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MaxiDiag MD808 Pro

The MaxiDiag MD808 Pro is built to take your diagnostic experience to a whole new level. Loaded with oil service reset, battery registration and reset, parking brake pad relearn after replacement, steering angle sensor relearn and diesel particulate filter regeneration functions, MD808 Pro can access ALL available modules for the best diagnosis operations. With all that enclosed in a 4-inch hand-held device, there is no better multifunctional scan tool on the market.

Features:

• Support Read/Clear Codes and Live Data functions for ALL systems

• Read and clear trouble codes, control and test BMS/Oil Reset/ SRS/EPB/DPF systems

• Support oil service reset

• Support battery registration and reset

• Diesel particulate service including forced regeneration

• Reset steering angle sensor (SAS) functionality

• Relearn parking brake pad after replacement

• Reset service mileage and service intervals

• Turn off ECU brake warning light

• Perform O2 monitor, on-board monitor, I/M readiness and component testing

• Print diagnostic reports via PC connection

• Global OBD II coverage for U.S. domestic, Asian and European makes and models

• All OBD II protocols, all 10 test modes and enhanced OBD II mode 6 support

Specifications:

Processor: ARM® Thumb® Processor (400 MHz)
Memory: 32MB, 166 MHz
Display: 4.0 inch LCD with 800x480 resolution
Connectivity: Mini USB: 2.0 Micro SD Card (16GB)
Power Consumption: 1.7 W
Operating Temperature: -10°C to 60°C (14°F to 140°F)
Storage Temperature: -20°C to 70°C (-4°F to 158°F)
Operating Humidity: 5% - 95% non-condensing
Housing: Strong plastic housing with protective rubber boot
Dimensions: (W x H x D) 202 mm x 92 mm x 35 mm (8.35” x 3.62” x 1.4”)
Weight: 313 g (0.69 lb.)

On-Board Diagnostics (OBD) II

The first generation of On-Board Diagnostics (called OBD I) was developed
by the California Air Resources Board (ARB) and implemented in 1988 to
monitor some of the emission control components on vehicles. As
technology evolved and the desire to improve the On-Board Diagnostic
system increased, a new generation of On-Board Diagnostic system was
developed. This second generation of On-Board Diagnostic regulations is
called “OBD II”.
The OBD II system is designed to monitor emission control systems and key
engine components by performing either continuous or periodic tests of
specific components and vehicle conditions. When a problem is detected,
the OBD II system turns on a warning lamp (MIL) on the vehicle instrument
panel to alert the driver typically by the phrase of “Check Engine” or “Service
Engine Soon”. The system will also store important information about the
detected malfunction so that a technician can accurately find and fix the
problem. Here below follow three pieces of such valuable information:
1. Whether the Malfunction Indicator Light (MIL) is commanded ‘on’ or ‘off’;
2. Which, if any, Diagnostic Trouble Codes (DTCs) are stored;
3. Readiness Monitor status.

Oil Reset

The Engine Oil Life System calculates when to change the engine oil and
filter based on vehicle use. An oil change is required whenever indicated by
the display and according to the recommended maintenance schedule.
Whenever the oil is changed, reset the system so it can calculate when the
next oil change is required. If a situation occurs where the oil is changed
prior to a service indicator being turned on, the system also needs to be
reset.

EPB

The EPB is a system which controls the brake force by pulling the parking
cable as in conventional existing parking brakes. EPB system includes a DC
motor, a gearbox, a screw, a nut, a current sensor, a Hall-effect force sensor,
an acceleration sensor and an ECU.
Generally, if a driver or a high level system operates the EPB system, the
controller calculates a target force from the parking cable based on the car
mass as well as the inclination of the road as measured by the acceleration
sensor. The EPB increases the brake force by pulling the parking cable
using the DC motor until the brake force reaches the target force. Brake
force is measured by the Hall-effect force sensor.

SAS

SAS (Steering Angle Sensor) measures the rotation angle, angle velocity
and direction of the steering wheel, providing information on the direction in
which the driver wishes to go. Steering angle sensors are required for
systems such as ESC and are also used in electric power steering and
active steering systems (EPS or AFS) as well as parking assistance systems
and curve light systems.
A scan tool can be used to obtain these data in degrees. The SAS is located
in a sensor cluster in the steering column. The cluster always has more than
one steering position sensor for redundancy and to confirm data. The ESC
module must receive two signals to confirm the steering wheel position.
These signals are often out of phase with each other.
Many vehicles require the SAS be reset or recalibrated after an alignment is
performed or parts in the steering system are replaced.
There are three types of reset procedures: systems that self-calibrate on
their own, vehicles that require specific wires or buttons be pressed and,
systems that require recalibration with a scan tool.
Self-Calibration
Some newer vehicles can auto calibrate by having the wheel turned from
lock to lock and then centered and cycling the key.
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Scan Tool Steering Angle Sensor Reset
There are many options for scan tools to reset SASs. Some tools are even
integrated into an alignment system. But, most tools recommend that the
calibration be performed on a level surface. Also, it is a good idea to perform
a lock-to-lock turn to complete the calibration.

DPF

A Diesel Particulate Filter, often referred to as the DPF, is a device
designed and integrated into the Diesel Engine Exhaust Systems to trap and
remove Diesel Particulate Matter or Soot from the exhaust gasses of the
diesel engine. A DPF works in conjunction with the oxidation catalyst and
EGR valve to remove a majority of the NOx, particulate matter and unburned
hydrocarbons from burned diesel fuel. The result of DPF is greater economy,
improved smoothness and a reduction of harmful emissions.
The soot trapped in DPF will partially block your DPF causing the DPF/CAT
light to illuminate on the dash (normally when 45% blockage is reached) at
which point regeneration is required to get the DPF back in to safety zone.
DPF Light ON
When the DPF light appears on the dash intermittently, this means there is a
partial blockage in your DPF and a regeneration process is required. If you
ignore it and keep on driving, eventually it will stay on permanently and in
most severe cases brings on the Engine Management Light and even the
Coil Light. If this happens, you will lose all power and the vehicle will fall into
“Limp Mode”.
Regeneration Process
Regeneration is the DPF’s way to clear the blockage through continuously
burning of the soot at higher temperatures and allowing the now harmless
produce to escape through the exhaust system. There are two types of
regeneration processes for vehicles.
Passive Regeneration
Passive regeneration is an automated regeneration which often occurs on
drives where there is prolonged high exhaust temperatures, for example, on
motorway-type runs. This needs no intervention from the engine control unit.
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ECM monitors driving style and selects a suitable time to employ
regeneration. Regeneration continues until ECM calculates that all the soot
has been burned. But sometimes the required long journey motorway-type
trip necessary to complete a passive regeneration of the DPF system is not
attained, the regeneration fails. So manufacturers have had to adapt the
technology and design an “active” regeneration process controlled by the
ECM.
Active Regeneration
When the diesel particulate (soot) loading in the DPF reaches a pre-set limit
(normally around 45%), the ECU will make minor adjustments to the fuel
injection timing system which will in turn increase the exhaust temperatures
and help initiate the DPF regeneration process. This is a smart way of
getting a motorway-type temperature to build up inside the DPF system and
begin a full regeneration to bring the unit back to good health.

BMS

The battery management system (BMS) is a critical electronic system of
vehicle that monitors and manages a rechargeable battery. The purpose of
the BMS is to guarantee safe and reliable battery operation by monitoring
and evaluating the battery states, including state of charge, state of health,
and state of life, controlling the charging and discharging of the battery,
balancing the cell etc. As an electrochemical product, a battery acts
differently under different operational and environmental conditions.

Accessories:

1. User Manual

2. Quick Reference Guide

3. Main cable

4. Micro SD card

5. Carry case

6. USB Cable