Skip to main content

Volvo EC330B Excavator VECU Input and Output Overview

Volvo EC330B Excavator VECU Input and Output Overview

VECU Input and Output
The vehicle control unit is mounted at right wall of cabin. This controls all of functions related with vehicle according to the input signal. There is various input and output signal. The service people have to know about the function first and input-output signal to diagnose and fix the problem.Volvo Vocom 1



Function of VECU
- Self diagnose
- Machine status indication
- Mode selection
- Engine Speed Sensing Power Control(ESSPC)
- Automatic return to idle
- Automatic and one-touch power boost
- Safe start and stop
- Automatic travel speed control
- Emergency control (Limp home mode)
- Pump flow control for optional equipment(X1)

Volvo PTT 2.8


V-ECU

There are two connectors for VECU.
JA connector has 70 pins and JB has 16 pins.
When you replace the VECU, you have to check the part number of VECU because you need to run the conversion kit of VCADS Pro if failed VECU is old one.

https://www.car-auto-repair.com

Comments

Popular posts from this blog

Volvo Truck MID 130 Transmission Control Unit Guide

Volvo Truck MID 130 Transmission Control Unit System Overview The I-Shift transmission is a technologically advanced automated mechanical transmission,designed specifically to work in conjunction with Volvo’s new family of heavy-duty diesel engines. In order to work as a total package, the I-Shift is programmed with each engines efficiency map and is offered with different software options to fulfill each operators needs.

Volvo EC330B Excavator Engine Start and Stop Circuit Old Overview

Volvo EC330B Excavator Engine Start and Stop Circuit Old Overview  Volvo PTT Procedures: Engine Start and Stop Circuit(Old) Power from battery => electric greasing system,start key,start motor,battery relay Power from battery relay =>safety start relay Vocom 88890300 1) Key ON  BR=> Battery relay,alternator(15,pre-magnetization)  ACC=>VECU,Air conditioner,EMS power relay 2) Key Start  R2=> VECU  C=> safety start relay 3) Engine running  Alternator(L)=>hour meter,safety start relay,VECU(charge lamp off)  * Resistor between alternator and BR termainal for quick charge lamp off  Alternator(B+)=>alternator(BS,voltage sensing for regulation)  Alternator(15)=>battery relay 4) Key Off  VECU(JA61)=>battery relay

Volvo EC330B Excavator Electronic Control System Overview

Volvo ECB330B Excavator Electronic control system overview   Volvo ECB330B Electronic control system is composed of various computers and its communication line. In our system, 2 computer (EECU, VECU) is programmable and 1 computer (MDU) is not. Volvo Tech Tool Communication is important thing to control the machine properly. We use two communication lines that is international protocol. The line is twisted to protect the bus from electrical interference.