6. WARRANTY AND SERVICE ...................................................................... 24
6.1 LIMITED ONE YEAR WARRANTY ................................................................ 24
6.2 SERVICE PROCEDURES ................................................................................ 24
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1. Introduction
1.1 Background
The days of diagnosing and repairing automobiles without a laptop
beside you are quickly fading. Newer vehicles include a large number of
onboard computers that are each dedicated to performing specific tasks.
Common onboard computers in newer vehicle include the Engine
Control Module (ECM), Transmission Control Module (TCM), Fuel
Injection Control Module (FICM), Anti-lock Brake System (ABS),
Body Control Module (BCM) and numerous other control modules to
manage every electronic system from power door locks to crash data.
Each onboard computer is programmed at the factory with software
enabling it to perform certain tasks. Inside the ECM is software
containing hundreds or even thousands of parameters to control spark,
fuel, idle, cruising, emissions, economy, drivability, and performance.
Likewise, a TCM will have software to control how the transmission
and torque converter function. Sometimes, after the vehicle is shipped
from the automaker, updates are released to improve emissions, fuel
economy, drivability, performance, or specific bugs in the original
software that have caused warranty issues. Updating this software can be
a proactive fix because often it will resolve problems that a customer
hasn’t reported or noticed yet.
The practice of updating software in these modules is more commonly
known as flash reprogramming. At new car dealerships, flash
reprogramming is relatively straight forward because service technicians
are connected to the automaker and have the expensive, specialized
dealer service tools dedicated to reprogramming. The independent repair
shops have faced a more difficult challenge because most shops
typically service more than one make of vehicles. This increases the
complexity, cost and training required to operate dozens of different
factory service tools.
1.2 J2534 - A Solution Arrives
In 2000, the Environmental Protection Agency (EPA) had been
watching this issue and decided to take action. The EPA requested a
standard be developed within the SAE that led to J2534, a mandated
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specification to which automakers who sell vehicles in the United States
must conform. The original J2534 specification was later updated to
J2534-1 in order to support all automakers. The EPA mandate requires
automakers to support aftermarket repair shops with J2534-1 flash
reprogramming for any emissions related computer modules on a
vehicle that can be reprogrammed by a new car dealership. This
mandate took effect for all 2004 and newer vehicles.
SAE J2534 is a standard devised of two independent parts: subscription
software and a J2534 compliant Pass Thru vehicle interface. The
subscription software comes directly from the automaker, runs on your
shop PC or laptop, and can either be web-based or CD-based. The
subscription fees are charged differently for each automaker.
1.3 Pass-Thru Vehicle Interface
The second part of the system is a SAE J2534 compliant Pass-Thru
vehicle interface. This device acts as a gateway between the vehicle’s
onboard computers and the technician’s personal computer. It translates
messages from the PC into the protocols used by the automobile and
vice versa.
Performing J2534 reprogramming requires computer knowledge and
experience. The technician will need to operate a laptop or desktop, the
Pass-Thru device, and the reprogramming software. Operation will also
require a good high-speed connection to the Internet such as DSL, Cable,
or T1.
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2. Getting to Know MaxiFlash Pro
Thank you for choosing the MaxiFlash® Pro Reprogramming Device!
This multi-protocol Pass-Thru vehicle interface is a fully compliant SAE
J2534-1 & SAE J2534-2 (March 2006) device, specially designed to
provide users with convenient PC communication and ECU
reprogramming capabilities on any modern vehicle diagnostic bus, and
offer the most significant features desired by OEM customers: reliability,
fast performance and flexibility.
2.1 Front Panel
The MaxiFlash® Pro Pass-Thru device supports three ways of PC
connection: Ethernet, USB and Wi-Fi, which make PC communication
and vehicle reprogramming all the more convenient and easy for
technicians. These three connection ports to the PC are available in the
front panel of the device.
1) Status Lights
There are 5 status lights in the front panel of the reprogramming tool,
which indicates the Pass-Thru interface’s working status as well as
the hardware conditions, and are very useful for troubleshooting the
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device’s communication or connection to the Vehicle or PC. Please
Light
Description
Power
Illuminates solid green when power-on.
Error
Illuminates solid red when serious hardware failure
occurs. Please call technical supports for assistance.
Note: This status light turns on automatically every
time when the device is power up, which is a normal
self-test procedure, and it will turn off automatically
later when the device starts working normally.
Wireless
Flash green when connected to Wi-Fi network.
Vehicle
Flash green when communicating with the vehicle’s
network.
Note: Do not disconnect while this status light is on! If
you interrupt the flash reprogramming procedure while
the vehicle’s ECU is blank or only partially programmed,
the module may be unrecoverable.
USB
Flash green when the device is properly connected and
communicating with the PC via the USB cable.
refer to Table 1 for detailed description of the status lights.
TABLE 1—STATUS LIGHTS ON THE FRONT PANEL
2) USB Port
The USB port provides the easiest connection between the device
and the PC via a USB cable, and is used to control the device from
the software application running on the PC.
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3) Ethernet Port
The Ethernet port connects the device to the PC directly or through
an existing network via an Ethernet cable, which supports longer
range and higher performance.
NOTE: There’re two status lights at the bottom corners
alongside the Ethernet Port, which illuminate when the device
is properly connected to the PC or an existing network
through the Ethernet Cable.
4) Wi-Fi Receiver
The Wi-Fi receiver, which offers higher bandwidth and distance
range, can either connect the device to the PC via the wireless
network access, or simply setup the device to serve as a wireless AP
hotspot that provides direct wireless network access for the PCs.
2.2 Rear Panel
Connections to the power adapter, vehicle, external programming
voltage, and analog inputs are available on the rear panel.
1) Power Port
The power port (DC 12V) connects the device and the power source
with the adapter, which supplies power to the reprogramming tool.
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2) OBDII Connector
Pin
Function
Direction
2
Channel 6
In 4 Channel 3
In 6 Battery Voltage
Out (200mA max)
8
Channel 4
In
10
Channel 1
In
12
Channel 5
In
14
Channel 2
In
1,3,5,7,9,
11,13,15
Ground
The OBDII connector connects the device to the vehicle’s DLC via a
standard high density DB-26 MVCI – OBDII cable.
3) External Programming Voltage Output
The external programming socket provides the user with access to
the 5-20V programming voltage. This is used for Mitsubishi, Subaru
or any other vehicle that needs voltage on an additional connector.
4) A/D Inputs
The 12-bit analog inputs are setup for an input range of 0 - 27.5VDC
and are electrically protected against reverse voltage and over
voltage conditions. The Mating connector is a High Density DB-15.
NOTE: The 3) External Programming Voltage Output and 4)
A/D Input ports are currently used for internal debugging only.
TABLE 2 – GENERAL PURPOSE ANALOG INPUTS
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2.3 Power Up
The Pass-Thru vehicle reprogramming device can be powered either via
the vehicle DLC, or the external power adapter.
Vehicle Power Supply
1) Connect the MVCI – OBDII cable to the reprogramming tool.
2) Find DLC on vehicle.
A plastic DLC cover may be found for some vehicles and you need
to remove it before plugging the OBDII cable.
3) Plug OBDII cable to the vehicle’s DLC.
4) Wait for the reprogramming tool to power up.
External DC Power Supply
1) Locate the power port of the device.
2) Connect the device and the power source with the power adapter.
3) Wait for the reprogramming tool to power up.
The external power supply is necessary for off-board
reprogramming, and since this reprogramming tool does not
receive power from the PC’s Ethernet or USB ports, it is also
needed when the device is communicating applications on the PC.
NOTE: The external power supply does not support power charging
to the vehicle battery.
2.4 Specifications
The MaxiFalsh® Pro Reprogramming Device is powerfully featured
to be desired by all OEM customers:
Supports simultaneous communication definition in J2534-1, running
3 protocols at the same time, which greatly improves reprogramming
and diagnostic speed.
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