Transmission ISUZU TF SERIES 2004 Workshop Manual

TRANSMISSION CONTROL SYSTEM (AW30 –40LE) (V6 3.5L) 7A2-17

Tech 2 OBD Connection
In order to access OBD Transmission Control Module
(TCM) data, use of the Tech 2 scan tool kit (7000086)
is required.
1. The electronic diagnosis equipment is composed of:
1. Tech 2 hand held scan tool unit (7000057) and
DLC cable (3000095).


901RW176
2. SAE 16/19 Pin Adapter (3000098)(1), RS232
Loop Back Connector (3000112)(2), and
PCMCIA Card (3000117)(3).






F07RW033

7A2-18 TRANSMISSION CONTROL SYSTEM (AW30 –40LE) (V6 3.5L)

2. Connecting the Tech 2



901RW180

Legend
(3) SAE 16/19 Adapter
(1) PCMCIA Card (4) DLC Cable
(2) RS 232 Loop Back Connector (5) Tech 2



Before operating the Isuzu PCMCIA card with the
Tech 2, the following steps must be performed:
1. The Isuzu System PCMCIA card (1) inserts into
the Tech 2 (5).
2. Connect the SAE 16/19 adapter (3) to the DLC
cable (4).
3. Connect the DLC cable to the Tech 2 (5)
4. Mark sure the vehicle ignition is off.

TRANSMISSION CONTROL SYSTEM (AW30 –40LE) (V6 3.5L) 7A2-19

5. Connect the Tech 2 SAE 16/19 adapter to the
vehicle DLC (1).






060r300015
6. The vehicle ignition turns on.
7. Verify the Tech 2 power up display.





060RW009
NOTE: The RS232 Loop back connector is only to use
for diagnosis of Tech 2 and refer to user guide of the
Tech 2.

8. The power up screen is displayed when you
power up the tester with the Isuzu systems
PCMCIA card. Follow the operating procedure
below.




060R100102

7A2-20 TRANSMISSION CONTROL SYSTEM (AW30 –40LE) (V6 3.5L)




RTW37ALH000101

Once the test vehicle has been identified an
“ Application (Powertrain) Menu" screen appears.
Please select the appropriate application.
The following table shows, which functions are used fo
r
the available equipment versions.



F0: Diagnostic Trouble Codes

F0: Read DTC Info As stored By ECU

F1: Clear DTC Information

F2: DTC Information
F1: Data Display
F2: Snap Shot
F3: Miscllaneous Tests

F0: Lamps

F0: Power Lamp Test
F1: 3rd start Lamp Test
F2: AT Oil Temperature Lamp
F3: Check Light
F1: Solenoids

F0: Shift solenoid A (S1)
F1: Shift Solenoid B (S2)
F2: Pressure Control Solenoid (PCS)

TRANSMISSION CONTROL SYSTEM (AW30 –40LE) (V6 3.5L) 7A2-21

Diagnostic Trouble Codes
The purpose of the “Diagnostic Trouble Codes" mode is
to display stored TCM trouble codes.
When “Diagnostic Trouble Codes" is selected an
“ Application Menu" screen appears.
Clear DTC Information
The purpose of the “Clear DTC Information" mode is to
command the clearing of stored TCM trouble codes.
When “Clear DTC Information" is selected, a “Clea
r
DTC Information", warning screen appears. This screen
informs you that by cleaning DTC's, “all stored DTC
information in controller will be erased".
Do you want to clear DTC's (Yes/No).
Press either the Yes or No key when answering.
After clearing codes, confirm system operation by test
driving the vehicle.
Allow the vehicle to shift through all four forward gears
in a manner which attempts to repeat the failure
condition.
NOTE: When the trouble has not been repaired and
the trouble code cannot be erased, check the vehicle
again.
DTC Information
When “DTC Information" is selected, an “Application
Menu" appears with a list of DTC information function
keys addressing DTC specifics and their origins.
Function key selections may vary for particular vehicle
and/or system.
Data Display
The purpose of the “Data Display" mode is to
continuously monitor data parameters.
The current actual values of all important sensors and
signals in the system are display through F1 mode.
When “Data Display" is selected an “Application Menu"
appears. Please select either “Engine" or “Transmission
Data Display".
See “Transmission Data" on next page.
Snapshot
When “Snapshot" is selected an “Application Menu"
appears.
When “Transmission Snapshot" application is selected
from the “Application Menu", a “Snapshot Menu"
appears, displaying several options. “Snapshot" options
may vary from one system to another.
“ Snapshot" allows a recording of all vehicle parameters.
There parameters may then be replayed at a future
point in time.
This action allows you to focus on making the condition
occur, rather than trying to view all of the data in
anticipation of the fault. The snapshot will collect
parameter information around a trigger point that you
select.

When a snapshot is taken. It is recorded onto the
PCMCIA memory card. When the Tech 2 is powered
down. Snapshots are not lost.
Actuator Tests
The purpose of “Actuator Tests" mode is to check fo
r
correct operation of electronic system actuators.
Lamps
You can operate the lamps by pressing the “ON" and
“ OFF" buttons.
Preconditions: none
Solenoid
Solenoid A(S1), Solenoid B(S2)
You can operate the solenoids by pressing the “ON"
and “OFF" buttons.
Preconditions: P –N position, no vehicle speed, no
engine speed
Pressure Control Solenoid (PCS)
You can set desired PCS Current using the “ON" (+20)
and “OFF" (-20) button. The PC Solenoid Data informs
about PCS Current, Pressure and Duty Cycle.
Preconditions: P –N position, no engine speed, no
vehicle speed
NOTE: Freeze Frame
Freeze Frame is an element of the Diagnostic
Management System which stores various vehicle
information at the moment an emission-related fault
is stored in memory and when the Check Transe
Lamp is commanded on. These data can help to
identity the cause of a fault. Refer to Storing An
d
Erasing Freeze Frame Data for more detaile
d
information.

7A2-22 TRANSMISSION CONTROL SYSTEM (AW30 –40LE) (V6 3.5L)

TRANSMISSION DATA
ITEM UNIT ENGIN RUNNING AT IDLE
Current Gear 1 st/2 nd/3 rd/4 th 1 st
Target Gear 1 st/2 nd/3 rd/4 th 1 st
Vehicle Speed km/h 0 km/h
AT Output Speed (Automatic Transmission) RPM 0 RPM
AT Input Speed (Automatic Transmission) RPM 675725 RPM
Engine Speed RPM 675725 RPM
Throttle Position Sensor Signal % 0.007.00%
AT Oil Temperature (Automatic Transmission) C Depends on conditions
TCM Status Transfer Low /Transfer High Transfer HI
Desired PC Solenoid Pressure (STH) kPa 34.397.0 kPa
Desired PC Solenoid Current (STH) mA 8351020 mA
PC Solenoid Actual Current (STH) mA 8351020 mA
Gear Ratio : 1 Depends on uper hood
TCC Slip Speed RPM 0 RPM
Shift Position Actual P/R/N/L/2/3 P
Inhibitor Switch P/R/N/L/2/3 P
Transmission Check Light On/Off Off
AT Oil Temperature Lamp (Automatic
Transmission) On/Off Off
3 rd Start Lamp On/Off Off
Power Lamp On/Off Off
Shift Solenoid S1 On/Off On
Shift Solenoid S2 On/Off On
Shift Solenoid S3 On/Off Off
Diag Switch Condition On/Off Off
Power Switch On/Off Off
Brake Switch On/Off Off
Cruise Switch On/Off Off
4L Signal On/Off Off
3 rd Start Switch On/Off Off
Coolant Temperature C Depends on conditions
Torque Request (timing Retard) CA 0 CA
Garage Shift Mode On/Off Off
CAN TPS % 0.00%
CAN Signal Valid Counter (ECM)
— 0  255
CAN Signal Valid Counter (TCM) — 0  255

TRANSMISSION CONTROL SYSTEM (AW30 –40LE) (V6 3.5L) 7A2-23

SNAPSHOT DISPLAY WITH TIS2000



Procedures for transferring and displaying Tech2
snapshot data by using TIS2000 [Snapshot Upload]
function is described below.
Snapshot data can be displayed with [Snapshot
Upload] function included in TIS2000.
By analyzing these data in various methods, trouble
conditions can be checked.
Snapshot data is displayed by executing the three steps
below shown:

1. Record the snapshot data, in Tech2.

2. Transfer the snapshot data to PC.

7A2-24 TRANSMISSION CONTROL SYSTEM (AW30 –40LE) (V6 3.5L)

After recording the snapshot in Tech2, transfer the data
from Tech2 to PC by the below procedures.
1.
Start TIS2000.
2.
Select [Snapshot Upload] on the TIS2000 start
screen.
3.
Select [Upload from trouble diagnosis tool
(transfer from diagnosis tester)] or click the
corresponding icon of the tool bar.
4.
Select Tech2, and transfer the recorded snapshot
information.
5.
Select the transferred snapshot.
6.
After ending transfer of the snapshot, data
parameter list is displayed on the screen.
3. Snapshot data is displayed with TIS2000
[Snapshot Upload] function.
Snapshot is stored in the PC hard disk or floppy disk,
and can be displayed any time.
Stored snapshot can be displayed by the below
procedures.
1.
Start TIS2000.
2.
Select [Snapshot Upload] on the TIS2000 start
screen.
3.
Select [Open the existing files] or click the
corresponding icon of the tool bar.
4.
Select the transferred snapshot.
5.
Open the snapshot, to display the data paramete
r
list on the screen.

TRANSMISSION CONTROL SYSTEM (AW30 –40LE) (V6 3.5L) 7A2-25

Graph display Values and graphs (Max. 3 graphs):



1.
Click the icon for graph display. [Graph
Parameter] window opens.
2.
Click the first graph icon of the window upper part,
and select one parameter from the list of the
window lower part. Selected parameter is
displayed nest to the graph icon. Graph division
can be selected in the field on the parameter right
side.
3.
Repeat the same procedures with the 2nd and 3rd
icons.
4.
After selecting all parameters to be displayed
(Max. 3 parameters), click [OK] button.
5.
Parameter selected is displayed in graph form on
the right of the data parameter on the screen.
6.
Graph display can be moved with the navigation
icon.

7.
For displaying another parameter by graph, click
the parameter of the list, drug the mouse to the
display screen while pressing the mouse button
and release the mouse button. New parameter is
displayed at the position of the previous
parameter. For displaying the graph display screen
in full size, move the cursor upward on the screen.
When the cursor is changed to the magnifying
glass form, click the screen. Graph screen is
displayed on the whole screen.

7A2-26 TRANSMISSION CONTROL SYSTEM (AW30 –40LE) (V6 3.5L)

Display of graphs on one screen (Max. 6 graphs):



1.
Click the 6 graph icon. [Graph Parameter] window
opens.
2.
Click the graph icon, select the parameter to be
displayed from the list and change divisions
according to necessity.
3.
Repeat the same procedures with the graph icons,
from the 2nd to 6th.
4.
Click the [OK] button to display.
5.
In this case, parameters are displayed only in
graph form. All parameters are displayed in one
graph.
6.
The graph display screen can be moved with the
navigation icon.