← Back

Toyota Mark II JZX90 1992-96 (1JZ-GTE, non-VVT) → Haltech Elite 2500 HT-151300 (auto)

Toyota Mark II JZX90 1992-96 (1JZ-GTE, non-VVT) — Haltech — Elite 2500
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 job62 wires · 9 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-C86-22SP-14V-10.85☐☐☐☐☐☐☐
W2OEM-C86-23SP-14V-10.85☐☐☐☐☐☐☐
W3SP-14V-1ELITE2500-A-260.85☐☐☐☐☐☐☐
W4SP-14V-1ELITE2500-B-110.85☐☐☐☐☐☐☐
W5OEM-C85-16SP-GND-10.85☐☐☐☐☐☐☐
W6OEM-C88-28SP-GND-10.85☐☐☐☐☐☐☐
W7OEM-C88-33SP-GND-10.85☐☐☐☐☐☐☐
W8OEM-C88-34SP-GND-10.85☐☐☐☐☐☐☐
W9SP-GND-1ELITE2500-A-100.85☐☐☐☐☐☐☐
W10SP-GND-1ELITE2500-A-110.85☐☐☐☐☐☐☐
W11OEM-C84-11SP-0V-10.5☐☐☐☐☐☐☐
W12OEM-C84-17SP-0V-10.5☐☐☐☐☐☐☐
W13OEM-C84-22SP-0V-10.5☐☐☐☐☐☐☐
W14OEM-C84-6SP-0V-10.5☐☐☐☐☐☐☐
W15SP-0V-1ELITE2500-B-140.5☐☐☐☐☐☐☐
W16SP-0V-1ELITE2500-B-150.5☐☐☐☐☐☐☐
W17SP-0V-1ELITE2500-B-160.5☐☐☐☐☐☐☐
W18OEM-C84-1ELITE2500-A-90.5☐☐☐☐☐☐☐
W19OEM-C84-5ELITE2500-B-10.5☐☐☐☐☐☐☐
W20SP-0V-1ELITE2500-B-50.5☐☐☐☐☐☐☐
W21OEM-C84-10ELITE2500-B-20.5☐☐☐☐☐☐☐
W22SP-0V-1ELITE2500-B-60.5☐☐☐☐☐☐☐
W23OEM-C84-16ELITE2500-B-80.5☐☐☐☐☐☐☐
W24OEM-C88-5ELITE2500-B-210.5☐☐☐☐☐☐☐
W25OEM-C88-4ELITE2500-B-220.5☐☐☐☐☐☐☐
W26OEM-C88-24ELITE2500-A-30.5☐☐☐☐☐☐☐
W27OEM-C88-16ELITE2500-A-40.5☐☐☐☐☐☐☐
W28OEM-C88-15ELITE2500-A-50.5☐☐☐☐☐☐☐
W29OEM-C88-26ELITE2500-A-60.5☐☐☐☐☐☐☐
W30OEM-C88-30ELITE2500-A-70.5☐☐☐☐☐☐☐
W31OEM-C88-29ELITE2500-A-80.5☐☐☐☐☐☐☐
W32OEM-C88-10ELITE2500-A-190.5☐☐☐☐☐☐☐
W33OEM-C88-9ELITE2500-A-200.5☐☐☐☐☐☐☐
W34OEM-C88-8ELITE2500-A-210.5☐☐☐☐☐☐☐
W35OEM-C86-9ELITE2500-A-130.5☐☐☐☐☐☐☐
W36OEM-C84-8ELITE2500-B-130.5☐☐☐☐☐☐☐
W37OEM-C84-7ELITE2500-A-160.5☐☐☐☐☐☐☐
W38OEM-C84-20ELITE2500-B-40.5☐☐☐☐☐☐☐
W39OEM-C85-2ELITE2500-A-250.5☐☐☐☐☐☐☐
W40OEM-C86-5ELITE2500-A-180.5☐☐☐☐☐☐☐
W41OEM-C88-3ELITE2500-A-10.5☐☐☐☐☐☐☐
W42OEM-C88-11ELITE2500-A-230.5☐☐☐☐☐☐☐
W43OEM-C88-23ELITE2500-B-190.5☐☐☐☐☐☐☐
W44OEM-C88-17ELITE2500-A-240.5☐☐☐☐☐☐☐
W45OEM-C88-22ELITE2500-A-310.5☐☐☐☐☐☐☐
W46OEM-C88-21ELITE2500-A-320.5☐☐☐☐☐☐☐
W47OEM-C88-20ELITE2500-A-330.5☐☐☐☐☐☐☐
W48OEM-C85-3ELITE2500-A-340.5☐☐☐☐☐☐☐
W49OEM-C85-4ELITE2500-A-220.5☐☐☐☐☐☐☐
W50OEM-C86-8ELITE2500-A-270.5☐☐☐☐☐☐☐
W51OEM-C88-27ELITE2500-A-280.5☐☐☐☐☐☐☐
W52OEM-C88-7ELITE2500-A-290.5☐☐☐☐☐☐☐
W53OEM-C84-12ELITE2500-A-170.5☐☐☐☐☐☐☐
W54OEM-C84-13ELITE2500-A-20.5☐☐☐☐☐☐☐
W55OEM-C84-14ELITE2500-B-30.5☐☐☐☐☐☐☐
W56OEM-C86-13ELITE2500-B-200.5☐☐☐☐☐☐☐
W57OEM-C86-12ELITE2500-B-90.5☐☐☐☐☐☐☐
W58OEM-C84-4ELITE2500-B-100.5☐☐☐☐☐☐☐
W59OEM-C84-9ELITE2500-B-70.5☐☐☐☐☐☐☐
W60OEM-C85-5ELITE2500-B-120.5☐☐☐☐☐☐☐
W61OEM-C86-7ELITE2500-A-150.5☐☐☐☐☐☐☐
W62OEM-C86-10ELITE2500-A-140.5☐☐☐☐☐☐☐

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
1ELITE2500-A-9ELITE2500-B-14open (OL)5 V sensor reference must not touch sensor ground
2ELITE2500-A-10ELITE2500-A-26open (OL)power ground must not touch +12 V supply
3ELITE2500-A-10ELITE2500-A-9open (OL)power ground must not touch 5 V sensor reference
4ELITE2500-A-9ELITE2500-A-26open (OL)5 V sensor reference must not touch +12 V supply
5ELITE2500-B-14ELITE2500-A-26open (OL)sensor 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

ELITE2500-AELITE2500-BOEM-C84OEM-C85OEM-C86OEM-C88SP-0VSP-14VSP-GND

Connectors

ELITE2500-A

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1DPO 2—W41—0.5OEM-C88-3———
10Battery ground—W9—0.85SP-GND-1———
11Battery ground—W10—0.85SP-GND-1———
12+8V DC————————
1312V ignition input—W35—0.5OEM-C86-9———
14AVI 10 (TPS)—W62—0.5OEM-C86-10———
15AVI 9 (MAP)—W61—0.5OEM-C86-7———
16AVI 2—W37—0.5OEM-C84-7———
17AVI 3—W53—0.5OEM-C84-12———
18DPO 1—W40—0.5OEM-C86-5———
19INJ 1—W32—0.5OEM-C88-10———
2AVI 4—W54—0.5OEM-C84-13———
20INJ 2—W33—0.5OEM-C88-9———
21INJ 3—W34—0.5OEM-C88-8———
22INJ 4—W49—0.5OEM-C85-4———
23DPO 3—W42—0.5OEM-C88-11———
24DPO 5 (fuel pump trigger)—W44—0.5OEM-C88-17———
25DPO 6 (ECR OUT)—W39—0.5OEM-C85-2———
26ECU injector power input—W3—0.85SP-14V-1———
27INJ 5—W50—0.5OEM-C86-8———
28INJ 6—W51—0.5OEM-C88-27———
29INJ 7—W52—0.5OEM-C88-7———
3IGN 1—W26—0.5OEM-C88-24———
30INJ 8————————
31Stepper 1 P1 / DPO—W45—0.5OEM-C88-22———
32Stepper 1 P2 / DPO—W46—0.5OEM-C88-21———
33Stepper 1 P3 / DPO—W47—0.5OEM-C88-20———
34Stepper 1 P4 / DPO—W48—0.5OEM-C85-3———
4IGN 2—W27—0.5OEM-C88-16———
5IGN 3—W28—0.5OEM-C88-15———
6IGN 4—W29—0.5OEM-C88-26———
7IGN 5—W30—0.5OEM-C88-30———
8IGN 6—W31—0.5OEM-C88-29———
9+5V DC—W18—0.5OEM-C84-1———

ELITE2500-B

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Crank (Trigger) (+)—W19—0.5OEM-C84-5———
10SPI 3—W58—0.5OEM-C84-4———
11+13.8V ECU supply—W4—0.85SP-14V-1———
12AVI 6 (O2 Input 1)—W60—0.5OEM-C85-5———
13AVI 1 (O2 Input 2)—W36—0.5OEM-C84-8———
14Signal ground—W15—0.5SP-0V-1———
15Signal ground—W16—0.5SP-0V-1———
16Signal ground—W17—0.5SP-0V-1———
17IGN 7————————
18IGN 8————————
19DPO 4—W43—0.5OEM-C88-23———
2Cam (Home) (+)—W21—0.5OEM-C84-10———
20AVI 5—W56—0.5OEM-C86-13———
21KNOCK 1—W24—0.5OEM-C88-5———
22KNOCK 2—W25—0.5OEM-C88-4———
23CAN H————————
24CAN L————————
25DBW 1 / DPO————————
26DBW 2 / DPO————————
3AVI 7 (Air Temp)—W55—0.5OEM-C84-14———
4AVI 8 (Coolant Temp)—W38—0.5OEM-C84-20———
5Crank (Trigger) (−)—W20—0.5SP-0V-1———
6Cam (Home) (−)—W22—0.5SP-0V-1———
7SPI 4—W59—0.5OEM-C84-9———
8SPI 1—W23—0.5OEM-C84-16———
9SPI 2—W57—0.5OEM-C86-12———

OEM-C84

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Sensor supply +5V (VCC)—W18—0.5ELITE2500-A-9———
10Cam position 1 (G1)—W21—0.5ELITE2500-B-2———
11Cam 1 return (G1-)—W11—0.5SP-0V-1———
12TRAC throttle position (VTA2)—W53—0.5ELITE2500-A-17———
13O2 sensor (OX1)—W54—0.5ELITE2500-A-2———
14Intake air temperature (THA)—W55—0.5ELITE2500-B-3———
15OD direct-clutch speed sensor (NCO+)————————
16Cam position 2 (G2)—W23—0.5ELITE2500-B-8———
17Cam 2 return (G2-)—W12—0.5SP-0V-1———
20Coolant temperature (THW)—W38—0.5ELITE2500-B-4———
22Sensor ground (E2)—W13—0.5SP-0V-1———
3OD direct-clutch speed sensor (NCO-)————————
4No.2 speed sensor (SP2-)—W58—0.5ELITE2500-B-10———
5Crank position (NE)—W19—0.5ELITE2500-B-1———
6Crank sensor return (NE-)—W14—0.5SP-0V-1———
7Throttle position (VTA1)—W37—0.5ELITE2500-A-16———
8Manifold pressure (PIM)—W36—0.5ELITE2500-B-13———
9No.2 speed sensor (SP2+)—W59—0.5ELITE2500-B-7———

OEM-C85

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Slave engine speed (NEO)————————
10Fuel pump diagnostic (DI)————————
11Slave TRAC throttle position (VTO2)————————
14ABS active (MT only)————————
16Power ground (E1)—W5—0.85SP-GND-1———
2EFI main relay control (M-REL)—W39—0.5ELITE2500-A-25———
3Check-engine lamp (W)—W48—0.5ELITE2500-A-34———
4Fuel pump control (FPC)—W49—0.5ELITE2500-A-22———
5Diagnostic test 1 (TE1)—W60—0.5ELITE2500-B-12———
6Timing retard (TR)————————
7Slave throttle position (VTO1)————————

OEM-C86

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Diagnostic test terminal (TT)————————
10A/T 2nd-gear indicator (2)—W62—0.5ELITE2500-A-14———
11Diagnostic test 2 (TE2)————————
12No.1 speed sensor (SP1)—W57—0.5ELITE2500-B-9———
13Cat temperature sensor (CCO)—W56—0.5ELITE2500-B-20———
14Battery constant (BATT)————————
17A/T throttle position (L3)————————
18A/T throttle position (L2)————————
19A/T throttle position (L1)————————
2A/T low-gear indicator (L)————————
20A/C request (A/C)————————
22EFI main relay power (+B)—W1—0.85SP-14V-1———
23EFI main relay power (+B1)—W2—0.85SP-14V-1———
25Stop light switch (STP)————————
28Electrical load sense (ELS)————————
3A/T power/normal mode (P)————————
5A/C clutch relay (ACMG)—W40—0.5ELITE2500-A-18———
6A/T overdrive disable 2 (OD2)————————
7A/T overdrive disable 1 (OD1)—W61—0.5ELITE2500-A-15———
8Cat temp warning light (EGW)—W50—0.5ELITE2500-A-27———
9Ignition switch (IGSW)—W35—0.5ELITE2500-A-13———

OEM-C88

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
10Injector 1 (#10, cyl 1&4)—W32—0.5ELITE2500-A-19———
11A/T shift solenoid 1 (S1)—W42—0.5ELITE2500-A-23———
12Igniter feedback (IGF)————————
13Starter signal (STA)————————
14Neutral/park switch (NSW)————————
15Ignition 3 (IGT3)—W28—0.5ELITE2500-A-5———
16Ignition 2 (IGT2)—W27—0.5ELITE2500-A-4———
17A/T shift solenoid 2 (S2)—W44—0.5ELITE2500-A-24———
19Voltage feedback (VF)————————
20ISC stepper coil 4 (ISCV4)—W47—0.5ELITE2500-A-33———
21ISC stepper coil 3 (ISCV3)—W46—0.5ELITE2500-A-32———
22ISC stepper coil 2 (ISCV2)—W45—0.5ELITE2500-A-31———
23ISC stepper coil 1 (ISCV1)—W43—0.5ELITE2500-B-19———
24Ignition 1 (IGT1)—W26—0.5ELITE2500-A-3———
26Ignition 4 (IGT4)—W29—0.5ELITE2500-A-6———
27A/T lock-up solenoid (S3)—W51—0.5ELITE2500-A-28———
28Power ground (E11)—W6—0.85SP-GND-1———
29Ignition 6 (IGT6)—W31—0.5ELITE2500-A-8———
3O2 heater (HT)—W41—0.5ELITE2500-A-1———
30Ignition 5 (IGT5)—W30—0.5ELITE2500-A-7———
31TRAC throttle idle switch (IDL2)————————
32TPS idle switch (IDL1)————————
33Power ground (E02)—W7—0.85SP-GND-1———
34Power ground (E01)—W8—0.85SP-GND-1———
4Knock sensor 2 (KNK2, rear)—W25—0.5ELITE2500-B-22———
5Knock sensor 1 (KNK1, front)—W24—0.5ELITE2500-B-21———
7EVAP purge VSV—W52—0.5ELITE2500-A-29———
8Injector 3 (#30, cyl 2&6)—W34—0.5ELITE2500-A-21———
9Injector 2 (#20, cyl 3&5)—W33—0.5ELITE2500-A-20———

SP-0V

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1——W11—0.5OEM-C84-11———
1——W12—0.5OEM-C84-17———
1——W13—0.5OEM-C84-22———
1——W14—0.5OEM-C84-6———
1——W15—0.5ELITE2500-B-14———
1——W16—0.5ELITE2500-B-15———
1——W17—0.5ELITE2500-B-16———
1——W20—0.5ELITE2500-B-5———
1——W22—0.5ELITE2500-B-6———

SP-14V

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1——W1—0.85OEM-C86-22———
1——W2—0.85OEM-C86-23———
1——W3—0.85ELITE2500-A-26———
1——W4—0.85ELITE2500-B-11———

SP-GND

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1——W5—0.85OEM-C85-16———
1——W6—0.85OEM-C88-28———
1——W7—0.85OEM-C88-33———
1——W8—0.85OEM-C88-34———
1——W9—0.85ELITE2500-A-10———
1——W10—0.85ELITE2500-A-11———

Pin map

OEM pointOEM functionOEM familyTarget pointTarget functionTarget familyWire colourEvidence
OEM-C84-1Sensor supply +5V (VCC)vrefELITE2500-A-9+5V DCvrefsingle_source
OEM-C84-10Cam position 1 (G1)trigger_inELITE2500-B-2Cam (Home) (+)trigger_insingle_source
OEM-C84-11Cam 1 return (G1-)sensor_groundELITE2500-B-14 + ELITE2500-B-15 + ELITE2500-B-16 + ELITE2500-B-5 + ELITE2500-B-6Signal ground + Signal ground + Signal ground + Crank (Trigger) (−) + Cam (Home) (−)sensor_ground + trigger_insingle_source
OEM-C84-12TRAC throttle position (VTA2)analog_inELITE2500-A-17AVI 3analog_insingle_source
OEM-C84-13O2 sensor (OX1)lambda_nb_inELITE2500-A-2AVI 4analog_insingle_source
OEM-C84-14Intake air temperature (THA)temp_inELITE2500-B-3AVI 7 (Air Temp)analog_insingle_source
OEM-C84-15OD direct-clutch speed sensor (NCO+)digital_in———single_source
OEM-C84-16Cam position 2 (G2)trigger_inELITE2500-B-8SPI 1digital_insingle_source
OEM-C84-17Cam 2 return (G2-)sensor_groundELITE2500-B-14 + ELITE2500-B-15 + ELITE2500-B-16 + ELITE2500-B-5 + ELITE2500-B-6Signal ground + Signal ground + Signal ground + Crank (Trigger) (−) + Cam (Home) (−)sensor_ground + trigger_insingle_source
OEM-C84-20Coolant temperature (THW)temp_inELITE2500-B-4AVI 8 (Coolant Temp)analog_insingle_source
OEM-C84-22Sensor ground (E2)sensor_groundELITE2500-B-14 + ELITE2500-B-15 + ELITE2500-B-16 + ELITE2500-B-5 + ELITE2500-B-6Signal ground + Signal ground + Signal ground + Crank (Trigger) (−) + Cam (Home) (−)sensor_ground + trigger_insingle_source
OEM-C84-3OD direct-clutch speed sensor (NCO-)digital_in———single_source
OEM-C84-4No.2 speed sensor (SP2-)digital_inELITE2500-B-10SPI 3digital_insingle_source
OEM-C84-5Crank position (NE)trigger_inELITE2500-B-1Crank (Trigger) (+)trigger_insingle_source
OEM-C84-6Crank sensor return (NE-)sensor_groundELITE2500-B-14 + ELITE2500-B-15 + ELITE2500-B-16 + ELITE2500-B-5 + ELITE2500-B-6Signal ground + Signal ground + Signal ground + Crank (Trigger) (−) + Cam (Home) (−)sensor_ground + trigger_insingle_source
OEM-C84-7Throttle position (VTA1)analog_inELITE2500-A-16AVI 2analog_insingle_source
OEM-C84-8Manifold pressure (PIM)analog_inELITE2500-B-13AVI 1 (O2 Input 2)analog_insingle_source
OEM-C84-9No.2 speed sensor (SP2+)digital_inELITE2500-B-7SPI 4digital_insingle_source
OEM-C85-1Slave engine speed (NEO)digital_in———single_source
OEM-C85-10Fuel pump diagnostic (DI)digital_in———single_source
OEM-C85-11Slave TRAC throttle position (VTO2)analog_out———single_source
OEM-C85-14ABS active (MT only)digital_in———single_source
OEM-C85-16Power ground (E1)groundELITE2500-A-10 + ELITE2500-A-11Battery ground + Battery groundgroundsingle_source
OEM-C85-2EFI main relay control (M-REL)low_side_outELITE2500-A-25DPO 6 (ECR OUT)low_side_outsingle_source
OEM-C85-3Check-engine lamp (W)low_side_outELITE2500-A-34Stepper 1 P4 / DPOswitch_outsingle_source
OEM-C85-4Fuel pump control (FPC)low_side_outELITE2500-A-22INJ 4injector_outsingle_source
OEM-C85-5Diagnostic test 1 (TE1)digital_inELITE2500-B-12AVI 6 (O2 Input 1)analog_insingle_source
OEM-C85-6Timing retard (TR)digital_in———single_source
OEM-C85-7Slave throttle position (VTO1)analog_out———single_source
OEM-C86-1Diagnostic test terminal (TT)digital_in———single_source
OEM-C86-10A/T 2nd-gear indicator (2)digital_inELITE2500-A-14AVI 10 (TPS)analog_insingle_source
OEM-C86-11Diagnostic test 2 (TE2)digital_in———single_source
OEM-C86-12No.1 speed sensor (SP1)digital_inELITE2500-B-9SPI 2digital_insingle_source
OEM-C86-13Cat temperature sensor (CCO)temp_inELITE2500-B-20AVI 5analog_insingle_source
OEM-C86-14Battery constant (BATT)power_in———single_source
OEM-C86-17A/T throttle position (L3)digital_in———single_source
OEM-C86-18A/T throttle position (L2)digital_in———single_source
OEM-C86-19A/T throttle position (L1)digital_in———single_source
OEM-C86-2A/T low-gear indicator (L)digital_in———single_source
OEM-C86-20A/C request (A/C)digital_in———single_source
OEM-C86-22EFI main relay power (+B)power_inELITE2500-A-26 + ELITE2500-B-11ECU injector power input + +13.8V ECU supplypower_insingle_source
OEM-C86-23EFI main relay power (+B1)power_inELITE2500-A-26 + ELITE2500-B-11ECU injector power input + +13.8V ECU supplypower_insingle_source
OEM-C86-25Stop light switch (STP)digital_in———single_source
OEM-C86-28Electrical load sense (ELS)digital_in———single_source
OEM-C86-3A/T power/normal mode (P)digital_in———single_source
OEM-C86-5A/C clutch relay (ACMG)low_side_outELITE2500-A-18DPO 1low_side_outsingle_source
OEM-C86-6A/T overdrive disable 2 (OD2)digital_in———single_source
OEM-C86-7A/T overdrive disable 1 (OD1)digital_inELITE2500-A-15AVI 9 (MAP)analog_insingle_source
OEM-C86-8Cat temp warning light (EGW)low_side_outELITE2500-A-27INJ 5injector_outsingle_source
OEM-C86-9Ignition switch (IGSW)digital_inELITE2500-A-1312V ignition inputdigital_insingle_source
OEM-C88-10Injector 1 (#10, cyl 1&4)injector_outELITE2500-A-19INJ 1injector_outsingle_source
OEM-C88-11A/T shift solenoid 1 (S1)low_side_outELITE2500-A-23DPO 3low_side_outsingle_source
OEM-C88-12Igniter feedback (IGF)digital_in———single_source
OEM-C88-13Starter signal (STA)digital_in———single_source
OEM-C88-14Neutral/park switch (NSW)digital_in———single_source
OEM-C88-15Ignition 3 (IGT3)ignition_outELITE2500-A-5IGN 3ignition_outsingle_source
OEM-C88-16Ignition 2 (IGT2)ignition_outELITE2500-A-4IGN 2ignition_outsingle_source
OEM-C88-17A/T shift solenoid 2 (S2)low_side_outELITE2500-A-24DPO 5 (fuel pump trigger)low_side_outsingle_source
OEM-C88-19Voltage feedback (VF)analog_out———single_source
OEM-C88-20ISC stepper coil 4 (ISCV4)low_side_outELITE2500-A-33Stepper 1 P3 / DPOswitch_outsingle_source
OEM-C88-21ISC stepper coil 3 (ISCV3)low_side_outELITE2500-A-32Stepper 1 P2 / DPOswitch_outsingle_source
OEM-C88-22ISC stepper coil 2 (ISCV2)low_side_outELITE2500-A-31Stepper 1 P1 / DPOswitch_outsingle_source
OEM-C88-23ISC stepper coil 1 (ISCV1)low_side_outELITE2500-B-19DPO 4low_side_outsingle_source
OEM-C88-24Ignition 1 (IGT1)ignition_outELITE2500-A-3IGN 1ignition_outsingle_source
OEM-C88-26Ignition 4 (IGT4)ignition_outELITE2500-A-6IGN 4ignition_outsingle_source
OEM-C88-27A/T lock-up solenoid (S3)low_side_outELITE2500-A-28INJ 6injector_outsingle_source
OEM-C88-28Power ground (E11)groundELITE2500-A-10 + ELITE2500-A-11Battery ground + Battery groundgroundsingle_source
OEM-C88-29Ignition 6 (IGT6)ignition_outELITE2500-A-8IGN 6ignition_outsingle_source
OEM-C88-3O2 heater (HT)low_side_outELITE2500-A-1DPO 2low_side_outsingle_source
OEM-C88-30Ignition 5 (IGT5)ignition_outELITE2500-A-7IGN 5ignition_outsingle_source
OEM-C88-31TRAC throttle idle switch (IDL2)digital_in———single_source
OEM-C88-32TPS idle switch (IDL1)digital_in———single_source
OEM-C88-33Power ground (E02)groundELITE2500-A-10 + ELITE2500-A-11Battery ground + Battery groundgroundsingle_source
OEM-C88-34Power ground (E01)groundELITE2500-A-10 + ELITE2500-A-11Battery ground + Battery groundgroundsingle_source
OEM-C88-4Knock sensor 2 (KNK2, rear)knock_inELITE2500-B-22KNOCK 2knock_insingle_source
OEM-C88-5Knock sensor 1 (KNK1, front)knock_inELITE2500-B-21KNOCK 1knock_insingle_source
OEM-C88-7EVAP purge VSVlow_side_outELITE2500-A-29INJ 7injector_outsingle_source
OEM-C88-8Injector 3 (#30, cyl 2&6)injector_outELITE2500-A-21INJ 3injector_outsingle_source
OEM-C88-9Injector 2 (#20, cyl 3&5)injector_outELITE2500-A-20INJ 2injector_outsingle_source

Cut list

WireFromToGauge (mm²)ColourLengthSignalIdent
W1OEM-C86-22SP-14V-10.85no routeEFI main relay power (+B)—
W2OEM-C86-23SP-14V-10.85no routeEFI main relay power (+B1)—
W3SP-14V-1ELITE2500-A-260.85no routeECU injector power input—
W4SP-14V-1ELITE2500-B-110.85no route+13.8V ECU supply—
W5OEM-C85-16SP-GND-10.85no routePower ground (E1)—
W6OEM-C88-28SP-GND-10.85no routePower ground (E11)—
W7OEM-C88-33SP-GND-10.85no routePower ground (E02)—
W8OEM-C88-34SP-GND-10.85no routePower ground (E01)—
W9SP-GND-1ELITE2500-A-100.85no routeBattery ground—
W10SP-GND-1ELITE2500-A-110.85no routeBattery ground—
W11OEM-C84-11SP-0V-10.5no routeCam 1 return (G1-)—
W12OEM-C84-17SP-0V-10.5no routeCam 2 return (G2-)—
W13OEM-C84-22SP-0V-10.5no routeSensor ground (E2)—
W14OEM-C84-6SP-0V-10.5no routeCrank sensor return (NE-)—
W15SP-0V-1ELITE2500-B-140.5no routeSignal ground—
W16SP-0V-1ELITE2500-B-150.5no routeSignal ground—
W17SP-0V-1ELITE2500-B-160.5no routeSignal ground—
W18OEM-C84-1ELITE2500-A-90.5no routeSensor supply +5V (VCC)—
W19OEM-C84-5ELITE2500-B-10.5no routeCrank position (NE)—
W20SP-0V-1ELITE2500-B-50.5no routeCrank (Trigger) (−)—
W21OEM-C84-10ELITE2500-B-20.5no routeCam position 1 (G1)—
W22SP-0V-1ELITE2500-B-60.5no routeCam (Home) (−)—
W23OEM-C84-16ELITE2500-B-80.5no routeCam position 2 (G2)—
W24OEM-C88-5ELITE2500-B-210.5no routeKnock sensor 1 (KNK1, front)—
W25OEM-C88-4ELITE2500-B-220.5no routeKnock sensor 2 (KNK2, rear)—
W26OEM-C88-24ELITE2500-A-30.5no routeIgnition 1 (IGT1)—
W27OEM-C88-16ELITE2500-A-40.5no routeIgnition 2 (IGT2)—
W28OEM-C88-15ELITE2500-A-50.5no routeIgnition 3 (IGT3)—
W29OEM-C88-26ELITE2500-A-60.5no routeIgnition 4 (IGT4)—
W30OEM-C88-30ELITE2500-A-70.5no routeIgnition 5 (IGT5)—
W31OEM-C88-29ELITE2500-A-80.5no routeIgnition 6 (IGT6)—
W32OEM-C88-10ELITE2500-A-190.5no routeInjector 1 (#10, cyl 1&4)—
W33OEM-C88-9ELITE2500-A-200.5no routeInjector 2 (#20, cyl 3&5)—
W34OEM-C88-8ELITE2500-A-210.5no routeInjector 3 (#30, cyl 2&6)—
W35OEM-C86-9ELITE2500-A-130.5no routeIgnition switch (IGSW)—
W36OEM-C84-8ELITE2500-B-130.5no routeManifold pressure (PIM)—
W37OEM-C84-7ELITE2500-A-160.5no routeThrottle position (VTA1)—
W38OEM-C84-20ELITE2500-B-40.5no routeCoolant temperature (THW)—
W39OEM-C85-2ELITE2500-A-250.5no routeEFI main relay control (M-REL)—
W40OEM-C86-5ELITE2500-A-180.5no routeA/C clutch relay (ACMG)—
W41OEM-C88-3ELITE2500-A-10.5no routeO2 heater (HT)—
W42OEM-C88-11ELITE2500-A-230.5no routeA/T shift solenoid 1 (S1)—
W43OEM-C88-23ELITE2500-B-190.5no routeISC stepper coil 1 (ISCV1)—
W44OEM-C88-17ELITE2500-A-240.5no routeA/T shift solenoid 2 (S2)—
W45OEM-C88-22ELITE2500-A-310.5no routeISC stepper coil 2 (ISCV2)—
W46OEM-C88-21ELITE2500-A-320.5no routeISC stepper coil 3 (ISCV3)—
W47OEM-C88-20ELITE2500-A-330.5no routeISC stepper coil 4 (ISCV4)—
W48OEM-C85-3ELITE2500-A-340.5no routeCheck-engine lamp (W)—
W49OEM-C85-4ELITE2500-A-220.5no routeFuel pump control (FPC)—
W50OEM-C86-8ELITE2500-A-270.5no routeCat temp warning light (EGW)—
W51OEM-C88-27ELITE2500-A-280.5no routeA/T lock-up solenoid (S3)—
W52OEM-C88-7ELITE2500-A-290.5no routeEVAP purge VSV—
W53OEM-C84-12ELITE2500-A-170.5no routeTRAC throttle position (VTA2)—
W54OEM-C84-13ELITE2500-A-20.5no routeO2 sensor (OX1)—
W55OEM-C84-14ELITE2500-B-30.5no routeIntake air temperature (THA)—
W56OEM-C86-13ELITE2500-B-200.5no routeCat temperature sensor (CCO)—
W57OEM-C86-12ELITE2500-B-90.5no routeNo.1 speed sensor (SP1)—
W58OEM-C84-4ELITE2500-B-100.5no routeNo.2 speed sensor (SP2-)—
W59OEM-C84-9ELITE2500-B-70.5no routeNo.2 speed sensor (SP2+)—
W60OEM-C85-5ELITE2500-B-120.5no routeDiagnostic test 1 (TE1)—
W61OEM-C86-7ELITE2500-A-150.5no routeA/T overdrive disable 1 (OD1)—
W62OEM-C86-10ELITE2500-A-140.5no routeA/T 2nd-gear indicator (2)—

Bill of materials

CategoryPart numberManufacturerDescriptionQtyUnit

ECU setup sheet

RoleEngine refEngine signalSensorECU pointECU functionECU classSetup flag
No configured channels.

Findings

Open (17)

SeverityCodeSubjectMessage
warnNET_FAMILYOEM-C84-16 ↔ ELITE2500-B-8OEM-C84-16 "Cam position 2 (G2)" [trigger_in] is wired to ELITE2500-B-8 "SPI 1" [digital_in]. Hall-type cam/speed signals can use a digital input if it handles the frequency; VR signals cannot.
warnNET_FAMILYOEM-C85-5 ↔ ELITE2500-B-12OEM-C85-5 "Diagnostic test 1 (TE1)" [digital_in] is wired to ELITE2500-B-12 "AVI 6 (O2 Input 1)" [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.
warnNET_FAMILYOEM-C86-10 ↔ ELITE2500-A-14OEM-C86-10 "A/T 2nd-gear indicator (2)" [digital_in] is wired to ELITE2500-A-14 "AVI 10 (TPS)" [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.
warnNET_FAMILYOEM-C86-7 ↔ ELITE2500-A-15OEM-C86-7 "A/T overdrive disable 1 (OD1)" [digital_in] is wired to ELITE2500-A-15 "AVI 9 (MAP)" [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.
infoNET_FAMILYELITE2500-B-15 ↔ ELITE2500-B-6ELITE2500-B-15 "Signal ground" [sensor_ground] is wired to ELITE2500-B-6 "Cam (Home) (−)" [trigger_in]. Trigger return tied to sensor/trigger ground: correct for single-ended trigger inputs.
infoNET_FAMILYOEM-C84-14 ↔ ELITE2500-B-3OEM-C84-14 "Intake air temperature (THA)" [temp_in] is wired to ELITE2500-B-3 "AVI 7 (Air Temp)" [analog_in]. Thermistor on a plain analog input needs a pull-up; check the channel can enable one.
infoNET_FAMILYOEM-C84-20 ↔ ELITE2500-B-4OEM-C84-20 "Coolant temperature (THW)" [temp_in] is wired to ELITE2500-B-4 "AVI 8 (Coolant Temp)" [analog_in]. Thermistor on a plain analog input needs a pull-up; check the channel can enable one.
infoNET_FAMILYOEM-C85-3 ↔ ELITE2500-A-34OEM-C85-3 "Check-engine lamp (W)" [low_side_out] is wired to ELITE2500-A-34 "Stepper 1 P4 / DPO" [switch_out]. Configure this output as low side.
infoNET_FAMILYOEM-C85-4 ↔ ELITE2500-A-22OEM-C85-4 "Fuel pump control (FPC)" [low_side_out] is wired to ELITE2500-A-22 "INJ 4" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency.
infoNET_FAMILYOEM-C86-13 ↔ ELITE2500-B-20OEM-C86-13 "Cat temperature sensor (CCO)" [temp_in] is wired to ELITE2500-B-20 "AVI 5" [analog_in]. Thermistor on a plain analog input needs a pull-up; check the channel can enable one.
infoNET_FAMILYOEM-C86-8 ↔ ELITE2500-A-27OEM-C86-8 "Cat temp warning light (EGW)" [low_side_out] is wired to ELITE2500-A-27 "INJ 5" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency.
infoNET_FAMILYOEM-C88-20 ↔ ELITE2500-A-33OEM-C88-20 "ISC stepper coil 4 (ISCV4)" [low_side_out] is wired to ELITE2500-A-33 "Stepper 1 P3 / DPO" [switch_out]. Configure this output as low side.
infoNET_FAMILYOEM-C88-21 ↔ ELITE2500-A-32OEM-C88-21 "ISC stepper coil 3 (ISCV3)" [low_side_out] is wired to ELITE2500-A-32 "Stepper 1 P2 / DPO" [switch_out]. Configure this output as low side.
infoNET_FAMILYOEM-C88-22 ↔ ELITE2500-A-31OEM-C88-22 "ISC stepper coil 2 (ISCV2)" [low_side_out] is wired to ELITE2500-A-31 "Stepper 1 P1 / DPO" [switch_out]. Configure this output as low side.
infoNET_FAMILYOEM-C88-27 ↔ ELITE2500-A-28OEM-C88-27 "A/T lock-up solenoid (S3)" [low_side_out] is wired to ELITE2500-A-28 "INJ 6" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency.
infoNET_FAMILYOEM-C88-7 ↔ ELITE2500-A-29OEM-C88-7 "EVAP purge VSV" [low_side_out] is wired to ELITE2500-A-29 "INJ 7" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency.
infoUNMAPPEDOEM25 optional OEM pins are not mapped: OEM-C84-15 OD direct-clutch speed sensor (NCO+); OEM-C84-3 OD direct-clutch speed sensor (NCO-); OEM-C85-1 Slave engine speed (NEO); OEM-C85-10 Fuel pump diagnostic (DI); OEM-C85-11 Slave TRAC throttle position (VTO2); OEM-C85-14 ABS active (MT only); OEM-C85-6 Timing retard (TR); OEM-C85-7 Slave throttle position (VTO1); OEM-C86-1 Diagnostic test terminal (TT); OEM-C86-11 Diagnostic test 2 (TE2); OEM-C86-17 A/T throttle position (L3); OEM-C86-18 A/T throttle position (L2); OEM-C86-19 A/T throttle position (L1); OEM-C86-2 A/T low-gear indicator (L); OEM-C86-20 A/C request (A/C); OEM-C86-25 Stop light switch (STP); OEM-C86-28 Electrical load sense (ELS); OEM-C86-3 A/T power/normal mode (P); OEM-C86-6 A/T overdrive disable 2 (OD2); OEM-C88-12 Igniter feedback (IGF); OEM-C88-13 Starter signal (STA); OEM-C88-14 Neutral/park switch (NSW); OEM-C88-19 Voltage feedback (VF); OEM-C88-31 TRAC throttle idle switch (IDL2); OEM-C88-32 TPS idle switch (IDL1)

Accepted (1)

CodeSubjectReasonBy
REQUIRED_UNMAPPEDOEM-C86-14Battery-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-C86 14: Battery constant (BATT): Haltech Elite 2500 has no battery-constant input; not needed - OEM-C84 15: OD direct-clutch speed sensor (NCO+): no free frequency_in/switch_in on Haltech Elite 2500 - OEM-C84 3: OD direct-clutch speed sensor (NCO-): no free frequency_in/switch_in on Haltech Elite 2500 - OEM-C85 1: Slave engine speed (NEO): no free frequency_in/switch_in on Haltech Elite 2500 - OEM-C85 10: Fuel pump diagnostic (DI): no free frequency_in/switch_in on Haltech Elite 2500 - OEM-C88 12: Igniter feedback (IGF): no free frequency_in/switch_in on Haltech Elite 2500 - OEM-C86 11: Diagnostic test 2 (TE2): no free switch_in/frequency_in/analog_0_5 on Haltech Elite 2500 - OEM-C86 6: A/T overdrive disable 2 (OD2): no free switch_in/frequency_in/analog_0_5 on Haltech Elite 2500 - OEM-C85 14: ABS active (MT only): no free switch_in/frequency_in/analog_0_5 on Haltech Elite 2500 - OEM-C85 6: Timing retard (TR): no free switch_in/frequency_in/analog_0_5 on Haltech Elite 2500 - OEM-C86 1: Diagnostic test terminal (TT): no free switch_in/frequency_in/analog_0_5 on Haltech Elite 2500 - OEM-C86 17: A/T throttle position (L3): no free switch_in/frequency_in/analog_0_5 on Haltech Elite 2500 - OEM-C86 18: A/T throttle position (L2): no free switch_in/frequency_in/analog_0_5 on Haltech Elite 2500 - OEM-C86 19: A/T throttle position (L1): no free switch_in/frequency_in/analog_0_5 on Haltech Elite 2500 - OEM-C86 2: A/T low-gear indicator (L): no free switch_in/frequency_in/analog_0_5 on Haltech Elite 2500 - OEM-C86 20: A/C request (A/C): no free switch_in/frequency_in/analog_0_5 on Haltech Elite 2500 - OEM-C86 25: Stop light switch (STP): no free switch_in/frequency_in/analog_0_5 on Haltech Elite 2500 - OEM-C86 28: Electrical load sense (ELS): no free switch_in/frequency_in/analog_0_5 on Haltech Elite 2500 - OEM-C86 3: A/T power/normal mode (P): no free switch_in/frequency_in/analog_0_5 on Haltech Elite 2500 - OEM-C88 13: Starter signal (STA): no free switch_in/frequency_in/analog_0_5 on Haltech Elite 2500 - OEM-C88 14: Neutral/park switch (NSW): no free switch_in/frequency_in/analog_0_5 on Haltech Elite 2500 - OEM-C88 31: TRAC throttle idle switch (IDL2): no free switch_in/frequency_in/analog_0_5 on Haltech Elite 2500 - OEM-C88 32: TPS idle switch (IDL1): no free switch_in/frequency_in/analog_0_5 on Haltech Elite 2500 - OEM-C85 11: Slave TRAC throttle position (VTO2): no free analog_out on Haltech Elite 2500 - OEM-C85 7: Slave throttle position (VTO1): no free analog_out on Haltech Elite 2500 - OEM-C88 19: Voltage feedback (VF): no free analog_out on Haltech Elite 2500

Sources

ReliabilityKindTitleURLArchiveCapturedSHA-256
4vendor_docHaltech Elite 2500 (HT-151300) spec sheethttps://joeblospeedshop.com/wp-content/uploads/2023/11/HT-151300_SPEC-SHEET-2500-ELITE.pdfarchive2026-10-05c97da78cb851
4vendor_docHaltech Elite 2500 — 26-pin connector pinouthttps://support.haltech.com/portal/en/kb/articles/main-connector-26-pin-elite2500archive2026-10-05ea6fd4d27ac7
4vendor_docHaltech Elite 2500 — 34-pin main connector pinouthttps://support.haltech.com/portal/en/kb/articles/main-connector-34-pin-elite2500archive2026-10-054e633dff8340
2community_copywilbo666: 1JZ-GTE pinout (JZZ30 Soarer page, shared 1JZ-GTE engine/ECU)http://wilbo666.pbworks.com/w/page/47216384/1JZ-GTE%20JZZ30%20Soarer———