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RSX Type-S 2005-06 (K20Z1) → AMP EFI MS3Pro Ultimate (auto)

RSX Type-S 2005-06 (K20Z1) — AMP EFI — MS3Pro Ultimate
Drawn by Michael Gnankou · Rev 0 · proposal · 2026-10-04

Revisions

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Schematic

MS3PROULTIMA-AMS3PROULTIMA-BMS3PROULTIMA-COEM-AOEM-BOEM-ESP-0VSP-14VSP-GND

Connectors

MS3PROULTIMA-A

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1High current out 1—W51—0.5OEM-B-6———
10MAT in—W62—0.5OEM-B-8———
11CLT in—W63—0.5OEM-B-17———
12Analog In 6————————
13Power ground—W9—0.85SP-GND-1———
14PWM / Idle Out 1—W44—0.5OEM-E-12———
15CKP−—W29—0.5SP-0V-1———
16Logic ground—W18—0.5SP-0V-1———
17Analog In 7————————
18Sensor return—W19—0.5SP-0V-1———
19Analog in 1—W59—0.5OEM-A-30———
2High current out 2—W52—0.5OEM-B-1———
20Analog in 2—W64—0.5OEM-B-13———
21Analog in 3—W65—0.5OEM-E-14———
22Analog In 4—W66—0.5OEM-E-15———
23Analog In 5————————
24Tach out—W58—0.5OEM-E-25———
25O2 in—W61—0.5OEM-E-20———
26CMP+—W30—0.5OEM-A-19———
27CMP−—W31—0.5SP-0V-1———
28Fuel pump relay out—W43—0.5OEM-E-8———
29PWM out 2—W46—0.5OEM-E-18———
3Injector out J—W38—0.5OEM-B-5———
30PWM out 3—W48—0.5OEM-E-21———
31Knock in 1—W33—0.5OEM-A-1———
32Digital switched in 1—W67—0.5OEM-A-18———
33CAN L————————
34CAN H————————
3512V+ switched power in—W3—0.85SP-14V-1———
4Injector out I—W39—0.5OEM-B-4———
5High current out 3—W53—0.5OEM-B-18———
6CKP+—W28—0.5OEM-A-7———
7Knock In 2————————
85V+ VREF out 1—W25—0.5OEM-A-20———
9TPS in—W60—0.5OEM-A-29———

MS3PROULTIMA-B

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Injector out A—W40—0.5OEM-B-3———
10Injector out F—W41—0.5OEM-B-2———
11Injector out G—W54—0.5OEM-B-21———
12Injector out H—W55—0.5OEM-E-19———
13Spark out G—W34—0.5OEM-A-16———
14Spark out E—W35—0.5OEM-A-15———
15Spark out C—W36—0.5OEM-A-14———
16Spark out H—W37—0.5OEM-A-13———
17Digital frequency in 2————————
18Ground—W10—0.85SP-GND-1———
19Digital switched 12V in—W42—0.5OEM-E-10———
2Injector out B—W56—0.5OEM-E-3———
20Digital switched in 2—W68—0.5OEM-B-10———
21Digital frequency in 3————————
22Digital Frequency in 3 VR+————————
23Digital Frequency In 3 VR−————————
24Spark out F————————
25Spark out B————————
26Spark out D————————
27Spark out A————————
28Digital frequency in 1—W32—0.5OEM-A-6———
29Digital switched in 3—W69—0.5OEM-B-11———
3Ground—W11—0.85SP-GND-1———
30Stepper IAC out 1B————————
31Stepper IAC out 1A————————
32Stepper IAC out 2A————————
33Stepper IAC out 2B————————
34Digital Frequency in 1 VR+————————
35Digital Frequency in 1 VR−————————
4Injector out C—W57—0.5OEM-E-31———
5Ground—W12—0.85SP-GND-1———
6Injector out D————————
7Ground—W13—0.85SP-GND-1———
8Injector out E————————
9Ground—W14—0.85SP-GND-1———

MS3PROULTIMA-C

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1PWM out 5—W50—0.5OEM-A-12———
10Digital switched in 5—W71—0.5OEM-E-22———
11Digital switched in 4—W70—0.5OEM-E-16———
12Digital I/O 5————————
13Digital I/O 3————————
14Digital I/O 1————————
155V+ VREF out 2—W26—0.5OEM-A-21———
16Fuel only battery 12V+————————
17Sensor return—W20—0.5SP-0V-1———
18Sensor return—W21—0.5SP-0V-1———
19Sensor return—W22—0.5SP-0V-1———
2PWM out 4—W49—0.5OEM-A-10———
20Sensor return—W23—0.5SP-0V-1———
21Sensor return—W24—0.5SP-0V-1———
225V+ VREF out 1—W27—0.5OEM-E-6———
23Keep alive power————————
3Digital out 2—W47—0.5OEM-E-9———
4Digital out 1—W45—0.5OEM-E-17———
5Digital I/O 4————————
6Digital I/O 2————————
7Analog in 8————————
85V+ VREF out 2————————
9Fuel only coil negative————————

OEM-A

Mating face
Wire side
CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Knock sensor (KS)—W33—0.5MS3PROULTIMA-A-31———
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)—W32—0.5MS3PROULTIMA-B-28———
7Crank position sensor (CKP)—W28—0.5MS3PROULTIMA-A-6———
8Logic ground 2 (LG2)—W6—0.85SP-GND-1———
9Logic ground 1 (LG1)—W7—0.85SP-GND-1———
10A/F sensor heater control (AFSHTC)—W49—0.5MS3PROULTIMA-C-2———
11—————————
12Idle air control valve (IACV)—W50—0.5MS3PROULTIMA-C-1———
13Ignition coil 4 (IGPLS4)—W37—0.5MS3PROULTIMA-B-16———
14Ignition coil 3 (IGPLS3)—W36—0.5MS3PROULTIMA-B-15———
15Ignition coil 2 (IGPLS2)—W35—0.5MS3PROULTIMA-B-14———
16Ignition coil 1 (IGPLS1)—W34—0.5MS3PROULTIMA-B-13———
17—————————
18Neutral position switch (NC)—W67—0.5MS3PROULTIMA-A-32———
19Camshaft position A (CMP A)—W30—0.5MS3PROULTIMA-A-26———
20Sensor 5V supply 2 (VCC2)—W25—0.5MS3PROULTIMA-A-8———
21Sensor 5V supply 1 (VCC1)—W26—0.5MS3PROULTIMA-C-15———
22—————————
23Sensor ground 2 (SG2)—W15—0.5SP-0V-1———
24Sensor ground 1 (SG1)—W16—0.5SP-0V-1———
25—————————
26—————————
27—————————
28A/F sensor - (AFS-, wideband Vs)————————
29Throttle position sensor (TPS)—W60—0.5MS3PROULTIMA-A-9———
30Manifold absolute pressure (MAP)—W59—0.5MS3PROULTIMA-A-19———
31A/F sensor + (AFS+, wideband Ip)————————

OEM-B

Mating face
Wire side
CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1VTC oil control solenoid (+)—W52—0.5MS3PROULTIMA-A-2———
2Injector 4 (INJ4)—W41—0.5MS3PROULTIMA-B-10———
3Injector 3 (INJ3)—W40—0.5MS3PROULTIMA-B-1———
4Injector 2 (INJ2)—W39—0.5MS3PROULTIMA-A-4———
5Injector 1 (INJ1)—W38—0.5MS3PROULTIMA-A-3———
6VTEC solenoid (VTS)—W51—0.5MS3PROULTIMA-A-1———
7—————————
8Coolant temp sensor (ECT)—W62—0.5MS3PROULTIMA-A-10———
9—————————
10Alternator L signal (ALTL)—W68—0.5MS3PROULTIMA-B-20———
11VTEC oil pressure switch (VTPSW)—W69—0.5MS3PROULTIMA-B-29———
12—————————
13Alternator FR signal (ALTF)—W64—0.5MS3PROULTIMA-A-20———
14—————————
15—————————
16—————————
17Intake air temp sensor (IAT)—W63—0.5MS3PROULTIMA-A-11———
18Alternator control (ALTC)—W53—0.5MS3PROULTIMA-A-5———
19—————————
20—————————
21Evap canister purge valve (PCS)—W54—0.5MS3PROULTIMA-B-11———
22—————————
23—————————
24—————————

OEM-E

Mating face
Wire side
CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1—————————
2—————————
3Reverse lockout solenoid (RVS, Type-S)—W56—0.5MS3PROULTIMA-B-2———
4Logic ground 3 (LG3)—W8—0.85SP-GND-1———
5Sensor ground 3 (SG3)—W17—0.5SP-0V-1———
6Sensor 5V supply 3 (VCC3)—W27—0.5MS3PROULTIMA-C-22———
7—————————
8Main relay control (MRLY)—W43—0.5MS3PROULTIMA-A-28———
9A/F sensor heater relay control (AFSHTCR)—W47—0.5MS3PROULTIMA-C-3———
10Ignition switch signal (IG1)—W42—0.5MS3PROULTIMA-B-19———
11—————————
12Radiator fan control (FANC)—W44—0.5MS3PROULTIMA-A-14———
13Multiplex communication (SEFMJ)————————
14Fuel tank pressure sensor (FTP)—W65—0.5MS3PROULTIMA-A-21———
15Electrical load detector (ELD)—W66—0.5MS3PROULTIMA-A-22———
16Power steering pressure switch (PSPSW)—W70—0.5MS3PROULTIMA-C-11———
17Immobilizer fuel pump relay (IMO FPR)—W45—0.5MS3PROULTIMA-C-4———
18A/C clutch relay (ACC)—W46—0.5MS3PROULTIMA-A-29———
19Evap vent shut valve (VSV)—W55—0.5MS3PROULTIMA-B-12———
20Secondary heated O2 sensor (SHO2S)—W61—0.5MS3PROULTIMA-A-25———
21Secondary O2 heater control (SO2SHTC)—W48—0.5MS3PROULTIMA-A-30———
22Brake switch (BKSW)—W71—0.5MS3PROULTIMA-C-10———
23K-line (diagnostic)————————
24—————————
25Engine speed pulse / tacho (NEP)—W58—0.5MS3PROULTIMA-A-24———
26Vehicle speed output (VSSOUT)————————
27Immobilizer code (IMOCD)————————
28—————————
29Service check signal (SCS)————————
30Write enable signal (WEN)————————
31Malfunction indicator lamp (MIL)—W57—0.5MS3PROULTIMA-B-4———

SP-0V

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1——W22—0.5MS3PROULTIMA-C-19———
1——W15—0.5OEM-A-23———
1——W16—0.5OEM-A-24———
1——W17—0.5OEM-E-5———
1——W18—0.5MS3PROULTIMA-A-16———
1——W19—0.5MS3PROULTIMA-A-18———
1——W20—0.5MS3PROULTIMA-C-17———
1——W21—0.5MS3PROULTIMA-C-18———
1——W23—0.5MS3PROULTIMA-C-20———
1——W24—0.5MS3PROULTIMA-C-21———
1——W29—0.5MS3PROULTIMA-A-15———
1——W31—0.5MS3PROULTIMA-A-27———

SP-14V

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1——W1—0.85OEM-A-2———
1——W2—0.85OEM-A-3———
1——W3—0.85MS3PROULTIMA-A-35———

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—0.85MS3PROULTIMA-A-13———
1——W10—0.85MS3PROULTIMA-B-18———
1——W11—0.85MS3PROULTIMA-B-3———
1——W12—0.85MS3PROULTIMA-B-5———
1——W13—0.85MS3PROULTIMA-B-7———
1——W14—0.85MS3PROULTIMA-B-9———

Pin map

OEM pointOEM functionOEM familyTarget pointTarget functionTarget familyWire colourEvidence
OEM-A-1Knock sensor (KS)knock_inMS3PROULTIMA-A-31Knock in 1knock_insingle_source
OEM-A-10A/F sensor heater control (AFSHTC)low_side_outMS3PROULTIMA-C-2PWM out 4low_side_outsingle_source
OEM-A-12Idle air control valve (IACV)low_side_outMS3PROULTIMA-C-1PWM out 5low_side_outsingle_source
OEM-A-13Ignition coil 4 (IGPLS4)ignition_outMS3PROULTIMA-B-16Spark out Hignition_outsingle_source
OEM-A-14Ignition coil 3 (IGPLS3)ignition_outMS3PROULTIMA-B-15Spark out Cignition_outsingle_source
OEM-A-15Ignition coil 2 (IGPLS2)ignition_outMS3PROULTIMA-B-14Spark out Eignition_outsingle_source
OEM-A-16Ignition coil 1 (IGPLS1)ignition_outMS3PROULTIMA-B-13Spark out Gignition_outsingle_source
OEM-A-18Neutral position switch (NC)digital_inMS3PROULTIMA-A-32Digital switched in 1digital_insingle_source
OEM-A-19Camshaft position A (CMP A)trigger_inMS3PROULTIMA-A-26CMP+trigger_insingle_source
OEM-A-2Ignition power 2 (IGP2)power_inMS3PROULTIMA-A-3512V+ switched power inpower_insingle_source
OEM-A-20Sensor 5V supply 2 (VCC2)vrefMS3PROULTIMA-A-85V+ VREF out 1vrefsingle_source
OEM-A-21Sensor 5V supply 1 (VCC1)vrefMS3PROULTIMA-C-155V+ VREF out 2vrefsingle_source
OEM-A-23Sensor ground 2 (SG2)sensor_groundMS3PROULTIMA-A-15 + MS3PROULTIMA-A-16 + MS3PROULTIMA-A-18 + MS3PROULTIMA-A-27 + MS3PROULTIMA-C-17 + MS3PROULTIMA-C-18 + MS3PROULTIMA-C-19 + MS3PROULTIMA-C-20 + MS3PROULTIMA-C-21CKP− + Logic ground + Sensor return + CMP− + Sensor return + Sensor return + Sensor return + Sensor return + Sensor returnsensor_ground + trigger_insingle_source
OEM-A-24Sensor ground 1 (SG1)sensor_groundMS3PROULTIMA-A-15 + MS3PROULTIMA-A-16 + MS3PROULTIMA-A-18 + MS3PROULTIMA-A-27 + MS3PROULTIMA-C-17 + MS3PROULTIMA-C-18 + MS3PROULTIMA-C-19 + MS3PROULTIMA-C-20 + MS3PROULTIMA-C-21CKP− + Logic ground + Sensor return + CMP− + Sensor return + Sensor return + Sensor return + Sensor return + Sensor returnsensor_ground + trigger_insingle_source
OEM-A-28A/F sensor - (AFS-, wideband Vs)wb_vs———single_source
OEM-A-29Throttle position sensor (TPS)analog_inMS3PROULTIMA-A-9TPS inanalog_insingle_source
OEM-A-3Ignition power 1 (IGP1)power_inMS3PROULTIMA-A-3512V+ switched power inpower_insingle_source
OEM-A-30Manifold absolute pressure (MAP)analog_inMS3PROULTIMA-A-19Analog in 1analog_insingle_source
OEM-A-31A/F sensor + (AFS+, wideband Ip)wb_ip———single_source
OEM-A-4Power ground 2 (PG2)groundMS3PROULTIMA-A-13 + MS3PROULTIMA-B-18 + MS3PROULTIMA-B-3 + MS3PROULTIMA-B-5 + MS3PROULTIMA-B-7 + MS3PROULTIMA-B-9Power ground + Ground + Ground + Ground + Ground + Groundgroundsingle_source
OEM-A-5Power ground 1 (PG1)groundMS3PROULTIMA-A-13 + MS3PROULTIMA-B-18 + MS3PROULTIMA-B-3 + MS3PROULTIMA-B-5 + MS3PROULTIMA-B-7 + MS3PROULTIMA-B-9Power ground + Ground + Ground + Ground + Ground + Groundgroundsingle_source
OEM-A-6Camshaft position B (CMP B)trigger_inMS3PROULTIMA-B-28Digital frequency in 1digital_insingle_source
OEM-A-7Crank position sensor (CKP)trigger_inMS3PROULTIMA-A-6CKP+trigger_insingle_source
OEM-A-8Logic ground 2 (LG2)groundMS3PROULTIMA-A-13 + MS3PROULTIMA-B-18 + MS3PROULTIMA-B-3 + MS3PROULTIMA-B-5 + MS3PROULTIMA-B-7 + MS3PROULTIMA-B-9Power ground + Ground + Ground + Ground + Ground + Groundgroundsingle_source
OEM-A-9Logic ground 1 (LG1)groundMS3PROULTIMA-A-13 + MS3PROULTIMA-B-18 + MS3PROULTIMA-B-3 + MS3PROULTIMA-B-5 + MS3PROULTIMA-B-7 + MS3PROULTIMA-B-9Power ground + Ground + Ground + Ground + Ground + Groundgroundsingle_source
OEM-B-1VTC oil control solenoid (+)low_side_outMS3PROULTIMA-A-2High current out 2low_side_outsingle_source
OEM-B-10Alternator L signal (ALTL)digital_inMS3PROULTIMA-B-20Digital switched in 2digital_insingle_source
OEM-B-11VTEC oil pressure switch (VTPSW)digital_inMS3PROULTIMA-B-29Digital switched in 3digital_insingle_source
OEM-B-13Alternator FR signal (ALTF)analog_inMS3PROULTIMA-A-20Analog in 2analog_insingle_source
OEM-B-17Intake air temp sensor (IAT)temp_inMS3PROULTIMA-A-11CLT intemp_insingle_source
OEM-B-18Alternator control (ALTC)low_side_outMS3PROULTIMA-A-5High current out 3low_side_outsingle_source
OEM-B-2Injector 4 (INJ4)injector_outMS3PROULTIMA-B-10Injector out Finjector_outsingle_source
OEM-B-21Evap canister purge valve (PCS)low_side_outMS3PROULTIMA-B-11Injector out Ginjector_outsingle_source
OEM-B-3Injector 3 (INJ3)injector_outMS3PROULTIMA-B-1Injector out Ainjector_outsingle_source
OEM-B-4Injector 2 (INJ2)injector_outMS3PROULTIMA-A-4Injector out Iinjector_outsingle_source
OEM-B-5Injector 1 (INJ1)injector_outMS3PROULTIMA-A-3Injector out Jinjector_outsingle_source
OEM-B-6VTEC solenoid (VTS)low_side_outMS3PROULTIMA-A-1High current out 1low_side_outsingle_source
OEM-B-8Coolant temp sensor (ECT)temp_inMS3PROULTIMA-A-10MAT intemp_insingle_source
OEM-E-10Ignition switch signal (IG1)digital_inMS3PROULTIMA-B-19Digital switched 12V indigital_insingle_source
OEM-E-12Radiator fan control (FANC)low_side_outMS3PROULTIMA-A-14PWM / Idle Out 1low_side_outsingle_source
OEM-E-13Multiplex communication (SEFMJ)serial———single_source
OEM-E-14Fuel tank pressure sensor (FTP)analog_inMS3PROULTIMA-A-21Analog in 3analog_insingle_source
OEM-E-15Electrical load detector (ELD)analog_inMS3PROULTIMA-A-22Analog In 4analog_insingle_source
OEM-E-16Power steering pressure switch (PSPSW)digital_inMS3PROULTIMA-C-11Digital switched in 4digital_insingle_source
OEM-E-17Immobilizer fuel pump relay (IMO FPR)low_side_outMS3PROULTIMA-C-4Digital out 1low_side_outsingle_source
OEM-E-18A/C clutch relay (ACC)low_side_outMS3PROULTIMA-A-29PWM out 2low_side_outsingle_source
OEM-E-19Evap vent shut valve (VSV)low_side_outMS3PROULTIMA-B-12Injector out Hinjector_outsingle_source
OEM-E-20Secondary heated O2 sensor (SHO2S)lambda_nb_inMS3PROULTIMA-A-25O2 inlambda_nb_insingle_source
OEM-E-21Secondary O2 heater control (SO2SHTC)low_side_outMS3PROULTIMA-A-30PWM out 3low_side_outsingle_source
OEM-E-22Brake switch (BKSW)digital_inMS3PROULTIMA-C-10Digital switched in 5digital_insingle_source
OEM-E-23K-line (diagnostic)serial———single_source
OEM-E-25Engine speed pulse / tacho (NEP)tacho_outMS3PROULTIMA-A-24Tach outtacho_outsingle_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_outMS3PROULTIMA-B-2Injector out Binjector_outsingle_source
OEM-E-30Write enable signal (WEN)————single_source
OEM-E-31Malfunction indicator lamp (MIL)low_side_outMS3PROULTIMA-B-4Injector out Cinjector_outsingle_source
OEM-E-4Logic ground 3 (LG3)groundMS3PROULTIMA-A-13 + MS3PROULTIMA-B-18 + MS3PROULTIMA-B-3 + MS3PROULTIMA-B-5 + MS3PROULTIMA-B-7 + MS3PROULTIMA-B-9Power ground + Ground + Ground + Ground + Ground + Groundgroundsingle_source
OEM-E-5Sensor ground 3 (SG3)sensor_groundMS3PROULTIMA-A-15 + MS3PROULTIMA-A-16 + MS3PROULTIMA-A-18 + MS3PROULTIMA-A-27 + MS3PROULTIMA-C-17 + MS3PROULTIMA-C-18 + MS3PROULTIMA-C-19 + MS3PROULTIMA-C-20 + MS3PROULTIMA-C-21CKP− + Logic ground + Sensor return + CMP− + Sensor return + Sensor return + Sensor return + Sensor return + Sensor returnsensor_ground + trigger_insingle_source
OEM-E-6Sensor 5V supply 3 (VCC3)vrefMS3PROULTIMA-C-225V+ VREF out 1vrefsingle_source
OEM-E-8Main relay control (MRLY)low_side_outMS3PROULTIMA-A-28Fuel pump relay outlow_side_outsingle_source
OEM-E-9A/F sensor heater relay control (AFSHTCR)low_side_outMS3PROULTIMA-C-3Digital out 2low_side_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-1MS3PROULTIMA-A-350.85no route12V+ switched power in—
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-1MS3PROULTIMA-A-130.85no routePower ground—
W10SP-GND-1MS3PROULTIMA-B-180.85no routeGround—
W11SP-GND-1MS3PROULTIMA-B-30.85no routeGround—
W12SP-GND-1MS3PROULTIMA-B-50.85no routeGround—
W13SP-GND-1MS3PROULTIMA-B-70.85no routeGround—
W14SP-GND-1MS3PROULTIMA-B-90.85no routeGround—
W15OEM-A-23SP-0V-10.5no routeSensor ground 2 (SG2)—
W16OEM-A-24SP-0V-10.5no routeSensor ground 1 (SG1)—
W17OEM-E-5SP-0V-10.5no routeSensor ground 3 (SG3)—
W18SP-0V-1MS3PROULTIMA-A-160.5no routeLogic ground—
W19SP-0V-1MS3PROULTIMA-A-180.5no routeSensor return—
W20SP-0V-1MS3PROULTIMA-C-170.5no routeSensor return—
W21SP-0V-1MS3PROULTIMA-C-180.5no routeSensor return—
W22SP-0V-1MS3PROULTIMA-C-190.5no routeSensor return—
W23SP-0V-1MS3PROULTIMA-C-200.5no routeSensor return—
W24SP-0V-1MS3PROULTIMA-C-210.5no routeSensor return—
W25OEM-A-20MS3PROULTIMA-A-80.5no routeSensor 5V supply 2 (VCC2)—
W26OEM-A-21MS3PROULTIMA-C-150.5no routeSensor 5V supply 1 (VCC1)—
W27OEM-E-6MS3PROULTIMA-C-220.5no routeSensor 5V supply 3 (VCC3)—
W28OEM-A-7MS3PROULTIMA-A-60.5no routeCrank position sensor (CKP)—
W29SP-0V-1MS3PROULTIMA-A-150.5no routeCKP−—
W30OEM-A-19MS3PROULTIMA-A-260.5no routeCamshaft position A (CMP A)—
W31SP-0V-1MS3PROULTIMA-A-270.5no routeCMP−—
W32OEM-A-6MS3PROULTIMA-B-280.5no routeCamshaft position B (CMP B)—
W33OEM-A-1MS3PROULTIMA-A-310.5no routeKnock sensor (KS)—
W34OEM-A-16MS3PROULTIMA-B-130.5no routeIgnition coil 1 (IGPLS1)—
W35OEM-A-15MS3PROULTIMA-B-140.5no routeIgnition coil 2 (IGPLS2)—
W36OEM-A-14MS3PROULTIMA-B-150.5no routeIgnition coil 3 (IGPLS3)—
W37OEM-A-13MS3PROULTIMA-B-160.5no routeIgnition coil 4 (IGPLS4)—
W38OEM-B-5MS3PROULTIMA-A-30.5no routeInjector 1 (INJ1)—
W39OEM-B-4MS3PROULTIMA-A-40.5no routeInjector 2 (INJ2)—
W40OEM-B-3MS3PROULTIMA-B-10.5no routeInjector 3 (INJ3)—
W41OEM-B-2MS3PROULTIMA-B-100.5no routeInjector 4 (INJ4)—
W42OEM-E-10MS3PROULTIMA-B-190.5no routeIgnition switch signal (IG1)—
W43OEM-E-8MS3PROULTIMA-A-280.5no routeMain relay control (MRLY)—
W44OEM-E-12MS3PROULTIMA-A-140.5no routeRadiator fan control (FANC)—
W45OEM-E-17MS3PROULTIMA-C-40.5no routeImmobilizer fuel pump relay (IMO FPR)—
W46OEM-E-18MS3PROULTIMA-A-290.5no routeA/C clutch relay (ACC)—
W47OEM-E-9MS3PROULTIMA-C-30.5no routeA/F sensor heater relay control (AFSHTCR)—
W48OEM-E-21MS3PROULTIMA-A-300.5no routeSecondary O2 heater control (SO2SHTC)—
W49OEM-A-10MS3PROULTIMA-C-20.5no routeA/F sensor heater control (AFSHTC)—
W50OEM-A-12MS3PROULTIMA-C-10.5no routeIdle air control valve (IACV)—
W51OEM-B-6MS3PROULTIMA-A-10.5no routeVTEC solenoid (VTS)—
W52OEM-B-1MS3PROULTIMA-A-20.5no routeVTC oil control solenoid (+)—
W53OEM-B-18MS3PROULTIMA-A-50.5no routeAlternator control (ALTC)—
W54OEM-B-21MS3PROULTIMA-B-110.5no routeEvap canister purge valve (PCS)—
W55OEM-E-19MS3PROULTIMA-B-120.5no routeEvap vent shut valve (VSV)—
W56OEM-E-3MS3PROULTIMA-B-20.5no routeReverse lockout solenoid (RVS, Type-S)—
W57OEM-E-31MS3PROULTIMA-B-40.5no routeMalfunction indicator lamp (MIL)—
W58OEM-E-25MS3PROULTIMA-A-240.5no routeEngine speed pulse / tacho (NEP)—
W59OEM-A-30MS3PROULTIMA-A-190.5no routeManifold absolute pressure (MAP)—
W60OEM-A-29MS3PROULTIMA-A-90.5no routeThrottle position sensor (TPS)—
W61OEM-E-20MS3PROULTIMA-A-250.5no routeSecondary heated O2 sensor (SHO2S)—
W62OEM-B-8MS3PROULTIMA-A-100.5no routeCoolant temp sensor (ECT)—
W63OEM-B-17MS3PROULTIMA-A-110.5no routeIntake air temp sensor (IAT)—
W64OEM-B-13MS3PROULTIMA-A-200.5no routeAlternator FR signal (ALTF)—
W65OEM-E-14MS3PROULTIMA-A-210.5no routeFuel tank pressure sensor (FTP)—
W66OEM-E-15MS3PROULTIMA-A-220.5no routeElectrical load detector (ELD)—
W67OEM-A-18MS3PROULTIMA-A-320.5no routeNeutral position switch (NC)—
W68OEM-B-10MS3PROULTIMA-B-200.5no routeAlternator L signal (ALTL)—
W69OEM-B-11MS3PROULTIMA-B-290.5no routeVTEC oil pressure switch (VTPSW)—
W70OEM-E-16MS3PROULTIMA-C-110.5no routePower steering pressure switch (PSPSW)—
W71OEM-E-22MS3PROULTIMA-C-100.5no routeBrake switch (BKSW)—

Bill of materials

CategoryPart numberManufacturerDescriptionQtyUnit
connector1318682-6TEK-series ECU harness plug A (040-3 HD plug assy, 31P)1.000ea
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

ECU setup sheet

RoleEngine refEngine signalSensorECU pointECU functionECU classSetup flag
No configured channels.

Findings

Open (10)

SeverityCodeSubjectMessage
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.
warnNET_FAMILYOEM-A-6 ↔ MS3PROULTIMA-B-28OEM-A-6 "Camshaft position B (CMP B)" [trigger_in] is wired to MS3PROULTIMA-B-28 "Digital frequency in 1" [digital_in]. Hall-type cam/speed signals can use a digital input if it handles the frequency; VR signals cannot.
infoNET_FAMILYMS3PROULTIMA-A-15 ↔ MS3PROULTIMA-A-18MS3PROULTIMA-A-15 "CKP−" [trigger_in] is wired to MS3PROULTIMA-A-18 "Sensor return" [sensor_ground]. Trigger return tied to sensor/trigger ground: correct for single-ended trigger inputs.
infoNET_FAMILYOEM-B-21 ↔ MS3PROULTIMA-B-11OEM-B-21 "Evap canister purge valve (PCS)" [low_side_out] is wired to MS3PROULTIMA-B-11 "Injector out G" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency.
infoNET_FAMILYOEM-E-19 ↔ MS3PROULTIMA-B-12OEM-E-19 "Evap vent shut valve (VSV)" [low_side_out] is wired to MS3PROULTIMA-B-12 "Injector out H" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency.
infoNET_FAMILYOEM-E-31 ↔ MS3PROULTIMA-B-4OEM-E-31 "Malfunction indicator lamp (MIL)" [low_side_out] is wired to MS3PROULTIMA-B-4 "Injector out C" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency.
infoNET_FAMILYOEM-E-3 ↔ MS3PROULTIMA-B-2OEM-E-3 "Reverse lockout solenoid (RVS, Type-S)" [low_side_out] is wired to MS3PROULTIMA-B-2 "Injector out B" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency.
infoUNMAPPEDOEM8 optional OEM pins are not mapped: OEM-A-28 A/F sensor - (AFS-, wideband Vs); OEM-A-31 A/F sensor + (AFS+, wideband Ip); OEM-E-13 Multiplex communication (SEFMJ); OEM-E-23 K-line (diagnostic); OEM-E-26 Vehicle speed output (VSSOUT); OEM-E-27 Immobilizer code (IMOCD); OEM-E-29 Service check signal (SCS); OEM-E-30 Write enable signal (WEN)

Accepted (0)

CodeSubjectReasonBy

Notes

Auto-mapped by auto_map() from the library pin data on 2026-10-04. Review every wire against both manuals before building. Not wired: - OEM-E 26: Vehicle speed output (VSSOUT): no free frequency_out/tacho/low_side/ls_hs on AMP EFI MS3Pro Ultimate - OEM-A 31: A/F sensor + (AFS+, wideband Ip): no free wb_ip on AMP EFI MS3Pro Ultimate - OEM-A 28: A/F sensor - (AFS-, wideband Vs): no free wb_vs on AMP EFI MS3Pro Ultimate - OEM-E 13: Multiplex communication (SEFMJ): no free k_line on AMP EFI MS3Pro Ultimate - OEM-E 23: K-line (diagnostic): no free k_line on AMP EFI MS3Pro Ultimate - 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

ReliabilityKindTitleURL
4vendor_docAMP EFI: MS3Pro Ultimate manual (v1.210, fw 1.5.2) pinout tableshttps://cdn.shopify.com/s/files/1/0960/0014/7754/files/MS3Pro_User_Manual_Firmware_1.5.2_ULTIMATE.pdf?v=1760706068
3forumFFS TechNet: K-series 02-06 RSX ECU pin diagram (Helm)https://ff-squad.com/technet2/k-series-02-06-rsx-ecu-pin-diagram/