2007 ISUZU KB P190 ECO mode

7A2-16 TRANSMISSION CONTROL SYSTEM (AW30–40LE)
CAN bus systems in automatic
transmission control (AW30-40LE)
The automatic transmission control system in AW 30-
40LE uses high speed CAN bus system .The individual
CAN bus systems are connected via two interfaces and
can exchange information and data. This allows control
modules that are connected to different CAN bus
systems to communicate.
High speed CAN bus
Transmission control module in the vehicle that require
continuous, rapid communication are connected to the
high speed CAN bus. For example, the automatic
transmission is continuously notified of the current
engine load status. Since the automatic transmission
control module has to react immediately to load status
changes, rapid communication is required between the
engine control module and the automatic transmission
control module. The high speed CAN bus in the AW 30-
40LE is designed as a two-wire CAN bus (twisted pair).
The wires are shielded and twisted. The transfer rate is
500 K baud.





RUW 37ASF000401
Diagnosis
Electronic Diagnosis
How To Diagnose The Problem
1. To avoid incorrect diagnostics, this book needs to
be followed accurately. Unless stated, do not jump
directly to a section that could contain the
solution. Some important information may be
missed.
2. The sections in CAPITALS and bold are the main
sections that can be found in the contents.
3. The go to “SECTION” means to continue to check
going to the “section”.
4. The go through “SECTION” means to go through
the “section” and then to go back to the place the go
through was written.
5. BASIC ELECTRIC CIRCUITS:
You should understand the basic theory o
f
electricity. This includes the meaning of voltage,
amps, ohms, and what happens in a circuit with an
open or shorted wire. You should also be able to
read and understand wiring diagrams.
Check Trans Indicator
Find CHECK TRANS indicator and verify if it is
A. Flashing: Go to On-Board Diagnostic (OBD)
System Check.
B. Staying on: Go through “Check Trans” Check.
C. Is never “ON” when the ignition key is turned on: Go through “Check Trans” Check
D. Is “ON” during 3 seconds at ignition but “OFF” after: Normal operation. No DTC or malfunction.




RTW 77ASH000101



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TRANSMISSION CONTROL SYSTEM (AW30–40LE) 7A2-17
Normal





C07RY005-1
Abnormal






C07RY00042-1

On-Board Diagnostic (OBD) System Check
This test determines if the transmission or its input or
output connections or sensors are failing.
1. Connect the Tech 2: Go through Tech 2 Operating.
2. Turn on the ignition but not the engine.
3. Push “F0” on Tech 2 to see the Diagnostic Trouble Code (DTC):
4. Do you have a DTC? YES: write down all code numbers and do the DTC
CHECK
NO: the DTC can not help you find the problem.
1. Go through “Check Trans” Check
2. If it is flashing and the flash is 0.4 seconds “ON”
and 0.4 seconds “OFF”, this means that you
should have a DTC stored. Please recheck go
to On-Board Diagnostic (OBD) System Chec
k
and if you find the same problem, replace the
Transmission Control Module (TCM).
“Check Trans” Check
1. Indicator is “ON” during 3 seconds at ignition but it
is “OFF” after the engine starts. The indicator is
working normally go to On-Board Diagnostic
(OBD) System Check .




RTW 77ASH000101


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7A2-18 TRANSMISSION CONTROL SYSTEM (AW30–40LE)
Normal






C07RY005-1
2. Indicator is flashing and the flash is 0.4 seconds
“ON” and 0.4 seconds “OFF” always when ignition is
on (engine cranked or not). This means that there is
a malfunction. Go to On-Board Diagnostic (OBD)
System Check .
Abnormal






C07RY00042-1
3. Indicator is staying “ON” always when Ignition is
“ON”.
1. This means that connection between the lamp
and the indicator control unit is shorted to
ground.
2. Verify if instrument panel terminal 25 o
f
connector B–23 is shorted to ground.
3. Verify if the indicator control unit connector C–
95 terminal 3 is shorted to ground.
4. Verify that the instrument panel terminal 8 o
f
connector B–24 is connected to battery.
5. If a problem was solved: Go to Check Trans
Indicator .
NO: Replace Transmission Control Module
(TCM).
4. Indicator is staying “OFF” with the ignition “ON”
(engine “OFF”).
1. This means that connection between the lamp
and the indicator control unit is shorted to
battery or opened.
2. Verify if instrument panel terminal 25 o
f
connector B–23 is shorted to battery or open.
3. Verify if the indicator control unit connector C–
95 terminal 3 is shorted to battery or open.
4. Verify that the instrument panel terminal 25 o
f
connector B–23 is connected to battery. If not,
check the meter fuse and the connections
(terminal 2 of connector H–7) voltage.



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TRANSMISSION CONTROL SYSTEM (AW30–40LE) 7A2-23
Diagnostic Trouble Codes
The purpose of the “Diagnostic Trouble Codes” mode is
to display stored TCM trouble codes.
W hen “Diagnostic Trouble Codes” is selected an
“Application Menu” screen appears.
Read DTC Information
W hen “Read 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.
Requested emission-related DTCs
Clear DTC Information
The purpose of the “Clear DTC Information” mode is to
command the clearing of stored TCM trouble codes.
W hen “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: W hen the trouble has not been repaired and
the trouble code cannot be erased, check the vehicle
again.
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 displayed through F1 mode.
W hen “Data Display” is selected an “Application Menu”
appears. “Transmission Data Display”.
See “Transmission Data” on next page.
Snapshot
W hen “Snapshot” is selected an “Application Menu”
appears.
W hen “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.
W hen a snapshot is taken, it is recorded onto the
PCMCIA memory card. W hen the Tech 2 is powered
down. Snapshots are not lost.
Actuator Test
The purpose of “Actuator Test” mode is to check fo
r
correct operation of electronic system actuators.
Solenoid 2-3 Test, Solenoid 1-2/3-4 and Test TCC
Solenoid Test
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” and
“OFF” button. The PCS Data informs about PCS
Current, Pressure and Duty Cycle.
Preconditions: P–N position, no engine speed, no
vehicle speed
3rd Start Lamp Test, Power Lamp Test, AT Oil
Temperature Lamp Test and Check Light Test
You can operate the lamps by pressing the “ON” and
“OFF” buttons.
Preconditions: none
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 Trans
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.


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7A2-26 TRANSMISSION CONTROL SYSTEM (AW30–40LE)
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.




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TRANSMISSION CONTROL SYSTEM (AW30–40LE) 7A2-27
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 (transfe
r
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 following
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.



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TRANSMISSION CONTROL SYSTEM (AW30–40LE) 7A2-35
Clear DTC
NOTE: If you clear the DTC (Diagnostic Trouble
Codes) you will not be able to read any codes recorded
during the last occurrence.
NOTE: To use the DTC again to identify a problem, you
will need to reproduce the fault or the problem. This
may require a new test drive or just turning the ignition
on (this depends on the nature of the fault).
1. IF you have a Tech 2:
1. Connect the Tech 2 and perform the Tech 2
Operating.
2. Push “F1: Clear DTC Information” in the
Application Menu and answer “Yes” to the
question “Do you want to clear DTC's?”
a. W hen a malfunction still exists and the Tech 2 displays “AW 30-40 CODES NOT
CLEARED”. This means that the problem is
still there or that the recovery was not done.
Please go to DTC Check.
b. W hen a malfunction has been repaired and the recovery is done the Tech 2 displays
“AW 30-40LE CODES CLEARED”.
2. W hen you have no Tech 2, the storaged trouble
codes can be cleared by shorting the terminals
No.11 and No.4 or 5 (ground) of data link connecto
r
with a lead wire for 1 ∼ 6 seconds.
DTC Check
1. Diagnostic Trouble Codes (DTC) have been
identified by Tech 2.
2. You have written the list of the DTCs. The order o
f
the malfunctions has no meanings for this TCM.
Usually only one or two malfunctions should be set
for a given problem.
3. Check directly the DTCs you identified. The DTCs
are sorted by number. Refer to Diagnostic Trouble
Code (DTC) Identification in this section.
Self-diagnosis code (Flash code) display
• The stored trouble codes can be identified by
shorting the terminal No. 11 and No. 4 or No. 5
(ground) data link connector with a lead wire.

Indication Method:
1. Terminal No. 11 and No. 4 or No. 5 (ground) data
link connector are short circuited.
2. Turn the key switch to the ON position.
3. If no trouble code exists, the normal code (12) is
indicated repeatedly.
Data Link Connector Short Circuit






Flash Code Illumination Pattern


0.4 Sec 0.4 Sec
.
ON
OFF


3.2 Sec.
1.2 Sec.
3.2 Sec.


0.4 Sec 0.4 Sec
.
ON
OFF


3.2 Sec. 1.2 Sec. 3.2 Sec.


Self-diagnosis Start
Normal Code (12)
Trouble Code (32)


4. If several trouble codes have occurred at a time,
each code is indicated three times in numerical
order.

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7A2-36 TRANSMISSION CONTROL SYSTEM (AW30–40LE)
Trouble Code Clear Method:
If you have Tech 2:
Follow the procedure "DIAGNOSIS WITH TECH 2" in
this manual.
If you have no Tech 2:
Remove ECM (B) fuse (10A) for at least 10 seconds
with the ignition switched off.

NOTE:
If you clear the DTC you will not be able to read an
y
codes recorded during the last occurrence.
To use the DTC again to identify a problem, you will
need to reproduce the fault or the problem. This ma
y
require a new test drive or just turning the key switch on
(this depends on the nature of the fault).



12141414323232
In case DTC 14 & 32 are stored:


TCM Precaution
The TCM can be damaged by:
1. The electrostatic discharge
2. The short circuit of some terminals to voltage or to
ground.
Electrostatic Discharge Damage Description: 1. Electronic components used to control systems are often designed to carry very low voltage, and
are very susceptible to damage caused b
y
electrostatic discharge. It is possible for less than
100 volts of static electricity to cause damage to
some electronic components. By comparison, it
takes as much as 4,000 volts for a person to even
feel the zap of a static discharge.
2. There are several ways for a person to become statically charged. The most common methods o
f
charging are by friction and induction. An example
of charging by friction is a person sliding across a
car seat, in which a charge of as much as 25,000
volts can build up. Charging by induction occurs
when a person with well insulated shoes stands
near a highly charged object and momentaril
y
touches ground. Charges for the same polarity are
drained off, leaving the person highly charged with
the opposite polarity. Static charges of either type
can cause damage, therefore, it is important to use
care when handling and testing electronic
components.
NOTE: To prevent possible electrostatic discharge
damage:
1. Do not touch the TCM connector pins or soldered
components on the TCM circuit board.
2. Be sure to follow the guidelines listed below i
f
servicing any of these electronic components:
3. Do not open the replacement part package until it is time to install the part.
4. Avoid touching electrical terminals of the part.
5. Before removing the part from its package, ground
the package to a known good ground on the
vehicle.
6.
Always touch a known good ground before handling
the part. This step should be repeated before
installing the part if the part has been handled while
sliding across the seat, while sitting down from a
standing position or while walking some distance.
Information On TCM
1. The Transmission Control Module (TCM) is located
in the place of a clutch pedal and is the control
center of the electronic transmission control system.



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