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Lexus SC400 1998-2000 (1UZ-FE VVT-i) → MaxxECU MaxxECU GEN2 TRACK (auto)

Lexus SC400 1998-2000 (1UZ-FE VVT-i) — MaxxECU — MaxxECU GEN2 TRACK
Drawn by Michael Gnankou · Rev 0 · proposal · 2026-10-12

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.

Statusproposal · not yet verified: nobody has reported building and running this harness
Open errorsnone
Size of the job60 wires · 11 connectors · 0 part lines
ToolsCrimp and extraction tools for each terminal family (see Connectors) · wire strippers · multimeter · heat gun + heat-shrink
Order of work1. 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.

WireFromToGaugeColourCutLabelCrimp ACrimp BPin APin BContinuity
W1OEM-E15-16SP-14V-10.85☐☐☐☐☐☐☐
W2OEM-E15-7SP-14V-10.85☐☐☐☐☐☐☐
W3OEM-E15-8SP-14V-10.85☐☐☐☐☐☐☐
W4SP-14V-1MAXXECUGEN2T-MX1-250.85☐☐☐☐☐☐☐
W5SP-14V-1MAXXECUGEN2T-MX2-250.85☐☐☐☐☐☐☐
W6OEM-E13-17SP-GND-10.85☐☐☐☐☐☐☐
W7OEM-E14-21SP-GND-10.85☐☐☐☐☐☐☐
W8SP-GND-1MAXXECUGEN2T-MX1-90.85☐☐☐☐☐☐☐
W9SP-GND-1MAXXECUGEN2T-MX2-90.85☐☐☐☐☐☐☐
W10SP-GND-1MAXXECUGEN2T-MX3-90.85☐☐☐☐☐☐☐
W11OEM-E13-18SP-0V-10.5☐☐☐☐☐☐☐
W12OEM-E13-19SP-0V-10.5☐☐☐☐☐☐☐
W13SP-0V-1MAXXECUGEN2T-MX1-140.5☐☐☐☐☐☐☐
W14OEM-E13-2MAXXECUGEN2T-MX1-120.5☐☐☐☐☐☐☐
W15OEM-E14-23MAXXECUGEN2T-MX1-100.5☐☐☐☐☐☐☐
W16OEM-E14-22SP-0V-10.5☐☐☐☐☐☐☐
W17OEM-E14-10MAXXECUGEN2T-MX1-180.5☐☐☐☐☐☐☐
W18OEM-E14-18MAXXECUGEN2T-MX2-280.5☐☐☐☐☐☐☐
W19OEM-E14-17MAXXECUGEN2T-MX2-310.5☐☐☐☐☐☐☐
W20OEM-E14-11MAXXECUGEN2T-MX1-10.5☐☐☐☐☐☐☐
W21OEM-E14-12MAXXECUGEN2T-MX1-20.5☐☐☐☐☐☐☐
W22OEM-E14-13MAXXECUGEN2T-MX1-30.5☐☐☐☐☐☐☐
W23OEM-E14-14MAXXECUGEN2T-MX1-40.5☐☐☐☐☐☐☐
W24OEM-E14-15MAXXECUGEN2T-MX2-10.5☐☐☐☐☐☐☐
W25OEM-E14-16MAXXECUGEN2T-MX2-20.5☐☐☐☐☐☐☐
W26OEM-E14-25MAXXECUGEN2T-MX3-30.5☐☐☐☐☐☐☐
W27OEM-E14-26MAXXECUGEN2T-MX3-40.5☐☐☐☐☐☐☐
W28OEM-E13-5MAXXECUGEN2T-MX1-310.5☐☐☐☐☐☐☐
W29OEM-E13-6MAXXECUGEN2T-MX1-320.5☐☐☐☐☐☐☐
W30OEM-E14-1MAXXECUGEN2T-MX1-330.5☐☐☐☐☐☐☐
W31OEM-E14-2MAXXECUGEN2T-MX1-340.5☐☐☐☐☐☐☐
W32OEM-E14-3MAXXECUGEN2T-MX2-330.5☐☐☐☐☐☐☐
W33OEM-E14-4MAXXECUGEN2T-MX2-340.5☐☐☐☐☐☐☐
W34OEM-E14-5MAXXECUGEN2T-MX3-290.5☐☐☐☐☐☐☐
W35OEM-E14-6MAXXECUGEN2T-MX3-300.5☐☐☐☐☐☐☐
W36OEM-E14-7MAXXECUGEN2T-MX2-80.5☐☐☐☐☐☐☐
W37OEM-E14-8MAXXECUGEN2T-MX2-70.5☐☐☐☐☐☐☐
W38OEM-E15-9MAXXECUGEN2T-MX2-240.5☐☐☐☐☐☐☐
W39OEM-E11-19MAXXECUGEN2T-MX1-50.5☐☐☐☐☐☐☐
W40OEM-E14-20MAXXECUGEN2T-MX1-60.5☐☐☐☐☐☐☐
W41OEM-E13-10MAXXECUGEN2T-MX1-260.5☐☐☐☐☐☐☐
W42OEM-E13-13MAXXECUGEN2T-MX1-270.5☐☐☐☐☐☐☐
W43OEM-E13-21MAXXECUGEN2T-MX1-280.5☐☐☐☐☐☐☐
W44OEM-E13-20MAXXECUGEN2T-MX1-290.5☐☐☐☐☐☐☐
W45OEM-E13-9MAXXECUGEN2T-MX1-300.5☐☐☐☐☐☐☐
W46OEM-E13-14MAXXECUGEN2T-MX2-40.5☐☐☐☐☐☐☐
W47OEM-E15-10MAXXECUGEN2T-MX1-70.5☐☐☐☐☐☐☐
W48OEM-E15-5MAXXECUGEN2T-MX1-80.5☐☐☐☐☐☐☐
W49OEM-E11-7MAXXECUGEN2T-MX2-120.5☐☐☐☐☐☐☐
W50OEM-E11-8MAXXECUGEN2T-MX3-120.5☐☐☐☐☐☐☐
W51OEM-E13-3MAXXECUGEN2T-MX1-170.5☐☐☐☐☐☐☐
W52OEM-E13-4MAXXECUGEN2T-MX2-30.5☐☐☐☐☐☐☐
W53OEM-E11-18MAXXECUGEN2T-MX2-50.5☐☐☐☐☐☐☐
W54OEM-E11-27MAXXECUGEN2T-MX2-60.5☐☐☐☐☐☐☐
W55OEM-E13-11MAXXECUGEN2T-MX2-130.5☐☐☐☐☐☐☐
W56OEM-E13-12MAXXECUGEN2T-MX2-140.5☐☐☐☐☐☐☐
W57OEM-E13-22MAXXECUGEN2T-MX2-150.5☐☐☐☐☐☐☐
W58OEM-E14-27MAXXECUGEN2T-MX1-230.5☐☐☐☐☐☐☐
W59OEM-E14-28MAXXECUGEN2T-MX1-240.5☐☐☐☐☐☐☐
W60OEM-E11-17MAXXECUGEN2T-MX3-210.5☐☐☐☐☐☐☐

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 AProbe BExpectWhyReading
1MAXXECUGEN2T-MX1-12MAXXECUGEN2T-MX1-25open (OL)5 V sensor reference must not touch +12 V supply
2MAXXECUGEN2T-MX1-14MAXXECUGEN2T-MX1-12open (OL)sensor ground must not touch 5 V sensor reference
3MAXXECUGEN2T-MX1-14MAXXECUGEN2T-MX1-25open (OL)sensor ground must not touch +12 V supply
4MAXXECUGEN2T-MX1-9MAXXECUGEN2T-MX1-12open (OL)power ground must not touch 5 V sensor reference
5MAXXECUGEN2T-MX1-9MAXXECUGEN2T-MX1-25open (OL)power ground must not touch +12 V supply

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

Revisions

RevLabelByDate
No revisions yet.

Schematic

MAXXECUGEN2T-MX1MAXXECUGEN2T-MX2MAXXECUGEN2T-MX3OEM-E11OEM-E12OEM-E13OEM-E14OEM-E15SP-0VSP-14VSP-GND

Connectors

MAXXECUGEN2T-MX1

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Ignition 1—W20—0.5OEM-E14-11———
10Digital/VR 1 SIGNAL +—W15—0.5OEM-E14-23———
11Digital/VR 1 SIGNAL -————————
12Digital/VR 1 POWER SUPPLY—W14—0.5OEM-E13-2———
13Digital/VR 1 SHIELD————————
14SENSOR GND—W13—0.5SP-0V-1———
15CAN L————————
16CAN H————————
17GP out 5 (GND)—W51—0.5OEM-E13-3———
18Digital/VR 2 SIGNAL +—W17—0.5OEM-E14-10———
19Digital/VR 2 SIGNAL -————————
2Ignition 2—W21—0.5OEM-E14-12———
20Digital/VR 2 POWER SUPPLY————————
21Digital/VR 2 SHIELD————————
225V power supply————————
23Digital/VR 3 SIGNAL +—W58—0.5OEM-E14-27———
24Digital/VR 4 SIGNAL +—W59—0.5OEM-E14-28———
2512V supply 1—W4—0.85SP-14V-1———
26AIN 1—W41—0.5OEM-E13-10———
27AIN 2—W42—0.5OEM-E13-13———
28AIN 3—W43—0.5OEM-E13-21———
29AIN 4—W44—0.5OEM-E13-20———
3Ignition 3—W22—0.5OEM-E14-13———
30AIN 5—W45—0.5OEM-E13-9———
31INJECTOR 1—W28—0.5OEM-E13-5———
32INJECTOR 2—W29—0.5OEM-E13-6———
33INJECTOR 3—W30—0.5OEM-E14-1———
34INJECTOR 4—W31—0.5OEM-E14-2———
4Ignition 4—W23—0.5OEM-E14-14———
5GP out 1 (GND)—W39—0.5OEM-E11-19———
6GP out 2 (GND)—W40—0.5OEM-E14-20———
7GP out 3 (GND)—W47—0.5OEM-E15-10———
8GP out 4 (GND)—W48—0.5OEM-E15-5———
9Engine gnd—W8—0.85SP-GND-1———

MAXXECUGEN2T-MX2

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Ignition 5—W24—0.5OEM-E14-15———
10WBO2 Sensor 1 VS————————
11WBO2 Sensor 1 COM/VREF————————
12GP OUT 7 / WBO2 Sensor 1 H-—W49—0.5OEM-E11-7———
13AIN 9—W55—0.5OEM-E13-11———
14AIN 10—W56—0.5OEM-E13-12———
15AIN 11—W57—0.5OEM-E13-22———
16AIN 12————————
17AIN 13————————
18WBO2 sensor 1 RCAL————————
19WBO2 sensor 1 IP————————
2Ignition 6—W25—0.5OEM-E14-16———
2012V WBO2 sensor 1 H+————————
21WBO2 sensor 1 SHIELD————————
22AIN 14————————
23AIN 15————————
2412V supply 3—W38—0.5OEM-E15-9———
2512V supply 2—W5—0.85SP-14V-1———
26KNOCK1 SHIELD————————
27KNOCK 1-————————
28KNOCK 1+—W18—0.5OEM-E14-18———
29KNOCK 2 SHIELD————————
3GP out 6 (GND)—W52—0.5OEM-E13-4———
30KNOCK 2-————————
31KNOCK 2+—W19—0.5OEM-E14-17———
32AIN 16————————
33INJECTOR 5—W32—0.5OEM-E14-3———
34INJECTOR 6—W33—0.5OEM-E14-4———
4AIN 6—W46—0.5OEM-E13-14———
5AIN 7—W53—0.5OEM-E11-18———
6AIN 8—W54—0.5OEM-E11-27———
7GP out 13 (H-BRIDGE 1)—W37—0.5OEM-E14-8———
8GP out 14 (H-BRIDGE 1)—W36—0.5OEM-E14-7———
9Engine gnd—W9—0.85SP-GND-1———

MAXXECUGEN2T-MX3

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1GP out 15 (H-BRIDGE 2)————————
10WBO2 sensor 2 VS————————
11WBO2 sensor 2 COM/VREF————————
12GP Out 8 (GND) / WBO2 Sensor 2 H-—W50—0.5OEM-E11-8———
14GP OUT 9 (12V)————————
15GP OUT 10 (12V)————————
16GP OUT 11 (12V)————————
17GP OUT 12 (12V)————————
18WBO2 sensor 2 RCAL————————
19WBO2 sensor 2 IP————————
2GP out 16 (H-BRIDGE 2)————————
2012V WBO2 sensor 2 (H+)————————
21Digital/VR 5 SIGNAL +—W60—0.5OEM-E11-17———
22Digital/VR 5 SIGNAL -————————
23Digital/VR 5 SHIELD————————
24CAN 2 L————————
25CAN 2 H————————
26Digital/VR 6 SIGNAL +————————
27Digital/VR 6 SIGNAL -————————
28Digital/VR 6 SHIELD————————
29INJECTOR 7—W34—0.5OEM-E14-5———
3Ignition 7—W26—0.5OEM-E14-25———
30INJECTOR 8—W35—0.5OEM-E14-6———
4Ignition 8—W27—0.5OEM-E14-26———
9Engine gnd—W10—0.85SP-GND-1———

OEM-E11

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
17Starter signal (STA)—W60—0.5MAXXECUGEN2T-MX3-21———
18O2 sensor signal (bank unconfirmed)—W53—0.5MAXXECUGEN2T-MX2-5———
19VVT oil-control valve RH (OCR+)—W39—0.5MAXXECUGEN2T-MX1-5———
27O2 sensor signal (bank unconfirmed)—W54—0.5MAXXECUGEN2T-MX2-6———
28VVT oil-control valve RH (OCR−)————————
5Diagnostic test (TC)————————
7O2 sensor heater (bank unconfirmed)—W49—0.5MAXXECUGEN2T-MX2-12———
8O2 sensor heater (bank unconfirmed)—W50—0.5MAXXECUGEN2T-MX3-12———

OEM-E12

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
12Throttle magnetic clutch + (CL+)————————

OEM-E13

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
10MAF signal (VG)—W41—0.5MAXXECUGEN2T-MX1-26———
11O2 sensor signal (bank unconfirmed)—W55—0.5MAXXECUGEN2T-MX2-13———
12O2 sensor signal (bank unconfirmed)—W56—0.5MAXXECUGEN2T-MX2-14———
13Throttle position sensor 1 (VTA)—W42—0.5MAXXECUGEN2T-MX1-27———
14Engine coolant temp (THW)—W46—0.5MAXXECUGEN2T-MX2-4———
15VVT position sensor RH (VVR+)————————
16VVT position sensor LH (VVL+)————————
17ECU ground (E1)—W6—0.85SP-GND-1———
18Sensor ground (E2)—W11—0.5SP-0V-1———
19MAF ground (EVG)—W12—0.5SP-0V-1———
2+5V sensor reference (VC)—W14—0.5MAXXECUGEN2T-MX1-12———
20Throttle position sensor 2 (VTA2)—W44—0.5MAXXECUGEN2T-MX1-29———
21Accelerator pedal position 1 (VPA)—W43—0.5MAXXECUGEN2T-MX1-28———
22Intake air temp (THA)—W57—0.5MAXXECUGEN2T-MX2-15———
23VVT position sensor RH (VVR−)————————
24VVT position sensor LH (VVL−)————————
3O2 sensor heater (bank unconfirmed)—W51—0.5MAXXECUGEN2T-MX1-17———
4O2 sensor heater (bank unconfirmed)—W52—0.5MAXXECUGEN2T-MX2-3———
5Injector 1 (cyl 1)—W28—0.5MAXXECUGEN2T-MX1-31———
6Injector 2 (cyl 2)—W29—0.5MAXXECUGEN2T-MX1-32———
8Throttle magnetic clutch − (CL−)————————
9Accelerator pedal position 2 (VPA2)—W45—0.5MAXXECUGEN2T-MX1-30———

OEM-E14

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Injector 3 (cyl 3)—W30—0.5MAXXECUGEN2T-MX1-33———
10Camshaft position sensor (G2)—W17—0.5MAXXECUGEN2T-MX1-18———
11Ignition coil 1 (IGT1)—W20—0.5MAXXECUGEN2T-MX1-1———
12Ignition coil 2 (IGT2)—W21—0.5MAXXECUGEN2T-MX1-2———
13Ignition coil 3 (IGT3)—W22—0.5MAXXECUGEN2T-MX1-3———
14Ignition coil 4 (IGT4)—W23—0.5MAXXECUGEN2T-MX1-4———
15Ignition coil 5 (IGT5)—W24—0.5MAXXECUGEN2T-MX2-1———
16Ignition coil 6 (IGT6)—W25—0.5MAXXECUGEN2T-MX2-2———
17Knock sensor RH (KNKR)—W19—0.5MAXXECUGEN2T-MX2-31———
18Knock sensor LH (KNKL)—W18—0.5MAXXECUGEN2T-MX2-28———
19VVT oil-control valve LH (OCV−)————————
2Injector 4 (cyl 4)—W31—0.5MAXXECUGEN2T-MX1-34———
20VVT oil-control valve LH (OCV+)—W40—0.5MAXXECUGEN2T-MX1-6———
21Power/injector ground (E01)—W7—0.85SP-GND-1———
22Crank position sensor (NE−)—W16—0.5SP-0V-1———
23Crank position sensor (NE+)—W15—0.5MAXXECUGEN2T-MX1-10———
25Ignition coil 7 (IGT7)—W26—0.5MAXXECUGEN2T-MX3-3———
26Ignition coil 8 (IGT8)—W27—0.5MAXXECUGEN2T-MX3-4———
27Ignition confirmation 1 (IGF1)—W58—0.5MAXXECUGEN2T-MX1-23———
28Ignition confirmation 2 (IGF2)—W59—0.5MAXXECUGEN2T-MX1-24———
29ACIS induction VSV————————
3Injector 5 (cyl 5)—W32—0.5MAXXECUGEN2T-MX2-33———
4Injector 6 (cyl 6)—W33—0.5MAXXECUGEN2T-MX2-34———
5Injector 7 (cyl 7)—W34—0.5MAXXECUGEN2T-MX3-29———
6Injector 8 (cyl 8)—W35—0.5MAXXECUGEN2T-MX3-30———
7Throttle motor − (M−)—W36—0.5MAXXECUGEN2T-MX2-8———
8Throttle motor + (M+)—W37—0.5MAXXECUGEN2T-MX2-7———

OEM-E15

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Battery constant (+12V)————————
10EFI main relay control (MREL)—W47—0.5MAXXECUGEN2T-MX1-7———
11OBD-II / DLC3 data (SIL)————————
16ECM power (EFI relay +B)—W1—0.85SP-14V-1———
5Fuel pump relay control (FC)—W48—0.5MAXXECUGEN2T-MX1-8———
6Check engine light (W)————————
7ECM power feed (+BM)—W2—0.85SP-14V-1———
8ECM power (EFI relay +B1)—W3—0.85SP-14V-1———
9Ignition switch (+12V)—W38—0.5MAXXECUGEN2T-MX2-24———

SP-0V

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1——W11—0.5OEM-E13-18———
1——W12—0.5OEM-E13-19———
1——W13—0.5MAXXECUGEN2T-MX1-14———
1——W16—0.5OEM-E14-22———

SP-14V

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1——W1—0.85OEM-E15-16———
1——W2—0.85OEM-E15-7———
1——W3—0.85OEM-E15-8———
1——W4—0.85MAXXECUGEN2T-MX1-25———
1——W5—0.85MAXXECUGEN2T-MX2-25———

SP-GND

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1——W6—0.85OEM-E13-17———
1——W7—0.85OEM-E14-21———
1——W8—0.85MAXXECUGEN2T-MX1-9———
1——W9—0.85MAXXECUGEN2T-MX2-9———
1——W10—0.85MAXXECUGEN2T-MX3-9———

Pin map

OEM pointOEM functionOEM familyTarget pointTarget functionTarget familyWire colourEvidence
OEM-E11-17Starter signal (STA)digital_inMAXXECUGEN2T-MX3-21Digital/VR 5 SIGNAL +digital_incorroborated
OEM-E11-18O2 sensor signal (bank unconfirmed)lambda_nb_inMAXXECUGEN2T-MX2-5AIN 7analog_incorroborated
OEM-E11-19VVT oil-control valve RH (OCR+)low_side_outMAXXECUGEN2T-MX1-5GP out 1 (GND)low_side_outcorroborated
OEM-E11-27O2 sensor signal (bank unconfirmed)lambda_nb_inMAXXECUGEN2T-MX2-6AIN 8analog_incorroborated
OEM-E11-28VVT oil-control valve RH (OCR−)low_side_out———corroborated
OEM-E11-5Diagnostic test (TC)serial———corroborated
OEM-E11-7O2 sensor heater (bank unconfirmed)low_side_outMAXXECUGEN2T-MX2-12GP OUT 7 / WBO2 Sensor 1 H-low_side_outcorroborated
OEM-E11-8O2 sensor heater (bank unconfirmed)low_side_outMAXXECUGEN2T-MX3-12GP Out 8 (GND) / WBO2 Sensor 2 H-low_side_outcorroborated
OEM-E12-12Throttle magnetic clutch + (CL+)low_side_out———corroborated
OEM-E13-10MAF signal (VG)analog_inMAXXECUGEN2T-MX1-26AIN 1analog_incorroborated
OEM-E13-11O2 sensor signal (bank unconfirmed)lambda_nb_inMAXXECUGEN2T-MX2-13AIN 9analog_incorroborated
OEM-E13-12O2 sensor signal (bank unconfirmed)lambda_nb_inMAXXECUGEN2T-MX2-14AIN 10analog_incorroborated
OEM-E13-13Throttle position sensor 1 (VTA)analog_inMAXXECUGEN2T-MX1-27AIN 2analog_incorroborated
OEM-E13-14Engine coolant temp (THW)temp_inMAXXECUGEN2T-MX2-4AIN 6analog_incorroborated
OEM-E13-15VVT position sensor RH (VVR+)trigger_in———corroborated
OEM-E13-16VVT position sensor LH (VVL+)trigger_in———corroborated
OEM-E13-17ECU ground (E1)groundMAXXECUGEN2T-MX1-9 + MAXXECUGEN2T-MX2-9 + MAXXECUGEN2T-MX3-9Engine gnd + Engine gnd + Engine gndgroundcorroborated
OEM-E13-18Sensor ground (E2)sensor_groundMAXXECUGEN2T-MX1-14SENSOR GNDsensor_groundcorroborated
OEM-E13-19MAF ground (EVG)sensor_groundMAXXECUGEN2T-MX1-14SENSOR GNDsensor_groundcorroborated
OEM-E13-2+5V sensor reference (VC)vrefMAXXECUGEN2T-MX1-12Digital/VR 1 POWER SUPPLYvrefcorroborated
OEM-E13-20Throttle position sensor 2 (VTA2)analog_inMAXXECUGEN2T-MX1-29AIN 4analog_incorroborated
OEM-E13-21Accelerator pedal position 1 (VPA)analog_inMAXXECUGEN2T-MX1-28AIN 3analog_incorroborated
OEM-E13-22Intake air temp (THA)temp_inMAXXECUGEN2T-MX2-15AIN 11analog_incorroborated
OEM-E13-23VVT position sensor RH (VVR−)trigger_in———corroborated
OEM-E13-24VVT position sensor LH (VVL−)trigger_in———corroborated
OEM-E13-3O2 sensor heater (bank unconfirmed)low_side_outMAXXECUGEN2T-MX1-17GP out 5 (GND)low_side_outcorroborated
OEM-E13-4O2 sensor heater (bank unconfirmed)low_side_outMAXXECUGEN2T-MX2-3GP out 6 (GND)low_side_outcorroborated
OEM-E13-5Injector 1 (cyl 1)injector_outMAXXECUGEN2T-MX1-31INJECTOR 1injector_outcorroborated
OEM-E13-6Injector 2 (cyl 2)injector_outMAXXECUGEN2T-MX1-32INJECTOR 2injector_outcorroborated
OEM-E13-8Throttle magnetic clutch − (CL−)low_side_out———corroborated
OEM-E13-9Accelerator pedal position 2 (VPA2)analog_inMAXXECUGEN2T-MX1-30AIN 5analog_incorroborated
OEM-E14-1Injector 3 (cyl 3)injector_outMAXXECUGEN2T-MX1-33INJECTOR 3injector_outcorroborated
OEM-E14-10Camshaft position sensor (G2)trigger_inMAXXECUGEN2T-MX1-18Digital/VR 2 SIGNAL +trigger_incorroborated
OEM-E14-11Ignition coil 1 (IGT1)ignition_outMAXXECUGEN2T-MX1-1Ignition 1ignition_outcorroborated
OEM-E14-12Ignition coil 2 (IGT2)ignition_outMAXXECUGEN2T-MX1-2Ignition 2ignition_outcorroborated
OEM-E14-13Ignition coil 3 (IGT3)ignition_outMAXXECUGEN2T-MX1-3Ignition 3ignition_outcorroborated
OEM-E14-14Ignition coil 4 (IGT4)ignition_outMAXXECUGEN2T-MX1-4Ignition 4ignition_outcorroborated
OEM-E14-15Ignition coil 5 (IGT5)ignition_outMAXXECUGEN2T-MX2-1Ignition 5ignition_outcorroborated
OEM-E14-16Ignition coil 6 (IGT6)ignition_outMAXXECUGEN2T-MX2-2Ignition 6ignition_outcorroborated
OEM-E14-17Knock sensor RH (KNKR)knock_inMAXXECUGEN2T-MX2-31KNOCK 2+knock_incorroborated
OEM-E14-18Knock sensor LH (KNKL)knock_inMAXXECUGEN2T-MX2-28KNOCK 1+knock_incorroborated
OEM-E14-19VVT oil-control valve LH (OCV−)low_side_out———corroborated
OEM-E14-2Injector 4 (cyl 4)injector_outMAXXECUGEN2T-MX1-34INJECTOR 4injector_outcorroborated
OEM-E14-20VVT oil-control valve LH (OCV+)low_side_outMAXXECUGEN2T-MX1-6GP out 2 (GND)low_side_outcorroborated
OEM-E14-21Power/injector ground (E01)groundMAXXECUGEN2T-MX1-9 + MAXXECUGEN2T-MX2-9 + MAXXECUGEN2T-MX3-9Engine gnd + Engine gnd + Engine gndgroundcorroborated
OEM-E14-22Crank position sensor (NE−)trigger_inMAXXECUGEN2T-MX1-14SENSOR GNDsensor_groundcorroborated
OEM-E14-23Crank position sensor (NE+)trigger_inMAXXECUGEN2T-MX1-10Digital/VR 1 SIGNAL +trigger_incorroborated
OEM-E14-25Ignition coil 7 (IGT7)ignition_outMAXXECUGEN2T-MX3-3Ignition 7ignition_outcorroborated
OEM-E14-26Ignition coil 8 (IGT8)ignition_outMAXXECUGEN2T-MX3-4Ignition 8ignition_outcorroborated
OEM-E14-27Ignition confirmation 1 (IGF1)digital_inMAXXECUGEN2T-MX1-23Digital/VR 3 SIGNAL +digital_incorroborated
OEM-E14-28Ignition confirmation 2 (IGF2)digital_inMAXXECUGEN2T-MX1-24Digital/VR 4 SIGNAL +digital_incorroborated
OEM-E14-29ACIS induction VSVlow_side_out———corroborated
OEM-E14-3Injector 5 (cyl 5)injector_outMAXXECUGEN2T-MX2-33INJECTOR 5injector_outcorroborated
OEM-E14-4Injector 6 (cyl 6)injector_outMAXXECUGEN2T-MX2-34INJECTOR 6injector_outcorroborated
OEM-E14-5Injector 7 (cyl 7)injector_outMAXXECUGEN2T-MX3-29INJECTOR 7injector_outcorroborated
OEM-E14-6Injector 8 (cyl 8)injector_outMAXXECUGEN2T-MX3-30INJECTOR 8injector_outcorroborated
OEM-E14-7Throttle motor − (M−)hbridge_outMAXXECUGEN2T-MX2-8GP out 14 (H-BRIDGE 1)hbridge_outcorroborated
OEM-E14-8Throttle motor + (M+)hbridge_outMAXXECUGEN2T-MX2-7GP out 13 (H-BRIDGE 1)hbridge_outcorroborated
OEM-E15-1Battery constant (+12V)power_in———corroborated
OEM-E15-10EFI main relay control (MREL)low_side_outMAXXECUGEN2T-MX1-7GP out 3 (GND)low_side_outcorroborated
OEM-E15-11OBD-II / DLC3 data (SIL)serial———corroborated
OEM-E15-16ECM power (EFI relay +B)power_inMAXXECUGEN2T-MX1-25 + MAXXECUGEN2T-MX2-2512V supply 1 + 12V supply 2power_incorroborated
OEM-E15-5Fuel pump relay control (FC)low_side_outMAXXECUGEN2T-MX1-8GP out 4 (GND)low_side_outcorroborated
OEM-E15-6Check engine light (W)low_side_out———corroborated
OEM-E15-7ECM power feed (+BM)power_inMAXXECUGEN2T-MX1-25 + MAXXECUGEN2T-MX2-2512V supply 1 + 12V supply 2power_incorroborated
OEM-E15-8ECM power (EFI relay +B1)power_inMAXXECUGEN2T-MX1-25 + MAXXECUGEN2T-MX2-2512V supply 1 + 12V supply 2power_incorroborated
OEM-E15-9Ignition switch (+12V)digital_inMAXXECUGEN2T-MX2-2412V supply 3digital_incorroborated

Cut list

WireFromToGauge (mm²)ColourLengthSignalIdent
W1OEM-E15-16SP-14V-10.85no routeECM power (EFI relay +B)—
W2OEM-E15-7SP-14V-10.85no routeECM power feed (+BM)—
W3OEM-E15-8SP-14V-10.85no routeECM power (EFI relay +B1)—
W4SP-14V-1MAXXECUGEN2T-MX1-250.85no route12V supply 1—
W5SP-14V-1MAXXECUGEN2T-MX2-250.85no route12V supply 2—
W6OEM-E13-17SP-GND-10.85no routeECU ground (E1)—
W7OEM-E14-21SP-GND-10.85no routePower/injector ground (E01)—
W8SP-GND-1MAXXECUGEN2T-MX1-90.85no routeEngine gnd—
W9SP-GND-1MAXXECUGEN2T-MX2-90.85no routeEngine gnd—
W10SP-GND-1MAXXECUGEN2T-MX3-90.85no routeEngine gnd—
W11OEM-E13-18SP-0V-10.5no routeSensor ground (E2)—
W12OEM-E13-19SP-0V-10.5no routeMAF ground (EVG)—
W13SP-0V-1MAXXECUGEN2T-MX1-140.5no routeSENSOR GND—
W14OEM-E13-2MAXXECUGEN2T-MX1-120.5no route+5V sensor reference (VC)—
W15OEM-E14-23MAXXECUGEN2T-MX1-100.5no routeCrank position sensor (NE+)—
W16OEM-E14-22SP-0V-10.5no routeCrank position sensor (NE−)—
W17OEM-E14-10MAXXECUGEN2T-MX1-180.5no routeCamshaft position sensor (G2)—
W18OEM-E14-18MAXXECUGEN2T-MX2-280.5no routeKnock sensor LH (KNKL)—
W19OEM-E14-17MAXXECUGEN2T-MX2-310.5no routeKnock sensor RH (KNKR)—
W20OEM-E14-11MAXXECUGEN2T-MX1-10.5no routeIgnition coil 1 (IGT1)—
W21OEM-E14-12MAXXECUGEN2T-MX1-20.5no routeIgnition coil 2 (IGT2)—
W22OEM-E14-13MAXXECUGEN2T-MX1-30.5no routeIgnition coil 3 (IGT3)—
W23OEM-E14-14MAXXECUGEN2T-MX1-40.5no routeIgnition coil 4 (IGT4)—
W24OEM-E14-15MAXXECUGEN2T-MX2-10.5no routeIgnition coil 5 (IGT5)—
W25OEM-E14-16MAXXECUGEN2T-MX2-20.5no routeIgnition coil 6 (IGT6)—
W26OEM-E14-25MAXXECUGEN2T-MX3-30.5no routeIgnition coil 7 (IGT7)—
W27OEM-E14-26MAXXECUGEN2T-MX3-40.5no routeIgnition coil 8 (IGT8)—
W28OEM-E13-5MAXXECUGEN2T-MX1-310.5no routeInjector 1 (cyl 1)—
W29OEM-E13-6MAXXECUGEN2T-MX1-320.5no routeInjector 2 (cyl 2)—
W30OEM-E14-1MAXXECUGEN2T-MX1-330.5no routeInjector 3 (cyl 3)—
W31OEM-E14-2MAXXECUGEN2T-MX1-340.5no routeInjector 4 (cyl 4)—
W32OEM-E14-3MAXXECUGEN2T-MX2-330.5no routeInjector 5 (cyl 5)—
W33OEM-E14-4MAXXECUGEN2T-MX2-340.5no routeInjector 6 (cyl 6)—
W34OEM-E14-5MAXXECUGEN2T-MX3-290.5no routeInjector 7 (cyl 7)—
W35OEM-E14-6MAXXECUGEN2T-MX3-300.5no routeInjector 8 (cyl 8)—
W36OEM-E14-7MAXXECUGEN2T-MX2-80.5no routeThrottle motor − (M−)—
W37OEM-E14-8MAXXECUGEN2T-MX2-70.5no routeThrottle motor + (M+)—
W38OEM-E15-9MAXXECUGEN2T-MX2-240.5no routeIgnition switch (+12V)—
W39OEM-E11-19MAXXECUGEN2T-MX1-50.5no routeVVT oil-control valve RH (OCR+)—
W40OEM-E14-20MAXXECUGEN2T-MX1-60.5no routeVVT oil-control valve LH (OCV+)—
W41OEM-E13-10MAXXECUGEN2T-MX1-260.5no routeMAF signal (VG)—
W42OEM-E13-13MAXXECUGEN2T-MX1-270.5no routeThrottle position sensor 1 (VTA)—
W43OEM-E13-21MAXXECUGEN2T-MX1-280.5no routeAccelerator pedal position 1 (VPA)—
W44OEM-E13-20MAXXECUGEN2T-MX1-290.5no routeThrottle position sensor 2 (VTA2)—
W45OEM-E13-9MAXXECUGEN2T-MX1-300.5no routeAccelerator pedal position 2 (VPA2)—
W46OEM-E13-14MAXXECUGEN2T-MX2-40.5no routeEngine coolant temp (THW)—
W47OEM-E15-10MAXXECUGEN2T-MX1-70.5no routeEFI main relay control (MREL)—
W48OEM-E15-5MAXXECUGEN2T-MX1-80.5no routeFuel pump relay control (FC)—
W49OEM-E11-7MAXXECUGEN2T-MX2-120.5no routeO2 sensor heater (bank unconfirmed)—
W50OEM-E11-8MAXXECUGEN2T-MX3-120.5no routeO2 sensor heater (bank unconfirmed)—
W51OEM-E13-3MAXXECUGEN2T-MX1-170.5no routeO2 sensor heater (bank unconfirmed)—
W52OEM-E13-4MAXXECUGEN2T-MX2-30.5no routeO2 sensor heater (bank unconfirmed)—
W53OEM-E11-18MAXXECUGEN2T-MX2-50.5no routeO2 sensor signal (bank unconfirmed)—
W54OEM-E11-27MAXXECUGEN2T-MX2-60.5no routeO2 sensor signal (bank unconfirmed)—
W55OEM-E13-11MAXXECUGEN2T-MX2-130.5no routeO2 sensor signal (bank unconfirmed)—
W56OEM-E13-12MAXXECUGEN2T-MX2-140.5no routeO2 sensor signal (bank unconfirmed)—
W57OEM-E13-22MAXXECUGEN2T-MX2-150.5no routeIntake air temp (THA)—
W58OEM-E14-27MAXXECUGEN2T-MX1-230.5no routeIgnition confirmation 1 (IGF1)—
W59OEM-E14-28MAXXECUGEN2T-MX1-240.5no routeIgnition confirmation 2 (IGF2)—
W60OEM-E11-17MAXXECUGEN2T-MX3-210.5no routeStarter signal (STA)—

Bill of materials

CategoryPart numberManufacturerDescriptionQtyUnit

ECU setup sheet

RoleEngine refEngine signalSensorECU pointECU functionECU classSetup flag
No configured channels.

Findings

Open (6)

SeverityCodeSubjectMessage
warnDBW_MOTOR_CURRENTMAXXECUGEN2T-MX2-7Cannot confirm MaxxECU GEN2 TRACK can drive the throttle motor: MAXXECUGEN2T-MX2-7 "GP out 13 (H-BRIDGE 1)" is rated 5.0 A peak, but the motor stall current at OEM-E14-8 is unknown. Add the motor's peak current from a source, or measure the motor resistance: peak ≈ 14 V ÷ R (Hondata measured 4.9 A for a Civic Si body, 10.4 A for a ZDX body; holding current is about 1 A).
warnDBW_MOTOR_CURRENTMAXXECUGEN2T-MX2-8Cannot confirm MaxxECU GEN2 TRACK can drive the throttle motor: MAXXECUGEN2T-MX2-8 "GP out 14 (H-BRIDGE 1)" is rated 5.0 A peak, but the motor stall current at OEM-E14-7 is unknown. Add the motor's peak current from a source, or measure the motor resistance: peak ≈ 14 V ÷ R (Hondata measured 4.9 A for a Civic Si body, 10.4 A for a ZDX body; holding current is about 1 A).
infoNET_FAMILYOEM-E13-14 ↔ MAXXECUGEN2T-MX2-4OEM-E13-14 "Engine coolant temp (THW)" [temp_in] is wired to MAXXECUGEN2T-MX2-4 "AIN 6" [analog_in]. Thermistor on a plain analog input needs a pull-up; check the channel can enable one.
infoNET_FAMILYOEM-E13-19 ↔ OEM-E14-22OEM-E13-19 "MAF ground (EVG)" [sensor_ground] is wired to OEM-E14-22 "Crank position sensor (NE−)" [trigger_in]. Trigger return tied to sensor/trigger ground: correct for single-ended trigger inputs.
infoNET_FAMILYOEM-E13-22 ↔ MAXXECUGEN2T-MX2-15OEM-E13-22 "Intake air temp (THA)" [temp_in] is wired to MAXXECUGEN2T-MX2-15 "AIN 11" [analog_in]. Thermistor on a plain analog input needs a pull-up; check the channel can enable one.
infoUNMAPPEDOEM12 optional OEM pins are not mapped: OEM-E11-28 VVT oil-control valve RH (OCR−); OEM-E11-5 Diagnostic test (TC); OEM-E12-12 Throttle magnetic clutch + (CL+); OEM-E13-15 VVT position sensor RH (VVR+); OEM-E13-16 VVT position sensor LH (VVL+); OEM-E13-23 VVT position sensor RH (VVR−); OEM-E13-24 VVT position sensor LH (VVL−); OEM-E13-8 Throttle magnetic clutch − (CL−); OEM-E14-19 VVT oil-control valve LH (OCV−); OEM-E14-29 ACIS induction VSV; OEM-E15-11 OBD-II / DLC3 data (SIL); OEM-E15-6 Check engine light (W)

Accepted (1)

CodeSubjectReasonBy
REQUIRED_UNMAPPEDOEM-E15-1Battery-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. Not wired: - OEM-E15 1: Battery constant (+12V): MaxxECU MaxxECU GEN2 TRACK has no battery-constant input; not needed - OEM-E13 16: VVT position sensor LH (VVL+): no free cam_hall/cam_vr/frequency_in input on MaxxECU MaxxECU GEN2 TRACK - OEM-E13 24: VVT position sensor LH (VVL−): no free cam_hall/cam_vr/frequency_in input on MaxxECU MaxxECU GEN2 TRACK - OEM-E13 15: VVT position sensor RH (VVR+): no free cam_hall/cam_vr/frequency_in input on MaxxECU MaxxECU GEN2 TRACK - OEM-E13 23: VVT position sensor RH (VVR−): no free cam_hall/cam_vr/frequency_in input on MaxxECU MaxxECU GEN2 TRACK - OEM-E11 28: VVT oil-control valve RH (OCR−): no free low_side/relay_control/heater_low_side/ls_hs/injector on MaxxECU MaxxECU GEN2 TRACK - OEM-E12 12: Throttle magnetic clutch + (CL+): no free low_side/relay_control/heater_low_side/ls_hs/injector on MaxxECU MaxxECU GEN2 TRACK - OEM-E13 8: Throttle magnetic clutch − (CL−): no free low_side/relay_control/heater_low_side/ls_hs/injector on MaxxECU MaxxECU GEN2 TRACK - OEM-E14 19: VVT oil-control valve LH (OCV−): no free low_side/relay_control/heater_low_side/ls_hs/injector on MaxxECU MaxxECU GEN2 TRACK - OEM-E14 29: ACIS induction VSV: no free low_side/relay_control/heater_low_side/ls_hs/injector on MaxxECU MaxxECU GEN2 TRACK - OEM-E15 6: Check engine light (W): no free low_side/relay_control/heater_low_side/ls_hs/injector on MaxxECU MaxxECU GEN2 TRACK - OEM-E15 11: OBD-II / DLC3 data (SIL): no free k_line on MaxxECU MaxxECU GEN2 TRACK - OEM-E11 5: Diagnostic test (TC): no free k_line on MaxxECU MaxxECU GEN2 TRACK

Sources

ReliabilityKindTitleURLArchiveCapturedSHA-256
4vendor_docMaxxECU GEN2 pinout (RACE MX1–MX4 / TRACK MX1–MX3)http://www.maxxecu.com/webhelp/wirings-maxxecu_gen2_pinout.htmlarchive2026-10-05f689b8b6b08f
4vendor_docToyota 1UZ-FE (VVT-i) engine manual M1UZhttp://www.epicmarine.com/docs/M1UZrm.pdf———
3community_copy1998 Lexus LS400 ECM terminal voltage chart (RM717U translation)https://www.renrendoc.com/p-59096353.html———