Chrysler PT Cruiser. Manual — part 474
miles) of usage, update the mileage and vehicle iden-
tification number (VIN) in the new PCM. Use the
DRBIII
t scan tool to change the mileage and VIN in
the PCM. If this step is not done a Diagnostic Trou-
ble Code (DTC) may be set. Refer to the appropriate
Powertrain Diagnostic Manual and the DRBIII
t scan
tool.
The PCM attaches to a bracket which attaches to
the dash panel welded brackets (Fig. 10).
(1) Remove the air cleaner lid, disconnect the inlet
air temperature sensor and makeup air hose (Fig.
11).
(2) Remove the negative battery cable (Fig. 12).
(3) Unlock the PCM connector by pulling on the
tab on the end of the PCM connector (Fig. 13).
Fig. 10 PCM LOCATION
Fig. 11 AIR BOX COVER
Fig. 12 NEGATIVE BATTERY CABLE
Fig. 13 UNLOCKING PCM CONNECTOR
8E - 12
ELECTRONIC CONTROL MODULES
PT
POWERTRAIN CONTROL MODULE (Continued)
(4) Remove electrical connector from the PCM
(Fig. 14).
(5) Remove attaching nuts for PCM to bracket
(Fig. 15).
(6) Lift PCM up to remove it from vehicle.
REMOVAL - 2.0, 2.4, and 2.4L Turbo
(1) Disconnect the negative battery cable.
(2) Lift vacuum line out from behind the upper
support bracket (Fig. 16) and (Fig. 17).
Fig. 14 PCM CONNECTOR
Fig. 15 PCM LOCATION
Fig. 16 Powertrain Control Module
Fig. 17 VACUUM LINES
PT
ELECTRONIC CONTROL MODULES
8E - 13
POWERTRAIN CONTROL MODULE (Continued)
(3) Unlock and disconnect the 3 or 4 electrical con-
nectors (Fig. 18) from the Powertrain Control Module
(PCM).
(4) Remove the clutch reservoir and relocate (Fig.
19).
(5) Remove the 3 mounting screws (Fig. 20) and
(Fig. 21) from the PCM mounting bracket and
remove PCM and bracket assembly (Fig. 22).
Fig. 18 ELECTRICAL CONNECTORS
1 - Electrical Connectors
Fig. 19 CLUTCH RESERVOIR
Fig. 20 PCM MOUNTING SCREWS
1 - Mounting Screws
2 - PCM Bracket Screws
Fig. 21 PCM MOUNTING Screw AND LOCATION TAB
8E - 14
ELECTRONIC CONTROL MODULES
PT
POWERTRAIN CONTROL MODULE (Continued)
(6) Remove the 3 screws from the PCM bracket to
PCM (Fig. 23).
INSTALLATION
INSTALLATION - 1.6L
The PCM engine control strategy prevents reduced
idle speeds until after the engine operates for 320 km
(200 miles). If the PCM is replaced after 320 km (200
miles) of usage, update the mileage and vehicle iden-
tification number (VIN) in the new PCM. Use the
DRBIII
t scan tool to change the millage and VIN in
the PCM. If this step is not done a Diagnostic Trou-
ble Code (DTC) may be set. Refer to the appropriate
Powertrain Diagnostic Manual and the DRBIII
t scan
tool.
The PCM attaches to a bracket which attaches to
the dash panel welded bracket (Fig. 10).
(1) Install PCM. Tighten mounting nuts to 10.7
N·m (95 ins. lbs.) (Fig. 15).
(2) Attach electrical connectors to PCM (Fig. 14).
(3) Lock the PCM connector (Fig. 13).
(4) Install the negative battery cable (Fig. 12).
(5) Install the air cleaner lid, connect the inlet air
temperature sensor and makeup air hose (Fig. 11).
INSTALLATION - 2.0, 2.4, and 2.4L TURBO
(1) Install the PCM bracket and 3 screws to the
PCM (Fig. 23) and tighten to 11.8 N·m (105 in. lbs.).
(2) Install the PCM and bracket assembly and
locate the bracket on the tab (Fig. 21).
(3) Install the 3 mounting screws to the PCM
mounting bracket (Fig. 20) and tighten to 10.7 N·m
(95 in. lbs.).
NOTE: The electrical connector for the PCM are
COLOR Coded.
(4) Connect and lock the 3 or 4 electrical connec-
tors to the Powertrain Control Module (PCM) (Fig.
18).
(5) Relocate and install the clutch reservoir (Fig.
19).
(6) Connect the negative battery cable.
SENTRY KEY IMMOBILIZER
MODULE
DESCRIPTION
The Sentry Key Immobilizer Module (SKIM) (Fig.
24) contains a Radio Frequency (RF) transceiver and
a microprocessor. The SKIM retains in memory the
ID numbers of any Sentry Key that is programmed
to it. The maximum number of keys that may be pro-
grammed to each module is eight (8). The SKIM also
communicates over the PCI bus with the Powertrain
Control Module (PCM), the instrument cluster, and
the DRB III
t scan tool. The SKIM transmits and
receives
RF
signals
through
a
tuned
antenna
enclosed within a molded plastic ring formation that
is integral to the SKIM housing. When the SKIM is
properly
installed
on
the
steering
column,
the
antenna ring fits snugly around the circumference of
the ignition lock cylinder housing (Fig. 25). If this
ring is not mounted properly, communication prob-
lems may arise in the form of transponder-related
faults.
For added system security, each SKIM is pro-
grammed with a unique
9Secret Key9 code. This code
is stored in memory and is sent over the PCI bus to
the PCM and to each key that is programmed to
Fig. 22 PCM REMOVAL/INSTALLATION
Fig. 23 PCM AND MOUNTING BRACKET
PT
ELECTRONIC CONTROL MODULES
8E - 15
POWERTRAIN CONTROL MODULE (Continued)
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