TRANSMISSION CONTROL SYSTEM (4L30–E)
7A1–17
Diagnostic Trouble Codes
The purpose of the “Diagnostic Trouble Codes” mode is to
display stored PCM 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 PCM 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.
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 for
correct operation of electronic system actuators.
Lamps
You can operate the lamps by pressing the “ON” and
“OFF” buttons.
Preconditions: none
Solenoid
Solenoid 1-2/3-4, Solenoid 2-3, TCC Solenoid
You can operate the solenoids by pressing the “ON” and
“OFF” buttons.
Preconditions: P–N position, no vehicle speed, no engine
speed
Band Apply Solenoid
You can operate the solenoid by pressing the “ON” and
“OFF” buttons.
Preconditions: P-N position, idle engine speed, no vehicle
speed.
Pressure Control Solenoid (PCS)
You can set desired PCS Current using the “Increment”
(+20) and “Decrement” (–20) button. The PC Solenoid
Data informs about PCS Current, Pressure and Duty
Cycle.
Preconditions: P–N position, no engine speed, no vehicle
speed
Reset Oil Life Monitor
Displays parameter “Oil Life Monitor” and resets to 100%
if Yes-button is pressed on Reset-question. “No” leaves
test.
NOTE:
Freeze Frame (Powertrain DTC A/B Type)
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 MIL 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.
Failure Records (Powertrain DTC C/D Type)
Failure Records data is an enhancement of the OBD II
Freeze Frame feature. Failure Records store the same
vehicle information as does Freeze Frame, but it will store
that information for any fault which is stored in on- board
memory, while Freeze Frame sotres information only for
emission-related faults that commands the MIL on.