Chrysler 300M 2002 Service Manual page 264

LH
POWERTRAIN CONTROL MODULE (Continued)
• Manifold absolute pressure sensor
• Throttle position sensor
• Linear EGR solenoid
• Battery temperature
• Knock sensor
• Crankshaft position sensor
• Camshaft position sensor
STANDARD PROCEDURE
STANDARD PROCEDURE - OBTAINING
DIAGNOSTIC TROUBLE CODES
BULB CHECK
Key on: Bulb illuminated until vehicle starts, as
long as all once per trip (readiness) monitors com-
pleted. If monitors have not been completed, then:
Key on: bulb check for about 8 seconds, lamp then
flashes if once per trip (readiness) monitors have not
been completed until vehicle is started, then MIL is
extinguished.
OBTAINING DTC'S USING DRB SCAN TOOL
(1) Connect the DRB scan tool to the data link
(diagnostic) connector. This connector is located in
the passenger compartment; at the lower edge of
instrument panel; near the steering column.
(2) Turn the ignition switch on and access the
"Read Fault" screen.
(3) Record all the DTC's and "freeze frame" infor-
mation shown on the DRB scan tool.
(4) To erase DTC's, use the "Erase Trouble Code"
data screen on the DRB scan tool. Do not erase any
DTC's until problems have been investigated
and repairs have been performed.
OBTAINING DTC'S USING IGNITION KEY
(1) Cycle the ignition key On - Off - On - Off - On
within 5 seconds.
(2) The Odometer will show the P-code for the
DTC code number. Refer to the Emission section for
the DTC chart for a detailed explanation of the DTC
codes.
(3) If no DTC's are present, the cluster will display
one of two texts: "P1684" and "done" or only "done".
• P1684 is only a status and indicates that the
PCM memory has been cleared within the last 50
ignition cycles and does not indicate a problem.
• done indicates that NO DTCs are present and
the procedure is complete.
STANDARD PROCEDURE - PINION FACTOR
PROCEDURE
The vehicle speed readings for the speedometer are
taken from the output speed sensor. The PCM must
ELECTRONIC CONTROL MODULES 8E - 27
be calibrated to the different combinations of equip-
ment available. Pinion Factor allows the technician
to set the Powertrain Control Module initial setting
so that the speedometer readings will be correct.
This procedure must be performed if the
Powertrain Control Module has been replaced.
Failure to perform this procedure will result in
an inoperative speedometer.
To properly read or reset the Pinion Factor, it is
necessary to use a DRB scan tool. Perform the follow-
ing steps with the DRB scan tool to read or reset the
Pinion Factor:
(1) Plug the DRB scan tool into the data link con-
nector located under the instrument panel.
(2) Select the Transmission menu.
(3) Select the Miscellaneous menu.
(4) Select Pinion Factor. Then follow the instruc-
tions on the DRB scan tool screen.
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
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 DRBIII Scan Tool is required to view and/or
restart the TCC Break-In cycle.
(1) Connect the DRBIII Scan Tool to the vehicle
diagnostic connector.
(2) Navigate to "TCC Break-In" via Transmission/
Transmission Control Module/Miscellaneous.