Linhai ATV 500-D T3 EFI, Service Manual

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CHAPTER 3 ENGINE
LH500ATV-D T3 EFI SERVICE MANUA 19.0
CHAPTER 3 ENGINE PAGE. 3- 121
3.6.2.1 ECU
3.6.2.1 .1 Description & Working Principle
The ECU continuously monitors the operating conditions of the engine through the system sensors.
It also provides the necessary computation, adaptability, and output control in order to minimize the
tailpipe emissions and fuel consumption, while optimizing vehicle drivability for all operating conditions.
The ECU also provides diagnosis when system malfunctions occur.
3.6.2.1 .2 Appearance
The MT05 ECU has a polyester header, with an aluminum base plate. below shows the top and
bottom view of the MT05 ECU.
3.6.2.1 .3 Handling – DOs & DONTs
ACTION REASON
DO NOT : Place the ECU close to the
exhaust pipe or Engine when removed
High temperature might reduce the life of
the ECU and also can damage the ECU
DO NOT : Place the ECU close to or pour
water, oil or any other liquids.
ECU is susceptible to water and liquids
DO NOT : Allow mud or other debris to
accumulate on the surface of the ECU
Having mud or debris accumulated on the
ECU casing reduces its heat dissipation
efficiency.
DO NOT : Apply any voltage relative to any
point to the ECU
Drastically affects the performance of the
ECU and may lead to ECU damage
DO NOT : Clean ECU with any solvent or
any corrosive liquid
Can damage the housing of the ECU
DO: Take extreme care that water droplets
or excess moisture should not fall on ECU
connectors
ECU connectors can get short and may
lead to ECU damage
DO: Clean the ECU with a moist cloth and
keep it dry
Prevents ECU damage
3.6.2.1 .4 Installation requirements
The ECU shall be mounted using M5 machined screws with a torque of 3.9Nm ±10%. The mounting
surface should also be flat to avoid subjecting the base plate to unnecessary force and warping the PCB.
3.6.2.1 .5 Power Requirements
Power Supply: The controller’s power supply module will power up the
microprocessor if the battery voltage is greater than 6.3 Volts. The power on is
controlled by the controller hardware only.
Operating Range: All planned functions are executed in this range. Battery
and/or Ignition voltage: 9.0 to 16V DC