2007 ISUZU KB P190 display

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Page 3800 of 6020

ISUZU KB P190 2007 Workshop Repair Manual Automatic Transmission – 4L60E – Electrical Diagnosis Page 7C2–14
3 Tech 2 Information
3.1 Tech 2 Diagnostics
Tech 2, with the appropriate software, cables and adapters,
when connected t

Automatic Transmission – 4L60E – Electrical Diagnosis Page 7C2–14
3 Tech 2 Information
3.1 Tech 2 Diagnostics
Tech 2, with the appropriate software, cables and adapters,
when connected to the serial data link connector (DLC) can
read seat and exterior rear-view mirror serial data. The DLC
is attached to the instrument panel trim retainer beneath the
steering wheel.
1 DLC
2 DLC Adapter
3 DLC Cable
4 Tech 2
For additional general information on connecting and
operating Tech 2, refer to 0C Tech 2.
Figure 1A7 – 3
Test Modes
Tech 2 has six test modes for diagnosing the transmission. To get to these various test modes, on Tech 2 select:
Diagnostics / Model Year / Model / Vehicle Type / Transmission / Automatic Transmission
and follow Tech 2’s prompts. This will then display the following menu operations.
Diagnostic Trouble Codes
If Diagnostic Trouble Codes is selected, a selection list is displayed which contains:
• Read DTC Information – Once selected, both current and history diagnostic trouble codes (DTCs) stored in the
transmission control module will be displayed.
• Clear Engine & Transmission DTC(s) – Once selected, DTCs stored in the transmission control module (TCM)
and engine control module (ECM) memory may be cleared.
• Freeze Frame / Failure Records – Shows Freeze Frame / Failure Records information. Freeze Frame / Failure
Records are types of snapshots stored in the memory of the TCM and contain data parameters from the TCM at
the time the DTC set.
NOTE
For a complete list of TCM DTCs, refer to
4.8 Diagnostic Trouble Code List. For
further information on Tech 2 and it functions,
refer to 0C Tech 2.
Data Display
If Data Display is selected, a selection list is displayed which contains:
• Transmission Data – Once is selected, a list of transmission components and the TCM inputs are displayed along
with their status.
• TCC Data – Once selected, displays specific parameter information about the torque converter clutch controlling
devices and their circuits.
• 1-2 Shift Data – Once selected, displays specific parameter information about the 1-2 shift solenoid valve (shift
solenoid A) and its circuits.

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ISUZU KB P190 2007

Page 3801 of 6020

ISUZU KB P190 2007 Workshop Repair Manual Automatic Transmission – 4L60E – Electrical Diagnosis Page 7C2–15
• 2-3 Shift Data – Once this mode is selected, displays specific parameter information about the 2-3 shift solenoid
valv

Automatic Transmission – 4L60E – Electrical Diagnosis Page 7C2–15
• 2-3 Shift Data – Once this mode is selected, displays specific parameter information about the 2-3 shift solenoid
valve (shift solenoid B) and its circuits.
• 3-4 Shift Data – Once selected, displays information on 3-4 shift timing.
• 3-2 Downshift Data – Once selected, displays information on 3-2 downshift timing.
• Pressure Control Solenoid Data – Once selected, displays specific parameter information about the PC solenoid
and its circuits.
• Transmission Adapts – Once selected, it has further sub menus:
• 1-2 Adapt Data – In this mode Tech 2 continuously monitors and displays 1-2 TAP cell data parameters.
• 2-3 Adapt Data –In this mode Tech 2 continuously monitors and displays 2-3 TAP cell data parameters.
• 3-4 Adapt Data –In this mode Tech 2 continuously monitors and displays 3-4 TAP cell data parameters.
• Steady State Adapt Data – In this mode Tech 2 continuously monitors and displays Steady State TAP data
parameters.
• System Identification: In this mode, Tech 2 will display the transmission identification screen. The following items
will be displayed; Identifier, Partnumber, Hardware Partnumber, Alpha Code, Software Version Number, Software
Partnumber, VIN Digit 1-10, VIN Digit 11-17.
NOTE
Further information about the Data Display mode
and the data parameter is contained in
3.2 Data Display.
Snapshot
In this test mode, Tech 2 captures TCM data before and after a forced manual trigger.
Additional Functions
If Additional Functions is selected, a selections list is displayed which contains:
• System Identification – In this mode, Tech 2 will display the transmission identification screen. The following items
will be displayed; Identifier, Partnumber, Hardware Partnumber, Alpha Code, Software Version Number, Software
Partnumber.
Miscellaneous Tests
If Miscellaneous Functions is selected, a selections list is displayed which contains:
• TCC Solenoid –Tech 2 can command the TCC solenoid on and off. Tech 2 will display whether the TCC solenoid
is active or inactive.
• TCC PWN Solenoid – Tech 2 can command the TCC PWM solenoid on and off. Tech 2 will display whether the
TCC PWM solenoid is active or inactive and torque percentage.
• TCC Apply – Tech 2 can command the TCC on when the vehicle is above 50 km/h.
• Shift Solenoid A – Tech 2 can command the shift solenoid A (1-2 shift solenoid) on and off.
• Shift Solenoid B – Tech 2 can command the shift solenoid B (2-3 shift solenoid) on and off.
• 3/2 Downshift Solenoid – Tech 2 can command the 3/2 downshift solenoid (3-2 shift solenoid) on and off.
• Gear Control – Tech 2 can incrementally command shift solenoid states to correspond to relative gear states. The
TCM will only allow single shift increments or decrements and does not allow a shift if it causes the engine RPM to
exceed a calibrated limit.
• Pressure Control Solenoid – This function allows the user to control state of the pressure control solenoid in
increments of 100 mA.
NOTE
For operating parameters of the
Miscellaneous Test, refer to 3.4 Miscellaneous Tests.

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Page 3802 of 6020

ISUZU KB P190 2007 Workshop Repair Manual Automatic Transmission – 4L60E – Electrical Diagnosis Page 7C2–16
Programming
If Programming is selected, a selection list is displayed which contains:
• Reset TAP Cells – This test a

Page 3803 of 6020

ISUZU KB P190 2007 Workshop Repair Manual Automatic Transmission – 4L60E – Electrical Diagnosis Page 7C2–17
Tech 2 Parameter Units Displayed Typical Data Value
High Side Driver 1 N/A N/A
TCC Solenoid On / Off Varies
TCC PWM Solen

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ISUZU KB P190 2007 Workshop Repair Manual Automatic Transmission – 4L60E – Electrical Diagnosis Page 7C2–18
Tech 2 Parameter Units Displayed Typical Data Value
Transmission Fluid Temp °C Varies
Estimated Gear Ratio Ratio 8.00:1

Page 3805 of 6020

ISUZU KB P190 2007 Workshop Repair Manual Automatic Transmission – 4L60E – Electrical Diagnosis Page 7C2–19
Tech 2 Parameter Units Displayed Typical Data Value
Vehicle Speed km/h 0
Estimated Gear Ratio Ratio 8.00:1
3-4 Shift Data

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ISUZU KB P190 2007 Workshop Repair Manual Automatic Transmission – 4L60E – Electrical Diagnosis Page 7C2–20
Pressure Control Solenoid Data Parameters
For definitions of the parameters in this table, refer to 3.3 Tech 2 Data Definiti

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ISUZU KB P190 2007 Workshop Repair Manual Automatic Transmission – 4L60E – Electrical Diagnosis Page 7C2–21
Tech 2 Parameter Units Displayed Typical Data Value
3-4 Shift Time Seconds Varies
3-4 Shift Error Seconds Varies
Current

Automatic Transmission – 4L60E – Electrical Diagnosis Page 7C2–21
Tech 2 Parameter Units Displayed Typical Data Value
3-4 Shift Time Seconds Varies
3-4 Shift Error Seconds Varies
Current TAP Cell 4-16 Varies
Throttle Position Percent Varies
3-4 Tap Cell (1 – 17) kPa Varies
Steady State Adapt Data
In this mode TECH 2 continuously monitors and displays Steady State TAP data parameters.
Steady State Adapt Data Parameters
For definitions of the parameters in this table, refer to 3.3 Tech 2 Data Definitions.
Tech 2 Parameter Units Displayed Typical Data Value
Current TAP Cell 4-16 Varies
Throttle Position Percent Varies
Gear (1-4) TAP Cell kPa Varies
TCC (1-4) TAP Cell kPa Varies
Reverse Gear TAP Cell kPA Varies
3.3 Tech 2 Data Definitions
1-2 Shift Error: This parameter displays the difference between the desired 1-2 shift time and the actual 1-2 shift time. A
positive number indicates a firm or fast shift and the actual shift time was shorter than the desired shift time. A negative
number indicates a soft or slow shift and the actual shift time was longer than the desired shift time. This value is only
accurate if the shift was adaptable.
1-2 Shift Time: This parameter displays the actual time of the last 1-2 shift. The shift time is based on the engine r.p.m.
drop after the commanded 1-2 shift. This value is only accurate if the shift was adaptable.
1-2 TAP Cell (1-17): This parameter displays the amount of transmission adaptive pressure (TAP), based on 17 Nm of
engine torque increment per cell, added to or subtracted from shift pressure during a 1-2 upshift. A positive number
indicates that long shifts have been detected and PC solenoid pressure has been added to decrease shift time. A
negative number indicates that short shifts have been detected and PC solenoid pressure has been subtracted to
increase shift time.
2-3 Shift Error: This parameter displays the difference between the desired 2-3 shift time and the actual 2-3 shift time. A
positive number indicates a firm or fast shift, the actual shift time was shorter than the desired shift time. A negative
number indicates a soft or slow shift, the actual shift time was longer than the desired shift time. This value is only
accurate if the shift was adaptable.
2-3 Shift Time: This parameter displays the actual time of the last 2-3 shift. The shift time is based on the engine r.p.m
drop after the commanded 2-3 shift. This value is only accurate if the shift was adaptable.
2-3 TAP Cell (1-17): This parameter displays the amount of transmission adaptive pressure (TAP), based on 17 Nm of
engine torque increment per cell, added to or subtracted from shift pressure during a 2-3 upshift. A positive number
indicates that long shifts have been detected and PC solenoid pressure has been added to decrease shift time. A
negative number indicates that short shifts have been detected and PC solenoid pressure has been subtracted to
increase shift time.
3-4 Shift Error: This parameter displays the difference between the desired 3-4 shift time and the actual 3-4 shift time. A
positive number indicates a firm or fast shift, the actual shift time was shorter than the desired shift time. A negative
number indicates a soft or slow shift, the actual shift time was longer than the desired shift time. This value is only
accurate if the shift was adaptable.
3-4 Shift Time: This parameter displays the actual time of the last 3-4 shift. The shift time is based on the engine r.p.m.
drop after the commanded 3-4 shift. This value is only accurate if the shift was adaptable.
3-4 TAP Cell (1-17): This parameter displays the amount of transmission adaptive pressure (TAP), based on 17 Nm of
engine torque increment per cell, added to or subtracted from shift pressure during a 3-4 upshift. A positive number
indicates that long shifts have been detected and PC solenoid pressure has been added to decrease shift time. A

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