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Lexus IS300 (XE10 / JCE10) 2001-05 2JZ-GE VVT-i → Emtron Shadow 8 (auto)

Lexus IS300 (XE10 / JCE10) 2001-05 2JZ-GE VVT-i — Emtron — Shadow 8
⚠ 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.

Statusdraft · not yet verified: nobody has reported building and running this harness
Open errors2: read the Findings page before cutting any wire
Size of the job57 wires · 11 connectors · 3 part lines
ToolsCrimp and extraction tools for each terminal family (see Connectors) · wire strippers · multimeter · heat gun + heat-shrink
Terminals3-1447221-4
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-E2-13SP-14V-10.85☐☐☐☐☐☐☐
W2OEM-E3-16SP-14V-10.85☐☐☐☐☐☐☐
W3OEM-E3-7SP-14V-10.85☐☐☐☐☐☐☐
W4OEM-E3-8SP-14V-10.85☐☐☐☐☐☐☐
W5SP-14V-1SHADOW8-A-10.85☐☐☐☐☐☐☐
W6SP-14V-1SHADOW8-B-260.85☐☐☐☐☐☐☐
W7OEM-E3-1SHADOW8-B-10.85☐☐☐☐☐☐☐
W8OEM-E6-17SP-GND-10.85☐☐☐☐☐☐☐
W9OEM-E7-21SP-GND-10.85☐☐☐☐☐☐☐
W10SP-GND-1SHADOW8-A-340.85☐☐☐☐☐☐☐
W11SP-GND-1SHADOW8-A-90.85☐☐☐☐☐☐☐
W12OEM-E6-18SP-0V-10.5☐☐☐☐☐☐☐
W13OEM-E6-19SP-0V-10.5☐☐☐☐☐☐☐
W14OEM-E7-22SP-0V-10.5☐☐☐☐☐☐☐
W15SP-0V-1SHADOW8-A-40.5☐☐☐☐☐☐☐
W16SP-0V-1SHADOW8-A-70.5☐☐☐☐☐☐☐
W17OEM-E6-2SHADOW8-A-30.5☐☐☐☐☐☐☐
W18OEM-E7-23SHADOW8-A-50.5☐☐☐☐☐☐☐
W19OEM-E7-10SHADOW8-A-60.5☐☐☐☐☐☐☐
W20OEM-E7-28SHADOW8-A-160.5☐☐☐☐☐☐☐
W21OEM-E7-27SHADOW8-A-240.5☐☐☐☐☐☐☐
W22OEM-E7-11SHADOW8-B-270.5☐☐☐☐☐☐☐
W23OEM-E7-12SHADOW8-B-280.5☐☐☐☐☐☐☐
W24OEM-E7-13SHADOW8-B-290.5☐☐☐☐☐☐☐
W25OEM-E6-5SHADOW8-B-20.5☐☐☐☐☐☐☐
W26OEM-E6-6SHADOW8-B-30.5☐☐☐☐☐☐☐
W27OEM-E7-1SHADOW8-B-40.5☐☐☐☐☐☐☐
W28OEM-E7-2SHADOW8-B-50.5☐☐☐☐☐☐☐
W29OEM-E7-3SHADOW8-B-60.5☐☐☐☐☐☐☐
W30OEM-E7-4SHADOW8-B-70.5☐☐☐☐☐☐☐
W31OEM-E3-9SHADOW8-B-210.5☐☐☐☐☐☐☐
W32OEM-E7-17SHADOW8-B-100.5☐☐☐☐☐☐☐
W33OEM-E7-18SHADOW8-B-110.5☐☐☐☐☐☐☐
W34OEM-E7-19SHADOW8-B-120.5☐☐☐☐☐☐☐
W35OEM-E7-20SHADOW8-B-130.5☐☐☐☐☐☐☐
W36OEM-E6-15SHADOW8-A-100.5☐☐☐☐☐☐☐
W37OEM-E6-23SHADOW8-A-110.5☐☐☐☐☐☐☐
W38OEM-E6-16SHADOW8-A-120.5☐☐☐☐☐☐☐
W39OEM-E6-24SHADOW8-A-130.5☐☐☐☐☐☐☐
W40OEM-E6-14SHADOW8-A-140.5☐☐☐☐☐☐☐
W41OEM-E3-10SHADOW8-B-140.5☐☐☐☐☐☐☐
W42OEM-E3-4SHADOW8-B-150.5☐☐☐☐☐☐☐
W43OEM-E4-13SHADOW8-B-160.5☐☐☐☐☐☐☐
W44OEM-E2-25SHADOW8-B-170.5☐☐☐☐☐☐☐
W45OEM-E2-26SHADOW8-B-80.5☐☐☐☐☐☐☐
W46OEM-E6-3SHADOW8-B-90.5☐☐☐☐☐☐☐
W47OEM-E6-10SHADOW8-A-180.5☐☐☐☐☐☐☐
W48OEM-E2-24SHADOW8-A-190.5☐☐☐☐☐☐☐
W49OEM-E4-8SHADOW8-A-200.5☐☐☐☐☐☐☐
W50OEM-E6-11SHADOW8-A-210.5☐☐☐☐☐☐☐
W51OEM-E6-12SHADOW8-A-220.5☐☐☐☐☐☐☐
W52OEM-E5-11SHADOW8-A-260.5☐☐☐☐☐☐☐
W53OEM-E5-5SHADOW8-A-270.5☐☐☐☐☐☐☐
W54OEM-E7-25SHADOW8-A-280.5☐☐☐☐☐☐☐
W55OEM-E4-2SHADOW8-A-290.5☐☐☐☐☐☐☐
W56OEM-E4-5SHADOW8-A-300.5☐☐☐☐☐☐☐
W57OEM-E4-6SHADOW8-A-310.5☐☐☐☐☐☐☐

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
1SHADOW8-A-1SHADOW8-A-34open (OL)+12 V supply must not touch power ground
2SHADOW8-A-1SHADOW8-A-4open (OL)+12 V supply must not touch sensor ground
3SHADOW8-B-1SHADOW8-A-34open (OL)+12 V supply must not touch power ground
4SHADOW8-B-1SHADOW8-A-4open (OL)+12 V supply must not touch sensor ground
5SHADOW8-A-1SHADOW8-A-3open (OL)+12 V supply must not touch 5 V sensor reference
6SHADOW8-A-34SHADOW8-A-3open (OL)power ground must not touch 5 V sensor reference
7SHADOW8-A-4SHADOW8-A-3open (OL)sensor ground must not touch 5 V sensor reference
8SHADOW8-B-1SHADOW8-A-3open (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

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No revisions yet.

Schematic

OEM-E2OEM-E3OEM-E4OEM-E5OEM-E6OEM-E7SHADOW8-ASHADOW8-BSP-0VSP-14VSP-GND

Connectors

OEM-E2

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
13ETCS power (TBP, throttle bypass)—W1—0.85SP-14V-1———
24O2 right rear (OXR2)—W48—0.5SHADOW8-A-19———
25O2 heater right rear (HTR2)—W44—0.5SHADOW8-B-17———
26O2 heater left rear (HTL2)—W45—0.5SHADOW8-B-8———

OEM-E3

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Battery constant (BATT)—W7—0.85SHADOW8-B-1———
10EFI main relay control (MREL)—W41—0.5SHADOW8-B-14———
11Serial diagnostic (SIL)————————
16EFI main relay (+B)—W2—0.85SP-14V-1———
4Fuel pump relay (FPR)—W42—0.5SHADOW8-B-15———
5Fuel pump control (FC)————————
6Check-engine lamp (W)————————
7ETCS main relay (+BM)—W3—0.85SP-14V-1———
8EFI main relay (+B2)—W4—0.85SP-14V-1———
9Ignition switch (IGSW)—W31—0.5SHADOW8-B-21———

OEM-E4

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
13A/C clutch relay (ACMG)—W43—0.5SHADOW8-B-16———
18EVAP vapor pressure (PTNK)————————
2Starter signal (STA)—W55—0.5SHADOW8-A-29———
5Diagnostic/timing check (TC)—W56—0.5SHADOW8-A-30———
6Stop light switch (STP)—W57—0.5SHADOW8-A-31———
8O2 left rear (OXL2)—W49—0.5SHADOW8-A-20———

OEM-E5

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
11Vehicle speed sensor (SP2-)—W52—0.5SHADOW8-A-26———
12Canister close valve (CCV)————————
5Vehicle speed sensor (SP2+)—W53—0.5SHADOW8-A-27———

OEM-E6

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
10Mass air flow (VG)—W47—0.5SHADOW8-A-18———
11O2 right front (OXR1)—W50—0.5SHADOW8-A-21———
12O2 left front (OXL1)—W51—0.5SHADOW8-A-22———
14Coolant temperature (THW)—W40—0.5SHADOW8-A-14———
15Accelerator pedal 1 (VPA)—W36—0.5SHADOW8-A-10———
16Accelerator pedal 2 (VPA2)—W38—0.5SHADOW8-A-12———
17Power ground (E1)—W8—0.85SP-GND-1———
18Sensor ground (E2)—W12—0.5SP-0V-1———
19MAF ground (EVG)—W13—0.5SP-0V-1———
2Sensor supply +5V (VC)—W17—0.5SHADOW8-A-3———
22Intake air temperature (THA)————————
23Throttle position 1 (VTA)—W37—0.5SHADOW8-A-11———
24Throttle position 2 (VTA2)—W39—0.5SHADOW8-A-13———
3O2 heater right front (HTR)—W46—0.5SHADOW8-B-9———
4O2 heater left front (HTL)————————
5Injector 1 (#10)—W25—0.5SHADOW8-B-2———
6Injector 2 (#20)—W26—0.5SHADOW8-B-3———
7EVAP purge VSV (PRG)————————

OEM-E7

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Injector 3 (#30)—W27—0.5SHADOW8-B-4———
10Cam position (G2)—W19—0.5SHADOW8-A-6———
11Ignition 1 (IGT)—W22—0.5SHADOW8-B-27———
12Ignition 2 (IGT2)—W23—0.5SHADOW8-B-28———
13Ignition 3 (IGT3)—W24—0.5SHADOW8-B-29———
17VVT-i OCV - (OCV-)—W32—0.5SHADOW8-B-10———
18VVT-i OCV + (OCV+)—W33—0.5SHADOW8-B-11———
19ETCS throttle clutch - (CL-)—W34—0.5SHADOW8-B-12———
2Injector 4 (#40)—W28—0.5SHADOW8-B-5———
20ETCS throttle clutch + (CL+)—W35—0.5SHADOW8-B-13———
21Power ground (E01)—W9—0.85SP-GND-1———
22Crank position return (NE-)—W14—0.5SP-0V-1———
23Crank position (NE)—W18—0.5SHADOW8-A-5———
25Igniter feedback (IGF)—W54—0.5SHADOW8-A-28———
27Knock sensor 2 (KNK2)—W21—0.5SHADOW8-A-24———
28Knock sensor 1 (KNK1)—W20—0.5SHADOW8-A-16———
3Injector 5 (#50)—W29—0.5SHADOW8-B-6———
4Injector 6 (#60)—W30—0.5SHADOW8-B-7———
5ACIS intake VSV————————
7ETCS throttle motor - (M-)————————
8ETCS throttle motor + (M+)————————

SHADOW8-A

Mating face
SHADOW8-A-1 · ECU supply1SHADOW8-A-2 · 8.0V sensor supply2SHADOW8-A-3 · 5.0V sensor supply3SHADOW8-A-4 · 0V analog reference4SHADOW8-A-5 · Crank position sensor5SHADOW8-A-6 · Sync position sensor6SHADOW8-A-7 · Trigger ground7SHADOW8-A-8 · Shield8SHADOW8-A-9 · Ground 19SHADOW8-A-10 · Analog voltage 110SHADOW8-A-11 · Analog voltage 211SHADOW8-A-12 · Analog voltage 312SHADOW8-A-13 · Analog voltage 413SHADOW8-A-14 · Analog voltage 514SHADOW8-A-15 · CAN bus 1 high15SHADOW8-A-16 · Knock 1 +16SHADOW8-A-17 · Knock 1 −17SHADOW8-A-18 · Analog voltage 618SHADOW8-A-19 · Analog voltage 7 (switchable 1k pull-up)19SHADOW8-A-20 · Analog voltage 8 (switchable 1k pull-up)20SHADOW8-A-21 · Analog voltage 9 (switchable 1k pull-up)21SHADOW8-A-22 · Analog voltage 10 (switchable 1k pull-up)22SHADOW8-A-23 · CAN bus 1 low23SHADOW8-A-24 · Knock 2 +24SHADOW8-A-25 · Knock 2 −25SHADOW8-A-26 · Digital input 126SHADOW8-A-27 · Digital input 227SHADOW8-A-28 · Digital input 328SHADOW8-A-29 · Digital input 429SHADOW8-A-30 · Digital input 530SHADOW8-A-31 · Digital input 631SHADOW8-A-32 · CAN bus 2 high32SHADOW8-A-33 · CAN bus 2 low33SHADOW8-A-34 · Ground 234
Wire side
SHADOW8-A-1 · ECU supply1SHADOW8-A-2 · 8.0V sensor supply2SHADOW8-A-3 · 5.0V sensor supply3SHADOW8-A-4 · 0V analog reference4SHADOW8-A-5 · Crank position sensor5SHADOW8-A-6 · Sync position sensor6SHADOW8-A-7 · Trigger ground7SHADOW8-A-8 · Shield8SHADOW8-A-9 · Ground 19SHADOW8-A-10 · Analog voltage 110SHADOW8-A-11 · Analog voltage 211SHADOW8-A-12 · Analog voltage 312SHADOW8-A-13 · Analog voltage 413SHADOW8-A-14 · Analog voltage 514SHADOW8-A-15 · CAN bus 1 high15SHADOW8-A-16 · Knock 1 +16SHADOW8-A-17 · Knock 1 −17SHADOW8-A-18 · Analog voltage 618SHADOW8-A-19 · Analog voltage 7 (switchable 1k pull-up)19SHADOW8-A-20 · Analog voltage 8 (switchable 1k pull-up)20SHADOW8-A-21 · Analog voltage 9 (switchable 1k pull-up)21SHADOW8-A-22 · Analog voltage 10 (switchable 1k pull-up)22SHADOW8-A-23 · CAN bus 1 low23SHADOW8-A-24 · Knock 2 +24SHADOW8-A-25 · Knock 2 −25SHADOW8-A-26 · Digital input 126SHADOW8-A-27 · Digital input 227SHADOW8-A-28 · Digital input 328SHADOW8-A-29 · Digital input 429SHADOW8-A-30 · Digital input 530SHADOW8-A-31 · Digital input 631SHADOW8-A-32 · CAN bus 2 high32SHADOW8-A-33 · CAN bus 2 low33SHADOW8-A-34 · Ground 234
CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1ECU supply—W5—0.85SP-14V-1———
28.0V sensor supply————————
35.0V sensor supply—W17—0.5OEM-E6-2———
40V analog reference—W15—0.5SP-0V-1———
5Crank position sensor—W18—0.5OEM-E7-23———
6Sync position sensor—W19—0.5OEM-E7-10———
7Trigger ground—W16—0.5SP-0V-1———
8Shield————————
9Ground 1—W11—0.85SP-GND-1———
10Analog voltage 1—W36—0.5OEM-E6-15———
11Analog voltage 2—W37—0.5OEM-E6-23———
12Analog voltage 3—W38—0.5OEM-E6-16———
13Analog voltage 4—W39—0.5OEM-E6-24———
14Analog voltage 5—W40—0.5OEM-E6-14———
15CAN bus 1 high————————
16Knock 1 +—W20—0.5OEM-E7-28———
17Knock 1 −————————
18Analog voltage 6—W47—0.5OEM-E6-10———
19Analog voltage 7 (switchable 1k pull-up)—W48—0.5OEM-E2-24———
20Analog voltage 8 (switchable 1k pull-up)—W49—0.5OEM-E4-8———
21Analog voltage 9 (switchable 1k pull-up)—W50—0.5OEM-E6-11———
22Analog voltage 10 (switchable 1k pull-up)—W51—0.5OEM-E6-12———
23CAN bus 1 low————————
24Knock 2 +—W21—0.5OEM-E7-27———
25Knock 2 −————————
26Digital input 1—W52—0.5OEM-E5-11———
27Digital input 2—W53—0.5OEM-E5-5———
28Digital input 3—W54—0.5OEM-E7-25———
29Digital input 4—W55—0.5OEM-E4-2———
30Digital input 5—W56—0.5OEM-E4-5———
31Digital input 6—W57—0.5OEM-E4-6———
32CAN bus 2 high————————
33CAN bus 2 low————————
34Ground 2—W10—0.85SP-GND-1———

SHADOW8-B

Mating face
SHADOW8-B-1 · Battery constant (HOT) supply1SHADOW8-B-2 · Injector cylinder 12SHADOW8-B-3 · Injector cylinder 23SHADOW8-B-4 · Injector cylinder 34SHADOW8-B-5 · Injector cylinder 45SHADOW8-B-6 · Injector cylinder 56SHADOW8-B-7 · Injector cylinder 67SHADOW8-B-8 · Injector cylinder 78SHADOW8-B-9 · Injector cylinder 89SHADOW8-B-10 · Aux output 110SHADOW8-B-11 · Aux output 211SHADOW8-B-12 · Aux output 312SHADOW8-B-13 · Aux output 413SHADOW8-B-14 · Aux output 514SHADOW8-B-15 · Aux output 615SHADOW8-B-16 · Aux output 716SHADOW8-B-17 · Aux output 817SHADOW8-B-18 · Digital input 718SHADOW8-B-19 · Digital input 819SHADOW8-B-20 · Digital input 920SHADOW8-B-21 · Digital input 10 / ignition switch21SHADOW8-B-22 · Aux output 922SHADOW8-B-23 · Aux output 1023SHADOW8-B-24 · Aux output 1124SHADOW8-B-25 · Aux output 1225SHADOW8-B-26 · Aux 9–12 power supply26SHADOW8-B-27 · Ignition TTL cylinder 127SHADOW8-B-28 · Ignition TTL cylinder 228SHADOW8-B-29 · Ignition TTL cylinder 329SHADOW8-B-30 · Ignition TTL cylinder 430SHADOW8-B-31 · Ignition TTL cylinder 531SHADOW8-B-32 · Ignition TTL cylinder 632SHADOW8-B-33 · Ignition TTL cylinder 733SHADOW8-B-34 · Ignition TTL cylinder 834
Wire side
SHADOW8-B-1 · Battery constant (HOT) supply1SHADOW8-B-2 · Injector cylinder 12SHADOW8-B-3 · Injector cylinder 23SHADOW8-B-4 · Injector cylinder 34SHADOW8-B-5 · Injector cylinder 45SHADOW8-B-6 · Injector cylinder 56SHADOW8-B-7 · Injector cylinder 67SHADOW8-B-8 · Injector cylinder 78SHADOW8-B-9 · Injector cylinder 89SHADOW8-B-10 · Aux output 110SHADOW8-B-11 · Aux output 211SHADOW8-B-12 · Aux output 312SHADOW8-B-13 · Aux output 413SHADOW8-B-14 · Aux output 514SHADOW8-B-15 · Aux output 615SHADOW8-B-16 · Aux output 716SHADOW8-B-17 · Aux output 817SHADOW8-B-18 · Digital input 718SHADOW8-B-19 · Digital input 819SHADOW8-B-20 · Digital input 920SHADOW8-B-21 · Digital input 10 / ignition switch21SHADOW8-B-22 · Aux output 922SHADOW8-B-23 · Aux output 1023SHADOW8-B-24 · Aux output 1124SHADOW8-B-25 · Aux output 1225SHADOW8-B-26 · Aux 9–12 power supply26SHADOW8-B-27 · Ignition TTL cylinder 127SHADOW8-B-28 · Ignition TTL cylinder 228SHADOW8-B-29 · Ignition TTL cylinder 329SHADOW8-B-30 · Ignition TTL cylinder 430SHADOW8-B-31 · Ignition TTL cylinder 531SHADOW8-B-32 · Ignition TTL cylinder 632SHADOW8-B-33 · Ignition TTL cylinder 733SHADOW8-B-34 · Ignition TTL cylinder 834
CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Battery constant (HOT) supply—W7—0.85OEM-E3-1———
2Injector cylinder 1—W25—0.5OEM-E6-5———
3Injector cylinder 2—W26—0.5OEM-E6-6———
4Injector cylinder 3—W27—0.5OEM-E7-1———
5Injector cylinder 4—W28—0.5OEM-E7-2———
6Injector cylinder 5—W29—0.5OEM-E7-3———
7Injector cylinder 6—W30—0.5OEM-E7-4———
8Injector cylinder 7—W45—0.5OEM-E2-26———
9Injector cylinder 8—W46—0.5OEM-E6-3———
10Aux output 1—W32—0.5OEM-E7-17———
11Aux output 2—W33—0.5OEM-E7-18———
12Aux output 3—W34—0.5OEM-E7-19———
13Aux output 4—W35—0.5OEM-E7-20———
14Aux output 5—W41—0.5OEM-E3-10———
15Aux output 6—W42—0.5OEM-E3-4———
16Aux output 7—W43—0.5OEM-E4-13———
17Aux output 8—W44—0.5OEM-E2-25———
18Digital input 7————————
19Digital input 8————————
20Digital input 9————————
21Digital input 10 / ignition switch—W31—0.5OEM-E3-9———
22Aux output 9————————
23Aux output 10————————
24Aux output 11————————
25Aux output 12————————
26Aux 9–12 power supply—W6—0.85SP-14V-1———
27Ignition TTL cylinder 1—W22—0.5OEM-E7-11———
28Ignition TTL cylinder 2—W23—0.5OEM-E7-12———
29Ignition TTL cylinder 3—W24—0.5OEM-E7-13———
30Ignition TTL cylinder 4————————
31Ignition TTL cylinder 5————————
32Ignition TTL cylinder 6————————
33Ignition TTL cylinder 7————————
34Ignition TTL cylinder 8————————

SP-0V

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1——W15—0.5SHADOW8-A-4———
1——W12—0.5OEM-E6-18———
1——W13—0.5OEM-E6-19———
1——W14—0.5OEM-E7-22———
1——W16—0.5SHADOW8-A-7———

SP-14V

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1——W1—0.85OEM-E2-13———
1——W2—0.85OEM-E3-16———
1——W3—0.85OEM-E3-7———
1——W4—0.85OEM-E3-8———
1——W5—0.85SHADOW8-A-1———
1——W6—0.85SHADOW8-B-26———

SP-GND

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1——W8—0.85OEM-E6-17———
1——W9—0.85OEM-E7-21———
1——W10—0.85SHADOW8-A-34———
1——W11—0.85SHADOW8-A-9———

Pin map

OEM pointOEM functionOEM familyTarget pointTarget functionTarget familyWire colourEvidence
OEM-E2-13ETCS power (TBP, throttle bypass)power_inSHADOW8-A-1 + SHADOW8-B-26ECU supply + Aux 9–12 power supplypower_insingle_source
OEM-E2-24O2 right rear (OXR2)lambda_nb_inSHADOW8-A-19Analog voltage 7 (switchable 1k pull-up)analog_insingle_source
OEM-E2-25O2 heater right rear (HTR2)low_side_outSHADOW8-B-17Aux output 8switch_outsingle_source
OEM-E2-26O2 heater left rear (HTL2)low_side_outSHADOW8-B-8Injector cylinder 7injector_outsingle_source
OEM-E3-1Battery constant (BATT)power_inSHADOW8-B-1Battery constant (HOT) supplypower_insingle_source
OEM-E3-10EFI main relay control (MREL)low_side_outSHADOW8-B-14Aux output 5switch_outsingle_source
OEM-E3-11Serial diagnostic (SIL)serial———single_source
OEM-E3-16EFI main relay (+B)power_inSHADOW8-A-1 + SHADOW8-B-26ECU supply + Aux 9–12 power supplypower_insingle_source
OEM-E3-4Fuel pump relay (FPR)low_side_outSHADOW8-B-15Aux output 6switch_outsingle_source
OEM-E3-5Fuel pump control (FC)low_side_out———single_source
OEM-E3-6Check-engine lamp (W)low_side_out———single_source
OEM-E3-7ETCS main relay (+BM)power_inSHADOW8-A-1 + SHADOW8-B-26ECU supply + Aux 9–12 power supplypower_insingle_source
OEM-E3-8EFI main relay (+B2)power_inSHADOW8-A-1 + SHADOW8-B-26ECU supply + Aux 9–12 power supplypower_insingle_source
OEM-E3-9Ignition switch (IGSW)digital_inSHADOW8-B-21Digital input 10 / ignition switchdigital_insingle_source
OEM-E4-13A/C clutch relay (ACMG)low_side_outSHADOW8-B-16Aux output 7switch_outsingle_source
OEM-E4-18EVAP vapor pressure (PTNK)analog_in———single_source
OEM-E4-2Starter signal (STA)digital_inSHADOW8-A-29Digital input 4digital_insingle_source
OEM-E4-5Diagnostic/timing check (TC)digital_inSHADOW8-A-30Digital input 5digital_insingle_source
OEM-E4-6Stop light switch (STP)digital_inSHADOW8-A-31Digital input 6digital_insingle_source
OEM-E4-8O2 left rear (OXL2)lambda_nb_inSHADOW8-A-20Analog voltage 8 (switchable 1k pull-up)analog_insingle_source
OEM-E5-11Vehicle speed sensor (SP2-)digital_inSHADOW8-A-26Digital input 1digital_insingle_source
OEM-E5-12Canister close valve (CCV)low_side_out———single_source
OEM-E5-5Vehicle speed sensor (SP2+)digital_inSHADOW8-A-27Digital input 2digital_insingle_source
OEM-E6-10Mass air flow (VG)analog_inSHADOW8-A-18Analog voltage 6analog_insingle_source
OEM-E6-11O2 right front (OXR1)lambda_nb_inSHADOW8-A-21Analog voltage 9 (switchable 1k pull-up)analog_insingle_source
OEM-E6-12O2 left front (OXL1)lambda_nb_inSHADOW8-A-22Analog voltage 10 (switchable 1k pull-up)analog_insingle_source
OEM-E6-14Coolant temperature (THW)temp_inSHADOW8-A-14Analog voltage 5analog_insingle_source
OEM-E6-15Accelerator pedal 1 (VPA)analog_inSHADOW8-A-10Analog voltage 1analog_insingle_source
OEM-E6-16Accelerator pedal 2 (VPA2)analog_inSHADOW8-A-12Analog voltage 3analog_insingle_source
OEM-E6-17Power ground (E1)groundSHADOW8-A-34 + SHADOW8-A-9Ground 2 + Ground 1groundsingle_source
OEM-E6-18Sensor ground (E2)sensor_groundSHADOW8-A-4 + SHADOW8-A-70V analog reference + Trigger groundsensor_groundsingle_source
OEM-E6-19MAF ground (EVG)sensor_groundSHADOW8-A-4 + SHADOW8-A-70V analog reference + Trigger groundsensor_groundsingle_source
OEM-E6-2Sensor supply +5V (VC)vrefSHADOW8-A-35.0V sensor supplyvrefsingle_source
OEM-E6-22Intake air temperature (THA)temp_in———single_source
OEM-E6-23Throttle position 1 (VTA)analog_inSHADOW8-A-11Analog voltage 2analog_insingle_source
OEM-E6-24Throttle position 2 (VTA2)analog_inSHADOW8-A-13Analog voltage 4analog_insingle_source
OEM-E6-3O2 heater right front (HTR)low_side_outSHADOW8-B-9Injector cylinder 8injector_outsingle_source
OEM-E6-4O2 heater left front (HTL)low_side_out———single_source
OEM-E6-5Injector 1 (#10)injector_outSHADOW8-B-2Injector cylinder 1injector_outsingle_source
OEM-E6-6Injector 2 (#20)injector_outSHADOW8-B-3Injector cylinder 2injector_outsingle_source
OEM-E6-7EVAP purge VSV (PRG)low_side_out———single_source
OEM-E7-1Injector 3 (#30)injector_outSHADOW8-B-4Injector cylinder 3injector_outsingle_source
OEM-E7-10Cam position (G2)trigger_inSHADOW8-A-6Sync position sensortrigger_insingle_source
OEM-E7-11Ignition 1 (IGT)ignition_outSHADOW8-B-27Ignition TTL cylinder 1ignition_outsingle_source
OEM-E7-12Ignition 2 (IGT2)ignition_outSHADOW8-B-28Ignition TTL cylinder 2ignition_outsingle_source
OEM-E7-13Ignition 3 (IGT3)ignition_outSHADOW8-B-29Ignition TTL cylinder 3ignition_outsingle_source
OEM-E7-17VVT-i OCV - (OCV-)low_side_outSHADOW8-B-10Aux output 1low_side_outsingle_source
OEM-E7-18VVT-i OCV + (OCV+)low_side_outSHADOW8-B-11Aux output 2low_side_outsingle_source
OEM-E7-19ETCS throttle clutch - (CL-)low_side_outSHADOW8-B-12Aux output 3low_side_outsingle_source
OEM-E7-2Injector 4 (#40)injector_outSHADOW8-B-5Injector cylinder 4injector_outsingle_source
OEM-E7-20ETCS throttle clutch + (CL+)low_side_outSHADOW8-B-13Aux output 4low_side_outsingle_source
OEM-E7-21Power ground (E01)groundSHADOW8-A-34 + SHADOW8-A-9Ground 2 + Ground 1groundsingle_source
OEM-E7-22Crank position return (NE-)sensor_groundSHADOW8-A-4 + SHADOW8-A-70V analog reference + Trigger groundsensor_groundsingle_source
OEM-E7-23Crank position (NE)trigger_inSHADOW8-A-5Crank position sensortrigger_insingle_source
OEM-E7-25Igniter feedback (IGF)digital_inSHADOW8-A-28Digital input 3digital_insingle_source
OEM-E7-27Knock sensor 2 (KNK2)knock_inSHADOW8-A-24Knock 2 +knock_insingle_source
OEM-E7-28Knock sensor 1 (KNK1)knock_inSHADOW8-A-16Knock 1 +knock_insingle_source
OEM-E7-3Injector 5 (#50)injector_outSHADOW8-B-6Injector cylinder 5injector_outsingle_source
OEM-E7-4Injector 6 (#60)injector_outSHADOW8-B-7Injector cylinder 6injector_outsingle_source
OEM-E7-5ACIS intake VSVlow_side_out———single_source
OEM-E7-7ETCS throttle motor - (M-)hbridge_out———single_source
OEM-E7-8ETCS throttle motor + (M+)hbridge_out———single_source

Cut list

WireFromToGauge (mm²)ColourLengthSignalIdent
W1OEM-E2-13SP-14V-10.85no routeETCS power (TBP, throttle bypass)—
W2OEM-E3-16SP-14V-10.85no routeEFI main relay (+B)—
W3OEM-E3-7SP-14V-10.85no routeETCS main relay (+BM)—
W4OEM-E3-8SP-14V-10.85no routeEFI main relay (+B2)—
W5SP-14V-1SHADOW8-A-10.85no routeECU supply—
W6SP-14V-1SHADOW8-B-260.85no routeAux 9–12 power supply—
W7OEM-E3-1SHADOW8-B-10.85no routeBattery constant (BATT)—
W8OEM-E6-17SP-GND-10.85no routePower ground (E1)—
W9OEM-E7-21SP-GND-10.85no routePower ground (E01)—
W10SP-GND-1SHADOW8-A-340.85no routeGround 2—
W11SP-GND-1SHADOW8-A-90.85no routeGround 1—
W12OEM-E6-18SP-0V-10.5no routeSensor ground (E2)—
W13OEM-E6-19SP-0V-10.5no routeMAF ground (EVG)—
W14OEM-E7-22SP-0V-10.5no routeCrank position return (NE-)—
W15SP-0V-1SHADOW8-A-40.5no route0V analog reference—
W16SP-0V-1SHADOW8-A-70.5no routeTrigger ground—
W17OEM-E6-2SHADOW8-A-30.5no routeSensor supply +5V (VC)—
W18OEM-E7-23SHADOW8-A-50.5no routeCrank position (NE)—
W19OEM-E7-10SHADOW8-A-60.5no routeCam position (G2)—
W20OEM-E7-28SHADOW8-A-160.5no routeKnock sensor 1 (KNK1)—
W21OEM-E7-27SHADOW8-A-240.5no routeKnock sensor 2 (KNK2)—
W22OEM-E7-11SHADOW8-B-270.5no routeIgnition 1 (IGT)—
W23OEM-E7-12SHADOW8-B-280.5no routeIgnition 2 (IGT2)—
W24OEM-E7-13SHADOW8-B-290.5no routeIgnition 3 (IGT3)—
W25OEM-E6-5SHADOW8-B-20.5no routeInjector 1 (#10)—
W26OEM-E6-6SHADOW8-B-30.5no routeInjector 2 (#20)—
W27OEM-E7-1SHADOW8-B-40.5no routeInjector 3 (#30)—
W28OEM-E7-2SHADOW8-B-50.5no routeInjector 4 (#40)—
W29OEM-E7-3SHADOW8-B-60.5no routeInjector 5 (#50)—
W30OEM-E7-4SHADOW8-B-70.5no routeInjector 6 (#60)—
W31OEM-E3-9SHADOW8-B-210.5no routeIgnition switch (IGSW)—
W32OEM-E7-17SHADOW8-B-100.5no routeVVT-i OCV - (OCV-)—
W33OEM-E7-18SHADOW8-B-110.5no routeVVT-i OCV + (OCV+)—
W34OEM-E7-19SHADOW8-B-120.5no routeETCS throttle clutch - (CL-)—
W35OEM-E7-20SHADOW8-B-130.5no routeETCS throttle clutch + (CL+)—
W36OEM-E6-15SHADOW8-A-100.5no routeAccelerator pedal 1 (VPA)—
W37OEM-E6-23SHADOW8-A-110.5no routeThrottle position 1 (VTA)—
W38OEM-E6-16SHADOW8-A-120.5no routeAccelerator pedal 2 (VPA2)—
W39OEM-E6-24SHADOW8-A-130.5no routeThrottle position 2 (VTA2)—
W40OEM-E6-14SHADOW8-A-140.5no routeCoolant temperature (THW)—
W41OEM-E3-10SHADOW8-B-140.5no routeEFI main relay control (MREL)—
W42OEM-E3-4SHADOW8-B-150.5no routeFuel pump relay (FPR)—
W43OEM-E4-13SHADOW8-B-160.5no routeA/C clutch relay (ACMG)—
W44OEM-E2-25SHADOW8-B-170.5no routeO2 heater right rear (HTR2)—
W45OEM-E2-26SHADOW8-B-80.5no routeO2 heater left rear (HTL2)—
W46OEM-E6-3SHADOW8-B-90.5no routeO2 heater right front (HTR)—
W47OEM-E6-10SHADOW8-A-180.5no routeMass air flow (VG)—
W48OEM-E2-24SHADOW8-A-190.5no routeO2 right rear (OXR2)—
W49OEM-E4-8SHADOW8-A-200.5no routeO2 left rear (OXL2)—
W50OEM-E6-11SHADOW8-A-210.5no routeO2 right front (OXR1)—
W51OEM-E6-12SHADOW8-A-220.5no routeO2 left front (OXL1)—
W52OEM-E5-11SHADOW8-A-260.5no routeVehicle speed sensor (SP2-)—
W53OEM-E5-5SHADOW8-A-270.5no routeVehicle speed sensor (SP2+)—
W54OEM-E7-25SHADOW8-A-280.5no routeIgniter feedback (IGF)—
W55OEM-E4-2SHADOW8-A-290.5no routeStarter signal (STA)—
W56OEM-E4-5SHADOW8-A-300.5no routeDiagnostic/timing check (TC)—
W57OEM-E4-6SHADOW8-A-310.5no routeStop light switch (STP)—

Bill of materials

CategoryPart numberManufacturerDescriptionQtyUnit
connector4-1437290-0TESuperseal 1.0 34-way plug, Key 11.000ea
connector4-1437290-1TESuperseal 1.0 34-way plug, Key 21.000ea
terminal3-1447221-4TESuperseal 1.0 socket terminal, 20 AWG (0.5 sq mm)48.000ea

ECU setup sheet

RoleEngine refEngine signalSensorECU pointECU functionECU classSetup flag
No configured channels.

Findings

Open (10)

SeverityCodeSubjectMessage
errorREQUIRED_UNMAPPEDOEM-E7-7Required OEM function "ETCS throttle motor - (M-)" (hbridge_out) is not connected to the new ECU.
errorREQUIRED_UNMAPPEDOEM-E7-8Required OEM function "ETCS throttle motor + (M+)" (hbridge_out) is not connected to the new ECU.
infoNET_FAMILYOEM-E2-25 ↔ SHADOW8-B-17OEM-E2-25 "O2 heater right rear (HTR2)" [low_side_out] is wired to SHADOW8-B-17 "Aux output 8" [switch_out]. Configure this output as low side.
infoNET_FAMILYOEM-E2-26 ↔ SHADOW8-B-8OEM-E2-26 "O2 heater left rear (HTL2)" [low_side_out] is wired to SHADOW8-B-8 "Injector cylinder 7" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency.
infoNET_FAMILYOEM-E3-10 ↔ SHADOW8-B-14OEM-E3-10 "EFI main relay control (MREL)" [low_side_out] is wired to SHADOW8-B-14 "Aux output 5" [switch_out]. Configure this output as low side.
infoNET_FAMILYOEM-E3-4 ↔ SHADOW8-B-15OEM-E3-4 "Fuel pump relay (FPR)" [low_side_out] is wired to SHADOW8-B-15 "Aux output 6" [switch_out]. Configure this output as low side.
infoNET_FAMILYOEM-E4-13 ↔ SHADOW8-B-16OEM-E4-13 "A/C clutch relay (ACMG)" [low_side_out] is wired to SHADOW8-B-16 "Aux output 7" [switch_out]. Configure this output as low side.
infoNET_FAMILYOEM-E6-14 ↔ SHADOW8-A-14OEM-E6-14 "Coolant temperature (THW)" [temp_in] is wired to SHADOW8-A-14 "Analog voltage 5" [analog_in]. Thermistor on a plain analog input needs a pull-up; check the channel can enable one.
infoNET_FAMILYOEM-E6-3 ↔ SHADOW8-B-9OEM-E6-3 "O2 heater right front (HTR)" [low_side_out] is wired to SHADOW8-B-9 "Injector cylinder 8" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency.
infoUNMAPPEDOEM9 optional OEM pins are not mapped: OEM-E3-11 Serial diagnostic (SIL); OEM-E3-5 Fuel pump control (FC); OEM-E3-6 Check-engine lamp (W); OEM-E4-18 EVAP vapor pressure (PTNK); OEM-E5-12 Canister close valve (CCV); OEM-E6-22 Intake air temperature (THA); OEM-E6-4 O2 heater left front (HTL); OEM-E6-7 EVAP purge VSV (PRG); OEM-E7-5 ACIS intake VSV

Accepted (0)

CodeSubjectReasonBy

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-E7 7: ETCS throttle motor - (M-): no +/− pair in the pinout (multi-phase or half-documented motor); wire by hand - OEM-E7 8: ETCS throttle motor + (M+): no +/− pair in the pinout (multi-phase or half-documented motor); wire by hand Not wired: - SHADOW8-A 17: Knock 1 − left open: the stock knock sensor has one ECU wire; check the ECU manual for single-wire knock sensors - SHADOW8-A 25: Knock 2 − left open: the stock knock sensor has one ECU wire; check the ECU manual for single-wire knock sensors - OEM-E6 4: O2 heater left front (HTL): no free heater_low_side/low_side/relay_control/ls_hs/injector on Emtron Shadow 8 - OEM-E3 5: Fuel pump control (FC): no free low_side/relay_control/heater_low_side/ls_hs/injector on Emtron Shadow 8 - OEM-E3 6: Check-engine lamp (W): no free low_side/relay_control/heater_low_side/ls_hs/injector on Emtron Shadow 8 - OEM-E5 12: Canister close valve (CCV): no free low_side/relay_control/heater_low_side/ls_hs/injector on Emtron Shadow 8 - OEM-E6 7: EVAP purge VSV (PRG): no free low_side/relay_control/heater_low_side/ls_hs/injector on Emtron Shadow 8 - OEM-E7 5: ACIS intake VSV: no free low_side/relay_control/heater_low_side/ls_hs/injector on Emtron Shadow 8 - OEM-E6 22: Intake air temperature (THA): no free thermistor/analog_0_5 on Emtron Shadow 8 - OEM-E4 18: EVAP vapor pressure (PTNK): no free analog_0_5 on Emtron Shadow 8 - OEM-E3 11: Serial diagnostic (SIL): no free k_line on Emtron Shadow 8

Sources

ReliabilityKindTitleURLArchiveCapturedSHA-256
4vendor_docEmtron Shadow 8 ECU datasheethttps://docs.emtronaustralia.com.au/engine-management/datasheets/shadow-8-datasheet/index.htmlarchive2026-10-05f004c9a8d60c
4vendor_docEmtron Shadow 8 pinouthttps://docs.emtronaustralia.com.au/engine-management/wiring/shadow-8/shadow-8-pinout/index.htmlarchive2026-10-05f510053951c7
4service_manualToyota FSM RM779U (2001 Lexus IS300) — DIAGNOSTICS 'TERMINALS OF ECM' (DI-20/21)http://www.2jzgarage.com/wp-content/uploads/2013/04/2001_IS300_ECU_Pinouts.pdf———