Chrysler 300M 2002 Service Manual page 2817

GENERAL INFORMATION
then "Miscellaneous" functions, then "Quick
Learn". Follow the procedure instructions dis-
played on the DRBIII .
3.3.9 CLUTCH VOLUMES
The LR clutch volume is updated when doing a
2/1 or 3-1 coast down shift. The transmission
temperature must be between 21-49°C (70-120°F).
The clutch volume should be between 35 and 83.
The 2/4 clutch volume is updated when doing a
1-2 shift. The transmission temperature must be
above 43°C (110°F). The clutch volume should be
between 20 and 77.
The OD clutch volume is updated when doing a
2/3 shift. The transmission temperature must be
above 43°C (110°F). The clutch volume should be
between 40 and 150.
The UD clutch volume is updated when doing a
4/3 or 4/2 shift. The transmission temperature
must be above 43°C (110°F). The clutch volume
should be between 24 and 70.
3.3.10 ELECTRONIC PINION FACTOR
The transmission output speed signal supplies
distance pulses to the Powertrain Control Module
(PCM), which are used to calculate speed and
mileage. A pinion factor is stored in the PCM in
order to provide the appropriate distance pulses for
the vehicle. The pinion factor is programmed into
the PCM at the assembly plant.
Using the following steps, the pinion factor can
be checked and/or reset using the DRBIII :
1. Select Transmission system, then Miscella-
neous functions, then Pinion Factor. The
DRBIII will display the current tire size.
2. If the tire size is incorrect, press the Enter key
and then select the correct size.
3. Press the Page Back key to exit the reset
procedure.
Notes About Electronic Pinion Factor Features
The nature of the electronic pinion factor requires
that certain features must be taken into consider-
ation.
> If no pinion factor is stored in an installed
PCM, the vehicle speedometer will not oper-
ate, engine speed will be limited to 2300
RPM, and catalyst damage may occur.
> Selecting a wrong tire size will cause the
speedometer to be inaccurate and will also
cause any speed related features to operate
improperly.
NOTE: After replacing the PCM, you must
reprogram pinion factor
3.4 USING THE DRBIII
Refer to the DRBIII user's guide for instruc-
tions and assistance with reading trouble codes,
erasing trouble codes, and other DRBIII
tions.
3.5 DRBIII ERROR MESSAGES
Under normal operation, the DRBIII will dis-
play one of only two error messages:
– User−Requested WARM Boot
– User−Requested COLD Boot
If the DRBIII should display any other error
message, record the entire display and call the
S.T.A.R. Center.
3.5.1 DRBIII DOES NOT POWER UP
(BLANK SCREEN)
If the LED's do not light or no sound is emitted at
start up, check for loose cable connections or a bad
cable. Check the vehicle battery voltage. A mini-
mum of 11 volts is required to adequately power
the DRBIII .
If all connections are proper between the
DRBIII and the vehicle or other devices, and the
vehicle battery is fully charged, an inoperative
DRBIII may be the result of faulty cable or vehicle
wiring. For a blank screen, refer to the appropriate
Body Diagnostic manual.
3.5.2 DISPLAY IS NOT VISIBLE
Low temperatures will affect the visibility of the
display. Adjust the contrast to compensate for this
condition.
18
func-