE-C1-M4	—	—	—

SP-5V1

Cavity	Function	Signal	Wire	Colour	Gauge (mm²)	Destination	Terminal	Seal	Plug
1	—	—	W27	—	0.5	OEM-X1-33	—	—	—
1	—	—	W28	—	0.5	OEM-X1-34	—	—	—
1	—	—	W29	—	0.5	OEM-X1-36	—	—	—
1	—	—	W30	—	0.5	OEM-X1-56	—	—	—
1	—	—	W31	—	0.5	OEM-X2-2	—	—	—
1	—	—	W32	—	0.5	OEM-X2-3	—	—	—
1	—	—	W33	—	0.5	OEM-X2-41	—	—	—
1	—	—	W34	—	0.5	OEM-X2-43	—	—	—
1	—	—	W35	—	0.5	OEM-X2-44	—	—	—
1	—	—	W36	—	0.5	MAXXECURACE-C1-G1	—	—	—

SP-GND

Cavity	Function	Signal	Wire	Colour	Gauge (mm²)	Destination	Terminal	Seal	Plug
1	—	—	W4	—	0.85	OEM-X1-73	—	—	—
1	—	—	W5	—	0.85	OEM-X2-78	—	—	—
1	—	—	W6	—	0.85	OEM-X2-79	—	—	—
1	—	—	W7	—	0.85	MAXXECURACE-C1-L4	—	—	—
1	—	—	W8	—	0.85	MAXXECURACE-C2-G4	—	—	—

Pin map

OEM point	OEM function	OEM family	Target point	Target function	Target family	Evidence
OEM-X1-1	Park/Neutral signal (1786)	digital_in	MAXXECURACE-C2-F4	DIN/VR 5	digital_in	single_source
OEM-X1-10	HO2S signal, bank 1 sensor 2 (post-cat)	lambda_nb_in	MAXXECURACE-C2-F2	AIN 8 (0-5V)	analog_in	single_source
OEM-X1-11	HO2S low reference, bank 1 sensor 2	sensor_ground	MAXXECURACE-C1-H1 + MAXXECURACE-C1-H2	Sensor GND + Trigger GND	sensor_ground	single_source
OEM-X1-12	A/C refrigerant pressure signal	analog_in	—	—	—	corroborated
OEM-X1-13	A/C refrigerant pressure sensor low reference (5514)	sensor_ground	MAXXECURACE-C1-H1 + MAXXECURACE-C1-H2	Sensor GND + Trigger GND	sensor_ground	single_source
OEM-X1-16	Fuel level sensor signal, primary (1589)	analog_in	—	—	—	single_source
OEM-X1-17	High speed cooling fan relay	low_side_out	MAXXECURACE-C1-D4	GPO 3	low_side_out	corroborated
OEM-X1-18	Accessory wakeup serial data (5985)	serial	—	—	—	single_source
OEM-X1-19	Ignition 1 voltage (key hot)	power_in	MAXXECURACE-C1-M4	+12V ECU power supply	power_in	single_source
OEM-X1-2	4WD low signal (1694)	digital_in	MAXXECURACE-C2-F3	DIN/VR 4	digital_in	single_source
OEM-X1-20	Battery positive voltage (batt hot)	power_in	—	—	—	single_source
OEM-X1-23	APP sensor low reference	sensor_ground	MAXXECURACE-C1-H1 + MAXXECURACE-C1-H2	Sensor GND + Trigger GND	sensor_ground	single_source
OEM-X1-24	Fuel tank pressure signal	analog_in	—	—	—	corroborated
OEM-X1-27	High-speed GMLAN serial data bus - (2501)	can_l	MAXXECURACE-C1-E2	CAN L	can_l	single_source
OEM-X1-28	High-speed GMLAN serial data bus + (2500)	can_h	MAXXECURACE-C1-E1	CAN H	can_h	single_source
OEM-X1-29	Accelerator pedal position (APP) sensor 1 signal	analog_in	MAXXECURACE-C1-G2	TPS/AIN	analog_in	single_source
OEM-X1-3	Axle switch signal (1695)	digital_in	—	—	—	single_source
OEM-X1-30	APP sensor low reference	sensor_ground	MAXXECURACE-C1-H1 + MAXXECURACE-C1-H2	Sensor GND + Trigger GND	sensor_ground	single_source
OEM-X1-31	Fuel tank pressure sensor low reference (6049)	sensor_ground	MAXXECURACE-C1-H1 + MAXXECURACE-C1-H2	Sensor GND + Trigger GND	sensor_ground	single_source
OEM-X1-32	Accelerator pedal position (APP) sensor 2 signal	analog_in	MAXXECURACE-C2-E4	AIN 6 (0-5V)	analog_in	single_source
OEM-X1-33	5V reference (fuel tank pressure)	vref	MAXXECURACE-C1-G1	+5V sensor supply	vref	single_source
OEM-X1-34	5V reference (A/C pressure)	vref	MAXXECURACE-C1-G1	+5V sensor supply	vref	single_source
OEM-X1-36	5V reference (APP sensor)	vref	MAXXECURACE-C1-G1	+5V sensor supply	vref	single_source
OEM-X1-37	Intake air temperature (IAT) signal	temp_in	MAXXECURACE-C1-F2	IAT	temp_in	corroborated
OEM-X1-38	Intake air temperature (IAT) low reference	sensor_ground	MAXXECURACE-C1-H1 + MAXXECURACE-C1-H2	Sensor GND + Trigger GND	sensor_ground	single_source
OEM-X1-41	Mass air flow (MAF) signal	analog_in	MAXXECURACE-C1-J3	AIN 3 (0-5V)	analog_in	corroborated
OEM-X1-47	Ignition 1 voltage (key hot)	power_in	MAXXECURACE-C1-M4	+12V ECU power supply	power_in	single_source
OEM-X1-48	Tachometer output	tacho_out	—	—	—	corroborated
OEM-X1-49	HO2S low reference, bank 2 sensor 2	sensor_ground	MAXXECURACE-C1-H1 + MAXXECURACE-C1-H2	Sensor GND + Trigger GND	sensor_ground	single_source
OEM-X1-50	Fuel pump relay control (primary)	low_side_out	MAXXECURACE-C1-B4	GPO 1	low_side_out	corroborated
OEM-X1-51	Fuel pump relay control (secondary)	low_side_out	MAXXECURACE-C1-E4	GPO 4	low_side_out	corroborated
OEM-X1-52	Starter enable relay control	low_side_out	MAXXECURACE-C1-A1	GPO 5	low_side_out	corroborated
OEM-X1-56	5V reference (APP sensor)	vref	MAXXECURACE-C1-G1	+5V sensor supply	vref	single_source
OEM-X1-57	VSS output to ABS (128k)	tacho_out	—	—	—	corroborated
OEM-X1-58	Low speed cooling fan relay	low_side_out	MAXXECURACE-C1-B1	GPO 6	low_side_out	corroborated
OEM-X1-59	Powertrain relay coil control (main relay)	low_side_out	MAXXECURACE-C1-C4	GPO 2	low_side_out	corroborated
OEM-X1-61	EVAP canister vent solenoid	low_side_out	—	—	—	corroborated
OEM-X1-63	A/C compressor clutch relay	low_side_out	MAXXECURACE-C1-C1	GPO 7	low_side_out	corroborated
OEM-X1-64	HO2S heater low control, bank 2 sensor 2	low_side_out	MAXXECURACE-C1-D1	WBO2 Heater-	low_side_out	single_source
OEM-X1-65	HO2S heater low control, bank 1 sensor 2	low_side_out	MAXXECURACE-C1-A4	GPO 8/TACHO	low_side_out	single_source
OEM-X1-68	Malfunction indicator lamp (MIL)	low_side_out	—	—	—	corroborated
OEM-X1-69	HO2S signal, bank 2 sensor 2 (post-cat)	lambda_nb_in	—	—	—	single_source
OEM-X1-70	Secondary fuel level sensor signal (1937)	analog_in	—	—	—	single_source
OEM-X1-71	VSS high signal (manual trans)	digital_in	MAXXECURACE-C1-K3	DIN/VR 1	digital_in	corroborated
OEM-X1-72	VSS low signal (manual trans)	digital_in	MAXXECURACE-C1-K4	DIN/VR 2	digital_in	corroborated
OEM-X1-73	Power ground	ground	MAXXECURACE-C1-L4 + MAXXECURACE-C2-G4	Engine GND + ENGINE GROUND	ground	single_source
OEM-X1-9	Brake switch signal	digital_in	—	—	—	corroborated
OEM-X2-10	Cylinder shutoff solenoid 1 (AFM)	low_side_out	—	—	—	corroborated
OEM-X2-11	Cylinder shutoff solenoid 4 (AFM)	low_side_out	—	—	—	corroborated
OEM-X2-12	HO2S heater low control, bank 1 sensor 1	low_side_out	—	—	—	single_source
OEM-X2-13	HO2S heater low control, bank 2 sensor 1	low_side_out	—	—	—	single_source
OEM-X2-14	Cylinder shutoff solenoid 2 (AFM)	low_side_out	—	—	—	corroborated
OEM-X2-16	Camshaft actuator solenoid (VVT)	low_side_out	—	—	—	corroborated
OEM-X2-17	Injector 8	injector_out	MAXXECURACE-C1-L1	INJ 8	injector_out	single_source
OEM-X2-18	Injector 5	injector_out	MAXXECURACE-C1-M3	INJ 5	injector_out	single_source
OEM-X2-19	Injector 6	injector_out	MAXXECURACE-C1-L3	INJ 6	injector_out	single_source
OEM-X2-2	5V reference (crankshaft sensor)	vref	MAXXECURACE-C1-G1	+5V sensor supply	vref	single_source
OEM-X2-20	Injector 1	injector_out	MAXXECURACE-C1-K1	INJ 1	injector_out	single_source
OEM-X2-21	Engine coolant temperature (ECT) signal	temp_in	MAXXECURACE-C1-F1	CLT	temp_in	corroborated
OEM-X2-22	ECT low reference	sensor_ground	MAXXECURACE-C1-H1 + MAXXECURACE-C1-H2	Sensor GND + Trigger GND	sensor_ground	single_source
OEM-X2-26	Knock sensor 1 signal A	knock_in	MAXXECURACE-C2-E2	Knock 1	knock_in	corroborated
OEM-X2-27	Knock sensor 1 signal B	knock_in	MAXXECURACE-C2-E3	Knock 2	knock_in	single_source
OEM-X2-29	Knock sensor 2 signal A	knock_in	—	—	—	corroborated
OEM-X2-3	5V reference (throttle body)	vref	MAXXECURACE-C1-G1	+5V sensor supply	vref	single_source
OEM-X2-30	Knock sensor 2 signal B	knock_in	—	—	—	single_source
OEM-X2-32	Generator field duty control	low_side_out	—	—	—	corroborated
OEM-X2-33	Oil level switch signal	digital_in	—	—	—	corroborated
OEM-X2-34	Oil pressure low reference	sensor_ground	MAXXECURACE-C1-H1 + MAXXECURACE-C1-H2	Sensor GND + Trigger GND	sensor_ground	single_source
OEM-X2-35	Throttle body low reference	sensor_ground	MAXXECURACE-C1-H1 + MAXXECURACE-C1-H2	Sensor GND + Trigger GND	sensor_ground	single_source
OEM-X2-37	Injector 2	injector_out	MAXXECURACE-C1-K2	INJ 2	injector_out	single_source
OEM-X2-38	Injector 3	injector_out	MAXXECURACE-C1-M1	INJ 3	injector_out	single_source
OEM-X2-39	Injector 4	injector_out	MAXXECURACE-C1-M2	INJ 4	injector_out	single_source
OEM-X2-40	Injector 7	injector_out	MAXXECURACE-C1-L2	INJ 7	injector_out	single_source
OEM-X2-41	5V reference (oil pressure)	vref	MAXXECURACE-C1-G1	+5V sensor supply	vref	single_source
OEM-X2-43	5V reference (MAP)	vref	MAXXECURACE-C1-G1	+5V sensor supply	vref	single_source
OEM-X2-44	5V reference (camshaft sensor)	vref	MAXXECURACE-C1-G1	+5V sensor supply	vref	single_source
OEM-X2-5	Throttle actuator motor control 2	hbridge_out	—	—	—	corroborated
OEM-X2-50	Engine oil pressure signal	analog_in	—	—	—	corroborated
OEM-X2-52	Camshaft actuator low reference	sensor_ground	MAXXECURACE-C1-H1 + MAXXECURACE-C1-H2	Sensor GND + Trigger GND	sensor_ground	single_source
OEM-X2-53	MAP low reference	sensor_ground	MAXXECURACE-C1-H1 + MAXXECURACE-C1-H2	Sensor GND + Trigger GND	sensor_ground	single_source
OEM-X2-56	HO2S low reference, bank 1 sensor 1	sensor_ground	MAXXECURACE-C1-H1 + MAXXECURACE-C1-H2	Sensor GND + Trigger GND	sensor_ground	single_source
OEM-X2-57	HO2S signal, bank 1 sensor 1 (pre-cat)	lambda_nb_in	—	—	—	single_source
OEM-X2-58	Manifold absolute pressure (MAP) signal	analog_in	MAXXECURACE-C1-J4	AIN 4 (0-5V)	analog_in	corroborated
OEM-X2-59	HO2S signal, bank 2 sensor 1 (pre-cat)	lambda_nb_in	—	—	—	single_source
OEM-X2-6	Throttle actuator motor control 1	hbridge_out	—	—	—	corroborated
OEM-X2-60	HO2S low reference, bank 2 sensor 1	sensor_ground	MAXXECURACE-C1-H1 + MAXXECURACE-C1-H2	Sensor GND + Trigger GND	sensor_ground	single_source
OEM-X2-61	Charge indicator signal	low_side_out	—	—	—	corroborated
OEM-X2-63	Throttle position sensor 2 signal	analog_in	MAXXECURACE-C2-F1	AIN 7 (0-5V)	analog_in	single_source
OEM-X2-64	Camshaft position signal (4x)	trigger_in	MAXXECURACE-C1-H4	HOME	trigger_in	single_source
OEM-X2-65	Throttle position sensor 1 signal	analog_in	MAXXECURACE-C2-G3	AIN 5 (0-5V)	analog_in	single_source
OEM-X2-66	Camshaft position low reference	sensor_ground	MAXXECURACE-C1-H1 + MAXXECURACE-C1-H2	Sensor GND + Trigger GND	sensor_ground	single_source
OEM-X2-68	Crankshaft position signal (58x)	trigger_in	MAXXECURACE-C1-H3	TRIGGER	trigger_in	single_source
OEM-X2-69	Crankshaft position low reference	sensor_ground	MAXXECURACE-C1-H1 + MAXXECURACE-C1-H2	Sensor GND + Trigger GND	sensor_ground	single_source
OEM-X2-70	Ignition coil 1 control	ignition_out	MAXXECURACE-C1-A2	IGN 1	ignition_out	single_source
OEM-X2-71	Ignition coil 8 control	ignition_out	MAXXECURACE-C1-D3	IGN 8	ignition_out	single_source
OEM-X2-72	Ignition coil 7 control	ignition_out	MAXXECURACE-C1-D2	IGN 7	ignition_out	single_source
OEM-X2-73	Ignition coil 2 control	ignition_out	MAXXECURACE-C1-A3	IGN 2	ignition_out	single_source
OEM-X2-74	Ignition coil 6 control	ignition_out	MAXXECURACE-C1-C3	IGN 6	ignition_out	single_source
OEM-X2-75	Ignition coil 5 control	ignition_out	MAXXECURACE-C1-C2	IGN 5	ignition_out	single_source
OEM-X2-76	Ignition coil 4 control	ignition_out	MAXXECURACE-C1-B3	IGN 4	ignition_out	single_source
OEM-X2-77	Ignition coil 3 control	ignition_out	MAXXECURACE-C1-B2	IGN 3	ignition_out	single_source
OEM-X2-78	Coil low reference (odd bank)	ground	MAXXECURACE-C1-L4 + MAXXECURACE-C2-G4	Engine GND + ENGINE GROUND	ground	single_source
OEM-X2-79	Coil low reference (even bank)	ground	MAXXECURACE-C1-L4 + MAXXECURACE-C2-G4	Engine GND + ENGINE GROUND	ground	single_source
OEM-X2-8	EVAP canister purge solenoid	low_side_out	—	—	—	corroborated
OEM-X2-9	Cylinder shutoff solenoid 3 (AFM)	low_side_out	—	—	—	corroborated

Cut list

Wire	From	To	Gauge (mm²)	Length	Signal	Ident
W1	OEM-X1-19	SP-14V-1	0.85	no route	Ignition 1 voltage (key hot)	—
W2	OEM-X1-47	SP-14V-1	0.85	no route	Ignition 1 voltage (key hot)	—
W3	SP-14V-1	MAXXECURACE-C1-M4	0.85	no route	+12V ECU power supply	—
W4	OEM-X1-73	SP-GND-1	0.85	no route	Power ground	—
W5	OEM-X2-78	SP-GND-1	0.85	no route	Coil low reference (odd bank)	—
W6	OEM-X2-79	SP-GND-1	0.85	no route	Coil low reference (even bank)	—
W7	SP-GND-1	MAXXECURACE-C1-L4	0.85	no route	Engine GND	—
W8	SP-GND-1	MAXXECURACE-C2-G4	0.85	no route	ENGINE GROUND	—
W9	OEM-X1-11	SP-0V-1	0.5	no route	HO2S low reference, bank 1 sensor 2	—
W10	OEM-X1-13	SP-0V-1	0.5	no route	A/C refrigerant pressure sensor low reference (5514)	—
W11	OEM-X1-23	SP-0V-1	0.5	no route	APP sensor low reference	—
W12	OEM-X1-30	SP-0V-1	0.5	no route	APP sensor low reference	—
W13	OEM-X1-31	SP-0V-1	0.5	no route	Fuel tank pressure sensor low reference (6049)	—
W14	OEM-X1-38	SP-0V-1	0.5	no route	Intake air temperature (IAT) low reference	—
W15	OEM-X1-49	SP-0V-1	0.5	no route	HO2S low reference, bank 2 sensor 2	—
W16	OEM-X2-22	SP-0V-1	0.5	no route	ECT low reference	—
W17	OEM-X2-34	SP-0V-1	0.5	no route	Oil pressure low reference	—
W18	OEM-X2-35	SP-0V-1	0.5	no route	Throttle body low reference	—
W19	OEM-X2-52	SP-0V-1	0.5	no route	Camshaft actuator low reference	—
W20	OEM-X2-53	SP-0V-1	0.5	no route	MAP low reference	—
W21	OEM-X2-56	SP-0V-1	0.5	no route	HO2S low reference, bank 1 sensor 1	—
W22	OEM-X2-60	SP-0V-1	0.5	no route	HO2S low reference, bank 2 sensor 1	—
W23	OEM-X2-66	SP-0V-1	0.5	no route	Camshaft position low reference	—
W24	OEM-X2-69	SP-0V-1	0.5	no route	Crankshaft position low reference	—
W25	SP-0V-1	MAXXECURACE-C1-H1	0.5	no route	Sensor GND	—
W26	SP-0V-1	MAXXECURACE-C1-H2	0.5	no route	Trigger GND	—
W27	OEM-X1-33	SP-5V1-1	0.5	no route	5V reference (fuel tank pressure)	—
W28	OEM-X1-34	SP-5V1-1	0.5	no route	5V reference (A/C pressure)	—
W29	OEM-X1-36	SP-5V1-1	0.5	no route	5V reference (APP sensor)	—
W30	OEM-X1-56	SP-5V1-1	0.5	no route	5V reference (APP sensor)	—
W31	OEM-X2-2	SP-5V1-1	0.5	no route	5V reference (crankshaft sensor)	—
W32	OEM-X2-3	SP-5V1-1	0.5	no route	5V reference (throttle body)	—
W33	OEM-X2-41	SP-5V1-1	0.5	no route	5V reference (oil pressure)	—
W34	OEM-X2-43	SP-5V1-1	0.5	no route	5V reference (MAP)	—
W35	OEM-X2-44	SP-5V1-1	0.5	no route	5V reference (camshaft sensor)	—
W36	SP-5V1-1	MAXXECURACE-C1-G1	0.5	no route	+5V sensor supply	—
W37	OEM-X2-68	MAXXECURACE-C1-H3	0.5	no route	Crankshaft position signal (58x)	—
W38	OEM-X2-64	MAXXECURACE-C1-H4	0.5	no route	Camshaft position signal (4x)	—
W39	OEM-X2-26	MAXXECURACE-C2-E2	0.5	no route	Knock sensor 1 signal A	—
W40	OEM-X2-27	MAXXECURACE-C2-E3	0.5	no route	Knock sensor 1 signal B	—
W41	OEM-X2-70	MAXXECURACE-C1-A2	0.5	no route	Ignition coil 1 control	—
W42	OEM-X2-73	MAXXECURACE-C1-A3	0.5	no route	Ignition coil 2 control	—
W43	OEM-X2-77	MAXXECURACE-C1-B2	0.5	no route	Ignition coil 3 control	—
W44	OEM-X2-76	MAXXECURACE-C1-B3	0.5	no route	Ignition coil 4 control	—
W45	OEM-X2-75	MAXXECURACE-C1-C2	0.5	no route	Ignition coil 5 control	—
W46	OEM-X2-74	MAXXECURACE-C1-C3	0.5	no route	Ignition coil 6 control	—
W47	OEM-X2-72	MAXXECURACE-C1-D2	0.5	no route	Ignition coil 7 control	—
W48	OEM-X2-71	MAXXECURACE-C1-D3	0.5	no route	Ignition coil 8 control	—
W49	OEM-X2-20	MAXXECURACE-C1-K1	0.5	no route	Injector 1	—
W50	OEM-X2-37	MAXXECURACE-C1-K2	0.5	no route	Injector 2	—
W51	OEM-X2-38	MAXXECURACE-C1-M1	0.5	no route	Injector 3	—
W52	OEM-X2-39	MAXXECURACE-C1-M2	0.5	no route	Injector 4	—
W53	OEM-X2-18	MAXXECURACE-C1-M3	0.5	no route	Injector 5	—
W54	OEM-X2-19	MAXXECURACE-C1-L3	0.5	no route	Injector 6	—
W55	OEM-X2-40	MAXXECURACE-C1-L2	0.5	no route	Injector 7	—
W56	OEM-X2-17	MAXXECURACE-C1-L1	0.5	no route	Injector 8	—
W57	OEM-X1-50	MAXXECURACE-C1-B4	0.5	no route	Fuel pump relay control (primary)	—
W58	OEM-X1-59	MAXXECURACE-C1-C4	0.5	no route	Powertrain relay coil control (main relay)	—
W59	OEM-X1-41	MAXXECURACE-C1-J3	0.5	no route	Mass air flow (MAF) signal	—
W60	OEM-X2-58	MAXXECURACE-C1-J4	0.5	no route	Manifold absolute pressure (MAP) signal	—
W61	OEM-X1-29	MAXXECURACE-C1-G2	0.5	no route	Accelerator pedal position (APP) sensor 1 signal	—
W62	OEM-X2-65	MAXXECURACE-C2-G3	0.5	no route	Throttle position sensor 1 signal	—
W63	OEM-X1-32	MAXXECURACE-C2-E4	0.5	no route	Accelerator pedal position (APP) sensor 2 signal	—
W64	OEM-X2-63	MAXXECURACE-C2-F1	0.5	no route	Throttle position sensor 2 signal	—
W65	OEM-X2-21	MAXXECURACE-C1-F1	0.5	no route	Engine coolant temperature (ECT) signal	—
W66	OEM-X1-17	MAXXECURACE-C1-D4	0.5	no route	High speed cooling fan relay	—
W67	OEM-X1-51	MAXXECURACE-C1-E4	0.5	no route	Fuel pump relay control (secondary)	—
W68	OEM-X1-52	MAXXECURACE-C1-A1	0.5	no route	Starter enable relay control	—
W69	OEM-X1-58	MAXXECURACE-C1-B1	0.5	no route	Low speed cooling fan relay	—
W70	OEM-X1-63	MAXXECURACE-C1-C1	0.5	no route	A/C compressor clutch relay	—
W71	OEM-X1-64	MAXXECURACE-C1-D1	0.5	no route	HO2S heater low control, bank 2 sensor 2	—
W72	OEM-X1-65	MAXXECURACE-C1-A4	0.5	no route	HO2S heater low control, bank 1 sensor 2	—
W73	OEM-X1-10	MAXXECURACE-C2-F2	0.5	no route	HO2S signal, bank 1 sensor 2 (post-cat)	—
W74	OEM-X1-37	MAXXECURACE-C1-F2	0.5	no route	Intake air temperature (IAT) signal	—
W75	OEM-X1-71	MAXXECURACE-C1-K3	0.5	no route	VSS high signal (manual trans)	—
W76	OEM-X1-72	MAXXECURACE-C1-K4	0.5	no route	VSS low signal (manual trans)	—
W77	OEM-X1-2	MAXXECURACE-C2-F3	0.5	no route	4WD low signal (1694)	—
W78	OEM-X1-1	MAXXECURACE-C2-F4	0.5	no route	Park/Neutral signal (1786)	—
W79	OEM-X1-28	MAXXECURACE-C1-E1	0.5	no route	High-speed GMLAN serial data bus + (2500)	—
W80	OEM-X1-27	MAXXECURACE-C1-E2	0.5	no route	High-speed GMLAN serial data bus - (2501)	—

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 (3)

Severity	Code	Subject	Message
error	REQUIRED_UNMAPPED	OEM-X2-5	Required OEM function "Throttle actuator motor control 2" (hbridge_out) is not connected to the new ECU.
error	REQUIRED_UNMAPPED	OEM-X2-6	Required OEM function "Throttle actuator motor control 1" (hbridge_out) is not connected to the new ECU.
info	UNMAPPED	OEM	28 optional OEM pins are not mapped: OEM-X1-12 A/C refrigerant pressure signal; OEM-X1-16 Fuel level sensor signal, primary (1589); OEM-X1-18 Accessory wakeup serial data (5985); OEM-X1-24 Fuel tank pressure signal; OEM-X1-3 Axle switch signal (1695); OEM-X1-48 Tachometer output; OEM-X1-57 VSS output to ABS (128k); OEM-X1-61 EVAP canister vent solenoid; OEM-X1-68 Malfunction indicator lamp (MIL); OEM-X1-69 HO2S signal, bank 2 sensor 2 (post-cat); OEM-X1-70 Secondary fuel level sensor signal (1937); OEM-X1-9 Brake switch signal; OEM-X2-10 Cylinder shutoff solenoid 1 (AFM); OEM-X2-11 Cylinder shutoff solenoid 4 (AFM); OEM-X2-12 HO2S heater low control, bank 1 sensor 1; OEM-X2-13 HO2S heater low control, bank 2 sensor 1; OEM-X2-14 Cylinder shutoff solenoid 2 (AFM); OEM-X2-16 Camshaft actuator solenoid (VVT); OEM-X2-29 Knock sensor 2 signal A; OEM-X2-30 Knock sensor 2 signal B; OEM-X2-32 Generator field duty control; OEM-X2-33 Oil level switch signal; OEM-X2-50 Engine oil pressure signal; OEM-X2-57 HO2S signal, bank 1 sensor 1 (pre-cat); OEM-X2-59 HO2S signal, bank 2 sensor 1 (pre-cat); OEM-X2-61 Charge indicator signal; OEM-X2-8 EVAP canister purge solenoid; OEM-X2-9 Cylinder shutoff solenoid 3 (AFM)

Accepted (1)

Code	Subject	Reason	By
REQUIRED_UNMAPPED	OEM-X1-20	Battery-constant (memory) feed of the stock ECU: the new ECU has no such input, so it is not needed.	mapping-proposal

Notes

Auto-mapped by auto_map() from the library pin data on 2026-10-11. Review every wire against both manuals before building. Open items: - OEM-X2 6: Throttle actuator motor control 1: no +/− pair in the pinout (multi-phase or half-documented motor); wire by hand - OEM-X2 5: Throttle actuator motor control 2: no +/− pair in the pinout (multi-phase or half-documented motor); wire by hand Not wired: - OEM-X1 20: Battery positive voltage (batt hot): MaxxECU MaxxECU RACE has no battery-constant input; not needed - OEM-X2 29: Knock sensor 2 signal A: no free knock input on MaxxECU MaxxECU RACE - OEM-X2 30: Knock sensor 2 signal B: no free knock input on MaxxECU MaxxECU RACE - OEM-X2 12: HO2S heater low control, bank 1 sensor 1: no free heater_low_side/low_side/relay_control/ls_hs/injector on MaxxECU MaxxECU RACE - OEM-X2 13: HO2S heater low control, bank 2 sensor 1: no free heater_low_side/low_side/relay_control/ls_hs/injector on MaxxECU MaxxECU RACE - OEM-X2 10: Cylinder shutoff solenoid 1 (AFM): no free low_side/relay_control/heater_low_side/ls_hs/injector on MaxxECU MaxxECU RACE - OEM-X2 14: Cylinder shutoff solenoid 2 (AFM): no free low_side/relay_control/heater_low_side/ls_hs/injector on MaxxECU MaxxECU RACE - OEM-X2 9: Cylinder shutoff solenoid 3 (AFM): no free low_side/relay_control/heater_low_side/ls_hs/injector on MaxxECU MaxxECU RACE - OEM-X2 11: Cylinder shutoff solenoid 4 (AFM): no free low_side/relay_control/heater_low_side/ls_hs/injector on MaxxECU MaxxECU RACE - OEM-X1 61: EVAP canister vent solenoid: no free low_side/relay_control/heater_low_side/ls_hs/injector on MaxxECU MaxxECU RACE - OEM-X1 68: Malfunction indicator lamp (MIL): no free low_side/relay_control/heater_low_side/ls_hs/injector on MaxxECU MaxxECU RACE - OEM-X2 16: Camshaft actuator solenoid (VVT): no free low_side/relay_control/heater_low_side/ls_hs/injector on MaxxECU MaxxECU RACE - OEM-X2 32: Generator field duty control: no free low_side/relay_control/heater_low_side/ls_hs/injector on MaxxECU MaxxECU RACE - OEM-X2 61: Charge indicator signal: no free low_side/relay_control/heater_low_side/ls_hs/injector on MaxxECU MaxxECU RACE - OEM-X2 8: EVAP canister purge solenoid: no free low_side/relay_control/heater_low_side/ls_hs/injector on MaxxECU MaxxECU RACE - OEM-X1 48: Tachometer output: no free tacho/frequency_out/low_side/ls_hs on MaxxECU MaxxECU RACE - OEM-X1 57: VSS output to ABS (128k): no free frequency_out/tacho/low_side/ls_hs on MaxxECU MaxxECU RACE - OEM-X1 69: HO2S signal, bank 2 sensor 2 (post-cat): no free o2_narrowband/analog_0_5 on MaxxECU MaxxECU RACE - OEM-X2 57: HO2S signal, bank 1 sensor 1 (pre-cat): no free o2_narrowband/analog_0_5 on MaxxECU MaxxECU RACE - OEM-X2 59: HO2S signal, bank 2 sensor 1 (pre-cat): no free o2_narrowband/analog_0_5 on MaxxECU MaxxECU RACE - OEM-X1 12: A/C refrigerant pressure signal: no free analog_0_5 on MaxxECU MaxxECU RACE - OEM-X1 16: Fuel level sensor signal, primary (1589): no free analog_0_5 on MaxxECU MaxxECU RACE - OEM-X1 24: Fuel tank pressure signal: no free analog_0_5 on MaxxECU MaxxECU RACE - OEM-X1 70: Secondary fuel level sensor signal (1937): no free analog_0_5 on MaxxECU MaxxECU RACE - OEM-X2 50: Engine oil pressure signal: no free analog_0_5 on MaxxECU MaxxECU RACE - OEM-X1 3: Axle switch signal (1695): no free switch_in/frequency_in/analog_0_5 on MaxxECU MaxxECU RACE - OEM-X1 9: Brake switch signal: no free switch_in/frequency_in/analog_0_5 on MaxxECU MaxxECU RACE - OEM-X2 33: Oil level switch signal: no free switch_in/frequency_in/analog_0_5 on MaxxECU MaxxECU RACE - OEM-X1 18: Accessory wakeup serial data (5985): no free k_line on MaxxECU MaxxECU RACE

Sources

Reliability	Kind	Title	URL	Archive	Captured	SHA-256
4	vendor_doc	MaxxECU GEN1 pinout (MINI / STREET / SPORT / V1 / RACE / PRO)	http://www.maxxecu.com/webhelp/wirings-maxxecu_pinout.html	archive	2026-10-05	2e37b6814690
4	vendor_doc	MaxxECU webhelp: Wiring — plug-in ECU Chevrolet Corvette C6 (GM E38 ECM)	http://www.maxxecu.com/webhelp/wirings-pluginecu-chevrolet_corvette_c6_e38_ecm.html	—	—	—
2	community_copy	lt1swap.com: E38 ECM Connector Pinouts	https://lt1swap.com/E38 ECM Connector Pinouts.htm	—	—	—