Vehicle CAN System

Vehicle CAN System

Vehicle CAN System



Bus Selection

OBD-II - The Haltech ECU can output OBDII data on the Vehicle CAN system. This allows most scan tools, plus third party applications such as iPhone/Android OBDII displays, to display diagnostic trouble codes and sensor data. This data output can be disabled if desired.

Haltech ECU's support the following data channels as per the international OBD-II standards.

Request Diagnostic Data

PID

DESCRIPTION

PREREQUISITE

0x05

Engine Coolant Temperature

Sensor Enabled

0x06

Short Term Fuel Trim Bank 1

O2 Control Bank 1

0x07

Long Term Fuel Trim Bank 1

O2 Control Bank 1 with long term.

0x08

Short Term Fuel Trim Bank 2

O2 Control Bank 2

0x09

Long Term Fuel Trim Bank 2

O2 Control Bank 2 with long term.

0x0A

Fuel Rail Pressure (Gague)

Sensor Enabled

0x0B

Intake Manifold Pressure (Absolute)

Sensor Enabled

0x0C

Engine RPM

None

0x0D

Vehicle Speed

Sensor Enabled

0x0E

Ignition Timing Advance

None

0x0F

Intake Air Temperature

Sensor Enabled or calculated air temperature enabled.

0x10

Air Flow Rate

MAF 1 or MAF 2 enabled

0x11

ABS Throttle Position

TPS or DBW

0x14

Narrow Band 1 - Bank 1 Sensor 1

Sensor Enabled

0x18

Narrow Band 2 - Bank 2 Sensor 1

Sensor Enabled

0x1C

OBD Requirement

None

0x1F

Run Time Since Engine Start

None

0x26

Wideband Sensor 1 - Bank 1 Sensor 2

Wideband sensor 1 Enabled

0x27

Wideband Sensor 2 - Bank 1 Sensor 3

Wideband sensor 2 Enabled

0x28

Wideband Sensor 3 - Bank 2 Sensor 2

Wideband sensor 3 Enabled

0x29

Wideband Sensor 4 - Bank 2 Sensor 3

Wideband sensor 4 Enabled

0x2E

Commanded Evaporative Purge

Evaporative Control enabled

0x2F

Fuel Tank Level Input

Sensor Enabled

0x33

Barometric Pressure (Absolute)

Sensor Enabled

0x3C

Catalyst Temperature 1

EGT Sensor 1 Enabled

0x3D

Catalyst Temperature 2

EGT Sensor 2 Enabled

0x3E

Catalyst Temperature 3

EGT Sensor 3 Enabled

0x3F

Catalyst Temperature 4

EGT Sensor 4 Enabled

0x42

Control Module Voltage

None

0x44

Fuel-Air Commanded Equivalence Ratio

VE or O2 Control enabled

0x52

Ethanol Fuel Percentage

Sensor Enabled

0x5C

Engine Oil Temperature

Sensor Enabled



Request Vehicle Information

PID

DESCRIPTION

Notes

0x02

VIN Number

None

0x04

Calibration Identification

Should not be used by customers

0x0A

Electronic Control Unit Name

None


Vehicle - The ECU is capable of replicating factory CAN data of select vehicles. Select your vehicle from this list if it is available. Details about supported CAN Devices will show in the description box on the right hand side.

Receive Only Mode - When installing an ECU in parallel with a factory ECU, you may need to set the Haltech ECU to receive-only mode. This prevents both ECU's from talking at once, which can cause issues with CAN devices.



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