January 2009
167-000101A
GR8-1200 OEM
Multitasking Battery and
Electrical Diagnostic Station
INSTRUCTION MANUAL
INNOVATION TECHNOLOGY QUALITY WORLDWIDE
GR8-1200 OEM
This page intentionally left blank.
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
2
www.midtronics.com
GR8-1200 OEM
Contents
Contents
Safety Guidlines 5
General Safety Precautions 5
Personal Precautions 5
Preparing To Charge The Battery 6
Grounding & Power Cord Connections 6
Charger Location 7
DC Connection Precautions 7
Installing The Battery 7
Chapter 1: Before You Begin 9
Safety Reminder 9
Safety Precautions 9
Assembling the GR8 10
Attaching the Control Module 10
Installing the Multitasker Module 11
Chapter 2: Overview 12
Front of GR8 12
Back of GR8 13
Display and Keypad 14
Data Entry Methods 15
Menu Icons 15
Option Buttons 15
Scrolling Lists 15
Main Menu 16
Alphanumeric Entry 16
Value Boxes 16
Info Menu 17
DMM Menu 17
Admin Menu 18
Multitasking 20
Wireless Multitasking 20
Procedure Summary 20
Setting User Preferences 20
Help Menu 20
Chapter 4: Test Preparation 21
Inspecting the Battery 21
Testing Out-of-Vehicle (Battery Test) 21
Testing In-Vehicle (System Test) 21
Connecting to the Battery 21
Connecting to AC Power 21
Chapter 5: Diagnostic Charging 22
Charging Modes 23
Initial Analysis 23
Deep Scan Test 23
Diagnostic Mode 23
Recovery Mode 24
Top-Off Mode 24
Aborting a Charge Session 24
Completing a Charge Session 24
Chapter 6: System Test 26
Battery Test Results 27
Starter Test 28
Starter System Test Results 28
Charging System Test 29
Charging System Test Results 29
Chapter 7: Battery Test 31
Chapter 3: Getting Started 19
Logging In for the First Time 19
Bootup 19
Selecting A Language 19
User ID 19
Adding a User 19
www.midtronics.com
Test Requirements 31
Additional Test Requirements 32
System Noise Detected 32
Unstable Battery Detected 32
Deep Scan Test 32
Battery Test Results 33
State of Health (SOH) 33
3
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
Contents
GR8-1200 OEM
Chapter 8: ECM Power Supply 34
Chapter 9: Jump Start 35
Chapter 10: Manual Charging 36
Chapter 11: Print / View Menu 38
View Test Battery 38
View Test Charger 38
View Cable Test 38
Chapter 12: Info Menu 39
Totals 39
Transfer 39
View Wireless 39
Version 39
Chapter 13: Cable Drop Test 40
Cable Drop Test 40
Battery Ground Test 40
Battery Ground Test Results 40
Starter Circuit 41
Starter Circuit Test Results 41
Alternator Circuit 41
Alternator Circuit Test Results 41
Other Circuit 42
Other Circuit Test Results 42
Chapter 15: Admin 45
Clock 45
Mode 45
Time 45
Format 45
Date 45
Entering A New User ID 45
Deleting A User ID 46
Editing A User ID 46
Shop 46
Display 47
Contrast Level 47
Coupon 47
Edit Coupon 47
Temp 48
Language 48
Format 48
Update 48
Admin 48
Options 49
Change Admin Pin 49
Clear Test Totals 49
Reset Defaults 49
Printer 49
Buzzer 49
User Screen 50
Chapter 16: Troubleshooting 51
Chapter 14: Digital Multimeter (DMM) 43
DMM 43
DC Volts 43
AC Volts 43
Scope 43
DC AMP (requires the optional amp clamp) 43
AC AMP (requires the optional amp clamp) 44
Temp 44
Ohm Meter 44
Diode 44
Volts/Amp
Multimeter Specifi cations 44
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
(requires the optional amp clamp) 44
Chapter 17: Charger Maintenance 53
Replacing the Paper Roll 53
Test Cable Maintenance 53
Attaching the Charger Cables 53
4
www.midtronics.com
GR8-1200 OEM
1 General Safety Precautions
!
Safety Guidlines
Safety Instructions
1. IMPORTANT SAFETY INSTRUCTIONS. IT IS OF UTMOST
IMPORTANCE THAT BEFORE USING YOUR CHARGER,
YOU READ THIS MANUAL AND FOLLOW THE SAFETY
AND OPERATING INSTRUCTIONS EXACTLY. SAVE THESE
INSTRUCTIONS.
Risk of explosive gases
Batteries generate explosive gases during
normal operation, and when discharged or
charged.
1.1 To reduce risk of battery explosion, follow these safety
instructions and those published by the battery manufacturer and the manufacturer of any equipment you intend to use in the vicinity of a battery. Review cautionary
marking on these products and on the engine, and on the
vehicle or equipment containing the battery.
Charging a non-rechargeable battery
may cause the battery to burst.
To reduce the risk of injury, only charge
rechargeable lead-acid type batteries including
maintenance-free, low-maintenance, or deepcycle batteries.
Remove marine “boat” batteries and
charge them on shore.
Charging marine batteries on-board requires
specially designed equipment for marine use.
1.8
Connect and disconnect the battery leads only when the
AC supply cord is disconnected.
1.9
Do not overcharge the battery. (See sections 3 and 10 in
the safety instructions)
1.10
Charge the battery in a dry, well-ventilated area.
1.11
Never place articles on or around the charger, or locate
the charger in a way that will restrict the ow of cooling
air through the cabinet.
1.12
An extension cord should not be used unless absolutely
necessary. (See paragraph 4.3.)
1.13 Have a damaged cord or plug replaced immediately.
1.14
Do not expose the charger to rain or snow.
2 Personal Precautions
2.1 Always have someone within range of your voice, or close
enough to come to your aid, when working around lead
acid batteries.
If you are uncertain as to the type of battery you are
attempting to charge, or the correct procedure for checking
the battery’s state of charge, contact the seller or battery
manufacturer.
1.2 Use of an attachment not recommended or sold by the
battery charger manufacturer may result in a risk of re,
electric shock, or injury to persons.
1.3 To reduce risk of damage to the electric plug and cord,
pull by the plug rather than by the cord when disconnecting the charger.
1.4 Position the AC and DC leads to avoid tripping over them
and to prevent damage by hood, doors, or moving engine
parts; protect from heat, oil, and sharp edges.
1.5 Do not operate the charger if it has received a sharp blow,
been dropped or otherwise damaged in any way; take it
to a quali ed service center.
1.6 Do not disassemble charger; take it to a quali ed service
center when repair is required. Incorrect reassembly may
result in a risk of electric shock or re.
1.7 To reduce risk of electric shock, unplug the charger from
the AC outlet before attempting any maintenance or
cleaning. Turning o the controls will not reduce this risk.
2.2 Have plenty of fresh water and soap nearby in case battery acid contacts skin, clothing or eyes.
2.3 Wear complete eye protection, clothing protection, and
wear rubber soled shoes. Place damp cloth over battery
to protect against acid spray. When ground is very wet or
covered with snow, wear rubber boots. Avoid touching
eyes while working near battery.
2.4 If battery acid contacts skin or clothing, wash immediately
with soap and water. If acid enters the eye, immediately
ush with cold running water for at least 10 minutes, and
seek medical attention.
2.5 NEVER smoke or allow a spark or ame in vicinity of a battery or engine.
2.6 Be extra cautious to reduce risk of dropping a metal tool
onto the battery. It might spark or short circuit the battery
or other electrical part that may cause an explosion.
2.7 Before working with a lead-acid battery, remove personal
metal items such as rings, bracelets, necklaces, watches,
etc. A lead-acid battery can produce a short circuit current
high enough to weld such items causing a severe burn.
www.midtronics.com
5
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
Safety Instructions
Non-rechargeable batteries may
burst when charging causing
personal injury and damage.
Only charge rechargeable lead-acid
maintenance-free, low-maintenance or deepcycle batteries.
GR8-1200 OEM
cal codes and ordinances.
Hazardous voltage.
An improper connection can result in
electric shock
To avoid electrical shock or burn, never alter
the charger’s original AC cord and plug. Disconnect plug from outlet when charger is idle.
The charger is not intended to supply power to a lowvoltage electrical system other than applications using
rechargeable, lead-acid type batteries. Do not use the
battery charger for charging dry-cell batteries commonly
used with home appliances. These batteries may burst
and cause personal injury and property damage.
2.9 NEVER charge a frozen battery; thaw it out rst.
3 Preparing To Charge The Battery
3.1
If it is necessary to remove the battery from vehicle to
charge it, always remove the grounded terminal from the
battery rst. Make sure all accessories in the vehicle are o ,
so as not to cause an arc.
3.2
Be sure the area around the battery is well ventilated while
the battery is being charged. Gas can be forcefully blown
away by using a piece of cardboard or other nonmetallic
material as a fan.
3.3
Clean the battery terminals. Be careful to keep corrosion from
coming into contact with your eyes.
3.4 Add distilled water in each cell until the battery acid
reaches the level speci ed by the manufacturer. This helps
purge excessive gas from the cells. Do not over ll. For a
battery without caps, carefully follow the manufacturer’s
recharging instructions
3.5 Study all battery manufacturer’s speci c precautions such
as removing or not removing cell caps while charging and
recommended rates of charge.
IF THE P LUG DOES NOT FIT THE OUTLET, HAVE A PROPER
OUTLET INSTALLED BY A QUALIFIED ELECTRICIAN.
4.2
This battery charger is for use on a nominal 120-volt circuit and has a grounding plug that looks like the plug illustrated in Figure A. A temporary adapter, which looks like
the adapter illustrated in Figures B and C, may be used to
connect this plug to a two-pole receptacle as shown in
Figure B, if a properly grounded outlet is not available. The
temporary adapter should be used only until a properly
grounded outlet can be installed by a quali ed electrician.
Hazardous voltage.
An improper connection can result in
electric shock
Before using an adapter be certain the center
screw of the outlet plate is grounded. The rigid
ear or lug extending from the adapter must be
connected to a properly grounded outlet. Make
certain it is grounded. If necessary, replace the
original screw that secures the adapter ear or
lug to the cover plate and make the ground
connection to the grounded outlet.
USE OF AN ADAPTER IS NOT ALLOWED IN CANADA. IF A
GROUNDING-TYPE RECEPTACLE IS NOT AVAILABLE, DO
NOT USE THIS APPLIANCE UNTIL THE PROPER OUTLET IS
INSTALLED BY A QUALIFIED ELECTRICIAN.
3.6 Determine the voltage of the battery by referring to the
car owner’s manual and make sure that the output voltage
selector switch is set at the correct voltage. If the charger
has an adjustable charge rate, charge the battery initially
at lowest rate. If the charger has only one voltage, verify
that the battery voltage matches the voltage of charger.
For a charger not having an output voltage selector
switch, determine the voltage of the battery by referring
to car owner’s manual and make sure it matches the
output rating of the battery charger.
4. Grounding & Power Cord Connections
4.1 The charger must be grounded to reduce risk of electric
shock. The charger is equipped with an electric cord having an equipment grounding conductor and a grounding plug. The plug must be plugged into an outlet that is
properly installed and grounded in accordance with all lo-
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
4.3 An extension cord should not be used unless absolutely
necessary. Use of an improper extension cord could result
in a risk of re and electric shock. If an extension cord must
be used, make sure:
a. that the pins on plugs of the extension cord are the
same number, size, and shape as those of the plug on
the charger;
b. that the extension cord is properly wired and in good
electrical condition;
c. that the wire size is large enough for the AC ampere
rating of charger as speci ed in the following table.
6
www.midtronics.com
GR8-1200 OEM
Equal or greater than: But less than:
*American Wire Gauge
Safety Instructions
Table 1: Recommended minimum AWG* size for extension cords for battery chargers
AC input rating amperes AWG* size of cord
Length of cord, feet (m)
25
(7.6)
8 10 18141210
10 12 16 14 10 8
12 14 16 12 10 8
14 16 16 12 10 8
16 18 14 12 8 8
50
(15.2)
100
(30.5)
150
(45.6)
5. Charger Location
5.1 Locate the charger as far away from the battery as the
charger cables permit.
5.2 Never place the charger directly above the battery being
charged; gases from the battery will corrode and damage
the charger.
5.3 Never allow battery acid to drip on the charger when taking gravity readings or lling a battery.
5.4 Operate the charger only in a well-ventilated area that is
free of dangerous vapors.
5.5 Store the charger in safe, dry location and maintain it in
perfect condition.
5.6 Do not set the battery on top of the charger or where its
acid might drip onto the charger.
6. DC Connection Precautions
6.1
All switches should be set in the OFF position and AC cord
should be DISCONNECTED from electrical outlet before you
connect and disconnect the charger clamps. Never allow the
clamps to touch each other.
6.2 When attaching the charger clamps, be certain to make
the best possible mechanical as well as electrical connection. This will tend to prevent the clamps from slipping o
the connections, avoid dangerous sparking, and assure
safer and more e cient charging. The clamps should be
kept clean.
7. Installing The Battery
Risk of explosive gases
A spark near the battery may cause a battery
explosion. Follow these steps when the battery
is installed in the vehicle to reduce the risk of
explosion.
7.1 Before working on the vehicle, rmly apply the emergency brake and place the gear shift to NEUTRAL—shift an
automatic transmission to PARK.
7.2 Locate the charger as far away from the battery as the
charger cords permit and position the AC and DC cords to
avoid stepping on or tripping over them and to prevent
damage by hood, doors, or moving engine parts.
7.3 Stay clear of fan blades, belts, pulleys, and any other parts
that can cause physical injury.
7.4 Turn OFF all vehicle loads, including door lights, and cor-
rect any defects in the vehicle’s electrical system that may
have caused low battery.
7.5 Check the polarity of the battery posts. The POSITIVE
(POS., P, +) post usually has a larger diameter than the
NEGATIVE (NEG., N,–) post.
7.6 Determine which post of the battery is grounded (connected) to the chassis. If the negative post is grounded (as in most
vehicles), see paragraph 7.7. If the positive post is grounded,
see paragraph 7.8.
www.midtronics.com
Hazardous voltage.
Can cause death or serious
personal injury.
Setting the switches to “OFF” does
not always disconnect the charger
electrical circuit from the AC power
cord or the DC charger clamps.
7.7 For a negative-grounded vehicle, rst connect the POSI-
TIVE (RED) clamp from the charger to the POSITIVE
(POS., P, +) ungrounded post of the battery. Then connect
the NEGATIVE (BLACK) clamp to the NEGATIVE (NEG.,
N,–) post of the battery. Do not connect the clamp to the
carburetor, fuel lines, or sheet-metal body parts. When
disconnecting the charger, turn all switches to OFF, dis-
connect the AC cord, remove the clamp from the NEGA-
TIVE battery terminal, and then remove the clamp from
the POSITIVE battery terminal.
7
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
Safety Instructions
GR8-1200 OEM
7.8 For positive-grounded vehicle, connect the NEGATIVE
(BLACK) clamp from the charger to the NEGATIVE (NEG.,
N, –) ungrounded post of battery. Then connect the POSI-
TIVE (RED) clamp to the POSITIVE (POS., P, +) post of the
battery. Do not connect clamp to carburetor, fuel lines, or
sheet-metal body parts.
When disconnecting the charger, turn the switches to
OFF, disconnect the AC cord, remove the clamp from the
POSITIVE battery terminal, and then remove the clamp
from the NEGATIVE battery terminal.
CAUTION: WHEN POSITIVE (+) PO ST OF VEHICLE
BATTERY IS GROUNDED, DOUBLE CHECK POLARITY.
8. If it is necessary to remove the battery from the vehicle or
equipment, always remove the grounded terminal from
the battery rst.
Risk of explosive gases
A spark near the battery may cause a battery
explosion. Follow these steps when the battery
is installed in the vehicle to reduce the risk of
explosion.
8.1
Check the polarity of battery posts. POSITIVE (POS., P, +)
post usually has larger diameter than NEGATIVE (NEG.,
N, –) post.
8.2 Attach at least a 60 cm (24-inch), 6-gauge insulated battery
cable to the negative (–) battery terminal.
8.3 Connect the POSITIVE (RED) charger clamp to the POSI-
TIVE (POS., P, +) post of battery.
8.4 Position yourself and the free end of cable as far away from
the battery as possible—do not face the battery when
making the nal connection—then connect the NEGA-
TIVE (BLACK) charger clamp to the free end of the cable.
8.5 When disconnecting the charger, always do so in the reverse sequence of the connecting procedure; break the
rst connection while staying as far away from the battery
as practical.
8.6 MARINE “BOAT” BATTERIES MUST BE REMOVED AND
CHARGED ON SHORE. TO SAFELY CHARGE THEM ON
BOARD REQUIRES EQUIPMENT ESPECIALLY DESIGNED
FOR MARINE USE.
WARNING: Make sure all vehicle loads are OFF to prevent a
possible arc.
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
8
www.midtronics.com
GR8-1200 OEM
Chapter 1: Before You Begin
Chapter 1: Before You Begin
!
Safety Reminder
For safe, e cient, and accurate charging and testing, review
the safety and operating instructions in this manual before
using the analyzer. In addition, follow all manufacturers’
instructions and BCI (Battery Council International) safety
recommendations.
!
Safety Precautions
Inspect the battery for damages and check the electrolyte level.
If the electrolyte level is too low, replenish it and fully charge
the battery. Always use the necessary safety precautions when
working with batteries to prevent severe injury or death.
Follow all manufacturers’ instructions and BCI (Battery Council
International) safety recommendations, which include the
following precautions:
DANGER—RISK OF EXPLOSIVE GASES: Batteries can pro-
duce a highly explosive mix of hydrogen gas and oxygen,
even when the battery is not in operation. Always work in a
well-ventilated area. Never smoke or allow a spark or ame
in the vicinity of a battery.
WARNING—REQUIRED BY CALIFORNIA PROP. 65: Bat-
tery posts, terminals, and related accessories contain lead
and lead compounds, chemicals known to the state of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling.
Battery acid is highly corrosive. If acid enters your eyes, im-
mediately ush them thoroughly with cold running water
for at least 15 minutes and seek medical attention. If battery acid gets on your skin or clothing, wash immediately
with a mixture of water and baking soda.
Always wear proper safety glasses or face shield when
working with or around batteries.
Keep hair, hands, and clothing as well as the analyzer cords
and cables away from moving engine parts.
Remove any jewelry or watches before you start servicing
the battery.
Use caution when working with metallic tools to prevent
sparks or short circuits.
Never lean over a battery when testing, charging, or jump
starting.
Never charge a frozen battery. Gases may form, cracking
the case, and spray out battery acid.
www.midtronics.com
9
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
Chapter 1: Before You Begin
Conventions Used in This Manual
To help you learn how to use your GR8, the manual uses these symbols and typographical conventions:
Table 2: Symbols And Typographical Conventions
Convention
The safety symbol indicates instructions for avoiding hazardous conditions and personal injury.
Description
!
GR8-1200 OEM
CAUTION
UP ARROW
CAPITAL LETTERS The text for screen options are in regular capital letters.
BACK ARROW
The word CAUTION indicates instructions for avoiding equipment damage.
The wrench symbol indicates procedural notes and helpful information.
The text for keypad buttons are in Bold capital letters.
The text for soft keys are in Bold capital letters.
Assembling the GR8
The GR8 is shipped with the control module and mounting
bracket
packed separately. For easy assembly, follow these
steps:
Attaching the Control Module
1. The hardware to attach the control module’s mounting
bracket to the GR8 is installed on the top of the charger.
There are three bolts with one at washer, one lock washer, and one hex nut per bolt. Remove the washers and hex
nuts, and set them aside.
2. Center the three holes in mounting bracket over the bolts,
and lower the bracket onto the charger. Reinstall the hardware in this order: the at washer rst, the lock washer
next, and the hex nut last. Tighten the nuts securely.
One of three
pre-installed
bolts for the
control module
mounting
bracket.
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
10
One of four pre-installed bolts
on the bracket for mounting the
control module.
www.midtronics.com
GR8-1200 OEM
3. Center the holes on the bottom of the control module
with the bolts, and lower the module onto the top of the
bracket. Firmly pull the module down at an angle until the
bolts are inserted securely into the slots extending from
the module’s holes.
Installing the Multitasker Module
The GR8-1200 comes with a bracket to hold the multitasker
module.
1. Place the multitasker module in the bracket. Connect a
serial cable between port B of the multitasker and the
cart.
Charge
Port B
Cart
Chapter 1: Before You Begin
2. Connect a serial cable between the control module and
port A of the multitasker.
Control
Module
Port A
www.midtronics.com
11
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
Chapter 2: Overview
Chapter 2: Overview
Front of GR8
The controls to the GR8 are accessible on the front of the
charger: the control module (user interface) and the ON/OFF
switch.
GR8-1200 OEM
Control module
n
Backlit graphical display and
keypad for data entry.
Multitasker module
o
Dual connectors for testing more
than one battery simultaneously.
ON/OFF switch
p
Turns power on and off to the
GR8.
STAT U S light
q
Lights in conjunction with beeping
alarm to indicate transitions and
warnings
Data card slot
r
For future upgrades via a data card.
The slot contains a plastic filler
card for protection.
.
5
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
12
www.midtronics.com
GR8-1200 OEM
Back of GR8
In addition to containing the outlets for the charger cables and
power cord, the back of the GR8 is the location for the serial
numbers for the charger engine and the control module. Both
numbers are necessary for warranty registration.
3
Chapter 2: Overview
Serial number label
n
(for control module)
System test cable connector
o
Cable wrap
p
For storing cables when not in use.
Storage shelf
q
Charger cable connectors
5
7
r
Serial number label
s
(for charger engine)
AC power cord
t
Connection to grounded nominal
120 V outlet.
www.midtronics.com
13
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
Chapter 2: Overview
Display and Keypad
The GR8 display and keypad work together to help you
quickly nd and use the right tools at the right time. The
y also keeps you on track with onscreen navigation
displa
aids, directions and messages. The illustration shows how the
elements on the screen relate to the keypad.
GR8-1200 OEM
ARROW keys
p
Press the ARROW keys to scroll to numerical values
and move to menus and icons
POWER Key
q
Press the POWER key to turn the control module ON
and OFF
Voltmeter
n
When you first connect the GR8 to a battery it
functions as a voltmeter. The voltage reading appears
above the left soft key until you move to other menus
or functions.
Soft Keys
o
Press the two soft keys linked to the bottom of the
screen to perform the functions displayed above
them. The functions change depending on the menu
or test process. So it may be helpful to think of the
words appearing above them as part of the keys.
Title Bar
r
The title bar shows you the name of the current menu,
test tool, utility, or function.
Selection Area
s
The selection area below the Title Bar contains
selectable items or dialog boxes that display
information or require a response.
Menu Screen Arrows
t
When displayed in menu screens, the menu screen
arrows show you which ARROW key on the keypad
to press to display other icons or screens. The Up and
Down Menu Screen Arrows, for example, indicate
when to press the UP or DOWN ARROW keys to display
the screens above and below the current screen.
he Left and Right Menu Screen Arrows tell you when
T
to use the LEFT
select an icon.
When displayed under a list of options, the menu
screen arrows show you which keypad arrow to press
to highlight a character or item in a list.
( )
or RIGHT
( )
ARROW keys to
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
14
www.midtronics.com
GR8-1200 OEM
Chapter 2: Overview
Scroll Bar
u
Another navigational aid is the scroll bar on the right side of
the screen. The position of its scroll box shows you whether the
screen is the top (or only screen), middle, or last in a series.
Some screens also indicate the page order with a notation
such as P1/3 (page 1 of 3).
Scroll
Box
Top or
only
screen
Alphanumeric Keypad
v
Middle
screen
Last
screen
In some cases, you can use the alphanumeric keypad to enter
numerical test parameters instead of scrolling to them with
the ARROW keys.
You can also use the alphanumeric keys to create and edit
customer coupons and your shop contact information on
printed test results, and manage User IDs.
To add a space, press the RIGHT ARROW key. To erase a space
and insert a character, press the LEFT ARROW key.
Refer to the table below for the characters associated with
each alphanumeric key.
Table 3: Alphanumeric Keys and Associated Characters
Key Character
1 $ - ( ) 1
Data Entry Methods
To perform a particular test or function, the GR8 requires
di erent types of information. This means that the methods
you use to enter information will change depending on the
type of information requested. The six types of entry methods
are described below.
Typically, the soft key below the right half of the screen
con rms your choice, although the command above it may
vary. (Examples: SELECT, NEXT, and SAVE .) In a similar
fashion, the soft key below the left half of the screen cancels
your choice or returns you to the previous screen, although the
word above it may also vary. (Examples: BACK and CLEAR.)
Menu Icons
A menu icon is a graphical
representation of a
function you can select,
such as the Diode Icon in
the DMM Menu. To select
an icon, use the LEFT or
RIGHT ARROW key to
highlight it. Highlighting changes the icon to a white picture
on a black background. To con rm your selection, press the
appropriate soft key.
Option Buttons
Some lists have option
buttons before each item.
To select an item, use the
UP or DOWN ARROW keys
to move the dot to the
button next to the item.
To con rm your selection,
press the appropriate soft key.
You can also use the alphanumeric keypad to enter the
number preceding the option button of your choice. No
additional keypress is needed to proceed.
www.midtronics.com
2 a b c 2
3 d e f 3
4 g h i 4
5 j k l 5
6 m n o 6
7 p q r s 7
8 t u v 8
9 w x y z 9
0 % , . # 0
Scrolling Lists
Scrolling lists contain items
that extend above and
below the screen. The
first number above the
right soft key indicates
the position in the list of
the highlighted item. The
second number above the right soft key indicates the number
of items in the list.
To select an item, the UP or DOWN ARROW key to highlight the
item, and press the appropriate soft key.
To move the highlight bar up five lines at a time, press the
LEFT
(W)
a time,
15
ARROW.
press the
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
To
move the highlight bar down ve lines at
RIGHT
(X)
ARROW key.
Chapter 2: Overview
GR8-1200 OEM
Alphanumeric Entry
Some selections require you
to use the alphanumeric
keypad. These “user-de ned”
selections have a blinking
horizontal line (cursor) to the
right of the last character.
Use the UP or DOWN ARROW keys to highlight a line for
editing. Display the character, symbol, or number you want
by rapidly pressing its key as many times as needed. If you
pause, the cursor moves to the right. To backspace, press the
LEFT
(W)
ARROW
key. Use the RIGHT ARROW key to add a
space. Use the UP or DOWN ARROW keys to highlight a line for
Value Boxes
Value boxes contain items
that extend above and
below the selection box that
contain them. To indicate
that there are more values,
the symbols appear to
the right of the box.
To select, use the UP or DOWN ARROW key to scroll to the
value, or use the keypad to enter the value directly, and press
the appropriate soft key. In the illustration the left directional
arrow indicates that you can press the
LEFT
(W)
ARROW key
to
clear all or part of the entry.)
editing. When nished, press the appropriate soft key to save
your settings.
Main Menu
The Main Menu is the starting point for all tools and utilities, which are depicted as icons. Some icons lead directly to the function
they represent, while others are menu icons that lead to two or more options.
Table 4: Main Menu Icons
Menu Icon Description
Automatically tests, charges, and provides battery decision using the
information you select in a series of screens.
Tests a battery, and the starting and charging systems.
Required test leads
Battery
test
clamps
Large
clamps
DMM
clamps or
probes
Tests a battery using the battery information you select in a series of
screens.
Tests and maintains battery voltage at 13.5 volts to provide uninterrupted
reprogramming of ECMs and retain vehicle system settings.
Makes high output current available to boost charge an in-vehicle battery
and assist in starting the engine.
Provides a timed charge that ranges from 5 to 120 minutes or a
continuous charge that ends when you press the STOP key.
Prints and displays the results of the last battery, starter, and electrical
*
system test; a test stored on the data card; the last cable drop test; and
the last inventory test.
Includes a utility to view and print test results, a total test counter, a data
*
transfer utility, and the software version and date, and GR8 serial number
for the control module.
Test the voltage drop of circuits.
Digital multimeter with 8 test meters, a temperature sensor, and options
*
for clamps and probes.
Includes fourteen utilities, many of which customize your user interface.
*
Provides a list of topics and defi nitions. Also includes Midtronics Customer
Service phone numbers.
*Menu icons marked with an asterisk (*) are mapped on the following pages.
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
16
www.midtronics.com
GR8-1200 OEM
Chapter 2: Overview
Print/View Menu
Allows you to view and print battery results.
Table 5: Print/View Icons
Menu Icon Description
Displays the last Battery results. Sends the
results to the printer.
Displays the last Charger results. Sends the
results to the printer.
Displays the last Cable Drop Test result.
Sends the result to the printer.
DMM Menu
The DMM menu
has icons for a temperature sensor and 9 test meters, some of which require di erent test leads. The
amp clamp, DMM clamps, and probes are options that you can purchase separately.
Table 7: DMM Menu Icons
Info Menu
The Info menu allows you to select Totals, Transfer
results and view Software Version information.
Table 6: Info Menu Icons
Menu Icon Description
Display total results from the tester or charger.
Transfers test results and counters to an IR
receiver and data card.
Displays wireless communication quality and
channel being used.
Lists the software version, version date, and
serial number.
Menu Icon Description
Measures voltage within a range of 0 to 60 Vdc.
Measures voltage within a range of 0 to 24 Vac.
Voltage trace with time and frequency measurements.
Tests the strength of the direct current fl ow through a circuit.
Tests the strength of the alternating current fl ow through a circuit.
Sensor that displays temperature in degrees F or C (units you can select
in the Utilities Menu.)
Tests a circuit for continuity and resistance measured in ohms (Ω).
Tests a diode for forward voltage drop.
Measures two signals simultaneously: DC voltage and amperage.
www.midtronics.com
17
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
Chapter 2: Overview
Admin Menu
The Admin Menu lets you customize your analyzer to suit your needs. Before testing, check default values to see what
options you may want to change.
Table 7: Admin Men Icons
Menu Icon Description
Settings to adjust the time.
Enables you to add a custom header to printed test results.
Add, edit, or delete User IDs.
Settings to adjust the screen contrast and backlight time.
If you’ve created a coupon in the Edit Coupon utility, use Coupon to turn it
on and off.
GR8-1200 OEM
Enables you to create a coupon at the bottom of printed test results.
Allows you to select degrees in C or F for temperature measurements.
Sets the language of the display and printouts.
Formats the data card to receive data. Also erases all data on the card.
Updates the GR8 software using fi les on an data card.
Offers additional administration options such as showing the user ID and
headers for printouts.
Select between internal or IR external printer.
Allows you to turn the buzzer OFF. Default is ON.
User-defi ned questions with the answers stored in data fi les on the data
card.
Scans for interference and recommends the best channel for wireless
communication.
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
18
www.midtronics.com
GR8-1200 OEM
2. JOHN
Chapter 3: Getting Started
Chapter 3: Getting Started
The instructions in this section will help you quickly put your
GR8 to work.
Logging In for the First Time
Bootup
When you turn on the GR8, it will initially show the GR8-1200
logo. Screen may take up to ten seconds to boot up while
testing the internal software integrity.
Selecting A Language
After the logo appears, the rst selection screen to appear
enables you to temporarily set the language for the display
and printed test results.
Use the UP or DOWN ARROW, or press the corresponding
numerical key to move the dot to the option button of your
choice.
1 ENGLISH
2 ESPAÑOL
3 FRANÇAIS
Press the NEXT soft key to continue.
Adding a User
1. Use the DOWN ARROW key to scroll to ADD USER. Press
the NEXT soft key to continue.
0 UNREG
1 ADD USER
2. Use the UP or DOWN ARROW key to scroll to the ID placeholder you want to use. Scrolling past the rst line displays
the previous screen. Scrolling past the fourth line displays
the next screen. To display more placeholders, continue
scrolling or use the LEFT or RIGHT ARROW key to jump
up or down through the list ve lines at a time. Press the
NEXT soft key to continue.
1 USER01
2 USER02
3 USER03
4 USER04
3. To clear the default characters, press the LEFT ARROW
key. To add a space, move the cursor forward by pressing
the RIGHT ARROW key.
ENTER USER ID
USER01
4. Display a character by pressing UP or DOWN ARROW key
as many times as needed. Press the SAVE soft key.
User ID
This function enables you to select the user name of the
person performing the tests. Up to 50 user names can be
created and stored.
1. ADD USER
2. JOHN
3. TOM
Press the NEXT soft key to begin testing.
NOTE: The BACK option is only available when
the charger is used for the rst time.
ENTER USER ID
WILL S
Do not connect both sets of clamps to the
same battery at the same time.
Connecting both sets of clamps to the same battery at the same time may damage the GR8.
www.midtronics.com
19
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
Chapter 3: Getting Started
GR8-1200 OEM
Setting User Preferences
Before starting your test you may want to customize the use
of your GR8 by setting preferences in the Admin Menu. The
menu has settings for the time, the contrast and backlight
time, a utility to customize printouts for the optional IR printer,
among others. The admin utilities are described in Chapter 15
on page 40.
Multitasking
The GR8-1200 Multitasking Battery Diagnostic Station is
capable of doing two jobs at once. Historically a charger or
tester could only perform one function at a time. The GR81200 Multitasking Battery Diagnostic Station has the ability to
charge or test the battery and the electrical system of a vehicle
independently while a second battery is being charged.
Wireless Multitasking
The Multitasker communicates with the control module
using RF radio signals. Once a charge session has begun,
the control module can be disconnected and removed to
test another vehicle in the service bay—thus, acting as two
tools in one. The Multitasker will control the charge session
when the control module is removed. The charge session can
be monitored with the control module even when it is not
connected however, internal AA battery life will be reduced.
Long-term monitoring of a charge session should be done
while connected to the Multitasker.
Help Menu
The GR8 provides a Help Menu with a glossary of
test-related de nitions that you may want to review prior to testing.
This menu also provides troubleshooting information and
phone numbers for Midtronics Customer Service, in case you
encounter a problem and/or need technical assistance.
Select the HELP icon from the Main Menu.
Procedure Summary
The best way to utilize the multitasking feature is to rst test
a battery using the system test and the associated battery test
cable that comes from the top of the controller (See Chapter
7 for detailed System Test instructions). If the test decision for
the battery is one that requires a charge then the controller
will ask you if you want to charge the battery.
Select CONTINUE, swap out the tester cables for the charging
cables, and the controller will now analyze the battery for
the optimal charging conditions. See Chapter 6 for detailed
Diagnostic Charging instructions. Once the charge process
has started you can go back to the main menu and continue to
run system tests while the charger is charging.
Starting with the battery test is recommended so that a good
battery decision can quickly be reached. While the charger can
also be used and will reach the same decision, it is designed to
determine the optimum charging method for a battery and
therefore will take longer before reaching a decision. The
same holds true for a bad cell or other physical aws that will
cause a replace battery decision.
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
20
www.midtronics.com
GR8-1200 OEM
Chapter 4: Test Preparation
Chapter 4: Test Preparation
Inspecting the Battery
Before starting the test visually inspect the battery for:
• Cracked, buckled, or leaking case. If you see any of these
defects, replace the battery.
• Corroded, loose, or damaged cables and connections. Repair or replace them as needed.
• Corrosion on the battery terminals, and dirt or acid on the
case top. Clean the case and terminals using a wire brush
and a mixture of water and baking soda.
• Low electrolyte level. If the electrolyte level is too low, add
distilled water to ll up to 1/2 above the top of the plates
and fully charge the battery. Do not over ll.
• Corroded or loose battery tray and hold-down xture.
Tighten or replace as needed.
Testing Out-of-Vehicle (Battery Test)
The preferred battery test location is in the vehicle. However, if
you plan to test out of the vehicle:
• Always disconnect the negative cable from the battery
rst and reconnect it last.
• Always use a carry tool or strap to lift and transport the
battery.
CAUTION: When testing side-post or Group 31
batteries, always use lead terminal adapters provided with the GR8—do not test at the battery’s
steel bolts. To avoid damage, never use a wrench
to tighten the adapters more than 1/4 turn. Failure to properly install lead terminal adapters, or
using adapters that are dirty or worn, may cause
false test results.
Testing In-Vehicle (System Test)
Before starting the test, inspect the alternator drive belt. A belt
that is glazed or worn, or lacks the proper tension, will prevent
the engine from achieving the rpm levels needed for the test.
The preferred test position is at the battery posts. If you must
test at a remote-post location, it should have both a positive
and negative post. Otherwise, you must remove the battery
and perform a System Test.
At the start of the test, place the vehicle transmission in PARK,
make sure all vehicle accessory loads are o , the key is not in
the ignition, and the doors are closed.
Connecting to the Battery
Connect the charging clamps to the battery in accordance
with all precautions and safety instructions. Do not connect
either clamp to the vehicle’s chassis.
Connect the red clamp to the positive (+) terminal and the
black clamp to the negative (–) terminal.
If you connect the clamps in the wrong polarity (red to
negative or black to positive), the analyzer sounds an alarm
and displays CLAMPS REVERSED! Reconnect the clamps.
To make sure both sides of the clamps are gripping
the terminals, rock the each clamp back and forth.
A poor connection will prevent testing, and the analyzer
displays the message CHECK CONNECTION. If the message
reappears after you have correctly reconnected the clamps,
clean the terminals and reconnect.
Connecting to AC Power
Plug the charger into a dedicated, grounded nominal 15-amp
or higher AC outlet. Press the power switch to the ON position.
www.midtronics.com
21
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
Chapter 5: Diagnostic Charging
GR8-1200 OEM
Chapter 5: Diagnostic Charging
The GR8-1200 battery analyzer and diagnostic
charger will determine the internal condition of a
battery before attempting to apply a charge to it.
The charger applies an AC signal at a known frequency across
the terminals and measures the internal conductance to
determine battery health before attempting to charge.
NOTE: When you start a new test, the last test
results in memory are overwritten. Remember
to record or print the results if you need to retain
them.
IMPORTANT
Only the large clamps from the GR8 charge engine
should be connected to the battery terminals when
performing diagnostic charging.
Before performing a diagnostic charge on a battery installed in
a vehicle, make sure all vehicle accessory loads are o , the key
is not in the ignition, and the doors are closed.
1. In the Main Menu, highlight the DIAGNOSTIC icon and
press the SELECT key.
4. Use the UP or DOWN ARROW key to select the battery
POST TYPE.
1 TOP POST
2 SIDE POST
The BACK soft key returns you to the Main Menu at
the start of the test and to the previous screen as you
progress.
5. Select the BATTERY TYPE.
1 REGULAR/FLOODED
2 AGM
3 AGM SPIRAL
Press the NEXT soft key to continue.
6. Select the battery’s rating units. The rating units and rating information required in the next step are printed on
the battery label. If the information is unreadable, contact
the battery manufacturer.
1 CCA
2. Use the UP or DOWN ARROW key to select the battery LOCATION, or press the corresponding numerical key (1 or 2)
to move the dot to the option button of your choice.
1. IN VEHICLE
2 OUT OF VEHICLE
3. Use the UP or DOWN ARROW key to make your selections or
press the corresponding numerical key (1 or 2).
1 BELOW 250 MILES
2 ABOVE 250 MILES
NOTE: To display Kilometers, change the temper-
ature default to DEGREES C. Select ADMIN / TEMP
from the Main Menu to access this setting
2 CA
3 JIS
4 DIN
5 SAE
6 IEC
7 EN
8 MCA
If you select JIS, the analyzer will ask for the JIS part
number. Scroll to the part number. To increase your
scrolling speed, hold the UP or DOWN ARROW key, or use
the LEFT or RIGHT ARROW key to move up or down four
part numbers at a time. Press ENTER to continue.
Press the NEXT soft key to continue.
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
22
www.midtronics.com
GR8-1200 OEM
Chapter 5: Diagnostic Charging
Table 8: Battery Ratings
Ratings Description Range
Cold Cranking Amps (specifi ed
CCA
CA
JIS
DIN (A) Deutsche Industrie-Norm 100 to 1000
SAE (A) European labeling of CCA 100 to 3000
IEC (A)
EN (A) Europa-Norm 100 to 1700
MCA
by SAE): The amount of current
a battery can provide at 0 ºF
(–17.8 ºC).
Cranking Amps: The amount of
current a battery can provide at
32°F (0 ºC).
Japanese Industrial Standard:
(shown on a battery as a
combination of numbers and
letters.
International Electrotechnical
Commission
Marine Cranking Amps: The
amount of current a battery can
provide at 32°F (0 ºC).
100 to 3000
100 to 3000
72 numbers
from 26A17
to 245H52
100 to 1000
100 to 3000
7. Press an UP or DOWN ARROW key to select the BATTERY
RATING. Press ENTER.
? CCA
If you select JIS, the analyzer will ask for the JIS part
number. Scroll to the part number. To increase your
scrolling speed, hold the UP or DOWN ARROW key, or use
the LEFT or RIGHT ARROW key to move up or down four
part numbers at a time. Press ENTER to continue.
Charging Modes
Diagnostic Charging has four modes (Initial Analysis, Diagnostic
Mode, Recovery Mode, Top-O Mode) that the GR8 may use to
determine the State-of-Health of the battery while bringing it
to a full State-of-Charge.
Deep Scan Test
In some cases the GR8 may need to further analyze the battery
to determine whether the battery should be replaced or it has
a signi cant chance to be recovered. It will then conduct a
Deep Scan Test of the battery for a few seconds.
After the Deep Scan Test the GR8 will either display the results
or give you the option to perform the 5-Minute Discharged
Battery Test. Although this test takes several minutes, it gives
a more precise result for di cult-to-diagnose batteries. The
decision tree of the test is shown below.
Diagnostic Mode
Once the GR8 determines that the battery is good, needs
charging, and is safe to charge, it proceeds to Diagnostic
Charge Mode. During the charging session, the GR8 provides
updates of the charging voltage, charging current, remaining
time to charge, charging mode, and the amount of charge
replenished into the battery in amp-hours. The GR8 continues
to test the battery throughout Diagnostic Mode and may
determine at some point that the battery needs to be
replaced.
NOTE: The actual time needed to charge the bat-
tery may be less than the estimated time depending on the battery’s charge acceptance.
When the battery requires testing, the display alternates
between the CHARGING and TESTING screens. The TESTING
screens represent a two-step process.
Step 1: The GR8 applies an electrical load and tests the bat-
tery’s response.
Initial Analysis
The GR8 first analyzes the battery and makes a decision:
GOOD BATTERY, REPLACE BATTERY, or REPLACE-BAD CELL.
For
diagnostic charge analysis, progress is shown by the left to
right movement of a progress bar.
www.midtronics.com
Step 2: The GR8 measures the battery’s CCA.
.
23
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
Chapter 5: Diagnostic Charging
GR8-1200 OEM
Recovery Mode
In some cases the GR8 goes into Recovery Mode before displaying the nal results. Recovery Mode optimizes the charge
for a hard-to-charge battery.
The maximum charge time in Recovery Mode is 1.5 hrs for
customer vehicles and 3 hrs for dealer vehicles, although
most batteries will nish charging sooner. During Recovery
Mode the charger continuously analyzes the battery to make a
decision as quickly as possible.
Top-Off Mode
Following the Diagnostic Charge Mode process the GR8 will
prompt you to stop the process or continue on in Top-O
Mode. After two minutes the GR8 will automatically enter TopO mode if there is no user input
If charging at the side posts or jump start posts and the test
data is inconclusive, the GR8 displays the decision JUMP
START POST or SIDE POST TEST. A JUMP START POST decision
prompts you to test at the battery. A SIDE POST TEST decision
prompts you to test using the side post adapters.
When the decision is GOOD BATTERY, the GR8 gives you
the option of topping o the battery’s charge level before it
displays the results.
Diagnostic Charge Results
Use the UP or DOWN ARROW keys to scroll to each screen. To
return to the Main Menu, press the EXIT soft key. To print, press
the PRINT soft key.
Screen 1 of 3
Measured
Battery
decision
Maximum
Charging Time
Replaced
AMP Hours
voltage
Measured
capacity
Selected
rating
This mode occurs automatically at the end of the charge cycle
to allow the charger to ll a good battery to capacity. TopO Mode ends when the battery’s acceptance of the charge
current goes below 2 amps, or when you press the STOP
button.
Aborting a Charge Session
If you need to abort the charging session, press and hold the
STOP key until the charging session is aborted. After aborting,
select NEXT to return to the Main Menu.
Completing a Charge Session
The charge session is complete when the proper amount of
charge is put back into the battery or the remaining estimated
time to charge counts down to zero.
If the GR8 nds that the battery is bad before the end of the
estimated time to charge, it displays the decision REPLACE
BATTERY or BAD CELL-REPLACE and the results.
Screen 2 of 3
Replace
Range
Screen 3 of 3
Good
Range
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
24
www.midtronics.com
GR8-1200 OEM
Table 9: Battery Decisions: Diagnostic Charge
Decision Recommended Action
GOOD BATTERY Return the battery to service.
Chapter 5: Diagnostic Charging
REPLACE BATTERY A REPLACE BATTERY result may also mean a poor connection between the battery and the vehicle. If
BAD CELL–REPLACE Replace the battery.
you tested the battery using the System test, disconnect the battery cables and retest using the Battery
Test before replacing it.
WARNING: Do not charge the battery. Charging a battery with one or more bad cells could
cause an explosion and serious harm to the user.
www.midtronics.com
25
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
Chapter 6: System Test
GR8-1200 OEM
Chapter 6: System Test
The GR8 guides you through the steps of selecting
your battery test parameters and interpreting the
results. Before you start the test, review the instructions in Chapter 4: Test Preparation on page 21.
NOTE: When you start a new test, the last test re-
sults in memory are overwritten. Remember to record or print the results if you need to retain them.
IMPORTANT
Only the small clamps from the GR8 charge engine
should be connected to the battery terminals when
performing System Test.
If you use the ARROW keys to select option buttons, press the
NEXT soft key to continue to the next step.
1. In the Main Menu select the System Test icon.
2. Use the UP or DOWN ARROW key to select the battery LO-
CATION, or press the corresponding numerical key (1 or 2)
to move the dot to the option button of your choice.
5. Use the UP or DOWN ARROW key to select the battery
POST TYPE. The JUMP START POST appears for the IN VEHICLE test only.
1 TOP POST
2 SIDE POST
3 JUMP START POST
The BACK soft key returns you to the Main Menu at
the start of the test and to the previous screen as you
progress.
6. Select the BATTERY TYPE.
1 REGULAR/FLOODED
2 AGM
3 AGM SPIRAL
Press the NEXT soft key to continue.
7. Select the battery’s rating units. The rating units and rating information required in the next step are printed on
the battery label. If the information is unreadable, contact
the battery manufacturer.
1 CCA
2 CA
1. IN VEHICLE
2 OUT OF VEHICLE
3. If you using the AMP CLAMP option, select AVAILABLE. If
you are not using the AMP CLAMP, select NOT AVAILABLE.
1 AVAILABLE
2 NOT AVAILABLE
If you are using the amp clamp, plug it into the Control
Module and follow the procedure for setting it to zero.
4. Use the UP or DOWN ARROW key to make your selections or
press the corresponding numerical key (1 or 2).
1 BELOW 250 MILES
2 ABOVE 250 MILES
NOTE: To display Kilometers, change the temper-
ature default to DEGREES C. Select ADMIN / TEMP
from the Main Menu to access this setting.
3 JIS
4 DIN
5 SAE
6 IEC
7 EN
8 MCA
If you select JIS, the analyzer will ask for the JIS part
number. Scroll to the part number. To increase your
scrolling speed, hold the UP or DOWN ARROW key, or use
the LEFT or RIGHT ARROW key to move up or down four
part numbers at a time.
Press the NEXT soft key to continue.
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
26
www.midtronics.com
GR8-1200 OEM
Chapter 6: System Test
Table 10: Starter System Decisions and Recommendations
Ratings Description Range
Cold Cranking Amps (specifi ed
CCA
CA
JIS
DIN (A) Deutsche Industrie-Norm 100 to 1000
SAE (A) European labeling of CCA 100 to 3000
IEC (A)
EN (A) Europa-Norm 100 to 1700
MCA
by SAE): The amount of current
a battery can provide at 0 ºF
(–17.8 ºC).
Cranking Amps: The amount of
current a battery can provide at
32°F (0 ºC).
Japanese Industrial Standard:
(shown on a battery as a
combination of numbers and
letters.
International Electrotechnical
Commission
Marine Cranking Amps: The
amount of current a battery can
provide at 32°F (0 ºC).
100 to 3000
100 to 3000
72 numbers
from 26A17
to 245H52
100 to 1000
100 to 3000
8. Press an UP or DOWN ARROW key to select the BATTERY
RATING. Press ENTER.
? CCA
If you select JIS, the analyzer will ask for the JIS part number.
Scroll to the part number. To increase your scrolling speed,
hold the UP or DOWN ARROW key, or use the LEFT or
RIGHT ARROW key to move up or down four part numbers
at a time. Press ENTER to begin the batery test.
9. Hold the bottom of the analyzer two inches above the
battery case so that the IR temperature sensor on its underside can approximate the battery temperature. Press
NEXT to continue.
Battery Test Results
After the test, the analyzer displays a battery decision with an
analysis in a series of screens. The analysis includes the battery
state-of-health (SOH) and state-of-charge (SOC). See Table 3:
Battery Decisions for an explanation of the battery decisions.
Table 11: Battery Decisions: System Test
Decision Recommended Action
GOOD BATTERY Return the battery to service.
GOOD–RECHARGE Fully charge the battery and return it to service.
CHARGE & RETEST Fully charge the battery using a Midtronics Diagnostic Charger and retest. Failure to fully charge the
REPLACE BATTERY A REPLACE BATTERY result may also mean a poor connection between the battery and the vehicle. If
BAD CELL–REPLACE Replace the battery.
SIDE POST TEST Test data was inconclusive using the side post. Retest using side post adapters.
JUMP START POST Data was inconclusive using the jump start post. Retest at the battery terminals.
battery before retesting may cause false readings. If CHARGE & RETEST appears again after you
fully charge the battery, replace the battery.
you tested the battery using the System test, disconnect the battery cables and retest using the Battery
Test before replacing it.
WARNING: Do not charge the battery. Charging a battery with one or more bad cells could
cause an explosion and serious harm to the user.
24V 24-volt battery detected. You are attempting to test in-vehicle both batteries in a 24-volt system.
www.midtronics.com
Disconnect the batteries and test them individually.
27
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
Chapter 6: System Test
GR8-1200 OEM
Use the UP or DOWN ARROW key to scroll to each screen. To
return to the Main Menu, press the END soft key. If you are
performing a System Test, press the NEXT key to continue with
the Starter System Test.
Battery
decision
Measured
voltage
Selected
rating
Measured
rating
Starter Test
1. When prompted, start the vehicle’s engine.
2. The GR8 will display 1 of 8 starter decisions with the complete results in a series of screens similar to those shown
on the right. Use the UP or DOWN ARROW keys to scroll to
each screen.
To print, press the PRINT soft key. To continue testing,
press the NEXT soft key.
NOTE: In some cases, the GR8 may not detect the
vehicle’s starting pro le and will display the options STARTED and NO START. Select STARTED, to
continue with an alternator test. Select NO START
to end the test process.
Starter System Test Results
Screen 1 of 2
Average cranking
voltage
Average cranking
current if amp
clamp is used
Cranking time
in seconds
Screen 2 of 2
Y axis = System
performance:
cranking voltage
X axis = Time
Table 12: Starter System Decisions and Recommendations
Decision Action Recommended
CRANKING
NORMAL
LOW VOLTAGE The starter voltage is low and the battery is
CHARGE
BATTERY
REPLACE
BATTERY
NO START The engine didn’t start and the test was
CRANKING
SKIPPED
The starter voltage is normal and the
battery is fully charged.
fully charged.
The starter voltage is low and the battery
is discharged. Fully charge the battery and
repeat the starter system test.
(If the battery test result was (REPLACE or
BAD CELL.) The battery must be replaced
before testing the starter.
aborted.
The GR8 didn’t detect the vehicle’s starting
profi le and skipped the Starter Test.
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
28
www.midtronics.com
GR8-1200 OEM
Chapter 6: System Test
Charging System Test
When you press NEXT in any test result screen, the analyzer
proceeds to the Charging System Test.
1. CHECKING FOR ALTERNATOR OUTPUT: The analyzer is testing for alternator voltage.
2. TURN ALL VEHICLE LOADS OFF, IDLE ENGINE: Turn o vehicle loads (blowers, interior light, radio, etc.) and idle the
engine. Press the NEXT soft key to continue.
3. REV ENGINE WITH LOADS OFF FOR 5 SECONDS: Rev the
engine with the loads o . Gradually increase the rpm until
the analyzer tells you to HOLD the rev level as the bar on
the display moves to the right.
NOTE: Some 8-cylinder and older vehicles idle at
a high level after starting, allowing the analyzer
to detect the rev automatically.
4. ACQUIRING DATA....HOLD ENGINE RPM: Continue to hold
the rpm while the analyzer takes system measurements.
5. ENGINE REV DETECTED, IDLE ENGINE: The analyzer has detected the rev. Press the NEXT soft key.
6. TESTING ALTERNATOR AT IDLE, LOADS OFF: The analyzer
will next test the engine at idle for comparison to other
readings, and then test the diode ripple. Excessive ripple
usually means one or more diodes have failed in the alternator or there is stator damage.
9. REV ENGINE WITH LOADS ON FOR 5 SECONDS: The analyzer will test the charging system with the loads on and
prompt you to rev the engine. Gradually increase the rev
until the analyzer tells you to HOLD the rev level as the bar
on the display moves to the right.
10. ACQUIRING DATA....HOLD ENGINE RPM: Continue to hold
the rpm while the analyzer takes system measurements.
11. ENGINE REV DETECTED, IDLE ENGINE: The analyzer has detected the rev. Press the NEXT soft key.
12. ANALYZING CHARGING SYSTEM DATA: The analyzer is
completing its nal analysis of the charging system data.
13. TURN OFF LOADS AND ENGINE: Press the NEXT soft key to
display the results.
Charging System Test Results
Screen 1 of 3
Loads-off
DC voltage
at rev
Loads-off
current at
rev
if amp clamp
is used
Decision
Loads-on
DC voltage
at rev
Loads-on
current at
rev
if amp clamp
is used
7. TURN HIGH BEAMS AND BLOWER MOTOR ON, IDLE ENGINE: After a few seconds, the analyzer will ask you to turn
on the accessory loads. It will determine if the charging
system is able to provide enough current for the demands
of the electrical system.
IMPORTANT!
Turn on the high-beam headlights and the blower to
high. Do not use cyclical loads such as air conditioning
or windshield wipers.
8. TESTING ALTERNATOR AT IDLE, LOADS ON: The analyzer
will determine if the charging system is able to provide
su cient current for the demands of the vehicle’s electrical system.
Screen 2 of 3
Normal DC
voltage
range
Screen 3 of 3
Peak-to-peak
AC voltage
Bar graph of
DC voltage
within
normal
range (loads
on and off)
Graph
of diode
waveform
.
www.midtronics.com
29
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
Chapter 6: System Test
GR8-1200 OEM
Table 13: Charging System Decisions
Charging System
Decision
NO PROBLEMS The system is showing normal output from the alternator. No problem detected.
NO VOLTAGE The alternator is not providing charging voltage to the battery.
√ Check the belts to ensure the alternator is rotating with the engine running. Replace broken or
slipping belts and retest.
√ Check all connections to and from the alternator, especially the connection to the battery. If the
connection is loose or heavily corroded, clean or replace the cable and retest.
√ If the belts and connections are in good working condition, replace the alternator. (Older vehicles
use external voltage regulators, which may require only replacement of the voltage regulator.)
LOW VOLTAGE The alternator is not providing enough voltage to power the system’s electrical loads and charge the
battery.
√ Check the belts to ensure the alternator is rotating with the engine running. Replace broken or
slipping belts and retest.
√ Check the connections from the alternator to the battery. If the connection is loose or heavily
corroded, clean or replace the cable and retest.
HIGH VOLTAGE The voltage output from the alternator to the battery exceeds the normal limits of a functioning regulator.
√ Check to ensure there are no loose connections and that the ground connection is normal. If there
are no connection problems, replace the regulator. (Most alternators have a built-in regulator
requiring you to replace the alternator. In older vehicles that use external voltage regulators, you
may need to replace only the voltage regulator.)
The regulator controls voltage output based on the battery voltage, under-hood temperature, and
vehicle loads used. In other words, it controls the maximum voltage the system can produce based
on the current needs and amount of current that can be produced by the spinning of the rotor in the
alternator. The normal high limit of a typical automotive regulator is 14.5 volts +/–0.5. Refer to the
manufacturer specifi cations for the correct limit, which may vary by vehicle type.
A high charging rate will overcharge the battery and may decrease its life and cause it to fail. If the
battery test decision is REPLACE and the charging system test shows a HIGH OUTPUT, check the
battery’s electrolyte levels. A symptom of overcharging is battery fl uid spewing through the vent caps,
which causes low electrolyte levels and will harm the battery.
Action
Diode Decision Action
EXCESSIVE RIPPLE One or more diodes in the alternator are not functioning or there is stator damage, which is shown by
OPEN PHASE The analyzer has detected an open phase within the alternator. Replace the alternator.
OPEN DIODE The analyzer has detected a open diode within the alternator. Replace the alternator.
SHORTED DIODE The analyzer has detected an shorted diode within the alternator. Replace the alternator.
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
an excessive amount of AC ripple current supplied to the battery.
√ Make sure the alternator mounting is sturdy and that the belts are in good shape and functioning
properly. If the mounting and belts are good, replace the alternator.
30
www.midtronics.com
GR8-1200 OEM
Chapter 7: Battery Test
Chapter 7: Battery Test
Test Requirements
The GR8 guides you through the steps of selecting
your battery test parameters and interpreting the
results. Before you start the test, review the instructions in Chapter 4: Test Preparation on page 21.
NOTE: When you start a new test, the last test
results in memory are overwritten. Remember
to record or print the results if you need to retain
them.
IMPORTANT
Only the small clamps from the GR8 charge engine
should be connected to the battery terminals when
performing Battery Test.
If you use the ARROW keys to select option buttons, press the
NEXT soft key to continue to the next step.
1. In the Main Menu select the Battery test icon.
4. Select the POST TYPE. The JUMP START POST option appears for the IN VEHICLE test.
1 TOP POST
SIDE POST
2
3
JUMP START POST (In Vehicle Test Only)
Press the NEXT soft key to continue.
5. Select the BATTERY TYPE.
1 REGULAR FLOODED
2 AGM
3 AGM SPIRAL
Press the NEXT soft key to continue.
6. Select the battery’s rating units. The rating units and rating information required in the next step are printed on
the battery label. If the information is unreadable, contact
the battery manufacturer.
1 CCA
Press the NEXT soft key to continue.
2. Select the LOCATION. This is determined by whether the
battery is in or out of a vehicle when it is tested.
1 OUT OF VEHICLE
2 IN VEHICLE
Press the NEXT soft key to continue.
3. Use the UP or DOWN ARROW key to make your selections or
press the corresponding numerical key (1 or 2).
1 BELOW 250 MILES
2 ABOVE 250 MILES
NOTE: To display Kilometers, change the temper-
ature default to DEGREES C. Select ADMIN / TEMP
from the Main Menu to access this setting.
2 CA
3 JIS
4 DIN
5 SAE
6 IEC
7 EN
8 MCA
www.midtronics.com
31
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
Chapter 7: Battery Test
GR8-1200 OEM
If you select JIS, the analyzer will ask for the JIS part
number. Scroll to the part number. To increase your
scrolling speed, hold the UP or DOWN ARROW key, or use
the LEFT or RIGHT ARROW key to move up or down four
part numbers at a time. Press ENTER to continue.
Press the NEXT soft key to continue.
Table 14: Battery Ratings
Ratings Description Range
Cold Cranking Amps (specifi ed
CCA
CA
JIS
DIN (A) Deutsche Industrie-Norm 100 to 1000
SAE (A) European labeling of CCA 100 to 3000
IEC (A)
EN (A) Europa-Norm 100 to 1700
MCA
by SAE): The amount of current
a battery can provide at 0 ºF
(–17.8 ºC).
Cranking Amps: The amount of
current a battery can provide at
32°F (0 ºC).
Japanese Industrial Standard:
(shown on a battery as a
combination of numbers and
letters.
International Electrotechnical
Commission
Marine Cranking Amps: The
amount of current a battery can
provide at 32°F (0 ºC).
100 to 3000
100 to 3000
72 numbers
from 26A17
to 245H52
100 to 1000
100 to 3000
7. Press an UP or DOWN ARROW key to select the BATTERY
RATING. Press ENTER.
? CCA
If you select JIS, the analyzer will ask for the JIS part
number. Scroll to the part number. To increase your
scrolling speed, hold the UP or DOWN ARROW key, or use
the LEFT or RIGHT ARROW key to move up or down four
part numbers at a time. Press ENTER to continue.
Additional Test Requirements
For a more decisive result the analyzer may ask for additional
information or further explore the battery’s condition. The
following messages and instructions may appear before the
analyzer displays the results.
System Noise Detected
The analyzer has detected computer, ignition noise, or parasitic
drain, and will attempt to retest. Make sure all vehicle loads are
o , doors are closed, and the ignition is in the o position. The
analyzer will automatically retest when it no longer detects
system noise. If the message reappears:
• You may be testing too close to a noise source, such as a
charger or other high-current device. If so, move away and
retest.
• If you are unable to nd the source of the noise, fully
charge the battery and retest. If the message appears after
recharging, test the battery out of the vehicle.
• Disconnect the battery cables and retest.
Unstable Battery Detected
A battery that is weak or that has just been charged may retain
enough electrical activity to be detected by the analyzer
and will adversely a ect the test results. A fully charged
battery should stabilize quickly, after which the analyzer
will automatically retest. Weak batteries should be charged
and retested. If the battery is fully charged, check the clamp
connections.
Deep Scan Test
In some cases the analyzer may need to further analyze a
deeply discharged battery to determine whether the battery
should be replaced or if it has a chance to be recovered. It will
then conduct a Dynamic Scan Test of the battery for a few
seconds while displaying a battery being scanned.
8. Hold the bottom of the analyzer two inches above the
battery case so that the IR temperature sensor on its underside can approximate the battery temperature. Press
NEXT to continue.
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
32
www.midtronics.com
GR8-1200 OEM
Chapter 7: Battery Test
Battery Test Results
After the test, the analyzer displays a battery decision with an
analysis in a series of screens. The analysis includes the battery
state-of-health (SOH) and state-of-charge (SOC). See Table 3:
Battery Decisions for an explanation of the battery decisions.
Use the UP or DOWN ARROW key to scroll to each screen. To
return to the Main Menu, press the END soft key. If you are
performing a System Test, press the NEXT key to continue with
the Starter System Test.
Battery
decision
Measured
voltage
Selected
rating
Measured
rating
State of Health (SOH)
The battery’s state of health represents its general condition,
and therefore its ability to deliver the speci ed performance
compared with a fresh battery.
Although a poor state-of-health can be the result of defects
in construction, it is most often caused by normal wear, which
depends on vehicle needs, climate, and operating conditions.
These cause irreversible physical and chemical changes within
the battery until it can no longer hold a charge and supply
the power to start the car and provide auxiliary power to the
electrical system. As the battery approaches end of life, its
deterioration accelerates until it nally fails to start the vehicle.
Before failing, the battery may start the vehicle under normal
conditions but may not be able to operate in more extreme
conditions. Extreme heat or cold could expose a weak battery
and cause it to fail.
Table 15: Battery Decisions: Battery Test
Decision Recommended Action
GOOD BATTERY Return the battery to service.
GOOD–RECHARGE Fully charge the battery and return it to service.
CHARGE & RETEST Fully charge the battery using a Midtronics Diagnostic Charger and retest. Failure to fully charge the
REPLACE BATTERY A REPLACE BATTERY result may also mean a poor connection between the battery and the vehicle. If
BAD CELL–REPLACE Replace the battery.
SIDE POST TEST Test data was inconclusive using the side post. Retest using side post adapters.
JUMP START POST Data was inconclusive using the jump start post. Retest at the battery terminals.
battery before retesting may cause false readings. If CHARGE & RETEST appears again after you
fully charge the battery, replace the battery.
you tested the battery using the System test, disconnect the battery cables and retest using the Battery
Test before replacing it.
WARNING: Do not charge the battery. Charging a battery with one or more bad cells could
cause an explosion and serious harm to the user.
24V 24-volt battery detected. You are attempting to test in-vehicle both batteries in a 24-volt system.
www.midtronics.com
Disconnect the batteries and test them individually.
33
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
Chapter 8: ECM Power Supply
GR8-1200 OEM
Chapter 8: ECM Power Supply
Power Supply Mode tests and maintains battery
voltage in the vehicle at 13.5 volts to allow for uninterrupted reprogramming of vehicle computers,
retain vehicle system settings, or simply to maintain battery voltage.
IMPORTANT
Only the large clamps from the GR8 charge engine
should be connected to the battery terminals when
performing diagnostic charging.
Before starting Power Supply Mode, verify that all
vehicle loads are o and the key is not in the ignition.
NOTE: Start the Power Supply Mode to begin the
control module reprogramming process.
1. If connected, remove the small tester clamps from the battery terminals and connect the large charger clamps.
2. In the Main Menu use the LEFT or RIGHT ARROW key to
highlight the POWER SUPPLY icon. Press the NEXT soft
key.
4. Press the NEXT soft key.
Before entering the Power Supply Mode, the GR8 will test
the battery to determine if it needs to be charged. The
following message will be displayed if the battery does
not have a su cient charge.
NOTE: If you choose to charge the battery, you
will need to restart the Power Supply Mode once
the battery has been successfully charged.
NOTE:
The GR8 tests the battery to determine if it is
safe to charge. If it detects that the battery is defective, it beeps, ashes the status light, and displays a
warning that the battery is unsafe to charge. Press
the
EXIT
soft key to return to the Main Menu.
5. If the battery is safe to charge, the GR8 begins maintaining
the battery voltage at 13.5 volts.
3. Use the UP or DOWN ARROW key to select the BATTERY
TYPE, or press the corresponding numerical key to move
the dot to the option button of your choice.
1 REGULAR FLOODED
2 AGM
3 AGM SPIRAL
NOTE: Amperage uctuates in response to the
vehicle’s demands. If the voltage drops below
the 12.8, the GR8 displays a warning and raises
the voltage to the set point.
6. When nished servicing the vehicle, press the STOP button or the OFF switch, unplug the power cord and disconnect the clamps.
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
34
www.midtronics.com
GR8-1200 OEM
Chapter 9: Jump Start
Chapter 9: Jump Start
This charging mode makes high output current
available to boost charge an in-vehicle battery as
well as assist in starting the engine. If you need to
abort at any time, press the STOP key.
IMPORTANT
Only the large clamps from the GR8 charge engine
should be connected to the battery terminals when
performing diagnostic charging.
1. In the Main Menu, highlight the JUMP START icon and
press the NEXT key.
NOTE: The GR8 tests the battery to determine if
it is safe to charge. If it detects that the battery is
defective, it displays a warning that the battery is
unsafe to charge. Press the EXIT soft key to return
to the Main Menu.
Press the NEXT soft key. The BACK soft key returns you to
the Main Menu at the start of the test and to the previous
screen as you progress.
NOTE: If you use the ARROW keys to select op-
tion buttons, press the NEXT soft key to continue
to the next step. If you use the alphanumeric keypad to enter the number preceding the option
button, no additional keypress is needed.
3. If the battery is safe to charge, the GR8 will prompt you to
press the NEXT soft key to begin the boost charge
4. The GR8 begins boost-charging. Do not crank the engine
at this time.
5. When the GR8 displays “CRANK ENGINE NOW,“ beeps and
ashes the status light, you can crank the engine for up to
ve seconds.
6. When the GR8 displays “JUMP START COMPLETE,” press the
STOP key. (The alarm sounds every second until you press
STOP.)
2. Use the UP or DOWN ARROW key to select the BATTERY
TYPE, or press the corresponding numerical key (1, 2, or 3)
to move the dot to the option button of your choice.
1 REGULAR FLOODED
2 AGM
3 AGM SPIRAL
www.midtronics.com
35
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
Chapter 10: Manual Charging
GR8-1200 OEM
Chapter 10: Manual Charging
The GR8 charges the battery based on the current
limit or voltage limit, and charge duration that
you select.
CAUTION: You must monitor the battery’s State-of-
Charge (SOC) and temperature to avoid overcharg-
!
1. In the Main Menu, highlight the MANUAL icon and press
2. Use the UP or DOWN ARROW key to select the BATTERY
ing. Any charging after the battery is fully charged
can result in excessive battery temperature, which
will “gas” the battery and boil o electrolytes, shortening battery life.
IMPORTANT
Only the large clamps from the GR8 charge engine
should be connected to the battery terminals when
performing diagnostic charging.
the NEXT key.
TYPE, or press the corresponding numerical key to move
the dot to the option button of your choice.
1 REGULAR FLOODED
2 AGM
3 AGM SPIRAL
Press the NEXT soft key. The BACK soft key returns you to
the Main Menu at the start of the test and to the previous
screen as you progress.
NOTE: If you use the ARROW keys to select op-
tion buttons, press the NEXT soft key to continue
to the next step. If you use the alphanumeric keypad to enter the number preceding the option
button, no additional keypress is needed.
4. You can set limits using VOLTAGE or CURRENT.
If your limit type is CURRENT, select the maximum
amperage (1 to 60 amps). When in doubt, start with a low
charging current. Press the NEXT soft key.
50 AMPS
If your limit-type is VOLTAGE, select the maximum voltage.
The range for regular is 12.7 to 15.3 V; AGM is 12.7 to 14.4
V. Press the NEXT soft key.
12.40 VOLTAGE
5. Select a charge duration from 5 to 120 minutes, or select a duration greater than 120 minutes for Continuous
charging. To select a timed charge when “CONTINUOUS” is
displayed, use the key pad to enter a duration 5 and 120
minutes.
Continuous charging stops when you press the STOP key.
Timed Charge Continuous Charge
Selection Screen Selection Screen
Press the NEXT soft key. The BACK soft key returns you to
the Main Menu at the start of the test and to the previous
screen as you progress.
3. Use the UP or DOWN ARROW key to select the LIMIT TYPE,
or press the corresponding numerical key (1 or 2) to move
the dot to the option button of your choice.
1 LIMIT CURRENT
2 LIMIT VOLTAGE
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
36
www.midtronics.com
GR8-1200 OEM
NOTE: The GR8 tests the battery to determine if
it is safe to charge. If it detects that the battery is
defective, it displays a warning that the battery is
unsafe to charge. Press the EXIT soft key to return
to the Main Menu.
6. If the battery is safe to charge, the GR8 will begin charging
at the selected levels. The illustration shows an example of
the information displayed during timed charging
NOTE: If Continuous charge is selected, charging
time is not displayed.
7. When Manual Mode ends, the GR8 displays the total
charging time for Continuous and Timed Charging, the
amp hours replaced, and the charging mode.
Chapter 10: Manual Charging
The alarm sounds every 30 seconds until you disconnect
the clamps, or press the
NEXT
soft key.
www.midtronics.com
37
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
Chapter 11: Print / View Menu
Chapter 11: Print / View Menu
The Print/View Menu enables you to view and print
the results of the Battery, System, and Cable Drop
Tests before you perform another test and overwrite the results in memory.
View Test Battery
VIEW TEST BATTERY gives you the option of viewing and
printing the results of the Battery and System Tests. To print
the results, select the PRINT soft key. To return to the Main
Menu, press the END key.
View Test Charger
VIEW TEST CHARGER gives you the option of viewing and
printing the results of the Charger Test. To print the results,
select the PRINT soft key. To return to the Main Menu, press
the END key.
GR8-1200 OEM
View Cable Test
VIEW CABLE TEST gives you the option of viewing and printing
the results of the Cable Drop Test. To print the results, select the
PRINT soft key. To return to the Main Menu, press the END key.
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
38
www.midtronics.com
GR8-1200 OEM
Chapter 12: Info Menu
Chapter 12: Info Menu
The Info Menu will help you view your test data
and track the usage and history of your GR8. The
Info menu also allows you to view total history and
transfer information to another machine.
Totals
TOTALS counts the number of battery tests in two
main categories: TESTER TOTALS and CHARGER
TOTALS. Subcategories include: LIFETIME, USER
TOTALS, LAST 100 LOG, TOTALS BY DECISION and
SYSTEM TEST.
1 LIFETIME
Total tests since the GR8 was rst used.
Tester Totals
Charger Totals
4 TOTALS BY DECISION
Totals by battery decision since the last time they were
cleared by ADMIN.
5 SYSTEM TEST
NOTE: The SYSTEM TEST option is only available
under the TESTER TOTALS category.
Transfer
TRANSFER is an optional accessory that consists of
an IR software and hardware package that will enable you to transfer test data to a PC.
2 USER TOTALS
Total tests by User ID (and by UNREG user) since the rst
time a registered user logged in and the last time they
were cleared by ADMIN.
3 LAST 100 LOG
Last 100 tests performed by User ID (and by UNREG
user); includes the date and the battery decision (GOOD,
REPLACE, etc.).
View Wireless
Displays communication quality and channel be-
ing used for wireless communication between the
control head and the multitasking module.
Version
VERSION displays the GR8 software version, the
date the software was released, and the serial number of the control module. The utility also allows
you to print the information.
www.midtronics.com
39
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
Chapter 13: Cable Drop Test
GR8-1200 OEM
Chapter 13: Cable Drop Test
Cable Drop Test
If the test results for the starter or charging systems indicate
that there may be a problem, you may want to perform the
Cable Drop Test to determine if it is due to worn cables or bad
connections between the battery and the alternator or starter.
Worn cables or bad connections create higher resistance,
which causes a voltage drop across the circuit. The voltage
drop reduces current carrying capability that displays the
same symptoms as a weak alternator or starter and causes
premature battery failure.
There’s no need to run the engine. The Cable Drop Test uses
Midtronics’ conductance technology to send a signal through
the circuit at the component under test. The GR8 then
simultaneously calculates voltage drop on the positive (+)
and negative (–) sides of any circuit as well as the total voltage
drop. The amperage range for each of the four tests is 0 to
1000 A. When you change the setting from the factory defaults,
the GR8 will store your setting in memory for your next test.
There are three preset tests:
• BATTERY GROUND
• STARTER CIRCUIT
• ALTERNATOR CIRCUIT
To begin, select the Cable Drop Test icon in the Main Menu and
follow the instructions on the display.
IMPORTANT: For accurate results the battery should be good
and fully charged before you perform a test.
Battery Ground Test
The Battery Ground Test measures the voltage drop for the
ground strap.
1. SELECT CIRCUIT: Use the UP/DOWN ARROWS or the nu-
merical keypad to select the Battery Ground Test.
1 BATTERY GROUND
2 STARTER CIRCUIT
3 ALT CIRCUIT
4 OTHER
Press the NEXT soft key to continue.
2. SET AMPS: Use the UP/DOWN ARROWS or the keypad to
select the rated amperage of the circuit you are testing.
The default is 80 A.
A fourth test, OTHER CIRCUIT, tests other grounds and circuits
against your speci ed amperage capacity.
The test requires two test lead connections, as shown in the
gure below.
• Battery test leads at the component’s output lead (the B+
or output screw on the alternator) and the component’s
housing as ground
• DMM test leads at the battery terminals
NOTE: The test requires a complete circuit. If
you’re testing a system with a remote solenoid,
you can test from the battery to the solenoid, but
not from the battery to the starter.
Red Red
R
+
Battery
–
1
Component
Under
Test
R
2
Press the NEXT soft key to continue.
3. Connect the main clamps (battery test leads) to the battery and ground: positive (+) clamp to the battery’s positive post; negative (–) clamp to the vehicle chassis.
4. Connect the DMM cable to the battery posts: positive (+)
clamp to the positive post; negative clamp (–) to the negative post.
For the next few seconds the GR8 will display the word TESTING
and a stopwatch while it evaluates the battery ground.
Battery Ground Test Results
If there is a problem, the decision is CLEAN AND RETEST OR
REPLACE. To print the results, select the PRINT soft key. To
return to the Main Menu, press the END key.
Black Black
DMM Test Lead
www.midtronics.com
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
Battery Test Lead
40
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
www.midtronics.com
GR8-1200 OEM
Chapter 13: Cable Drop Test
Starter Circuit
The Starter Circuit Test measures the voltage drop of the
starter circuit.
1. SELECT CIRCUIT: Use the UP/DOWN ARROWS or the nu-
merical keypad to select STARTER CIRCUIT.
BATTERY GROUND
1
2 STARTER CIRCUIT
3 ALT CIRCUIT
4 OTHER
Press the NEXT soft key to continue.
2. SET AMPS: Use the UP/DOWN ARROWS or the keypad to
select the rated amperage of the starter circuit. The default is 150 A.
Press the NEXT soft key to continue.
3. Connect the positive (+) clamp of the battery test leads to
the starter’s battery terminal stud. Connect the negative
(–) clamp to the starter’s housing.
4. Connect the positive (+) DMM clamp to the battery’s positive (+) post. Connect the negative clamp (–) to the battery’s (–) negative post.
For the next few seconds the GR8 will display the word TESTING
and a stopwatch while it evaluates the battery ground.
Alternator Circuit
The Alternator Circuit Test measures the voltage drop of the
alternator circuit.
1. SELECT CIRCUIT: Use the UP/DOWN ARROWS or the nu-
merical keypad to select ALT CIRCUIT.
BATTERY GROUND
1
2 STARTER CIRCUIT
3 ALT CIRCUIT
4 OTHER
Press the NEXT soft key to continue.
2. SET AMPS: Use the UP/DOWN ARROWS or the keypad to
select the rated amperage of the alternator circuit. The
default is 80 A.
Press the NEXT soft key to continue.
3. Connect the positive (+) clamp of the battery test leads to
the alternator’s output stud (B+). Connect the negative (–)
clamp to the alternator’s housing.
4. Connect the positive (+) DMM clamp to the battery’s positive (+) post. Connect the negative clamp (–) to the battery’s (–) negative post.
For the next few seconds the GR8 will display the word TESTING
and a stopwatch while it evaluates the battery ground.
Starter Circuit Test Results
If there is a problem, the decision is CLEAN AND RETEST OR
REPLACE. To print the results, select the PRINT soft key. To
return to the Main Menu, press the END key.
Alternator Circuit Test Results
If there is a problem, the decision is CLEAN AND RETEST OR
REPLACE. To print the results, select the PRINT soft key. To
return to the Main Menu, press the END key.
www.midtronics.com
www.midtronics.com
41
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
Chapter 13: Cable Drop Test
GR8-1200 OEM
Other Circuit
This test enables you to measure voltage drop across other
components.
1. SELECT CIRCUIT: Use the UP/DOWN ARROWS or the nu-
merical keypad to select the OTHER.
BATTERY GROUND
1
2 STARTER CIRCUIT
3 ALT CIRCUIT
4 OTHER
Press the NEXT soft key to continue.
2. SET AMPS: Use the UP/DOWN ARROWS or the keypad to
select the rated amperage of the circuit you are testing.
The default is 10 A.
Press the NEXT soft key to continue.
3. Connect the positive (+) clamp of the battery test leads to
the component’s positive terminal (+). Connect the negative (–) clamp to the component’s negative (–) terminal.
Other Circuit Test Results
If there is a problem, the decision is CLEAN AND RETEST OR
REPLACE. To print the results, select the PRINT soft key. To
return to the Main Menu, press the END key.
4. Connect the positive (+) DMM clamp to the battery’s positive (+) post. Connect the negative clamp (–) to the bat-
tery’s (–) negative post.
For the next few seconds the GR8 will display the word TESTING
and a stopwatch while it evaluates the battery ground.
www.midtronics.com
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
42
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
www.midtronics.com
GR8-1200 OEM
Chapter 14: Digital Multimeter (DMM)
Chapter 14: Digital Multimeter (DMM)
DMM
The GR8’s 8 digital meters make it versatile enough
to test everything from a vehicle’s entire electrical
system to a board-level component:
• DC Voltmeter
• AC Voltmeter
• Scope
• DC Ammeter
• AC Ammeter
• Ohmmeter
• Diode Drop
• Volts/Amp
The DMM’s infrared temperature sensor also enables you to
determine the surface temperature of components before you
service them or as a diagnostic aid. Speci cations for each tool
are listed at the end of this chapter.
Select the DMM icon to display its METERS menu. The tools in
this menu are available in a series of three screens.
A measurement that is out of the limit displays as OL. Refer to
the manufacturer speci cations for the correct limits, which
may vary by component or vehicle type.
5. To return to the METERS menu, press the END s
oft key.
Scope
The scope is a voltmeter that provides a graph of voltage
di erence as it varies over time. After you select the scope icon,
note the instructions in the next screen before proceeding.
You’ll need the them after you press the NEXT soft key to
continue:
• Press 1 on the keypad to autoscale the scope.
• Press 3 on the keypad for the time display.
• Press 4 on the keypad for the FFT (frequency) display.
Press the NEXT soft key to continue.
In the time display the horizontal axis is in seconds and the
vertical axis is in volts.
In the frequency display the horizontal axis is in hertz and the
vertical axis is in volts.
Press the right soft key to alternate between the options to
RUN (measure and display the signal) and HOLD (freeze the
signal).
The scope enables you to print the voltage trace to the printer
when you freeze the signal. To print, select the PRINT soft key.
To return to the METERS menu, press END.
DC AMP (requires the optional amp clamp)
DC Volts
The DC voltmeter measures voltage between two points in a
circuit. The voltmeter is connected in parallel with the circuit.
1. Connect the DMM test lead to the GR8’s accessories port.
2. Select the meter’s icon.
3. Connect the clamps or probes in the correct polarity: red
clamp or probe to positive (+); black to negative (–).
4. The meter will autorange and display the measurement.
5. To return to the METERS menu, press the END soft key.
AC Volts
The AC voltmeter measures the AC volts between two points
a circuit. The voltmeter is connected in parallel with the circuit.
1. Connect the DMM test lead to the GR8’s accessories port.
2. Select the meter’s icon.
3. Connect the clamps or probes in the correct polarity: red
clamp or probe to positive (+); black to negative (–).
4. The meter will autorange and display the measurement.
in
The DC ammeter measures DC magnitude and ow of the DC
current in a circuit.
1. Connect the amp clamp lead to the GR8’s accessories
port.
2. Select the meter’s icon.
3. Select the amp clamp range.
1 70 AMP MAX.
2 700 AMP MAX.
Press the NEXT soft key to continue.
4. The meter will zero itself.
5. Place the clamp’s jaws around the negative (–) cable.
6. The GR8 will display the measurement.
7. To return to the METERS menu, press the END so
ft key
www.midtronics.com
43
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
Chapter 14: Digital Multimeter (DMM)
GR8-1200 OEM
AC AMP (requires the optional amp clamp)
The DC ammeter measures the magnitude and ow of the AC
current through a circuit during normal operations.
1. Select the amp clamp range.
70 AMP MAX.
1
2 700 AMP MAX.
Press the NEXT soft key to continue.
2. The meter will zero itself.
3. Place the clamp’s jaws around the negative (–) cable.
4. The GR8 will display the measurement.
5. To return to the METERS menu, press the END soft key.
Temp
The IR temperature sensor measures surface temperature
within a range of –20 to 200°C. The tool can be used for check ing
the transmission for overheating, and the temperature levels
of the heater and air conditioner. Figure 12 shows how to aim
the GR8’s temperature sensor at a component you are testing.
Volts/Amp (requires the optional amp clamp)
The volts/amp meter simultaneously
voltage and charging current.
1.
Connect the amp clamp lead to the GR8’s accessories port.
2. Select the meter’s icon.
3. Select the amp clamp range.
1 70 AMP MAX.
2 700 AMP MAX.
Press the NEXT soft key to continue.
4. The meter will zero itself and display the amperage and
voltage measurements.
5. Place the clamp’s jaws around the negative (–) cable.
6. Connect the battery test cable to the GR8.
7. Connect the battery test clamps in the correct polarity: red
clamp or probe to positive (+); black to negative (–).
8. The GR8 will display the measurement.
9. To return to the METERS menu, press the END soft key.
measures charging
Ohm Meter
The meter is connected in parallel with the circuit under test
and uses the power supplied by the GR8’s internal batteries to
detect open or excessive resistance.
CAUTION: Always remove power from the circuit
!
before connecting the ohmmeter to avoid damaging the analyzer.
1. Connect the DMM test lead to the GR8’s accessories port.
2. Select the meter’s icon.
3. Connect the clamps or probes in the correct polarity: red
clamp or probe to positive (+); black to negative (–).
4. The meter will autorange and display the measurement.
5. When nished, press the END soft key.
6. To return to the METERS menu, press the END soft key.
Diode
This test measures the voltage drop across components, such
as diodes.
1.
Connect the probes test lead to the GR8’s accessories port.
Multimeter Specifi cations
The accuracy speci cation is de ned as ± (n% reading + [count
* resolution]) at 77 °F.
Table 16: DMM Specifi cations
Overload
Protection
Overload
Protection
Vdc
Vac
Adc
Aac
Ohm
Continuity
Diode
Temperature
Range Resolution Accuracy
0–60 V 0.01 V 0.05% + 2 120 Vrms
0–24 Vac rms 0.01 Vac 0.1% + 3 120 Vrms
0–70 A 0.01 A ± 3% of reading ± 1A 1000 Arms
0–700 A 0.1 A ± 3% of reading ± 1A 1000 Arms
0–70 A 0.01 A ± 3% of reading ± 1A 1000 Arms
0–700 A 0.1A ± 3% of reading ± 1A 1000 Arms
Accuracies are specifi ed from 2% to 100% of range.
Range Resolution Accuracy
10Ω–2 MΩ 1 Ω 2.0% + 4 120 Vrms
< 10 Ω 1 Ω 2.0% + 4 120 Vrms
0–1.5 V 0.01 V 0.05% + 2 120 Vrms
-20–200 °F 1 °F 1.0% + 5 --------
2. Select the meter’s icon.
3. Connect the probes in the correct polarity: red clamp or
probe to positive (+); black to negative (–).
4. The meter will autorange and display the measurement.
5. When nished, press the END soft key.
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
44
www.midtronics.com
GR8-1200 OEM
Chapter 15: Admin
Chapter 15: Admin
This section explains how to use the Admin Util-
ity to control password access to the GR8-1200. It
also describes functions that clear test totals and
restore settings to factory defaults.
Select the ADMIN icon to display a list of administrative
functions:
Clock
The CLOCK ADJUST utility has four settings. Use the
UP or DOWN ARROW key to highlight the setting
you want to change. Although the date and time
have been set at the factory, you may want to make
adjustments based your time zone or Daylight Saving Time.
MODE : AM/PM
TIME : 9:07 AM
FORMAT :
DATE :
Mode
Use the UP or DOWN ARROW key, or press the corresponding
numerical key (1 or 2) to move the dot to the option button of
your choice.
1. Select the or 24-hour or 12-hour (AM/PM) clock.
1 24 HOUR
2 AM/PM
/MM/DD/YYYY
/11/29/2006
Format
Use the UP or DOWN ARROW or press the corresponding
numerical key (1 or 2) to move the dot to the option
button of your choice.
1. Select the format of the date.
1 MM/DD/YYYY (month/day/year)
2 DD/MM/YYYY (day/month/year)
2. If you used the ARROW keys, press the SAVE soft key to
save your setting or the BACK soft key to return to the
CLOCK ADJUST screen without saving the changes.
If you use the alphanumeric keypad to enter the number
preceding the option button, no additional keypress is needed
to save your selection.
Date
1. Use the LEFT or RIGHT ARROW key to highlight the month,
day, or year. To rapidly scroll, hold down an UP or DOWN
ARROW key.
12 / 17 / 2008
2. Press the SAVE soft key to save your setting or the BACK
soft key to return to the CLOCK ADJUST screen without
saving the changes.Users
The USERS utility allows you to create and edit a
USER ID with 1 to 7 alphanumeric characters and
link it to a test counter. It also allows you to delete a
USER ID and its associated test total.
2. If you used the ARROW keys, press the SAVE soft key to
save your setting or the BACK soft key to return to the
CLOCK ADJUST screen without saving the changes.
If you use the alphanumeric keypad to enter the number
preceding the option button, no additional keypress is
needed to save your selection.
Time
1. Use the LEFT or RIGHT ARROW keys to highlight the hour,
minutes, or AM or PM. To rapidly scroll, hold down an UP
or DOWN ARROW key.
9 : 19 PM
2. Press the SAVE soft key to save your setting, or press the
BACK soft key to return to the CLOCK ADJUST screen.
www.midtronics.com
Entering A New User ID
1. To create a USER ID, select:
1 ENTER NEW
2 DELETE
3 EDIT
Press the NEXT soft key to display the list of available IDs.
2. Use the UP or DOWN ARROW keys to scroll to the ID placeholder you want to use. Scrolling past the rst line displays
the previous screen. Scrolling past the fourth line displays
the next screen. To display more placeholders, continue
scrolling or use the LEFT or RIGHT ARROW key to jump up
or down through the list ve lines at a time.
1 USER01
2 USER02
3 USER03
4 USER04
45
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
Chapter 15: Admin
GR8-1200 OEM
Press the NEXT soft key to continue.
3. To clear the default characters, press the LEFT ARROW key.
To add a space, move the cursor forward by pressing the
RIGHT ARROW key.
ENTER USER ID
USER01
4. Insert a character by pressing the alphanumeric key associated with the character as many times as needed. Press
the SAVE soft key.
ENTER USER ID
MIKE T
Deleting A User ID
NOTE: You cannot delete placeholder USER IDs
(i.e., USER03).
1. To delete a USER ID, select:
1 ENTER NEW
2 DELETE
3 EDIT
Press the NEXT soft key to display the list of IDs.
2. Use the ARROW keys to select a USER ID as described in
step 2 in “Entering a New User ID” on the previous page.
1 ANDY
2 JIM F
3 USER03
4 USER04
Press the DELETE soft key to continue.
Editing A User ID
1. To edit a USER ID, select:
1 ENTER NEW
2 DELETE
3 EDIT
Press the NEXT soft key to display the list of IDs.
2. Use the ARROW keys to select a USER ID as described in
step 2 in “Entering A New User ID”.
1 ANDY
2 JIM F
3 USER03
4 USER04
Press the SELECT soft key to continue.
3. Edit the displayed User ID.
4. Press the SAVE button to save your changes.
Shop
The SHOP INFO utility allows you to create a header
for your printed test results with your business location information when the Admin option 3-PRINT
HEADER is selected (page 35). Its three information
screens contain 12 lines of text with a maximum of
17 characters per line.
You create your own header or load one from the data card.
To manually create or overwrite a header:
1. Select MANUAL EDIT and press NEXT.
2. Press the UP or DOWN ARROW to highlight the line you
want to change. The cursor blinks to the right of the last
character in the line. (The cursor is not visible if all character spaces are lled.)
3. To erase a character, press the LEFT ARROW key.
4. Insert a character by pressing the alphanumeric key associated with the character as many times as needed. You
can center text by inserting blank spaces with the RIGHT
ARROW key. If you pause momentarily, the cursor will automatically move to the right.
IMPORTANT: Be sure to erase any default characters on un-
used lines by pressing the LEFT ARROW key.
5. Press the SAVE soft key to save your setting or the BACK
soft key to return to the SHOP INFO screen without saving
the changes.
Table 17: Battery Ratings
Screen 1
1–YOUR SHOP NAME
2–1000 ANY ST.
3–YOUR TOWN, STATE
4–YOUR POSTAL CODE
5–YOUR COUNTRY
—
6–YOUR PHONE NUMBER
7–WWW.WEBSITE.COM
8–
Screen 2
—
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
46
www.midtronics.com
GR8-1200 OEM
Chapter 15: Admin
To help you edit and center your header, use a pencil to write the information in the template below before entering it into the
Battery Diagnostic Station.
Header Template
Line 1
Line 2
Line 3
Line 4
Line 5
Line 6
Line 7
Line 8
Display
The LCD CONTRAST utility allows you to adjust the
contrast of the text on the display and the backlight time.
Contrast Level
The contrast level is 0 (lightest) to 10 (darkest). To change it:
1. Press the UP or DOWN ARROW key to highlight the option.
CONTRAST LEVEL 10
BACKLIGHT TIME 60
2. Press the ADJUST soft key to display the option’s numerical scroll box.
9 (1-10)
3. Press the UP or DOWN ARROW key or the corresponding
numerical keys to select your preference. To erase a character, press the LEFT ARROW key.
4. Press the SAVE soft key to save your setting or the BACK
soft key to return to the LCD OPTIONS screen without saving the changes.
Coupon
1. Use the UP or DOWN ARROW key, or press the corresponding numerical key to move the dot to the option button of
your choice (1 or 2).
1 NO USER COUPON PRINTED
2 USER COUPON
2. If you used the ARROW keys, press the SAVE soft key to
save your setting or the BACK soft key to return to the Admin / Utility Menu without saving the changes.
If you use the alphanumeric keypad to enter the number
preceding the option button, no additional keypress is needed
to save your selection.
Edit Coupon
The EDIT COUPON utility allows you to create and
store a promotional coupon or message on the
printed test results you give to your customers. The
utility’s two information screens contain eight lines
of text with a maximum of 17 characters per line. To
enable and disable the inclusion of the text on your
test results, use the COUPON utility.
To create and edit a coupon, see the procedure under “Shop”
in this chapter for using the keypad to enter and backspace
over characters.
The COUPON utility allows you to enable and dis-
able the custom coupons or message created in
the EDIT COUPON utility. You also have the option
of having no coupon print.
www.midtronics.com
47
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
Chapter 15: Admin
GR8-1200 OEM
To help you edit and center your coupon, use a pencil to write the information in the template below before entering it into the
Battery Diagnostic Station.
Coupon Template
Line 1
Line 2
Line 3
Line 4
Line 5
Line 6
Line 7
Line 8
Temp
The TEMP. UNITS utility allows you to set the units
of measurement to either Fahrenheit or Celsius.
To set your preference:
1. Use the UP or DOWN ARROW key, or press the corresponding numerical key (1 or 2) to move the dot to the option
button of your choice.
1 DEGREES F
2 DEGREES C
2. If you used the ARROW keys, press the SAVE soft key to
save your setting or the BACK soft key to return to the
Setup Menu without saving the changes.
If you use the alphanumeric keypad to enter the number
preceding the option button, no additional keypress is
needed to save your selection.
Language
The LANGUAGE utility allows you to select a lan-
guage for the display and printouts. You can override the selection when the Battery Diagnostic Station displays the language option after you turn it
on or print results.
To set your preference:
1. Use the UP or DOWN ARROW key or press the corresponding numerical key (1, 2, or 3) to move the dot to the option
button of your choice.
1 ENGLISH
2 ESPAÑOL
3 FRANÇAIS
2. If you used the ARROW keys, press the SAVE soft key to
save your setting or the BACK soft key to return to the Admin / Utility Menu without saving the changes.
If you use the alphanumeric keypad to enter the number
preceding the option button, no additional keypress is needed
to save your selection.
Format
Select this utility to format an data card to receive
data or erase all data on the card. The Battery Diagnostic Station will warn you before formatting the
disk and ask if you want to continue.
Update
When software updates become available for the
Battery Diagnostic Station, this utility walks you
though the quick process of updating the Battery
Diagnostic Station software using a data card.
Admin
Select the ADMIN icon to display a list of adminis-
trative functions:
Use the UP or DOWN ARROW key or press the corresponding
numerical key (1, 2, or 3) to move the dot to the option button
of your choice.
1
OPTIONS
2 CHANGE ADMIN PIN
CLEAR TEST TOTALS
3
4 RESET DEFAULTS
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
48
www.midtronics.com
GR8-1200 OEM
Chapter 15: Admin
Options
In the OPTIONS section there are four functions that allow you
to control user access to the Main Menu and Admin / Utility
Menu. Each option is easily enabled or disabled by turning
it ON or OFF. To save your settings after each selection, press
the SAVE soft key. To return to the administrative functions list
without saving, press the BACK soft key.
1 – USER ID
Select this setting to enable (ON) or disable (OFF) the
USER ID login screen.
2 – UNREG. USER
Select this setting to enable (ON) or disable (OFF) unregistered login access to the Battery Diagnostic Station.
3 – PRINT HEADER
Select this setting to enables or disable printing of the
header you created using the Shop Utility (page 21).
4 – ADMIN PIN
Select this setting to enable (ON) password protection for
ADMIN mode
5 – 7 SCREEN INPUT 1-3
Select this setting to enable (ON) to display user-de ned
text elds
Change Admin Pin
This function allows you to enter a new Admin Pin.
Clear Test Totals
This function allows you to clear the test totals by User ID and
battery test decision. The Battery Diagnostic Station veri es
that you want the counter reset to 0 before it continues.
NOTE: This will not clear the lifetime test total
available in the VERSION information screen.
Reset Defaults
This function allows you to reset Administrative options to
their original settings. It will clear all registered users.
Table 18: Battery Ratings
Option Default Settings
1 – USER ID ON
2 – UNREG. USER ON
3 – PRINT HEADER ON
4 – ADMIN PIN OFF
5 – 7 SCREEN INPUT 1-3 OFF
Printer
The PRINTER utility allows you to set your printer
preference.
1.
Use the UP or DOWN ARROW key or press the corresponding numerical key (1 or 2) to move the dot to the option
button of your choice. The default is the internal printer.
1 IR PRINTER
2 INTERNAL PRINTER
2. If you used the ARROW keys, press the SAVE soft key to
save your setting or the BACK soft key to return to the Admin Menu without saving the changes.
If you use the alphanumeric keypad to enter the number
preceding the option button, no additional keypress is
needed to save your selection.
Buzzer
The BUZZER utility allows you to enable or disable
the beep that warns you if the clamps are connected improperly and alerts you to other errors.
www.midtronics.com
1. Use the UP or DOWN ARROW key or press the corresponding numerical key (1 or 2) to move the dot to the option
button of your choice.
1 OFF
2 ON
2. If you used the ARROW keys, press the SAVE soft key to
save your setting or the BACK soft key to return to the Admin / Utility Menu without saving the changes.
If you use the alphanumeric keypad to enter the number
preceding the option button, no additional keypress is needed
to save your selection.
49
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
Chapter 15: Admin
GR8-1200 OEM
User Screen
This utility allows you to customize screen infor-
mation. Data may be entered manually or using a
data card. To use a data card, insert the data card
in to the data slot and select Data Card. Data will
be uploaded automatically and tester will return to
Utility Menu.
1. Select the input screen by pressing the UP or DOWN ARROW key as many times as needed:
INPUT SCREEN 1
1
2 INPUT SCREEN 2
3 INPUT SCREEN 3
Press the NEXT soft key to continue.
2. Use the UP or DOWN ARROW keys to scroll to the method
for data entry you want to use.
1 MANUAL EDIT
2 DATA CARD
Press the NEXT soft key to continue.
3. Insert a character by pressing the alphanumeric key associated with the character as many times as needed. If you
pause momentarily, the cursor will automatically move to
the right.
4. Use the UP or DOWN ARROW key to move to the line you
want to edit.
SCREEN OPTIONS
1 -
2 -
3 -
4 -
Press the SELECT soft key to continue.
5. Insert a character by pressing the alphanumeric key associated with the character as many times as needed. If you
pause momentarily, the cursor will automatically move to
the right.
1 - USER OPTION LINE 1
2 -
3 -
4 -
Press the SAVE soft key.
ENTER SCREEN TITLE
Press the NEXT soft key to continue.
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
50
www.midtronics.com
GR8-1200 OEM
Chapter 16: Troubleshooting
Chapter 16: Troubleshooting
he table below will help you troubleshoot test messages. If troubleshooting does not solve the problem, call Midtronics
Customer Service at 1.800.776.1995.
Table 19: Troubleshooting
MESSAGE Option EXPLANATION
VOLTAGE OUT OF RANGE!
VALID RANGE
0 TO 16 VOLTS
INVALID
NUMERIC
ENTRY
INTERNAL MEMORY ERROR!
CALL MIDTRONICS
CUSTOMER SERVICE
1-800-776-1995
REVERSE CONNECTION!
CHECK POLARITY OF SMALL
CLAMPS.
CONNECT RED CLAMP
TO BATTERY POSITIVE (+)
POST, CONNECT BLACK
CLAMP TO BATTERY
NEGATIVE (-) POST!
Attention light fl ashes at
0.5 second intervals.
Less than 100 CCA or
invalid date entry can
cause this error.
Attention light fl ashes at
.5 second intervals.
Attention light fl ashes at
0.5 second intervals
At power up or when
reverse connection is
made. For charger this
can only occur at main
menu or in a charger
test screen
Clamp not connected
Attention light fl ashes at
0.5 second intervals
Tool detects inccorect voltage in battery test.
Any edit box entry that exceeds the limits.
Upon power up the tool detects a checksum error
Tool will return to state that threw the error if the connection becomes
valid. For charger both the bridge and controller will sound a steady
tone until the error is corrected.
Tool will return to state that threw the error if the connection becomes
valid
CHARGER FAULT!
CHECK CLAMPS! CHECK
SERIAL CABLE!
BATTERY POWER TOO LOW
TO USE PRINTER. CONNECT
TO FULLY CHARGED
BATTERY TO PRINT
RESULTS.
11.50V TO 16.00V
www.midtronics.com
Attention light fl ashes at
0.5 second intervals
Does not print and
display this message
if clamps are not
connected
Charger reported a fatal error.
Screen will be displayed for 3 seconds and then tool will return to
viewing screen where print initiated from.
51
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
Chapter 16: Troubleshooting
MESSAGE Option EXPLANATION
GR8-1200 OEM
CHARGER ERROR
IS CHARGER TURNED ON?
ARE CABLES CONNECTED?
WIRELESS ERROR
IS CHARGER TURNED ON?
ARE YOU WITHIN RANGE?
SYSTEM NOISE DETECTED The GR8 has detected
UNSTABLE BATTERY
DETECTED
This occurs if the
bridge cannot talk
to the charger.
If Zigbee connected and
message fails 4 times
this error appears.
computer, ignition
noise, or parasitic drain,
and will attempt to
retest.
A battery that is weak,
or that has just been
charged, may retain
enough electrical
activity to be detected
by the GR8 and will
adversely affect the
test results.
Make sure the charger is turned and the cables are connected. Also
make sure the Multitasker module is receiving power and is properly
connected between the Control Module and the charger.
This happens from Main Menu into charge feature or when results are
uploaded.
Make sure all vehicle loads are off, doors are closed, and the ignition
is in the off position. The GR8 will automatically retest when it no
longer detects system noise. If the message reappears:
• You may be testing too close to a noise source, such an arc
welder or other high-current device. If so, move away and retest.
• If you are unable to fi nd the source of the noise, fully charge the
battery and retest. If the message appears after recharging, test
the battery out of the vehicle.
• Disconnect the battery cables and retest.
A fully charged battery should stabilize quickly, after which the GR8
will automatically retest. Weak batteries should be charged and
retested. If the battery is fully charged, check the clamp connections.
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
52
www.midtronics.com
GR8-1200 OEM
Chapter 17: Charger Maintenance
Chapter 17: Charger Maintenance
Replacing the Paper Roll
The printer uses thermal paper in a roll with the dimensions
2.25 in x 85 ft. (57 mm x 25.9 m). You can purchase replacement
rolls through a local o ce supply store.
Major o ce supply stores also carry the recommended paper:
Table 20: Offi ce Supply Stores
Store Part Number Phone
Offi ce Depot 209-653-271 800-463-3768
Offi ce Max 20121146 800-283-7674
Quill 856607 800-789-1331
Staples 531236 800-378-2753
Test Cable Maintenance
Here are a few things you can do to protect your test cables
from damage and premature wear:
• The grease, dirt, and sulfation that build up on battery terminals are highly corrosive and can damage the clamps
over time. Before connecting the clamps, ensure accurate
test readings and protect the clamps by cleaning the battery case and terminals using a wire brush and a mixture
of water and baking soda.
Attaching the Charger Cables
The two connectors for the charger cables are located on
the back of the GR8. Three screws are included to secure the
cables. To attach the cables:
1. Plug in the large connector (A), then plug in the small connector (B).
A
2. Slide the cover (C) down the cables until it seats against
the sheet metal.
B
• Periodically clean the clamps using a mixture of baking
soda and water, or a mild hand-soap, and a small bristle
brush.
• Clean the battery terminals. If stud adapters are required,
fasten them with the proper tool. Do not use the battery
clamps to tighten adapters.
• Never remove the clamps from a battery to abort an active charging session. Always press the red STOP button
before removing the clamps.
• Do not leave the clamps laying in battery acid.
• Hang the clamps on the cable wrap on the back of the GR8
when not in use.
C
3. Insert the screws through the holes in the cover and sheet
metal. Tighten the screws securely with a small screwdriver. (To remove the cables, use the attachment instructions in reverse.)
www.midtronics.com
53
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
PATENTS
The GR8 Battery Diagnostic Station is made in the U.S.A. by Midtronics, Inc. and is protected by one or more of the following U.S.
Patents: 4,816,768; 4,825,170; 4,881,038; 4,912,416; 5,572, 136; 5,585,728; 5,592,093; 5,757,192; 5,821,756; 5,831,435; 5,914,605;
6,051,976; 6,091,245; 6,163,156; 6,249,124; 6,304,087; 6,310,481; 6,316,914; 6,323,650; 6,351,102; 6,359,441; 6,363,303; 6,392,414;
6,441,585; 6,445,158; 6,456,045; 6,469,511; 6,534,993; 6,544,078; 6,556,019; 6,566,883; 6,586,941; 6,707,303. Canadian Patents:
1,295,680; 1,280,164. United Kingdom Patent: 0,672,248; 0,417,173. German Patent: 693 25 388.6; 689 23 281.0-08; 93 21 638.6.
And other U.S. and Foreign patents issued and pending. This product may utilize technology exclusively licensed to Midtronics,
Inc. by Johnson Controls, Inc. and/or Motorola, Inc.
LIMITED WARRANTY
The charger is warranted to be free of defects in materials and workmanship for a period of two years from date of purchase. The
charger cable is warranted to be free of defects in materials and workmanship for a period of one year from the date of purchase.
The printer is warranted to be free of defects in materials and workmanship for a period of two years from date of purchase.
Midtronics will, at our option, repair or replace the equipment with a remanufactured equipment. This limited warranty applies
only to the speci ed equipment, and does not cover any other equipment, static damage, water damage, overvoltage damage,
dropping the units, or damage resulting from extraneous causes including owner misuse. Midtronics is not liable for any
incidental or consequential damages for breach of this warranty. The warranty is void if owner attempts to disassemble the GR8
or printer, or to modify the cable assembly.
SERVICE
To obtain service, contact Midtronics for a Return Authorization number, and return the unit to Midtronics freight prepaid,
Attention: RA# ________. Midtronics will service the GR8 and reship the next scheduled business day following receipt, using the
same type carrier and service as received. If Midtronics determines that the failure was caused by misuse, alteration, accident,
or abnormal condition of operation or handling, purchaser will be billed for the repaired product and it will be returned freight
prepaid with freight charges added to the invoice. Any GR8 beyond the warranty period is subject to the repair charges in e ect
at that time. Optional remanufacturing service is available to return the tester to like-new condition. Out-of-warranty repairs will
carry a 3-month warranty. Remanufactured units purchased from Midtronics are covered by a 6-month warranty.
167-000101A 1/09 2009 Midtronics, Inc. All rights reserved.
Loading...