Isuzu KB P190. Manual — part 997

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

Once the test vehicle has been identified an
“Application Menu” screen appears. Please select the
appropriate application.

The following table shows, which functions are used for
the available equipment versions.

F0: Diagnostic Trouble Codes

F0: Read DTC Information

F1: Clear DTC Information

F1: Data Display

F2: Snapshot

F3: Actuator Test

F0: Solenoid 2-3 Test

F1: Solenoid 1-2/3-4 Test

F2: Pressure Control Solenoid (PCS)

F3: TCC Solenoid Test

F4: 3rd Start Lamp Test

F5: Power Lamp Test

F6: AT Oil Temperature Lamp Test

F7: Check Light Test

F4: Additional Functions

F0: Read ECU Identification

F5: Programming

F0: Program Vehicle Identification No.

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.

When “Diagnostic Trouble Codes” is selected an
“Application Menu” screen appears.

Read DTC Information

When “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.

When “Clear DTC Information” is selected, a “Clear
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.

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.

When “Data Display” is selected an “Application Menu”
appears. “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 Test

The purpose of “Actuator Test” mode is to check for
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 And
Erasing Freeze Frame Data for more detailed
information.

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

TRANSMISSION DATA

Scan Tool Parameter

Units Displayed

Typical Data Value at Engine Idle

Operating Conditions: Engine idling/ Engine coolant temperature is between 75 to 85

°C(167 to 185°F)/

Accelerator pedal is constant/ Neutral or Park/ Accessories OFF/ Vehicle located at sea level

Engine Coolant temperature

°C/°F

75 to 85

°C (167 to 185°F)

Engine Speed

RPM

700

Vehicle Speed

Km/h / MPH

0

Ignition Voltage

V

13.6

Accelerator Pedal Position Signal

%

0

Throttle Position

%

0

Accelerator Pedal Position Signal

During Cruise Control

% 0

Cruise Control

Inactive / Active

Inactive

Cruise Control OD Cancel Request

ON / OFF

OFF

Engine Warm Up Cycle Achieved

FALSE / TRUE

FALSE

Transmission Shift in Progress

Inactive / Active

Inactive

Garage Shift Control

Inactive / Active

Inactive

MIL Request Command

ON / OFF

OFF

Transmission Check Light

ON / OFF

OFF

Transmission Oil Temperature Lamp

ON / OFF

OFF

Power Drive Lamp

ON / OFF

OFF

3rd Start Lamp

ON / OFF

OFF

Transmission Fluid Temperature

°C/°F

70 to 80

°C (158 to 176°F)

AT Input Speed

RPM

625

AT Output Speed

RPM

0

Transmission Range

Park / Reverse /

Neutral / Drive 4 /

Drive 3 / Drive 2 /

Drive 1

Park

TR Switch P

ON / OFF

ON

TR Switch R

ON / OFF

OFF

TR Switch N

ON / OFF

OFF

TR Switch D

ON / OFF

OFF

TR Switch 3

ON / OFF

OFF

TR Switch 2

ON / OFF

OFF

TR Switch L

ON / OFF

OFF

Diagnostic Switch

Open / Close

Open

Brake Pedal Switch

ON / OFF

OFF

Power Drive Switch

ON / OFF

OFF

3rd Start Switch

ON / OFF

OFF

4 Wheel Drive Low

ON / OFF

OFF

Shift Solenoid 1 Command

ON / OFF

ON

Shift Solenoid 2 Command

ON / OFF

OFF

TCC Solenoid

Engaged / Disengaged

Disengaged

Downhill Mode

Inactive / Active

Inactive

Active Shift Mode

Normal Mode /

Power Mode /

3rd Gear Start /

Transfer 4L MODE

Hot 1 / Hot 2 /

UPHILL MODE 1 /
UPHILL MODE 2 /

Cruise MODE /

Warm Up MODE

Normal Mode

Estimated Gear Ratio

:1

7.97 : 1

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

Scan Tool Parameter

Units Displayed

Typical Data Value at Engine Idle

Desired PCS Pressure

kPa

32.0

Current Gear

Neutral / 1st / 2nd /

2nd L-Up / 3rd /

3rd L-Up / 4th /

4th L-Up

1st

Command Gear

Neutral / 1st / 2nd /

2nd L-Up / 3rd /

3rd L-Up / 4th /

4th L-Up

1st

PCS Desired Current

mA

976

PCS Actual Current

mA

976

Speed Ratio

0.89 : 1

TCC Slip Speed

rpm

75