Engine management
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Nexus S3 ECU Only (HT-213000)
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SKU: HT-213000
Nexus Must-Haves
Engine management
Sold separately
Sold separately
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Nexus S3 ECU Only (HT-213000)
Product details
Description
Small part, real job. Nexus S3 ECU Only and does it the way the rest of a Haltech system expects.
Why It Matters
Correct pinouts the first time, labelled circuits that make diagnosis simple, and factory-grade terminations with no splices to suspect later. Wiring is where builds stall, and purpose-built harnesses are how they don't.
Upgrade your engine's performance and functionality with Haltech's Nexus S3, successor to the Elite 2500. Designed for engines with up to 8 cylinders or 4 rotors, this ECU is perfect for advanced racing applications.
The Details
- SKU: HT-213000
Nexus S3 ECU Pinout
Complete pin-by-pin map of both Nexus S3 ECU connectors. Wire colors are those of the Nexus S3/S2 universal wire-in harness, which is sold separately.
Connector A
34-pin AMP, Keyway 1 - power, ground, injectors, ignition, DPO, HBO and CAN 1.
Looking into the connector on the ECU
| Pin | Function | Harness Wire Color |
|---|---|---|
| A1 | Injector 1 | Blue |
| A2 | Injector 2 | Blue/Black |
| A3 | Injector 3 | Blue/Brown |
| A4 | Injector 4 | Blue/Red |
| A5 | Injector 5 | Blue/Orange |
| A6 | Injector 6 | Blue/Yellow |
| A7 | Injector 7 | Blue/Green |
| A8 | Injector 8 | Blue/Violet |
| A9 | DPO 1 | Violet/Black |
| A10 | Battery Ground Input | Black |
| A11 | Battery Ground Input | Black |
| A12 | DPO 2 | Violet/Brown |
| A13 | Ignition Switch Input | Pink |
| A14 | DPO 3 | Violet/Red |
| A15 | DPO 4 | Violet/Orange |
| A16 | DPO 5 | Violet/Yellow |
| A17 | DPO 6 | Violet/Green |
| A18 | Switched +12V Input | Red |
| A19 | HBO 1 | Brown/Black |
| A20 | HBO 2 | Brown/Red |
| A21 | HBO 3 | Brown/Green |
| A22 | HBO 4 | Brown/Pink |
| A23 | CAN 1 High | White |
| A24 | CAN 1 Low | Blue |
| A25 | Switched +12V Input | Red |
| A26 | ECR Output | Black/Red |
| A27 | Ignition 1 | Yellow/Black |
| A28 | Ignition 2 | Yellow/Red |
| A29 | Ignition 3 | Yellow/Orange |
| A30 | Ignition 4 | Yellow/Green |
| A31 | Ignition 5 | Yellow/Brown |
| A32 | Ignition 6 | Yellow/Blue |
| A33 | Ignition 7 | Yellow/Violet |
| A34 | Ignition 8 | Yellow/Grey |
Connector C
34-pin AMP, Keyway 2 - engine position, sensors, inputs, knock, wideband and CAN 2.
Looking into the connector on the ECU
| Pin | Function | Harness Wire Color |
|---|---|---|
| C1 | Trigger (Crank) + | Yellow |
| C2 | Trigger (Crank) - | Green |
| C3 | Home (Cam) + | Yellow |
| C4 | Home (Cam) - | Green |
| C5 | SPI 1 | Grey/Brown |
| C6 | SPI 2 | Grey/Red |
| C7 | SPI 3 | Grey/Orange |
| C8 | SPI 4 | Grey/Yellow |
| C9 | Sensor +8V Supply | Orange/White |
| C10 | AVI 1 | White |
| C11 | AVI 2 | White/Yellow |
| C12 | AVI 3 | White/Grey |
| C13 | AVI 4 | White/Violet |
| C14 | AVI 5 | White/Green |
| C15 | AVI 6 | White/Orange |
| C16 | AVI 7 | White/Black |
| C17 | AVI 8 | White/Brown |
| C18 | AVI 9 | White/Red |
| C19 | SPI 5 | Grey/Pink |
| C20 | SPI 6 | Grey/Light Green |
| C21 | CAN 2 High | White |
| C22 | CAN 2 Low | Blue |
| C23 | Knock 1 | White |
| C24 | Knock 2 | White |
| C25 | Sensor +5V Supply | Orange |
| C26 | Signal Ground | Black/White |
| C27 | AVI 10 | Light Green |
| C28 | AVI 11 | Light Green/Black |
| C29 | WBI 1 Heater + | Grey |
| C30 | WBI 1 Input | Yellow |
| C31 | WBI 1 Pump | Red |
| C32 | WBI 1 Nernst | Black |
| C33 | WBI 1 Heater - | White |
| C34 | WBI 1 Cal | Green |
Trigger and Home run in shielded four-core cable (Trigger: grey jacket, Home: grey/black jacket). The red +12V and black signal-ground cores in those cables land on Connector A, not Connector C. Knock 1 and Knock 2 each run in shielded two-core cable. Shielded cables should be earthed at one end only.
Pinout data taken from the Haltech Nexus S3 / Nexus S2 Universal Wire-In Harness wiring diagram (HT-182200, revision 1.1) and the Nexus S3/S2 Quick Start Guide. This listing is the ECU only - the wire-in harness, sensors and hardware are sold separately.
Applications
Unsure whether this suits your ECU or build? Send us the details before ordering and we will confirm compatibility.
Tuned By Shawn is a Platinum Haltech Dealer. Questions on compatibility with your ECU or build, send them through before ordering and we will confirm the right part.
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