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RSX Type-S 2005-06 (K20Z1) → MoTeC M800 universal (auto)

RSX Type-S 2005-06 (K20Z1) — MoTeC — M800
⚠ NOT CHECKED. Don't build from this.
Drawn by Michael Gnankou · Rev 0 · draft · 2026-10-08

Before you start

Statusdraft · not yet verified: nobody has reported building and running this harness
Open errors1: read the Findings page before cutting any wire
Size of the job57 wires · 9 connectors · 7 part lines
Tools715131-1 · wire strippers · multimeter · heat gun + heat-shrink
Terminals3-1447221-4 · 316836-1
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-A-2SP-14V-10.85☐☐☐☐☐☐☐
W2OEM-A-3SP-14V-10.85☐☐☐☐☐☐☐
W3SP-14V-1M800-A-260.85☐☐☐☐☐☐☐
W4OEM-A-4SP-GND-10.85☐☐☐☐☐☐☐
W5OEM-A-5SP-GND-10.85☐☐☐☐☐☐☐
W6OEM-A-8SP-GND-10.85☐☐☐☐☐☐☐
W7OEM-A-9SP-GND-10.85☐☐☐☐☐☐☐
W8OEM-E-4SP-GND-10.85☐☐☐☐☐☐☐
W9SP-GND-1M800-A-100.85☐☐☐☐☐☐☐
W10SP-GND-1M800-A-110.85☐☐☐☐☐☐☐
W11OEM-A-23SP-0V-10.5☐☐☐☐☐☐☐
W12OEM-A-24SP-0V-10.5☐☐☐☐☐☐☐
W13OEM-E-5SP-0V-10.5☐☐☐☐☐☐☐
W14SP-0V-1M800-B-140.5☐☐☐☐☐☐☐
W15SP-0V-1M800-B-150.5☐☐☐☐☐☐☐
W16SP-0V-1M800-B-160.5☐☐☐☐☐☐☐
W17OEM-A-20SP-5V1-10.5☐☐☐☐☐☐☐
W18OEM-E-6SP-5V1-10.5☐☐☐☐☐☐☐
W19SP-5V1-1M800-A-20.5☐☐☐☐☐☐☐
W20OEM-A-21M800-A-90.5☐☐☐☐☐☐☐
W21OEM-A-7M800-B-10.5☐☐☐☐☐☐☐
W22OEM-A-19M800-B-20.5☐☐☐☐☐☐☐
W23OEM-A-16M800-A-30.5☐☐☐☐☐☐☐
W24OEM-A-15M800-A-40.5☐☐☐☐☐☐☐
W25OEM-A-14M800-A-50.5☐☐☐☐☐☐☐
W26OEM-A-13M800-A-60.5☐☐☐☐☐☐☐
W27OEM-B-5M800-A-190.5☐☐☐☐☐☐☐
W28OEM-B-4M800-A-200.5☐☐☐☐☐☐☐
W29OEM-B-3M800-A-210.5☐☐☐☐☐☐☐
W30OEM-B-2M800-A-220.5☐☐☐☐☐☐☐
W31OEM-E-8M800-A-180.5☐☐☐☐☐☐☐
W32OEM-E-12M800-A-10.5☐☐☐☐☐☐☐
W33OEM-E-17M800-A-230.5☐☐☐☐☐☐☐
W34OEM-E-18M800-A-240.5☐☐☐☐☐☐☐
W35OEM-E-9M800-A-310.5☐☐☐☐☐☐☐
W36OEM-E-21M800-A-320.5☐☐☐☐☐☐☐
W37OEM-A-10M800-A-330.5☐☐☐☐☐☐☐
W38OEM-A-12M800-A-340.5☐☐☐☐☐☐☐
W39OEM-B-6M800-A-270.5☐☐☐☐☐☐☐
W40OEM-B-1M800-A-280.5☐☐☐☐☐☐☐
W41OEM-B-18M800-A-290.5☐☐☐☐☐☐☐
W42OEM-B-21M800-A-300.5☐☐☐☐☐☐☐
W43OEM-A-31M800-B-260.5☐☐☐☐☐☐☐
W44OEM-A-28M800-B-250.5☐☐☐☐☐☐☐
W45OEM-A-30M800-A-140.5☐☐☐☐☐☐☐
W46OEM-A-29M800-A-150.5☐☐☐☐☐☐☐
W47OEM-E-20M800-A-160.5☐☐☐☐☐☐☐
W48OEM-B-8M800-B-30.5☐☐☐☐☐☐☐
W49OEM-B-17M800-B-40.5☐☐☐☐☐☐☐
W50OEM-B-13M800-A-170.5☐☐☐☐☐☐☐
W51OEM-E-14M800-A-250.5☐☐☐☐☐☐☐
W52OEM-E-15M800-B-200.5☐☐☐☐☐☐☐
W53OEM-A-18M800-B-80.5☐☐☐☐☐☐☐
W54OEM-B-10M800-B-90.5☐☐☐☐☐☐☐
W55OEM-B-11M800-B-100.5☐☐☐☐☐☐☐
W56OEM-E-16M800-B-110.5☐☐☐☐☐☐☐
W57OEM-E-22M800-B-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
1M800-A-2M800-B-14open (OL)5 V sensor reference must not touch sensor ground
2M800-A-26M800-A-10open (OL)+12 V supply must not touch power ground
3M800-A-26M800-B-14open (OL)+12 V supply must not touch sensor ground
4M800-A-9M800-B-14open (OL)5 V sensor reference must not touch sensor ground
5M800-A-10M800-A-2open (OL)power ground must not touch 5 V sensor reference
6M800-A-10M800-A-9open (OL)power ground must not touch 5 V sensor reference
7M800-A-26M800-A-2open (OL)+12 V supply must not touch 5 V sensor reference
8M800-A-26M800-A-9open (OL)+12 V supply must not touch 5 V sensor reference

Revisions

RevLabelByDate
No revisions yet.

Schematic

M800-AM800-BOEM-AOEM-BOEM-ESP-0VSP-14VSP-5V1SP-GND

Connectors

M800-A

Mating face
M800-A-1 · AUX21M800-A-2 · 5V Engine Sensor Supply2M800-A-3 · IGN13M800-A-4 · IGN24M800-A-5 · IGN35M800-A-6 · IGN46M800-A-7 · IGN57M800-A-8 · IGN68M800-A-9 · 5V Auxiliary Sensor Supply9M800-A-10 · GND Battery Negative10M800-A-11 · GND Battery Negative11M800-A-12 · 8V Engine Sensor Supply12M800-A-13 · 8V Auxiliary Sensor and CAN Supply13M800-A-14 · AV114M800-A-15 · Analog Voltage Input 215M800-A-16 · Analog Voltage Input 316M800-A-17 · Analog Voltage Input 417M800-A-18 · AUX118M800-A-19 · INJ119M800-A-20 · INJ220M800-A-21 · INJ321M800-A-22 · INJ422M800-A-23 · AUX323M800-A-24 · AUX424M800-A-25 · Analog Voltage Input 525M800-A-26 · VBAT Battery Positive26M800-A-27 · INJ527M800-A-28 · INJ628M800-A-29 · INJ729M800-A-30 · INJ830M800-A-31 · AUX531M800-A-32 · AUX632M800-A-33 · AUX733M800-A-34 · AUX834
Wire side
M800-A-1 · AUX21M800-A-2 · 5V Engine Sensor Supply2M800-A-3 · IGN13M800-A-4 · IGN24M800-A-5 · IGN35M800-A-6 · IGN46M800-A-7 · IGN57M800-A-8 · IGN68M800-A-9 · 5V Auxiliary Sensor Supply9M800-A-10 · GND Battery Negative10M800-A-11 · GND Battery Negative11M800-A-12 · 8V Engine Sensor Supply12M800-A-13 · 8V Auxiliary Sensor and CAN Supply13M800-A-14 · AV114M800-A-15 · Analog Voltage Input 215M800-A-16 · Analog Voltage Input 316M800-A-17 · Analog Voltage Input 417M800-A-18 · AUX118M800-A-19 · INJ119M800-A-20 · INJ220M800-A-21 · INJ321M800-A-22 · INJ422M800-A-23 · AUX323M800-A-24 · AUX424M800-A-25 · Analog Voltage Input 525M800-A-26 · VBAT Battery Positive26M800-A-27 · INJ527M800-A-28 · INJ628M800-A-29 · INJ729M800-A-30 · INJ830M800-A-31 · AUX531M800-A-32 · AUX632M800-A-33 · AUX733M800-A-34 · AUX834
CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1AUX2—W32—0.5OEM-E-12———
25V Engine Sensor Supply—W19—0.5SP-5V1-1———
3IGN1—W23—0.5OEM-A-16———
4IGN2—W24—0.5OEM-A-15———
5IGN3—W25—0.5OEM-A-14———
6IGN4—W26—0.5OEM-A-13———
7IGN5————————
8IGN6————————
95V Auxiliary Sensor Supply—W20—0.5OEM-A-21———
10GND Battery Negative—W9—0.85SP-GND-1———
11GND Battery Negative—W10—0.85SP-GND-1———
128V Engine Sensor Supply————————
138V Auxiliary Sensor and CAN Supply————————
14AV1—W45—0.5OEM-A-30———
15Analog Voltage Input 2—W46—0.5OEM-A-29———
16Analog Voltage Input 3—W47—0.5OEM-E-20———
17Analog Voltage Input 4—W50—0.5OEM-B-13———
18AUX1—W31—0.5OEM-E-8———
19INJ1—W27—0.5OEM-B-5———
20INJ2—W28—0.5OEM-B-4———
21INJ3—W29—0.5OEM-B-3———
22INJ4—W30—0.5OEM-B-2———
23AUX3—W33—0.5OEM-E-17———
24AUX4—W34—0.5OEM-E-18———
25Analog Voltage Input 5—W51—0.5OEM-E-14———
26VBAT Battery Positive—W3—0.85SP-14V-1———
27INJ5—W39—0.5OEM-B-6———
28INJ6—W40—0.5OEM-B-1———
29INJ7—W41—0.5OEM-B-18———
30INJ8—W42—0.5OEM-B-21———
31AUX5—W35—0.5OEM-E-9———
32AUX6—W36—0.5OEM-E-21———
33AUX7—W37—0.5OEM-A-10———
34AUX8—W38—0.5OEM-A-12———

M800-B

Mating face
M800-B-1 · Crank Reference Timing Input1M800-B-2 · Cam Sync Timing Input2M800-B-3 · Analog Temperature Input 13M800-B-4 · Analog Temperature Input 24M800-B-5 · Analog Temperature Input 35M800-B-6 · Analog Temperature Input 46M800-B-7 · Analog Temperature Input 57M800-B-8 · Digital Input 18M800-B-9 · Digital Input 29M800-B-10 · Digital Input 310M800-B-11 · Digital Input 411M800-B-12 · Lambda2 Sense Voltage12M800-B-13 · Lambda2 Pump Current13M800-B-14 · 0V Comms Reference14M800-B-15 · 0V Auxiliary Sensor Supply15M800-B-16 · 0V Engine Sensor Supply16M800-B-17 · RS232 Transmit Data17M800-B-18 · RS232 Receive Data18M800-B-19 · Analog Temperature Input 619M800-B-20 · Analog Voltage Input 620M800-B-21 · AV721M800-B-22 · AV822M800-B-23 · CAN Bus High23M800-B-24 · CAN Bus Low24M800-B-25 · Lambda1 Sense Voltage25M800-B-26 · Lambda1 Pump Current26
Wire side
M800-B-1 · Crank Reference Timing Input1M800-B-2 · Cam Sync Timing Input2M800-B-3 · Analog Temperature Input 13M800-B-4 · Analog Temperature Input 24M800-B-5 · Analog Temperature Input 35M800-B-6 · Analog Temperature Input 46M800-B-7 · Analog Temperature Input 57M800-B-8 · Digital Input 18M800-B-9 · Digital Input 29M800-B-10 · Digital Input 310M800-B-11 · Digital Input 411M800-B-12 · Lambda2 Sense Voltage12M800-B-13 · Lambda2 Pump Current13M800-B-14 · 0V Comms Reference14M800-B-15 · 0V Auxiliary Sensor Supply15M800-B-16 · 0V Engine Sensor Supply16M800-B-17 · RS232 Transmit Data17M800-B-18 · RS232 Receive Data18M800-B-19 · Analog Temperature Input 619M800-B-20 · Analog Voltage Input 620M800-B-21 · AV721M800-B-22 · AV822M800-B-23 · CAN Bus High23M800-B-24 · CAN Bus Low24M800-B-25 · Lambda1 Sense Voltage25M800-B-26 · Lambda1 Pump Current26
CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Crank Reference Timing Input—W21—0.5OEM-A-7———
2Cam Sync Timing Input—W22—0.5OEM-A-19———
3Analog Temperature Input 1—W48—0.5OEM-B-8———
4Analog Temperature Input 2—W49—0.5OEM-B-17———
5Analog Temperature Input 3————————
6Analog Temperature Input 4————————
7Analog Temperature Input 5————————
8Digital Input 1—W53—0.5OEM-A-18———
9Digital Input 2—W54—0.5OEM-B-10———
10Digital Input 3—W55—0.5OEM-B-11———
11Digital Input 4—W56—0.5OEM-E-16———
12Lambda2 Sense Voltage————————
13Lambda2 Pump Current————————
140V Comms Reference—W14—0.5SP-0V-1———
150V Auxiliary Sensor Supply—W15—0.5SP-0V-1———
160V Engine Sensor Supply—W16—0.5SP-0V-1———
17RS232 Transmit Data————————
18RS232 Receive Data————————
19Analog Temperature Input 6————————
20Analog Voltage Input 6—W52—0.5OEM-E-15———
21AV7—W57—0.5OEM-E-22———
22AV8————————
23CAN Bus High————————
24CAN Bus Low————————
25Lambda1 Sense Voltage—W44—0.5OEM-A-28———
26Lambda1 Pump Current—W43—0.5OEM-A-31———

OEM-A

Mating face
Wire side
CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Knock sensor (KS)————————
2Ignition power 2 (IGP2)—W1—0.85SP-14V-1———
3Ignition power 1 (IGP1)—W2—0.85SP-14V-1———
4Power ground 2 (PG2)—W4—0.85SP-GND-1———
5Power ground 1 (PG1)—W5—0.85SP-GND-1———
6Camshaft position B (CMP B)————————
7Crank position sensor (CKP)—W21—0.5M800-B-1———
8Logic ground 2 (LG2)—W6—0.85SP-GND-1———
9Logic ground 1 (LG1)—W7—0.85SP-GND-1———
10A/F sensor heater control (AFSHTC)—W37—0.5M800-A-33———
11—————————
12Idle air control valve (IACV)—W38—0.5M800-A-34———
13Ignition coil 4 (IGPLS4)—W26—0.5M800-A-6———
14Ignition coil 3 (IGPLS3)—W25—0.5M800-A-5———
15Ignition coil 2 (IGPLS2)—W24—0.5M800-A-4———
16Ignition coil 1 (IGPLS1)—W23—0.5M800-A-3———
17—————————
18Neutral position switch (NC)—W53—0.5M800-B-8———
19Camshaft position A (CMP A)—W22—0.5M800-B-2———
20Sensor 5V supply 2 (VCC2)—W17—0.5SP-5V1-1———
21Sensor 5V supply 1 (VCC1)—W20—0.5M800-A-9———
22—————————
23Sensor ground 2 (SG2)—W11—0.5SP-0V-1———
24Sensor ground 1 (SG1)—W12—0.5SP-0V-1———
25—————————
26—————————
27—————————
28A/F sensor - (AFS-, wideband Vs)—W44—0.5M800-B-25———
29Throttle position sensor (TPS)—W46—0.5M800-A-15———
30Manifold absolute pressure (MAP)—W45—0.5M800-A-14———
31A/F sensor + (AFS+, wideband Ip)—W43—0.5M800-B-26———

OEM-B

Mating face
Wire side
CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1VTC oil control solenoid (+)—W40—0.5M800-A-28———
2Injector 4 (INJ4)—W30—0.5M800-A-22———
3Injector 3 (INJ3)—W29—0.5M800-A-21———
4Injector 2 (INJ2)—W28—0.5M800-A-20———
5Injector 1 (INJ1)—W27—0.5M800-A-19———
6VTEC solenoid (VTS)—W39—0.5M800-A-27———
7—————————
8Coolant temp sensor (ECT)—W48—0.5M800-B-3———
9—————————
10Alternator L signal (ALTL)—W54—0.5M800-B-9———
11VTEC oil pressure switch (VTPSW)—W55—0.5M800-B-10———
12—————————
13Alternator FR signal (ALTF)—W50—0.5M800-A-17———
14—————————
15—————————
16—————————
17Intake air temp sensor (IAT)—W49—0.5M800-B-4———
18Alternator control (ALTC)—W41—0.5M800-A-29———
19—————————
20—————————
21Evap canister purge valve (PCS)—W42—0.5M800-A-30———
22—————————
23—————————
24—————————

OEM-E

Mating face
Wire side
CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1—————————
2—————————
3Reverse lockout solenoid (RVS, Type-S)————————
4Logic ground 3 (LG3)—W8—0.85SP-GND-1———
5Sensor ground 3 (SG3)—W13—0.5SP-0V-1———
6Sensor 5V supply 3 (VCC3)—W18—0.5SP-5V1-1———
7—————————
8Main relay control (MRLY)—W31—0.5M800-A-18———
9A/F sensor heater relay control (AFSHTCR)—W35—0.5M800-A-31———
10Ignition switch signal (IG1)————————
11—————————
12Radiator fan control (FANC)—W32—0.5M800-A-1———
13Multiplex communication (SEFMJ)————————
14Fuel tank pressure sensor (FTP)—W51—0.5M800-A-25———
15Electrical load detector (ELD)—W52—0.5M800-B-20———
16Power steering pressure switch (PSPSW)—W56—0.5M800-B-11———
17Immobilizer fuel pump relay (IMO FPR)—W33—0.5M800-A-23———
18A/C clutch relay (ACC)—W34—0.5M800-A-24———
19Evap vent shut valve (VSV)————————
20Secondary heated O2 sensor (SHO2S)—W47—0.5M800-A-16———
21Secondary O2 heater control (SO2SHTC)—W36—0.5M800-A-32———
22Brake switch (BKSW)—W57—0.5M800-B-21———
23K-line (diagnostic)————————
24—————————
25Engine speed pulse / tacho (NEP)————————
26Vehicle speed output (VSSOUT)————————
27Immobilizer code (IMOCD)————————
28—————————
29Service check signal (SCS)————————
30Write enable signal (WEN)————————
31Malfunction indicator lamp (MIL)————————

SP-0V

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1——W11—0.5OEM-A-23———
1——W12—0.5OEM-A-24———
1——W13—0.5OEM-E-5———
1——W14—0.5M800-B-14———
1——W15—0.5M800-B-15———
1——W16—0.5M800-B-16———

SP-14V

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1——W1—0.85OEM-A-2———
1——W2—0.85OEM-A-3———
1——W3—0.85M800-A-26———

SP-5V1

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1——W17—0.5OEM-A-20———
1——W18—0.5OEM-E-6———
1——W19—0.5M800-A-2———

SP-GND

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1——W4—0.85OEM-A-4———
1——W5—0.85OEM-A-5———
1——W6—0.85OEM-A-8———
1——W7—0.85OEM-A-9———
1——W8—0.85OEM-E-4———
1——W9—0.85M800-A-10———
1——W10—0.85M800-A-11———

Pin map

OEM pointOEM functionOEM familyTarget pointTarget functionTarget familyWire colourEvidence
OEM-A-1Knock sensor (KS)knock_in———single_source
OEM-A-10A/F sensor heater control (AFSHTC)low_side_outM800-A-33AUX7switch_outsingle_source
OEM-A-12Idle air control valve (IACV)low_side_outM800-A-34AUX8switch_outsingle_source
OEM-A-13Ignition coil 4 (IGPLS4)ignition_outM800-A-6IGN4ignition_outsingle_source
OEM-A-14Ignition coil 3 (IGPLS3)ignition_outM800-A-5IGN3ignition_outsingle_source
OEM-A-15Ignition coil 2 (IGPLS2)ignition_outM800-A-4IGN2ignition_outsingle_source
OEM-A-16Ignition coil 1 (IGPLS1)ignition_outM800-A-3IGN1ignition_outsingle_source
OEM-A-18Neutral position switch (NC)digital_inM800-B-8Digital Input 1digital_insingle_source
OEM-A-19Camshaft position A (CMP A)trigger_inM800-B-2Cam Sync Timing Inputtrigger_insingle_source
OEM-A-2Ignition power 2 (IGP2)power_inM800-A-26VBAT Battery Positivepower_insingle_source
OEM-A-20Sensor 5V supply 2 (VCC2)vrefM800-A-25V Engine Sensor Supplyvrefsingle_source
OEM-A-21Sensor 5V supply 1 (VCC1)vrefM800-A-95V Auxiliary Sensor Supplyvrefsingle_source
OEM-A-23Sensor ground 2 (SG2)sensor_groundM800-B-14 + M800-B-15 + M800-B-160V Comms Reference + 0V Auxiliary Sensor Supply + 0V Engine Sensor Supplysensor_groundsingle_source
OEM-A-24Sensor ground 1 (SG1)sensor_groundM800-B-14 + M800-B-15 + M800-B-160V Comms Reference + 0V Auxiliary Sensor Supply + 0V Engine Sensor Supplysensor_groundsingle_source
OEM-A-28A/F sensor - (AFS-, wideband Vs)wb_vsM800-B-25Lambda1 Sense Voltagewb_vssingle_source
OEM-A-29Throttle position sensor (TPS)analog_inM800-A-15Analog Voltage Input 2analog_insingle_source
OEM-A-3Ignition power 1 (IGP1)power_inM800-A-26VBAT Battery Positivepower_insingle_source
OEM-A-30Manifold absolute pressure (MAP)analog_inM800-A-14AV1analog_insingle_source
OEM-A-31A/F sensor + (AFS+, wideband Ip)wb_ipM800-B-26Lambda1 Pump Currentwb_ipsingle_source
OEM-A-4Power ground 2 (PG2)groundM800-A-10 + M800-A-11GND Battery Negative + GND Battery Negativegroundsingle_source
OEM-A-5Power ground 1 (PG1)groundM800-A-10 + M800-A-11GND Battery Negative + GND Battery Negativegroundsingle_source
OEM-A-6Camshaft position B (CMP B)trigger_in———single_source
OEM-A-7Crank position sensor (CKP)trigger_inM800-B-1Crank Reference Timing Inputtrigger_insingle_source
OEM-A-8Logic ground 2 (LG2)groundM800-A-10 + M800-A-11GND Battery Negative + GND Battery Negativegroundsingle_source
OEM-A-9Logic ground 1 (LG1)groundM800-A-10 + M800-A-11GND Battery Negative + GND Battery Negativegroundsingle_source
OEM-B-1VTC oil control solenoid (+)low_side_outM800-A-28INJ6injector_outsingle_source
OEM-B-10Alternator L signal (ALTL)digital_inM800-B-9Digital Input 2digital_insingle_source
OEM-B-11VTEC oil pressure switch (VTPSW)digital_inM800-B-10Digital Input 3digital_insingle_source
OEM-B-13Alternator FR signal (ALTF)analog_inM800-A-17Analog Voltage Input 4analog_insingle_source
OEM-B-17Intake air temp sensor (IAT)temp_inM800-B-4Analog Temperature Input 2temp_insingle_source
OEM-B-18Alternator control (ALTC)low_side_outM800-A-29INJ7injector_outsingle_source
OEM-B-2Injector 4 (INJ4)injector_outM800-A-22INJ4injector_outsingle_source
OEM-B-21Evap canister purge valve (PCS)low_side_outM800-A-30INJ8injector_outsingle_source
OEM-B-3Injector 3 (INJ3)injector_outM800-A-21INJ3injector_outsingle_source
OEM-B-4Injector 2 (INJ2)injector_outM800-A-20INJ2injector_outsingle_source
OEM-B-5Injector 1 (INJ1)injector_outM800-A-19INJ1injector_outsingle_source
OEM-B-6VTEC solenoid (VTS)low_side_outM800-A-27INJ5injector_outsingle_source
OEM-B-8Coolant temp sensor (ECT)temp_inM800-B-3Analog Temperature Input 1temp_insingle_source
OEM-E-10Ignition switch signal (IG1)digital_in———single_source
OEM-E-12Radiator fan control (FANC)low_side_outM800-A-1AUX2switch_outsingle_source
OEM-E-13Multiplex communication (SEFMJ)serial———single_source
OEM-E-14Fuel tank pressure sensor (FTP)analog_inM800-A-25Analog Voltage Input 5analog_insingle_source
OEM-E-15Electrical load detector (ELD)analog_inM800-B-20Analog Voltage Input 6analog_insingle_source
OEM-E-16Power steering pressure switch (PSPSW)digital_inM800-B-11Digital Input 4digital_insingle_source
OEM-E-17Immobilizer fuel pump relay (IMO FPR)low_side_outM800-A-23AUX3switch_outsingle_source
OEM-E-18A/C clutch relay (ACC)low_side_outM800-A-24AUX4switch_outsingle_source
OEM-E-19Evap vent shut valve (VSV)low_side_out———single_source
OEM-E-20Secondary heated O2 sensor (SHO2S)lambda_nb_inM800-A-16Analog Voltage Input 3analog_insingle_source
OEM-E-21Secondary O2 heater control (SO2SHTC)low_side_outM800-A-32AUX6switch_outsingle_source
OEM-E-22Brake switch (BKSW)digital_inM800-B-21AV7analog_insingle_source
OEM-E-23K-line (diagnostic)serial———single_source
OEM-E-25Engine speed pulse / tacho (NEP)tacho_out———single_source
OEM-E-26Vehicle speed output (VSSOUT)tacho_out———single_source
OEM-E-27Immobilizer code (IMOCD)————single_source
OEM-E-29Service check signal (SCS)————single_source
OEM-E-3Reverse lockout solenoid (RVS, Type-S)low_side_out———single_source
OEM-E-30Write enable signal (WEN)————single_source
OEM-E-31Malfunction indicator lamp (MIL)low_side_out———single_source
OEM-E-4Logic ground 3 (LG3)groundM800-A-10 + M800-A-11GND Battery Negative + GND Battery Negativegroundsingle_source
OEM-E-5Sensor ground 3 (SG3)sensor_groundM800-B-14 + M800-B-15 + M800-B-160V Comms Reference + 0V Auxiliary Sensor Supply + 0V Engine Sensor Supplysensor_groundsingle_source
OEM-E-6Sensor 5V supply 3 (VCC3)vrefM800-A-25V Engine Sensor Supplyvrefsingle_source
OEM-E-8Main relay control (MRLY)low_side_outM800-A-18AUX1switch_outsingle_source
OEM-E-9A/F sensor heater relay control (AFSHTCR)low_side_outM800-A-31AUX5switch_outsingle_source

Cut list

WireFromToGauge (mm²)ColourLengthSignalIdent
W1OEM-A-2SP-14V-10.85no routeIgnition power 2 (IGP2)—
W2OEM-A-3SP-14V-10.85no routeIgnition power 1 (IGP1)—
W3SP-14V-1M800-A-260.85no routeVBAT Battery Positive—
W4OEM-A-4SP-GND-10.85no routePower ground 2 (PG2)—
W5OEM-A-5SP-GND-10.85no routePower ground 1 (PG1)—
W6OEM-A-8SP-GND-10.85no routeLogic ground 2 (LG2)—
W7OEM-A-9SP-GND-10.85no routeLogic ground 1 (LG1)—
W8OEM-E-4SP-GND-10.85no routeLogic ground 3 (LG3)—
W9SP-GND-1M800-A-100.85no routeGND Battery Negative—
W10SP-GND-1M800-A-110.85no routeGND Battery Negative—
W11OEM-A-23SP-0V-10.5no routeSensor ground 2 (SG2)—
W12OEM-A-24SP-0V-10.5no routeSensor ground 1 (SG1)—
W13OEM-E-5SP-0V-10.5no routeSensor ground 3 (SG3)—
W14SP-0V-1M800-B-140.5no route0V Comms Reference—
W15SP-0V-1M800-B-150.5no route0V Auxiliary Sensor Supply—
W16SP-0V-1M800-B-160.5no route0V Engine Sensor Supply—
W17OEM-A-20SP-5V1-10.5no routeSensor 5V supply 2 (VCC2)—
W18OEM-E-6SP-5V1-10.5no routeSensor 5V supply 3 (VCC3)—
W19SP-5V1-1M800-A-20.5no route5V Engine Sensor Supply—
W20OEM-A-21M800-A-90.5no routeSensor 5V supply 1 (VCC1)—
W21OEM-A-7M800-B-10.5no routeCrank position sensor (CKP)—
W22OEM-A-19M800-B-20.5no routeCamshaft position A (CMP A)—
W23OEM-A-16M800-A-30.5no routeIgnition coil 1 (IGPLS1)—
W24OEM-A-15M800-A-40.5no routeIgnition coil 2 (IGPLS2)—
W25OEM-A-14M800-A-50.5no routeIgnition coil 3 (IGPLS3)—
W26OEM-A-13M800-A-60.5no routeIgnition coil 4 (IGPLS4)—
W27OEM-B-5M800-A-190.5no routeInjector 1 (INJ1)—
W28OEM-B-4M800-A-200.5no routeInjector 2 (INJ2)—
W29OEM-B-3M800-A-210.5no routeInjector 3 (INJ3)—
W30OEM-B-2M800-A-220.5no routeInjector 4 (INJ4)—
W31OEM-E-8M800-A-180.5no routeMain relay control (MRLY)—
W32OEM-E-12M800-A-10.5no routeRadiator fan control (FANC)—
W33OEM-E-17M800-A-230.5no routeImmobilizer fuel pump relay (IMO FPR)—
W34OEM-E-18M800-A-240.5no routeA/C clutch relay (ACC)—
W35OEM-E-9M800-A-310.5no routeA/F sensor heater relay control (AFSHTCR)—
W36OEM-E-21M800-A-320.5no routeSecondary O2 heater control (SO2SHTC)—
W37OEM-A-10M800-A-330.5no routeA/F sensor heater control (AFSHTC)—
W38OEM-A-12M800-A-340.5no routeIdle air control valve (IACV)—
W39OEM-B-6M800-A-270.5no routeVTEC solenoid (VTS)—
W40OEM-B-1M800-A-280.5no routeVTC oil control solenoid (+)—
W41OEM-B-18M800-A-290.5no routeAlternator control (ALTC)—
W42OEM-B-21M800-A-300.5no routeEvap canister purge valve (PCS)—
W43OEM-A-31M800-B-260.5no routeA/F sensor + (AFS+, wideband Ip)—
W44OEM-A-28M800-B-250.5no routeA/F sensor - (AFS-, wideband Vs)—
W45OEM-A-30M800-A-140.5no routeManifold absolute pressure (MAP)—
W46OEM-A-29M800-A-150.5no routeThrottle position sensor (TPS)—
W47OEM-E-20M800-A-160.5no routeSecondary heated O2 sensor (SHO2S)—
W48OEM-B-8M800-B-30.5no routeCoolant temp sensor (ECT)—
W49OEM-B-17M800-B-40.5no routeIntake air temp sensor (IAT)—
W50OEM-B-13M800-A-170.5no routeAlternator FR signal (ALTF)—
W51OEM-E-14M800-A-250.5no routeFuel tank pressure sensor (FTP)—
W52OEM-E-15M800-B-200.5no routeElectrical load detector (ELD)—
W53OEM-A-18M800-B-80.5no routeNeutral position switch (NC)—
W54OEM-B-10M800-B-90.5no routeAlternator L signal (ALTL)—
W55OEM-B-11M800-B-100.5no routeVTEC oil pressure switch (VTPSW)—
W56OEM-E-16M800-B-110.5no routePower steering pressure switch (PSPSW)—
W57OEM-E-22M800-B-210.5no routeBrake switch (BKSW)—

Bill of materials

CategoryPart numberManufacturerDescriptionQtyUnit
connector1318682-6TEK-series ECU harness plug A (040-3 HD plug assy, 31P)1.000ea
connector3-1437290-7TESuperseal 1.0 26-way plug1.000ea
connector353029-1TEK-series ECU harness plug B (040 H/D-3 plug HSG assy, 24P)1.000ea
connector353826-1TEK-series ECU harness plug E (040 HD 31P plug HSG assy-B, 31P)1.000ea
connector4-1437290-0TESuperseal 1.0 34-way plug, Key 11.000ea
terminal3-1447221-4TESuperseal 1.0 socket terminal, 20 AWG (0.5 sq mm)45.000ea
terminal316836-1TEMultilock 040 III HD socket, tin, 22–18 AWG (0.3–0.85 mm²)50.000ea

ECU setup sheet

RoleEngine refEngine signalSensorECU pointECU functionECU classSetup flag
No configured channels.

Findings

Open (30)

SeverityCodeSubjectMessage
errorREQUIRED_UNMAPPEDOEM-A-6Required OEM function "Camshaft position B (CMP B)" (trigger_in) is not connected to the new ECU.
warnDATASET_GAPRSX ECU A6 of 31 cavities on RSX ECU A have no pin data (11,17,22,25,26,27). Anything there is invisible to these checks.
warnDATASET_GAPRSX ECU B11 of 24 cavities on RSX ECU B have no pin data (7,9,12,14,15,16,19,20,22,23,24). Anything there is invisible to these checks.
warnDATASET_GAPRSX ECU E6 of 31 cavities on RSX ECU E have no pin data (1,2,7,11,24,28). Anything there is invisible to these checks.
warnLOAD_UNKNOWNM800-A-1M800-A-1 "AUX2" drives OEM-E-12 Radiator fan control (FANC) (load 0.2 A) but its current rating is unknown. Check the ECU manual.
warnLOAD_UNKNOWNM800-A-18M800-A-18 "AUX1" drives OEM-E-8 Main relay control (MRLY) (load 0.2 A) but its current rating is unknown. Check the ECU manual.
warnLOAD_UNKNOWNM800-A-19M800-A-19 "INJ1" drives OEM-B-5 Injector 1 (INJ1) (load 1.2 A) but its current rating is unknown. Check the ECU manual.
warnLOAD_UNKNOWNM800-A-20M800-A-20 "INJ2" drives OEM-B-4 Injector 2 (INJ2) (load 1.2 A) but its current rating is unknown. Check the ECU manual.
warnLOAD_UNKNOWNM800-A-21M800-A-21 "INJ3" drives OEM-B-3 Injector 3 (INJ3) (load 1.2 A) but its current rating is unknown. Check the ECU manual.
warnLOAD_UNKNOWNM800-A-22M800-A-22 "INJ4" drives OEM-B-2 Injector 4 (INJ4) (load 1.2 A) but its current rating is unknown. Check the ECU manual.
warnLOAD_UNKNOWNM800-A-23M800-A-23 "AUX3" drives OEM-E-17 Immobilizer fuel pump relay (IMO FPR) (load 0.2 A) but its current rating is unknown. Check the ECU manual.
warnLOAD_UNKNOWNM800-A-24M800-A-24 "AUX4" drives OEM-E-18 A/C clutch relay (ACC) (load 0.2 A) but its current rating is unknown. Check the ECU manual.
warnLOAD_UNKNOWNM800-A-27M800-A-27 "INJ5" drives OEM-B-6 VTEC solenoid (VTS) (load 1.0 A) but its current rating is unknown. Check the ECU manual.
warnLOAD_UNKNOWNM800-A-31M800-A-31 "AUX5" drives OEM-E-9 A/F sensor heater relay control (AFSHTCR) (load 0.2 A) but its current rating is unknown. Check the ECU manual.
warnLOAD_UNKNOWNM800-A-34M800-A-34 "AUX8" drives OEM-A-12 Idle air control valve (IACV) (load 1.0 A) but its current rating is unknown. Check the ECU manual.
warnNET_FAMILYOEM-E-22 ↔ M800-B-21OEM-E-22 "Brake switch (BKSW)" [digital_in] is wired to M800-B-21 "AV7" [analog_in]. Analog and digital on one net. A switch on an analog input works with a pull-up and a threshold; an analog sensor on a digital input loses its value.
warnSUPPLY_GROUPM800-A-2 + OEM-A-20 + OEM-E-6 + SP-5V1-1Supplies meant to stay independent share one net: OEM-A-20 [k_vcc2], OEM-E-6 [k_vcc3]. The new ECU has no free 5 V reference, so they share one: normal on a standalone, but a short on any of these sensors drops them all.
infoNET_FAMILYOEM-A-10 ↔ M800-A-33OEM-A-10 "A/F sensor heater control (AFSHTC)" [low_side_out] is wired to M800-A-33 "AUX7" [switch_out]. Configure this output as low side.
infoNET_FAMILYOEM-A-12 ↔ M800-A-34OEM-A-12 "Idle air control valve (IACV)" [low_side_out] is wired to M800-A-34 "AUX8" [switch_out]. Configure this output as low side.
infoNET_FAMILYOEM-B-1 ↔ M800-A-28OEM-B-1 "VTC oil control solenoid (+)" [low_side_out] is wired to M800-A-28 "INJ6" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency.
infoNET_FAMILYOEM-B-18 ↔ M800-A-29OEM-B-18 "Alternator control (ALTC)" [low_side_out] is wired to M800-A-29 "INJ7" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency.
infoNET_FAMILYOEM-B-21 ↔ M800-A-30OEM-B-21 "Evap canister purge valve (PCS)" [low_side_out] is wired to M800-A-30 "INJ8" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency.
infoNET_FAMILYOEM-B-6 ↔ M800-A-27OEM-B-6 "VTEC solenoid (VTS)" [low_side_out] is wired to M800-A-27 "INJ5" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency.
infoNET_FAMILYOEM-E-12 ↔ M800-A-1OEM-E-12 "Radiator fan control (FANC)" [low_side_out] is wired to M800-A-1 "AUX2" [switch_out]. Configure this output as low side.
infoNET_FAMILYOEM-E-17 ↔ M800-A-23OEM-E-17 "Immobilizer fuel pump relay (IMO FPR)" [low_side_out] is wired to M800-A-23 "AUX3" [switch_out]. Configure this output as low side.
infoNET_FAMILYOEM-E-18 ↔ M800-A-24OEM-E-18 "A/C clutch relay (ACC)" [low_side_out] is wired to M800-A-24 "AUX4" [switch_out]. Configure this output as low side.
infoNET_FAMILYOEM-E-21 ↔ M800-A-32OEM-E-21 "Secondary O2 heater control (SO2SHTC)" [low_side_out] is wired to M800-A-32 "AUX6" [switch_out]. Configure this output as low side.
infoNET_FAMILYOEM-E-8 ↔ M800-A-18OEM-E-8 "Main relay control (MRLY)" [low_side_out] is wired to M800-A-18 "AUX1" [switch_out]. Configure this output as low side.
infoNET_FAMILYOEM-E-9 ↔ M800-A-31OEM-E-9 "A/F sensor heater relay control (AFSHTCR)" [low_side_out] is wired to M800-A-31 "AUX5" [switch_out]. Configure this output as low side.
infoUNMAPPEDOEM12 optional OEM pins are not mapped: OEM-A-1 Knock sensor (KS); OEM-E-10 Ignition switch signal (IG1); OEM-E-13 Multiplex communication (SEFMJ); OEM-E-19 Evap vent shut valve (VSV); OEM-E-23 K-line (diagnostic); OEM-E-25 Engine speed pulse / tacho (NEP); OEM-E-26 Vehicle speed output (VSSOUT); OEM-E-27 Immobilizer code (IMOCD); OEM-E-29 Service check signal (SCS); OEM-E-3 Reverse lockout solenoid (RVS, Type-S); OEM-E-30 Write enable signal (WEN); OEM-E-31 Malfunction indicator lamp (MIL)

Accepted (0)

CodeSubjectReasonBy

Notes

Auto-mapped by auto_map() from the library pin data on 2026-10-06. Review every wire against both manuals before building. Open items: - OEM-A 6: Camshaft position B (CMP B): no free cam_hall/cam_vr/frequency_in input on MoTeC M800 Not wired: - OEM-A 1: Knock sensor (KS): no free knock input on MoTeC M800 - OEM-E 10: Ignition switch signal (IG1): key-on 12 V sense — optional in a swap (the main relay is energized from keyed 12 V, not from this pin); MoTeC M800 has no dedicated key-on input - OEM-E 19: Evap vent shut valve (VSV): no free low_side/ls_hs/injector/hbridge on MoTeC M800 - OEM-E 3: Reverse lockout solenoid (RVS, Type-S): no free low_side/ls_hs/injector/hbridge on MoTeC M800 - OEM-E 31: Malfunction indicator lamp (MIL): no free low_side/ls_hs/injector/hbridge on MoTeC M800 - OEM-E 25: Engine speed pulse / tacho (NEP): no free tacho/frequency_out/low_side/ls_hs on MoTeC M800 - OEM-E 26: Vehicle speed output (VSSOUT): no free frequency_out/tacho/low_side/ls_hs on MoTeC M800 - OEM-E 13: Multiplex communication (SEFMJ): no free k_line on MoTeC M800 - OEM-E 23: K-line (diagnostic): no free k_line on MoTeC M800 - OEM-E 27: Immobilizer code (IMOCD): not classified in the library; wire by hand - OEM-E 29: Service check signal (SCS): not classified in the library; wire by hand - OEM-E 30: Write enable signal (WEN): not classified in the library; wire by hand

Sources

ReliabilityKindTitleURLArchiveCapturedSHA-256
4vendor_docMoTeC M400/M600/M800/M880 Manual — Appendix L: Pin list by Functionhttps://starracecars.com/wp-content/uploads/resources/M400_M600_M800_M880_Manual_A5.pdfarchive2026-10-05b69bb8ffb674
4vendor_docMoTeC M800 OEM WRX56 Installationhttps://motec.com.auarchive2026-10-052ca4be92bb65
3forumFFS TechNet: K-series 02-06 RSX ECU pin diagram (Helm)https://ff-squad.com/technet2/k-series-02-06-rsx-ecu-pin-diagram/archive2026-10-05b2b85002666e