Chrysler PT Cruiser 2001 Service Manual Supplement page 2059

PT
TRANSMISSION CONTROL MODULE (Continued)
STANDARD PROCEDURE - QUICK LEARN
PROCEDURE
The quick learn procedure requires the use of the
DRBIII® scan tool. This program allows the elec-
tronic transaxle system to recalibrate itself. This will
provide the best possible transaxle operation.
NOTE: The quick learn procedure should be per-
formed if any of the following procedures are per-
formed:
• Transaxle Assembly Replacement
• Transmission Control Module Replacement
• Solenoid/Pressure Switch Assembly Replacement
• Clutch Plate and/or Seal Replacement
• Valve Body Replacement or Recondition
To perform the Quick Learn Procedure, the follow-
ing conditions must be met:
• The brakes must be applied
• The engine speed must be above 500 rpm
• The throttle angle (TPS) must be less than 3
degrees
• The
shift lever
prompted to shift to overdrive
• The shift lever position must stay in overdrive
after the Shift to Overdrive prompt until the DRB
indicates the procedure is complete
• The calculated oil temperature must be above
60° and below 200°
(1) Plug the DRB scan tool into the diagnostic con-
nector. The connector is located under the instrument
panel.
(2) Go to the Transmission screen.
(3) Go to the Miscellaneous screen.
(4) Select Quick Learn Procedure. Follow the
instructions of the DRB to perform the Quick Learn
Procedure.
STANDARD PROCEDURE - TCC BREAK-IN
VIEW/RESTART PROCEDURE
The Transmission Control Module (TCM) employs
a strategy which modifies torque converter clutch
(TCC) operation. This strategy conditions the torque
converter clutch disc for optimum converter clutch
engagement and feel throughout the life of the trans-
axle. The cycle inhibits FEMCC until six hours of
PEMCC operation have taken place, or the vehicle
has been driven 6,035 km (3750 miles). The cycle
automatically terminates when either the time or
2001 PT CRUISER
position must stay until
ELECTRONIC CONTROL MODULES
mileage has been achieved, however, the mileage
may vary slightly from vehicle to vehicle.
The TCC break-in cycle must be restarted using
the DRB Scan Tool, and upon:
• Replacement of TCM on vehicle with less than
6,035 km (3750 miles) or less than 6 hours of
PEMCC operation
• Replacement of torque converter assembly at
any vehicle mileage
NOTE: Failure to restart the TCC Break-In Cycle
upon TCM replacement in vehicles with less than
six hours of PEMCC or less than 6,035 km (3750
miles), or upon torque converter replacement at any
mileage, may result in vehicle shudder during cer-
tain operating conditions.
Procedure
The DRB Scan Tool is required to view and/or
restart the TCC Break-In cycle.
(1) Connect the DRB Scan Tool to the vehicle diag-
nostic connector.
(2) Navigate to "TCC Break-In" via Transmission/
Transmission Control Module/Miscellaneous.
(3) View or Start TCC Break-In as prompted by
DRB menu.
REMOVAL
NOTE: If the transmission control module (TCM) is
being replaced with a new or replacement unit, the
Pinion Factor and Quick Learn procedures must be
performed. (Refer to 8 - ELECTRICAL/ELECTRONIC
CONTROL MODULES/TRANSMISSION
MODULE/STANDARD PROCEDURE/PINION FACTOR
PROCEDURE)(Refer to 8 - ELECTRICAL/ELEC-
TRONIC CONTROL MODULES/STANDARD PROCE-
DURE/QUICK LEARN PROCEDURE)
NOTE: If the TCM is being replaced and has
recorded less than six hours of PEMCC operation,
AND the vehicle has less than 6,035 km (3750
miles), the Torque Converter Clutch (TCC) Break-In
cycle must be restarted (Refer to 8 - ELECTRICAL/
ELECTRONIC CONTROL
PROCEDURE/TCC BREAK-IN VIEW/RESET PROCE-
DURE)
8E - 7
CONTROL
MODULES/STANDARD