Cruise Control Wiring

Cruise Control Wiring


When active, the Cruise Control function controls the Drive By Wire Throttle in an attempt to maintain the vehicle speed at the set target speed. This function uses a single analogue input, with each button that is pressed resulting in a different resistance to signal ground.



Options

Input Type

The Input Type must be set to analogue voltage

Enable Light Output Type

Select from the following:

Disabled 

No output is used for the Cruise Control Enable Light.

Digital - Switched

To be selected if the Cruise Control Enable Light is controlled from a Digital Pulsed Output (DPO) from the ECU.

CAN Output - Switched

To be selected if the Cruise Control Enable Light is controlled via the vehicle CAN bus.

Active Light Output Type

Select from the following:

Disabled 

No output is used for the Cruise Control Active Light.

Digital - Switched

To be selected if the Cruise Control Active Light is controlled from a Digital Pulsed Output (DPO) from the ECU.

CAN Output - Switched

To be selected if the Cruise Control Active Light is controlled via the vehicle CAN bus.

Connections

Input

The Cruise Control function uses a single analogue input where each button being pressed results in a different resistance to signal ground. An AVI (Analogue Voltage Input) or SPI (Synchronised Pulsed Input) should be used. 

To make your own, simply have each switch connect a unique resistor between the AVI/SPI and Signal Ground. Ensure that the voltage readings are suitably far apart (minimum 0.1V).

AVI

An AVI (Analogue Voltage Input) is suggested.

Pull up

Enables a 1k pull up resistor to 5V.

Typically the pull up should be enabled for a cruise control input switch. If the input is being shared with another ECU, such as with a piggyback installation with an OEM ECU, then the other ECU will generally include a necessary pull up and this setting should be set to Disabled.

SPI

An SPI (Synchronised Pulsed Input) can be used where there are no available AVIs.

Sensor Type

Set to Hall Effect for all analogue inputs.

Pull up

Enables a weak 10k pull up resistor to 5V.

Typically the pull up should be enabled for a cruise control input switch. If the input is being shared with another ECU, such as with a piggyback installation with an OEM ECU, then the other ECU will generally include a necessary pull up and this setting should be set to Disabled.

Enabled Output

The Cruise Control Enable Light is illuminated whenever the Cruise Control State is anything except Disabled. Select an available output wire, typically a DPO (Digital Pulsed Output) or Stepper Output that will be connected for the Enabled Light.

Active State

Controls the whether the output is normal or inverted. Low will ground the output wire when the output is set to be On. Setting to High will invert this signal, with the output wire being grounded when the output is set to be Off, and not grounded when it is set to be On. (Default = Low).

Active Output

The Cruise Control Active Light is illuminated whenever the Cruise Control State is Cruising, Accelerating or Coasting. Select an available output wire, typically a DPO (Digital Pulsed Output) or Stepper Output that will be connected for the Active Light.

Active State

Controls the whether the output is normal or inverted. Low will ground the output wire when the output is set to be On. Setting to High will invert this signal, with the output wire being grounded when the output is set to be Off, and not grounded when it is set to be On. (Default = Low).

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