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