Lexus LS400 1989-97 (1UZ-FE non-VVTi) → Motorsport Electronics ME360 (auto)

Lexus LS400 1989-97 (1UZ-FE non-VVTi) — Motorsport Electronics — ME360

⚠ 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	1: read the Findings page before cutting any wire
Size of the job	55 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-A-12	SP-14V-1	0.85	☐	☐	☐	☐	☐	☐	☐
W2	OEM-A-13	SP-14V-1	0.85	☐	☐	☐	☐	☐	☐	☐
W3	SP-14V-1	ME360-C1-15	0.85	☐	☐	☐	☐	☐	☐	☐
W4	SP-14V-1	ME360-C1-64	0.85	☐	☐	☐	☐	☐	☐	☐
W5	OEM-A-22	SP-GND-1	0.85	☐	☐	☐	☐	☐	☐	☐
W6	OEM-D-13	SP-GND-1	0.85	☐	☐	☐	☐	☐	☐	☐
W7	OEM-D-26	SP-GND-1	0.85	☐	☐	☐	☐	☐	☐	☐
W8	SP-GND-1	ME360-C1-10	0.85	☐	☐	☐	☐	☐	☐	☐
W9	SP-GND-1	ME360-C1-61	0.85	☐	☐	☐	☐	☐	☐	☐
W10	SP-GND-1	ME360-C1-89	0.85	☐	☐	☐	☐	☐	☐	☐
W11	SP-GND-1	ME360-C1-90	0.85	☐	☐	☐	☐	☐	☐	☐
W12	OEM-A-18	SP-0V-1	0.5	☐	☐	☐	☐	☐	☐	☐
W13	OEM-C-15	SP-0V-1	0.5	☐	☐	☐	☐	☐	☐	☐
W14	OEM-C-16	SP-0V-1	0.5	☐	☐	☐	☐	☐	☐	☐
W15	SP-0V-1	ME360-C1-52	0.5	☐	☐	☐	☐	☐	☐	☐
W16	SP-0V-1	ME360-C1-84	0.5	☐	☐	☐	☐	☐	☐	☐
W17	OEM-A-11	ME360-C1-45	0.5	☐	☐	☐	☐	☐	☐	☐
W18	OEM-C-8	ME360-C1-80	0.5	☐	☐	☐	☐	☐	☐	☐
W19	OEM-C-7	ME360-C1-22	0.5	☐	☐	☐	☐	☐	☐	☐
W20	OEM-C-6	ME360-C1-23	0.5	☐	☐	☐	☐	☐	☐	☐
W21	OEM-C-3	ME360-C1-53	0.5	☐	☐	☐	☐	☐	☐	☐
W22	OEM-C-5	ME360-C1-32	0.5	☐	☐	☐	☐	☐	☐	☐
W23	OEM-C-13	ME360-C1-31	0.5	☐	☐	☐	☐	☐	☐	☐
W24	OEM-D-12	ME360-C1-63	0.5	☐	☐	☐	☐	☐	☐	☐
W25	OEM-D-11	ME360-C1-4	0.5	☐	☐	☐	☐	☐	☐	☐
W26	OEM-D-24	ME360-C1-33	0.5	☐	☐	☐	☐	☐	☐	☐
W27	OEM-D-25	ME360-C1-3	0.5	☐	☐	☐	☐	☐	☐	☐
W28	OEM-A-4	ME360-C1-26	0.5	☐	☐	☐	☐	☐	☐	☐
W29	OEM-A-5	ME360-C1-86	0.5	☐	☐	☐	☐	☐	☐	☐
W30	OEM-B-4	ME360-C1-73	0.5	☐	☐	☐	☐	☐	☐	☐
W31	OEM-B-6	ME360-C1-12	0.5	☐	☐	☐	☐	☐	☐	☐
W32	OEM-B-7	ME360-C1-74	0.5	☐	☐	☐	☐	☐	☐	☐
W33	OEM-D-19	ME360-C1-16	0.5	☐	☐	☐	☐	☐	☐	☐
W34	OEM-D-20	ME360-C1-44	0.5	☐	☐	☐	☐	☐	☐	☐
W35	OEM-D-17	ME360-C1-69	0.5	☐	☐	☐	☐	☐	☐	☐
W36	OEM-D-8	ME360-C1-39	0.5	☐	☐	☐	☐	☐	☐	☐
W37	OEM-D-7	ME360-C1-37	0.5	☐	☐	☐	☐	☐	☐	☐
W38	OEM-D-6	ME360-C1-42	0.5	☐	☐	☐	☐	☐	☐	☐
W39	OEM-D-5	ME360-C1-72	0.5	☐	☐	☐	☐	☐	☐	☐
W40	OEM-B-5	ME360-C1-43	0.5	☐	☐	☐	☐	☐	☐	☐
W41	OEM-B-8	ME360-C1-13	0.5	☐	☐	☐	☐	☐	☐	☐
W42	OEM-D-21	ME360-C1-75	0.5	☐	☐	☐	☐	☐	☐	☐
W43	OEM-D-22	ME360-C1-40	0.5	☐	☐	☐	☐	☐	☐	☐
W44	OEM-D-4	ME360-C1-9	0.5	☐	☐	☐	☐	☐	☐	☐
W45	OEM-A-17	ME360-C1-56	0.5	☐	☐	☐	☐	☐	☐	☐
W46	OEM-A-6	ME360-C1-17	0.5	☐	☐	☐	☐	☐	☐	☐
W47	OEM-B-11	ME360-C1-18	0.5	☐	☐	☐	☐	☐	☐	☐
W48	OEM-A-16	ME360-C1-57	0.5	☐	☐	☐	☐	☐	☐	☐
W49	OEM-A-7	ME360-C1-77	0.5	☐	☐	☐	☐	☐	☐	☐
W50	OEM-C-2	ME360-C1-6	0.5	☐	☐	☐	☐	☐	☐	☐
W51	OEM-C-10	ME360-C1-7	0.5	☐	☐	☐	☐	☐	☐	☐
W52	OEM-A-19	ME360-C1-8	0.5	☐	☐	☐	☐	☐	☐	☐
W53	OEM-A-9	ME360-C1-5	0.5	☐	☐	☐	☐	☐	☐	☐
W54	OEM-A-20	ME360-C1-62	0.5	☐	☐	☐	☐	☐	☐	☐
W55	OEM-A-14	ME360-C1-34	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	ME360-C1-15	ME360-C1-10	open (OL)	+12 V supply must not touch power ground
2	ME360-C1-15	ME360-C1-52	open (OL)	+12 V supply must not touch sensor ground
3	ME360-C1-45	ME360-C1-10	open (OL)	5 V sensor reference must not touch power ground
4	ME360-C1-45	ME360-C1-52	open (OL)	5 V sensor reference must not touch sensor ground
5	ME360-C1-45	ME360-C1-15	open (OL)	5 V sensor reference must not touch +12 V supply

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

Revisions

Rev	Label	By	Date
No revisions yet.

Schematic

Connectors

ME360-C1

Cavity	Function	Signal	Wire	Colour	Gauge (mm²)	Destination	Terminal	Seal	Plug
1	COIL 4	—	—	—	—	—	—	—	—
10	GROUND CHASSIS	—	W8	—	0.85	SP-GND-1	—	—	—
11	EGT 1	—	—	—	—	—	—	—	—
12	LOW SIDE 2	—	W31	—	0.5	OEM-B-6	—	—	—
13	LOW SIDE RELAY 15	—	W41	—	0.5	OEM-B-8	—	—	—
14	LSU +12V	—	—	—	—	—	—	—	—
15	IGN +12V	—	W3	—	0.85	SP-14V-1	—	—	—
16	LSU HEATER -VE	—	W33	—	0.5	OEM-D-19	—	—	—
17	ANA VOLT 3	—	W46	—	0.5	OEM-A-6	—	—	—
18	ANA VOLT 4	—	W47	—	0.5	OEM-B-11	—	—	—
19	LSU UN	—	—	—	—	—	—	—	—
2	COIL 3	—	—	—	—	—	—	—	—
20	LSU VM	—	—	—	—	—	—	—	—
21	CAN 1 HIGH	—	—	—	—	—	—	—	—
22	CAM A VR+	—	W19	—	0.5	OEM-C-7	—	—	—
23	CAM A VR-	—	W20	—	0.5	OEM-C-6	—	—	—
24	SERIAL 1 GROUND	—	—	—	—	—	—	—	—
25	SERIAL 1 TX	—	—	—	—	—	—	—	—
26	ANA VOLT 1	—	W28	—	0.5	OEM-A-4	—	—	—
28	INJECTOR 5	—	—	—	—	—	—	—	—
3	INJECTOR 4	—	W27	—	0.5	OEM-D-25	—	—	—
31	COIL 2	—	W23	—	0.5	OEM-C-13	—	—	—
32	COIL 1	—	W22	—	0.5	OEM-C-5	—	—	—
33	INJECTOR 3	—	W26	—	0.5	OEM-D-24	—	—	—
34	DIG_IN 6	—	W55	—	0.5	OEM-A-14	—	—	—
35	USB D+	—	—	—	—	—	—	—	—
36	USB D-	—	—	—	—	—	—	—	—
37	LOW SIDE RELAY 11	—	W37	—	0.5	OEM-D-7	—	—	—
38	USB VBUS	—	—	—	—	—	—	—	—
39	LOW SIDE 6	—	W36	—	0.5	OEM-D-8	—	—	—
4	INJECTOR 2	—	W25	—	0.5	OEM-D-11	—	—	—
40	LOW SIDE RELAY 17	—	W43	—	0.5	OEM-D-22	—	—	—
41	USB GROUND	—	—	—	—	—	—	—	—
42	LOW SIDE RELAY 12	—	W38	—	0.5	OEM-D-6	—	—	—
43	LOW SIDE RELAY 14	—	W40	—	0.5	OEM-B-5	—	—	—
44	LOW SIDE 4	—	W34	—	0.5	OEM-D-20	—	—	—
45	5V REF	—	W17	—	0.5	OEM-A-11	—	—	—
46	5V REF	—	—	—	—	—	—	—	—
49	LSU IA	—	—	—	—	—	—	—	—
5	DIG_IN 4	—	W53	—	0.5	OEM-A-9	—	—	—
50	LSU IP	—	—	—	—	—	—	—	—
51	CAN 1 LOW	—	—	—	—	—	—	—	—
52	SENSORS GROUND	—	W15	—	0.5	SP-0V-1	—	—	—
53	KNOCK 1 SIGNAL	—	W21	—	0.5	OEM-C-3	—	—	—
55	SERIAL 1 RX	—	—	—	—	—	—	—	—
56	ANA VOLT 2	—	W45	—	0.5	OEM-A-17	—	—	—
57	ANA TEMP 2	—	W48	—	0.5	OEM-A-16	—	—	—
58	INJECTOR 6	—	—	—	—	—	—	—	—
59	COIL 5	—	—	—	—	—	—	—	—
6	DIG_IN 1	—	W50	—	0.5	OEM-C-2	—	—	—
60	COIL 6	—	—	—	—	—	—	—	—
61	GROUND	—	W9	—	0.85	SP-GND-1	—	—	—
62	DIG_IN 5	—	W54	—	0.5	OEM-A-20	—	—	—
63	INJECTOR 1	—	W24	—	0.5	OEM-D-12	—	—	—
64	VBAT	—	W4	—	0.85	SP-14V-1	—	—	—
65	H-BRIDGE A OUT 1	—	—	—	—	—	—	—	—
66	H-BRIDGE A OUT 2	—	—	—	—	—	—	—	—
67	Stepper 1 / A1	—	—	—	—	—	—	—	—
68	Stepper 2 / A2	—	—	—	—	—	—	—	—
69	LOW SIDE 5	—	W35	—	0.5	OEM-D-17	—	—	—
7	DIG_IN 2	—	W51	—	0.5	OEM-C-10	—	—	—
70	Stepper 3 / B1	—	—	—	—	—	—	—	—
71	Stepper 4 / B2	—	—	—	—	—	—	—	—
72	LOW SIDE RELAY 13	—	W39	—	0.5	OEM-D-5	—	—	—
73	LOW SIDE 1	—	W30	—	0.5	OEM-B-4	—	—	—
74	LOW SIDE 3	—	W32	—	0.5	OEM-B-7	—	—	—
75	LOW SIDE RELAY 16	—	W42	—	0.5	OEM-D-21	—	—	—
76	5V REF	—	—	—	—	—	—	—	—
77	ANA TEMP 3	—	W49	—	0.5	OEM-A-7	—	—	—
79	TACHOMETER	—	—	—	—	—	—	—	—
8	DIG_IN 3	—	W52	—	0.5	OEM-A-19	—	—	—
80	CRANK VR+	—	W18	—	0.5	OEM-C-8	—	—	—
81	CRANK VR-	—	—	—	—	—	—	—	—
82	CAM B VR+	—	—	—	—	—	—	—	—
83	CAM B VR-	—	—	—	—	—	—	—	—
84	Sensor Ground	—	W16	—	0.5	SP-0V-1	—	—	—
86	ANA TEMP 1	—	W29	—	0.5	OEM-A-5	—	—	—
89	GROUND	—	W10	—	0.85	SP-GND-1	—	—	—
9	LOW SIDE RELAY 18	—	W44	—	0.5	OEM-D-4	—	—	—
90	GROUND	—	W11	—	0.85	SP-GND-1	—	—	—

OEM-A

Cavity	Function	Signal	Wire	Colour	Gauge (mm²)	Destination	Terminal	Seal	Plug
1	Ignition switch (IGSW)	—	—	—	—	—	—	—	—
11	Sensor supply +5V (VC)	—	W17	—	0.5	ME360-C1-45	—	—	—
12	EFI main relay (B+)	—	W1	—	0.85	SP-14V-1	—	—	—
13	EFI main relay (B1+)	—	W2	—	0.85	SP-14V-1	—	—	—
14	Neutral start switch (NSW)	—	W55	—	0.5	ME360-C1-34	—	—	—
16	Intake air temperature (THA)	—	W48	—	0.5	ME360-C1-57	—	—	—
17	O2 right front (OXR1)	—	W45	—	0.5	ME360-C1-56	—	—	—
18	Sensor ground (E2)	—	W12	—	0.5	SP-0V-1	—	—	—
19	Vehicle speed (SPD)	—	W52	—	0.5	ME360-C1-8	—	—	—
2	Starter signal (STA)	—	—	—	—	—	—	—	—
20	Diagnostic test 2 (TE2)	—	W54	—	0.5	ME360-C1-62	—	—	—
22	Power ground (E1)	—	W5	—	0.85	SP-GND-1	—	—	—
4	Throttle position (VTA1)	—	W28	—	0.5	ME360-C1-26	—	—	—
5	Coolant temperature (THW)	—	W29	—	0.5	ME360-C1-86	—	—	—
6	O2 left front (OXL1)	—	W46	—	0.5	ME360-C1-17	—	—	—
7	EGR temperature sensor	—	W49	—	0.5	ME360-C1-77	—	—	—
8	Knock/shield (KS)	—	—	—	—	—	—	—	—
9	Diagnostic test 1 (TE1)	—	W53	—	0.5	ME360-C1-5	—	—	—

OEM-B

Cavity	Function	Signal	Wire	Colour	Gauge (mm²)	Destination	Terminal	Seal	Plug
11	O2 right rear (OXR2)	—	W47	—	0.5	ME360-C1-18	—	—	—
19	Stop light switch (BK)	—	—	—	—	—	—	—	—
20	A/T kickdown switch (KD)	—	—	—	—	—	—	—	—
23	A/C request (AC)	—	—	—	—	—	—	—	—
24	O2 left rear (OXL2)	—	—	—	—	—	—	—	—
26	Battery constant (BATT)	—	—	—	—	—	—	—	—
4	EFI main relay control (MREL)	—	W30	—	0.5	ME360-C1-73	—	—	—
5	Check-engine lamp (W)	—	W40	—	0.5	ME360-C1-43	—	—	—
6	Fuel pump relay (FPR)	—	W31	—	0.5	ME360-C1-12	—	—	—
7	A/C clutch relay (ACMG)	—	W32	—	0.5	ME360-C1-74	—	—	—
8	Fuel pump control (FC)	—	W41	—	0.5	ME360-C1-13	—	—	—

OEM-C

Cavity	Function	Signal	Wire	Colour	Gauge (mm²)	Destination	Terminal	Seal	Plug
1	TPS idle switch (IDL)	—	—	—	—	—	—	—	—
10	Igniter 2 feedback (IGF2)	—	W51	—	0.5	ME360-C1-7	—	—	—
11	Knock sensor 2 (KNK2)	—	—	—	—	—	—	—	—
12	Check connector VF2	—	—	—	—	—	—	—	—
13	Ignition 2 (IGT2)	—	W23	—	0.5	ME360-C1-31	—	—	—
15	Cam sensor ground (G-)	—	W13	—	0.5	SP-0V-1	—	—	—
16	Crank sensor - (NE-)	—	W14	—	0.5	SP-0V-1	—	—	—
2	Igniter 1 feedback (IGF1)	—	W50	—	0.5	ME360-C1-6	—	—	—
3	Knock sensor 1 (KNK1)	—	W21	—	0.5	ME360-C1-53	—	—	—
4	Check connector VF1	—	—	—	—	—	—	—	—
5	Ignition 1 (IGT1)	—	W22	—	0.5	ME360-C1-32	—	—	—
6	Cam sensor 2 + (G2+)	—	W20	—	0.5	ME360-C1-23	—	—	—
7	Cam sensor 1 + (G1+)	—	W19	—	0.5	ME360-C1-22	—	—	—
8	Crank sensor + (NE+)	—	W18	—	0.5	ME360-C1-80	—	—	—

OEM-D

Cavity	Function	Signal	Wire	Colour	Gauge (mm²)	Destination	Terminal	Seal	Plug
11	Injector 2&8 (#20)	—	W25	—	0.5	ME360-C1-4	—	—	—
12	Injector 1&7 (#10)	—	W24	—	0.5	ME360-C1-63	—	—	—
13	Power ground (E01)	—	W6	—	0.85	SP-GND-1	—	—	—
17	Cold start injector 1 (STJ1)	—	W35	—	0.5	ME360-C1-69	—	—	—
19	O2 heater 2 (HT2)	—	W33	—	0.5	ME360-C1-16	—	—	—
20	O2 heater 1 (HT1)	—	W34	—	0.5	ME360-C1-44	—	—	—
21	EGR solenoid	—	W42	—	0.5	ME360-C1-75	—	—	—
22	Fuel pressure-up VSV (PR)	—	W43	—	0.5	ME360-C1-40	—	—	—
24	Injector 3&5 (#40)	—	W26	—	0.5	ME360-C1-33	—	—	—
25	Injector 4&6 (#30)	—	W27	—	0.5	ME360-C1-3	—	—	—
26	Power ground (E02)	—	W7	—	0.85	SP-GND-1	—	—	—
4	Cold start injector (STJ)	—	W44	—	0.5	ME360-C1-9	—	—	—
5	ISC stepper coil 4 (ISC4)	—	W39	—	0.5	ME360-C1-72	—	—	—
6	ISC stepper coil 3 (ISC3)	—	W38	—	0.5	ME360-C1-42	—	—	—
7	ISC stepper coil 2 (ISC2)	—	W37	—	0.5	ME360-C1-37	—	—	—
8	ISC stepper coil 1 (ISC1)	—	W36	—	0.5	ME360-C1-39	—	—	—

SP-0V

Cavity	Function	Signal	Wire	Colour	Gauge (mm²)	Destination	Terminal	Seal	Plug
1	—	—	W12	—	0.5	OEM-A-18	—	—	—
1	—	—	W13	—	0.5	OEM-C-15	—	—	—
1	—	—	W14	—	0.5	OEM-C-16	—	—	—
1	—	—	W15	—	0.5	ME360-C1-52	—	—	—
1	—	—	W16	—	0.5	ME360-C1-84	—	—	—

SP-14V

Cavity	Function	Signal	Wire	Colour	Gauge (mm²)	Destination	Terminal	Seal	Plug
1	—	—	W1	—	0.85	OEM-A-12	—	—	—
1	—	—	W2	—	0.85	OEM-A-13	—	—	—
1	—	—	W3	—	0.85	ME360-C1-15	—	—	—
1	—	—	W4	—	0.85	ME360-C1-64	—	—	—

SP-GND

Cavity	Function	Signal	Wire	Colour	Gauge (mm²)	Destination	Terminal	Seal	Plug
1	—	—	W5	—	0.85	OEM-A-22	—	—	—
1	—	—	W6	—	0.85	OEM-D-13	—	—	—
1	—	—	W7	—	0.85	OEM-D-26	—	—	—
1	—	—	W8	—	0.85	ME360-C1-10	—	—	—
1	—	—	W9	—	0.85	ME360-C1-61	—	—	—
1	—	—	W10	—	0.85	ME360-C1-89	—	—	—
1	—	—	W11	—	0.85	ME360-C1-90	—	—	—

Pin map

OEM point	OEM function	OEM family	Target point	Target function	Target family	Evidence
OEM-A-1	Ignition switch (IGSW)	digital_in	—	—	—	single_source
OEM-A-11	Sensor supply +5V (VC)	vref	ME360-C1-45	5V REF	vref	single_source
OEM-A-12	EFI main relay (B+)	power_in	ME360-C1-15 + ME360-C1-64	IGN +12V + VBAT	power_in	single_source
OEM-A-13	EFI main relay (B1+)	power_in	ME360-C1-15 + ME360-C1-64	IGN +12V + VBAT	power_in	single_source
OEM-A-14	Neutral start switch (NSW)	digital_in	ME360-C1-34	DIG_IN 6	digital_in	single_source
OEM-A-16	Intake air temperature (THA)	temp_in	ME360-C1-57	ANA TEMP 2	temp_in	single_source
OEM-A-17	O2 right front (OXR1)	lambda_nb_in	ME360-C1-56	ANA VOLT 2	analog_in	single_source
OEM-A-18	Sensor ground (E2)	sensor_ground	ME360-C1-52 + ME360-C1-84	SENSORS GROUND + Sensor Ground	sensor_ground	single_source
OEM-A-19	Vehicle speed (SPD)	digital_in	ME360-C1-8	DIG_IN 3	digital_in	single_source
OEM-A-2	Starter signal (STA)	digital_in	—	—	—	single_source
OEM-A-20	Diagnostic test 2 (TE2)	digital_in	ME360-C1-62	DIG_IN 5	digital_in	single_source
OEM-A-22	Power ground (E1)	ground	ME360-C1-10 + ME360-C1-61 + ME360-C1-89 + ME360-C1-90	GROUND CHASSIS + GROUND + GROUND + GROUND	ground	single_source
OEM-A-4	Throttle position (VTA1)	analog_in	ME360-C1-26	ANA VOLT 1	analog_in	single_source
OEM-A-5	Coolant temperature (THW)	temp_in	ME360-C1-86	ANA TEMP 1	temp_in	single_source
OEM-A-6	O2 left front (OXL1)	lambda_nb_in	ME360-C1-17	ANA VOLT 3	analog_in	single_source
OEM-A-7	EGR temperature sensor	temp_in	ME360-C1-77	ANA TEMP 3	temp_in	single_source
OEM-A-8	Knock/shield (KS)	knock_in	—	—	—	single_source
OEM-A-9	Diagnostic test 1 (TE1)	digital_in	ME360-C1-5	DIG_IN 4	digital_in	single_source
OEM-B-11	O2 right rear (OXR2)	lambda_nb_in	ME360-C1-18	ANA VOLT 4	analog_in	single_source
OEM-B-19	Stop light switch (BK)	digital_in	—	—	—	single_source
OEM-B-20	A/T kickdown switch (KD)	digital_in	—	—	—	single_source
OEM-B-23	A/C request (AC)	digital_in	—	—	—	single_source
OEM-B-24	O2 left rear (OXL2)	lambda_nb_in	—	—	—	single_source
OEM-B-26	Battery constant (BATT)	power_in	—	—	—	single_source
OEM-B-4	EFI main relay control (MREL)	low_side_out	ME360-C1-73	LOW SIDE 1	low_side_out	single_source
OEM-B-5	Check-engine lamp (W)	low_side_out	ME360-C1-43	LOW SIDE RELAY 14	low_side_out	single_source
OEM-B-6	Fuel pump relay (FPR)	low_side_out	ME360-C1-12	LOW SIDE 2	low_side_out	single_source
OEM-B-7	A/C clutch relay (ACMG)	low_side_out	ME360-C1-74	LOW SIDE 3	low_side_out	single_source
OEM-B-8	Fuel pump control (FC)	low_side_out	ME360-C1-13	LOW SIDE RELAY 15	low_side_out	single_source
OEM-C-1	TPS idle switch (IDL)	digital_in	—	—	—	single_source
OEM-C-10	Igniter 2 feedback (IGF2)	digital_in	ME360-C1-7	DIG_IN 2	digital_in	single_source
OEM-C-11	Knock sensor 2 (KNK2)	knock_in	—	—	—	single_source
OEM-C-12	Check connector VF2	analog_out	—	—	—	single_source
OEM-C-13	Ignition 2 (IGT2)	ignition_out	ME360-C1-31	COIL 2	ignition_out	single_source
OEM-C-15	Cam sensor ground (G-)	sensor_ground	ME360-C1-52 + ME360-C1-84	SENSORS GROUND + Sensor Ground	sensor_ground	single_source
OEM-C-16	Crank sensor - (NE-)	sensor_ground	ME360-C1-52 + ME360-C1-84	SENSORS GROUND + Sensor Ground	sensor_ground	single_source
OEM-C-2	Igniter 1 feedback (IGF1)	digital_in	ME360-C1-6	DIG_IN 1	digital_in	single_source
OEM-C-3	Knock sensor 1 (KNK1)	knock_in	ME360-C1-53	KNOCK 1 SIGNAL	knock_in	single_source
OEM-C-4	Check connector VF1	analog_out	—	—	—	single_source
OEM-C-5	Ignition 1 (IGT1)	ignition_out	ME360-C1-32	COIL 1	ignition_out	single_source
OEM-C-6	Cam sensor 2 + (G2+)	trigger_in	ME360-C1-23	CAM A VR-	trigger_in	single_source
OEM-C-7	Cam sensor 1 + (G1+)	trigger_in	ME360-C1-22	CAM A VR+	trigger_in	single_source
OEM-C-8	Crank sensor + (NE+)	trigger_in	ME360-C1-80	CRANK VR+	trigger_in	single_source
OEM-D-11	Injector 2&8 (#20)	injector_out	ME360-C1-4	INJECTOR 2	injector_out	single_source
OEM-D-12	Injector 1&7 (#10)	injector_out	ME360-C1-63	INJECTOR 1	injector_out	single_source
OEM-D-13	Power ground (E01)	ground	ME360-C1-10 + ME360-C1-61 + ME360-C1-89 + ME360-C1-90	GROUND CHASSIS + GROUND + GROUND + GROUND	ground	single_source
OEM-D-17	Cold start injector 1 (STJ1)	low_side_out	ME360-C1-69	LOW SIDE 5	low_side_out	single_source
OEM-D-19	O2 heater 2 (HT2)	low_side_out	ME360-C1-16	LSU HEATER -VE	low_side_out	single_source
OEM-D-20	O2 heater 1 (HT1)	low_side_out	ME360-C1-44	LOW SIDE 4	low_side_out	single_source
OEM-D-21	EGR solenoid	low_side_out	ME360-C1-75	LOW SIDE RELAY 16	low_side_out	single_source
OEM-D-22	Fuel pressure-up VSV (PR)	low_side_out	ME360-C1-40	LOW SIDE RELAY 17	low_side_out	single_source
OEM-D-24	Injector 3&5 (#40)	injector_out	ME360-C1-33	INJECTOR 3	injector_out	single_source
OEM-D-25	Injector 4&6 (#30)	injector_out	ME360-C1-3	INJECTOR 4	injector_out	single_source
OEM-D-26	Power ground (E02)	ground	ME360-C1-10 + ME360-C1-61 + ME360-C1-89 + ME360-C1-90	GROUND CHASSIS + GROUND + GROUND + GROUND	ground	single_source
OEM-D-4	Cold start injector (STJ)	low_side_out	ME360-C1-9	LOW SIDE RELAY 18	low_side_out	single_source
OEM-D-5	ISC stepper coil 4 (ISC4)	low_side_out	ME360-C1-72	LOW SIDE RELAY 13	low_side_out	single_source
OEM-D-6	ISC stepper coil 3 (ISC3)	low_side_out	ME360-C1-42	LOW SIDE RELAY 12	low_side_out	single_source
OEM-D-7	ISC stepper coil 2 (ISC2)	low_side_out	ME360-C1-37	LOW SIDE RELAY 11	low_side_out	single_source
OEM-D-8	ISC stepper coil 1 (ISC1)	low_side_out	ME360-C1-39	LOW SIDE 6	low_side_out	single_source

Cut list

Wire	From	To	Gauge (mm²)	Length	Signal	Ident
W1	OEM-A-12	SP-14V-1	0.85	no route	EFI main relay (B+)	—
W2	OEM-A-13	SP-14V-1	0.85	no route	EFI main relay (B1+)	—
W3	SP-14V-1	ME360-C1-15	0.85	no route	IGN +12V	—
W4	SP-14V-1	ME360-C1-64	0.85	no route	VBAT	—
W5	OEM-A-22	SP-GND-1	0.85	no route	Power ground (E1)	—
W6	OEM-D-13	SP-GND-1	0.85	no route	Power ground (E01)	—
W7	OEM-D-26	SP-GND-1	0.85	no route	Power ground (E02)	—
W8	SP-GND-1	ME360-C1-10	0.85	no route	GROUND CHASSIS	—
W9	SP-GND-1	ME360-C1-61	0.85	no route	GROUND	—
W10	SP-GND-1	ME360-C1-89	0.85	no route	GROUND	—
W11	SP-GND-1	ME360-C1-90	0.85	no route	GROUND	—
W12	OEM-A-18	SP-0V-1	0.5	no route	Sensor ground (E2)	—
W13	OEM-C-15	SP-0V-1	0.5	no route	Cam sensor ground (G-)	—
W14	OEM-C-16	SP-0V-1	0.5	no route	Crank sensor - (NE-)	—
W15	SP-0V-1	ME360-C1-52	0.5	no route	SENSORS GROUND	—
W16	SP-0V-1	ME360-C1-84	0.5	no route	Sensor Ground	—
W17	OEM-A-11	ME360-C1-45	0.5	no route	Sensor supply +5V (VC)	—
W18	OEM-C-8	ME360-C1-80	0.5	no route	Crank sensor + (NE+)	—
W19	OEM-C-7	ME360-C1-22	0.5	no route	Cam sensor 1 + (G1+)	—
W20	OEM-C-6	ME360-C1-23	0.5	no route	Cam sensor 2 + (G2+)	—
W21	OEM-C-3	ME360-C1-53	0.5	no route	Knock sensor 1 (KNK1)	—
W22	OEM-C-5	ME360-C1-32	0.5	no route	Ignition 1 (IGT1)	—
W23	OEM-C-13	ME360-C1-31	0.5	no route	Ignition 2 (IGT2)	—
W24	OEM-D-12	ME360-C1-63	0.5	no route	Injector 1&7 (#10)	—
W25	OEM-D-11	ME360-C1-4	0.5	no route	Injector 2&8 (#20)	—
W26	OEM-D-24	ME360-C1-33	0.5	no route	Injector 3&5 (#40)	—
W27	OEM-D-25	ME360-C1-3	0.5	no route	Injector 4&6 (#30)	—
W28	OEM-A-4	ME360-C1-26	0.5	no route	Throttle position (VTA1)	—
W29	OEM-A-5	ME360-C1-86	0.5	no route	Coolant temperature (THW)	—
W30	OEM-B-4	ME360-C1-73	0.5	no route	EFI main relay control (MREL)	—
W31	OEM-B-6	ME360-C1-12	0.5	no route	Fuel pump relay (FPR)	—
W32	OEM-B-7	ME360-C1-74	0.5	no route	A/C clutch relay (ACMG)	—
W33	OEM-D-19	ME360-C1-16	0.5	no route	O2 heater 2 (HT2)	—
W34	OEM-D-20	ME360-C1-44	0.5	no route	O2 heater 1 (HT1)	—
W35	OEM-D-17	ME360-C1-69	0.5	no route	Cold start injector 1 (STJ1)	—
W36	OEM-D-8	ME360-C1-39	0.5	no route	ISC stepper coil 1 (ISC1)	—
W37	OEM-D-7	ME360-C1-37	0.5	no route	ISC stepper coil 2 (ISC2)	—
W38	OEM-D-6	ME360-C1-42	0.5	no route	ISC stepper coil 3 (ISC3)	—
W39	OEM-D-5	ME360-C1-72	0.5	no route	ISC stepper coil 4 (ISC4)	—
W40	OEM-B-5	ME360-C1-43	0.5	no route	Check-engine lamp (W)	—
W41	OEM-B-8	ME360-C1-13	0.5	no route	Fuel pump control (FC)	—
W42	OEM-D-21	ME360-C1-75	0.5	no route	EGR solenoid	—
W43	OEM-D-22	ME360-C1-40	0.5	no route	Fuel pressure-up VSV (PR)	—
W44	OEM-D-4	ME360-C1-9	0.5	no route	Cold start injector (STJ)	—
W45	OEM-A-17	ME360-C1-56	0.5	no route	O2 right front (OXR1)	—
W46	OEM-A-6	ME360-C1-17	0.5	no route	O2 left front (OXL1)	—
W47	OEM-B-11	ME360-C1-18	0.5	no route	O2 right rear (OXR2)	—
W48	OEM-A-16	ME360-C1-57	0.5	no route	Intake air temperature (THA)	—
W49	OEM-A-7	ME360-C1-77	0.5	no route	EGR temperature sensor	—
W50	OEM-C-2	ME360-C1-6	0.5	no route	Igniter 1 feedback (IGF1)	—
W51	OEM-C-10	ME360-C1-7	0.5	no route	Igniter 2 feedback (IGF2)	—
W52	OEM-A-19	ME360-C1-8	0.5	no route	Vehicle speed (SPD)	—
W53	OEM-A-9	ME360-C1-5	0.5	no route	Diagnostic test 1 (TE1)	—
W54	OEM-A-20	ME360-C1-62	0.5	no route	Diagnostic test 2 (TE2)	—
W55	OEM-A-14	ME360-C1-34	0.5	no route	Neutral start switch (NSW)	—

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 (2)

Severity	Code	Subject	Message
error	REQUIRED_UNMAPPED	OEM-A-1	Required OEM function "Ignition switch (IGSW)" (digital_in) is not connected to the new ECU.
info	UNMAPPED	OEM	10 optional OEM pins are not mapped: OEM-A-2 Starter signal (STA); OEM-A-8 Knock/shield (KS); OEM-B-19 Stop light switch (BK); OEM-B-20 A/T kickdown switch (KD); OEM-B-23 A/C request (AC); OEM-B-24 O2 left rear (OXL2); OEM-C-1 TPS idle switch (IDL); OEM-C-11 Knock sensor 2 (KNK2); OEM-C-12 Check connector VF2; OEM-C-4 Check connector VF1

Accepted (1)

Code	Subject	Reason	By
REQUIRED_UNMAPPED	OEM-B-26	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-A 1: Ignition switch (IGSW): key-on 12 V sense — optional in a swap (the main relay is energized from keyed 12 V, not from this pin); Motorsport Electronics ME360 has no dedicated key-on input Not wired: - OEM-B 26: Battery constant (BATT): Motorsport Electronics ME360 has no battery-constant input; not needed - OEM-C 11: Knock sensor 2 (KNK2): no free knock input on Motorsport Electronics ME360 - OEM-A 8: Knock/shield (KS): no free knock input on Motorsport Electronics ME360 - OEM-B 24: O2 left rear (OXL2): no free o2_narrowband/analog_0_5 on Motorsport Electronics ME360 - OEM-A 2: Starter signal (STA): no free switch_in/frequency_in/analog_0_5 on Motorsport Electronics ME360 - OEM-B 19: Stop light switch (BK): no free switch_in/frequency_in/analog_0_5 on Motorsport Electronics ME360 - OEM-B 20: A/T kickdown switch (KD): no free switch_in/frequency_in/analog_0_5 on Motorsport Electronics ME360 - OEM-B 23: A/C request (AC): no free switch_in/frequency_in/analog_0_5 on Motorsport Electronics ME360 - OEM-C 1: TPS idle switch (IDL): no free switch_in/frequency_in/analog_0_5 on Motorsport Electronics ME360 - OEM-C 4: Check connector VF1: no free analog_out on Motorsport Electronics ME360 - OEM-C 12: Check connector VF2: no free analog_out on Motorsport Electronics ME360

Sources

Reliability	Kind	Title	URL	Archive	Captured	SHA-256
4	vendor_doc	Motorsport Electronics GEN2 ME221/ME360/ME442 wire-in pinout	https://motorsport-electronics.co.uk/onlinehelp/html/ME442ME360ME221GEN2Wire-InPinout.html	—	—	—
2	community_copy	Lextreme: Adaptronic install for 1UZ-FE (Lexus LS400/SC400) — 4-plug A/B/C/D ECU pin table (1992 LS400)	https://www.lextreme.com/installation-of-an-adaptronic-ecu-for-a-lexus-ls400-sc400-1uzfe-engine/	—	—	—