Which pins are CAN on the Haltech Elite 2500?

CAN H: pin B23 (White, W). CAN L: pin B24 (Blue, L).

Which pins are the crank and cam inputs on the Haltech Elite 2500?

CRANK (TRIGGER) (+): pin B1 (Yellow, Y). CAM (HOME) (+): pin B2 (Yellow, Y). CRANK (TRIGGER) (-): pin B5 (Green, G). CAM (HOME) (-): pin B6 (Green, G).

Which pins are the injector outputs on the Haltech Elite 2500?

INJ 1: pin A19 (Blue, L). INJ 2: pin A20 (Blue with black stripe, L/B). INJ 3: pin A21 (Blue with brown stripe, L/BR). INJ 4: pin A22 (Blue with red stripe, L/R). INJ 5: pin A27 (Blue with orange stripe, L/O). INJ 6: pin A28 (Blue with yellow stripe, L/Y). INJ 7: pin A29 (Blue with green stripe, L/G). INJ 8: pin A30 (Blue with violet stripe, L/V).

Which pins are the ignition outputs on the Haltech Elite 2500?

IGN 1: pin A3 (Yellow with black stripe, Y/B). IGN 2: pin A4 (Yellow with red stripe, Y/R). IGN 3: pin A5 (Yellow with orange stripe, Y/O). IGN 4: pin A6 (Yellow with green stripe, Y/G). IGN 5: pin A7 (Yellow with brown stripe, Y/BR). IGN 6: pin A8 (Yellow with blue stripe, Y/L). IGN 7: pin B17 (Yellow with violet stripe, Y/V). IGN 8: pin B18 (Yellow with grey stripe, Y/GY).

Which pins are ground on the Haltech Elite 2500?

BATTERY GROUND: pins A10, A11 (Black, B). SIGNAL GROUND: pins B14, B15, B16 (Black with white stripe, B/W).

Which pins power the Haltech Elite 2500?

12V IGNITION INPUT: pin A13 (Pink, P). ECU INJECTOR POWER INPUT (REQUIRED CONNECTION FOR ECU TO OPERATE): pin A26 (Red with blue stripe, R/L). +13.8V ECU SUPPLY (ECU POWER): pin B11 (Red with white stripe, R/W).

Which pins are the sensor supplies on the Haltech Elite 2500?

+5V DC: pin A9 (Orange, O). +8V DC: pin A12 (Orange with white stripe, O/W).

Pinout

Haltech Elite 2500 pinout

Every pin of the 34-pin A and 26-pin B connectors, with the wire colours of Haltech's harness. Tap a pin to see what it does.

Every pin checked against 3 Haltech documents

Connector A · 34-pinLooking into the connector on the ECU

Connector B · 26-pinLooking into the connector on the ECU

Pick any pin on the drawing or in the table to see its function, its wire colour and the documents it was checked in.

Haltech Elite 2500 connector A pinout (34-pin)

Pin	Function	Wire	Haltech note
A1	DPO 2	V/BRViolet with brown stripe	1A Max Current output to ground, Fixed 5v Pull-up
A2	AVI 4	O/YOrange with yellow stripe	0-5v signal input, switchable 1K pull up
A3	IGN 1	Y/BYellow with black stripe	1A Max Current
A4	IGN 2	Y/RYellow with red stripe	1A Max Current
A5	IGN 3	Y/OYellow with orange stripe	1A Max Current
A6	IGN 4	Y/GYellow with green stripe	1A Max Current
A7	IGN 5	Y/BRYellow with brown stripe	1A Max Current
A8	IGN 6	Y/LYellow with blue stripe	1A Max Current
A9	+5V DC	OOrange	100mA Max Current
A10	BATTERY GROUND	BBlack	Connect to Vehicle Battery Negative Terminal (-)
A11	BATTERY GROUND	BBlack	Connect to Vehicle Battery Negative Terminal (-)
A12	+8V DC	O/WOrange with white stripe	100mA Max Current
A13	12V IGNITION INPUT	PPink	12V on IGN and Cranking Only
A14	AVI 10 (TPS)	WWhite	0-5v signal input, Software Switchable 1K pull up resistor
A15	AVI 9 (MAP)	YYellow	0-5v signal input, Software Switchable 1K pull up resistor
A16	AVI 2	O/BOrange with black stripe	0-5v signal input, Software Switchable 1K pull up resistor
A17	AVI 3	O/ROrange with red stripe	0-5v signal input, Software Switchable 1K pull up resistor
A18	DPO 1	V/BViolet with black stripe	1A Max Current output to ground, User definable pull-up
A19	INJ 1	LBlue	Current Controlled , 0-8A Peak , 0 - 2A Hold
A20	INJ 2	L/BBlue with black stripe	Current Controlled , 0-8A Peak , 0 - 2A Hold
A21	INJ 3	L/BRBlue with brown stripe	Current Controlled , 0-8A Peak , 0 - 2A Hold
A22	INJ 4	L/RBlue with red stripe	Current Controlled , 0-8A Peak , 0 - 2A Hold
A23	DPO 3	V/RViolet with red stripe	1A Max Current output to ground, Fixed 12v Pull-up
A24	DPO 5 (FUEL PUMP TRIGGER)	B/YBlack with yellow stripe	1A Max Current output to ground, Fixed 12v Pull-up
A25	DPO 6 (ECR OUT)	B/RBlack with red stripe	1A Max Current output to ground, Fixed 12v Pull-up
A26	ECU INJECTOR POWER INPUT (REQUIRED CONNECTION FOR ECU TO OPERATE)	R/LRed with blue stripe	12V input from injector power relay
A27	INJ 5	L/OBlue with orange stripe	Current Controlled , 0-8A Peak , 0 - 2A Hold
A28	INJ 6	L/YBlue with yellow stripe	Current Controlled , 0-8A Peak , 0 - 2A Hold
A29	INJ 7	L/GBlue with green stripe	Current Controlled , 0-8A Peak , 0 - 2A Hold
A30	INJ 8	L/VBlue with violet stripe	Current Controlled , 0-8A Peak , 0 - 2A Hold
A31	STEPPER 1 P1 / DPO	GGreen	Hi / Lo Side Driver, 1A Max Current Source & Sink
A32	STEPPER 1 P2 / DPO	G/BGreen with black stripe	Hi / Lo Side Driver, 1A Max Current Source & Sink
A33	STEPPER 1 P3 / DPO	G/BRGreen with brown stripe	Hi / Lo Side Driver, 1A Max Current Source & Sink
A34	STEPPER 1 P4 / DPO	G/RGreen with red stripe	Hi / Lo Side Driver, 1A Max Current Source & Sink

Haltech Elite 2500 connector B pinout (26-pin)

Pin	Function	Wire	Haltech note
B1	CRANK (TRIGGER) (+)	YYellowShielded	Supports Digital and Reluctor Based Sensors
B2	CAM (HOME) (+)	YYellowShielded	Supports Digital and Reluctor Based Sensors
B3	AVI 7 (AIR TEMP)	GYGrey	0-5v signal input, Software Switchable 1K pull up resistor
B4	AVI 8 (COOLANT TEMP)	VViolet	0-5v signal input, Software Switchable 1K pull up resistor
B5	CRANK (TRIGGER) (-)	GGreenShielded	Ground Reference for Reluctor Based Sensors
B6	CAM (HOME) (-)	GGreenShielded	Ground Reference for Reluctor Based Sensors
B7	SPI 4	GY/RGrey with red stripeShielded	50Khz Max Frequency , 25V DC Max Input Voltage
B8	SPI 1	GYGreyShielded	50Khz Max Frequency , 25V DC Max Input Voltage
B9	SPI 2	GY/BGrey with black stripeShielded	50Khz Max Frequency , 25V DC Max Input Voltage
B10	SPI 3	GY/BRGrey with brown stripeShielded	50Khz Max Frequency , 25V DC Max Input Voltage
B11	+13.8V ECU SUPPLY (ECU POWER)	R/WRed with white stripe	12V Input to ECU
B12	AVI 6 (O2 INPUT 1)	GY/OGrey with orange stripeShielded	0-5v signal input. Compatible with Narrow Band O2 Sensors
B13	AVI 1 (O2 INPUT 2)	GY/YGrey with yellow stripeShielded	0-5v signal input. Compatible with Narrow Band O2 Sensors
B14	SIGNAL GROUND	B/WBlack with white stripe	Sensor ground reference for sensors
B15	SIGNAL GROUND	B/WBlack with white stripe	Sensor ground reference for sensors
B16	SIGNAL GROUND	B/WBlack with white stripe	Sensor ground reference for sensors
B17	IGN 7	Y/VYellow with violet stripe	1A Max Current
B18	IGN 8	Y/GYYellow with grey stripe	1A Max Current
B19	DPO 4	V/OViolet with orange stripe	1A Max Current output to ground, Fixed 12v Pull-up
B20	AVI 5	O/GOrange with green stripe	0-5v signal input, Software Switchable 1K pull up resistor
B21	KNOCK 1	GY/GGrey with green stripe	Supports Piezoelectric knock sensors
B22	KNOCK 2	GY/LGrey with blue stripe	Supports Piezoelectric knock sensors
B23	CAN H	WWhite	CAN Hi (ISO 11898), Selectable Haltech or Vehicle Bus
B24	CAN L	LBlue	CAN Lo (ISO 11898), Selectable Haltech or Vehicle Bus
B25	DBW 1 / DPO	BR/BBrown with black stripe	5A Peak Current, 1A Average Current, 100KHz Max Freq
B26	DBW 2 / DPO	BR/RBrown with red stripe	5A Peak Current, 1A Average Current, 100KHz Max Freq

Haltech Elite 2500 pins at a glance

Which pins are CAN on the Haltech Elite 2500?: CAN H: pin B23 (White, W). CAN L: pin B24 (Blue, L).
Which pins are the crank and cam inputs on the Haltech Elite 2500?: CRANK (TRIGGER) (+): pin B1 (Yellow, Y). CAM (HOME) (+): pin B2 (Yellow, Y). CRANK (TRIGGER) (-): pin B5 (Green, G). CAM (HOME) (-): pin B6 (Green, G).
Which pins are the injector outputs on the Haltech Elite 2500?: INJ 1: pin A19 (Blue, L). INJ 2: pin A20 (Blue with black stripe, L/B). INJ 3: pin A21 (Blue with brown stripe, L/BR). INJ 4: pin A22 (Blue with red stripe, L/R). INJ 5: pin A27 (Blue with orange stripe, L/O). INJ 6: pin A28 (Blue with yellow stripe, L/Y). INJ 7: pin A29 (Blue with green stripe, L/G). INJ 8: pin A30 (Blue with violet stripe, L/V).
Which pins are the ignition outputs on the Haltech Elite 2500?: IGN 1: pin A3 (Yellow with black stripe, Y/B). IGN 2: pin A4 (Yellow with red stripe, Y/R). IGN 3: pin A5 (Yellow with orange stripe, Y/O). IGN 4: pin A6 (Yellow with green stripe, Y/G). IGN 5: pin A7 (Yellow with brown stripe, Y/BR). IGN 6: pin A8 (Yellow with blue stripe, Y/L). IGN 7: pin B17 (Yellow with violet stripe, Y/V). IGN 8: pin B18 (Yellow with grey stripe, Y/GY).
Which pins are ground on the Haltech Elite 2500?: BATTERY GROUND: pins A10, A11 (Black, B). SIGNAL GROUND: pins B14, B15, B16 (Black with white stripe, B/W).
Which pins power the Haltech Elite 2500?: 12V IGNITION INPUT: pin A13 (Pink, P). ECU INJECTOR POWER INPUT (REQUIRED CONNECTION FOR ECU TO OPERATE): pin A26 (Red with blue stripe, R/L). +13.8V ECU SUPPLY (ECU POWER): pin B11 (Red with white stripe, R/W).
Which pins are the sensor supplies on the Haltech Elite 2500?: +5V DC: pin A9 (Orange, O). +8V DC: pin A12 (Orange with white stripe, O/W).

Haltech Elite 2500 pinout sheet

A printable sheet with the connector drawings and every pin, made from the checked data on this page.

Download PDF Download diagram (PNG)

Haltech Elite 2500 pinout diagram with wire colours

Where this comes from

Only Haltech's own documents. Pin names and notes are written exactly as Haltech writes them.

Haltech pinout table (support site)
- Main Connector 34 Pin (Elite2500)
- Main Connector 26 Pin (Elite2500)
Haltech wiring diagram
- Elite 2500 Premium Universal Wiring Harness diagram (HT-141304, rev 6)
- Elite 2500 Premium Universal Wiring Harness diagram (HT-141304, rev 6) - CAN pair colours read from the drawing
Haltech sheet: upgrading to Elite 2500 from Platinum Sport
- Haltech "Upgrading to Elite 2500 from Platinum Sport ECUs" pin-out

Haltech wire colour codes

B = Black
BR = Brown
G = Green
GY = Grey
L = Blue
O = Orange
P = Pink
R = Red
V = Violet
Y = Yellow
W = White

Two letters: the first is the wire colour, the second is the stripe.

How we checked it

We start from Haltech's pinout table for this ECU.
We read every pin again from a second Haltech document, the wiring diagram or the quick start guide. A script compares the two, pin by pin.
A pin is only shown when its function and its wire colour match in both. Where a diagram has no text to read, we read the pins off the drawing itself.
The notes are Haltech's own words from its pinout table.

Where Haltech's documents disagree

B14: Haltech's older sheet for upgrading from Platinum Sport calls this pin Battery Ground. The current Haltech pinout and the Elite 2500 wiring diagram (HT-141304, revision 6) both say Signal Ground, so that is what we show.

ECU Recovery is not affiliated with Haltech. Haltech and Elite are trademarks of Haltech. If your harness came with its own diagram, check your wiring against it.

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