Installation Manual

Electrical & Electronic Application And Installation Manual
Production Release Version 1.0
Page 131
11.1 Analogue Sensor
11.1.1 Analogue Sensor Operation
Two inputs are available for Analogue throttle devices, which may be pedal,
lever or cable operated. The Analogue sensor gives a DC Analog output in the
range 0.5 to 4.5 volts, when connected to the engine ECM. The ECM
provides a regulated 5V 200mA power supply.
The Analog sensor should use non-contact Hall effect technology. Robust
potentiometer contact sensors designed for use in vehicles may be
considered under no circumstances should ordinary carbon track or wire
wound potentiometers be used, as they will not be reliable.
For all mobile applications, and those where a rapid change in engine speed
could cause a hazard, an idle validation switch is required. The idle validation
switch closes to ground when the sensor is in the minimum position.
Off idle switches and kickdown switches are not monitored by the engine
ECM.
This Analogue input must only be used to control engine speed from a direct
operator input, and is not suitable as the mechanism for speed control by
another electronic controller.
There is no special requirement for a relationship between angular movement
of the pedal and output voltage.
This document does not measure component acceptability in terms of:
• Temperature
• Vibration
• Electromagnetic Compatibility
• Design life
• Supply voltage requirements (min, max, stability)
• Legal Compliance
It the responsibility of the OEM and the throttle device manufacturer to ensure
that the component is suitable for the application in which it is to be used.
11.1.2 Analogue Sensor Configuration
Before an analogue throttle can be used the configurable parameters must be
programmed into the ECM via the service tool. These parameters are
selectable in the main throttle configuration screen.