STARTING AND STOPPING PROCEDURES
Do Not Shift - Light
The "DO NOT SHIFT" light is located on dash-
board.
Illumination of this light, accompa-
nied by eight (8) seconds of short
beeps from the shifter, indicates
that shifts are being restricted. The
SELECT digit on the display will be
blank. Operation may continue in
order to reach service assistance. The ECU may
not respond to shifter requests, since operating
limitations are being placed on the transmission,
i.e. upshifts and downshifts may be restricted.
Direction changes will not occur.
The ECU will not respond to operator requests
while DO NOT SHIFT is indicated.
Any time this light has been illuminated, the ECU
will register a diagnostic code. It may be identi-
fied on the digital display and/or the Diagnostic
Data Reader (DDR).
Diagnostic Data Reader (DDR) (optional)
The purpose of the DDR is to assist in the instal-
lation checkout and the troubleshooting of mal-
functions as detected by the ECU. The DDR is a
portable microcomputerbased receiver/transmit-
ter/display unit. The DDR transmits and re-
ceives data to/from the ECU, processes the data
and displays appropriate information to the ser-
vicer. Operating instructions are supplied with
each DDR.
Diagnostic Codes
Illumination of the DO NOT SHIFT light during
vehicle operation (start-up), indicates that the
ECU has registered a diagnostic code. A sum-
mary of diagnostic codes with each associated
transmission response is shown on pages 5-10
through 5-20.
Diagnostic codes can be displayed either by the
DDR or on the digital display of the shifter. The
following information describes use of the diag-
nostic capabilities of the system without the
DDR.
Up to five (5) diagnostic codes can be registered
in the ECU at one time. In addition to the code
itself, additional information for each code is
available: whether or not any inhibits resulting
from the code are active; ignition cycle counts to
indicate the frequency of the code occurrence.
After a fixed number of ignition cycles, any code
will automatically disappear from memory if it
has not reoccurred.
The general procedure to display the codes is to
first enter the diagnostic mode. This is accom-
plished by pressing the upshift and downshift ar-
row buttons simultaneously on the push-button
shifter. The Diagnostic Display Mode may be
entered for viewing of codes at any speed.
Codes can only be cleared when the output
speed = 0 and no output speed sensor failure is
active. For each code stored in memory, begin-
ning with any code that is presently inhibiting the
transmission, the four (4) digits of the code and
the pertinent parameters are continuously
flashed on the display. Pressing the mode but-
ton once will cause the next code with pertinent
information to be displayed. Dashes indicate all
stored codes have been displayed.
To clear any active inhibits, the mode button
must be depressed and held for an extended
length of time. To clear the code from memory,
The mode button must be pressed and held for a
longer period of time. All active inhibits will also
be cleared during a normal powerdown (ignition
switched off followed by zero output and zero
engine speeds).
Importance of Proper Oil Level
1. Maintaining the proper oil level is very im-
portant. The transmission oil is used to apply
clutches and to lubricate and cool the compo-
nents. If the oil level is too low, the result can
be poor performance because clutches will not
receive adequate oil supply. If the oil level is
too high, overheating results from the oil being
churned and aerated.
2. Always check the oil level at least twice to en-
sure that an accurate check is obtained.
3. Transmission input speed and oil temperature
significantly affect the oil level. An increase in
input speed lowers the oil level; an increase in
oil temperature raises the oil level. Thus, the
oil level must always be checked with the en-
gine running at idle (approximately 500 rpm),
the parking brake applied, and the transmis-
sion in neutral. A final check of the oil level
must be made when the transmission reach-
es normal operating temperature (160 -
250°F; 70 - 120°C).
18016
4 - 6
To Next Page
Loading...
Need help?
General
