Chrysler Stratus Convertible. Manual — part 29
RADIATOR FAN RELAYS—PCM OUTPUT
DESCRIPTION
The radiator fan relays are located in the PDC.
The inside top of the PDC cover has a label showing
relay and fuse location.
OPERATION
The PCM energizes the radiator fans through
either the low or high speed radiator fan relay. The
PCM controls the ground circuit for the coil side of
the relay. Power for both relay coils is supplied
through a 10 amp fuse in the PDC. Power for both
relay contacts is supplied power through a 40 amp
fuse in the PDC. Refer to the Wiring Diagrams for
circuit information.
The PCM monitors the A/C compressor discharge
(high side) pressure through the air conditioning
pressure transducer. Depending on engine coolant
temperature and A/C system high side pressure, both
fans operate at either low or high speed.
TACHOMETER—PCM OUTPUT
DESCRIPTION
Refer to the Instrument panel System for more
information.
OPERATION
The tachometer receives its information across the
CCD Bus from the Body Control Module (BCM).
Information on engine RPM is transmitted from the
Powertrain Control Module (PCM) across the CCD
Bus to the BCM. The BCM calculates the position of
the tachometer pointer based on the input from the
PCM and adjusts the position of the gauge pointer to
the necessary position. This signal is sent over the
CCD Bus to the instrument cluster.
5-VOLT SUPPLY—PCM OUTPUT
OPERATION
The PCM supplies 5 volts to the following sensors:
• A/C pressure transducer
• Engine coolant temperature sensor
• Manifold absolute pressure sensor
• Throttle position sensor
• Linear EGR solenoid
8-VOLT SUPPLY—PCM OUTPUT
OPERATION
The PCM supplies 8 volts to the crankshaft posi-
tion sensor, camshaft position sensor.
THROTTLE BODY
DESCRIPTION
The throttle body mounts to the intake manifold.
The throttle position sensor and idle air control
motor attach to the throttle body (Fig. 13).
OPERATION
At above idle conditions, air flow through the
throttle body is controlled by a cable operated throt-
tle blade. During closed throttle idle conditions, the
idle air control motor control air flow. Refer to Idle
Air Control Motor in this section.
REMOVAL AND INSTALLATION
THROTTLE BODY—2.0L ENGINES
REMOVAL
(1) Remove the negative battery cable.
(2) Remove air inlet resonator as described in this
section.
(3) Remove the throttle control shield.
(4) Remove throttle cable from the throttle body
lever (Fig. 14) and (Fig. 15).
(5) Compress the retaining tabs on the cable and
slide cable out of bracket.
(6) If equipped with speed control, remove speed
control cable from throttle lever by sliding clasp out
hole used for throttle cable.
(7) Remove EVAP purge hose from nipple on throt-
tle body.
(8) Remove
2
screws
holding
cable
mounting
bracket and support bracket.
Fig. 13 Throttle Body—2.0L Engines
1 – THROTTLE POSITION SENSOR
2 – IDLE AIR CONTROL MOTOR
3 – THROTTLE BODY
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FUEL SYSTEM
14 - 33
DESCRIPTION AND OPERATION (Continued)
(9) Remove throttle body mounting bolts.
(10) Lift throttle body far enough to remove con-
nectors from the throttle position sensor and idle air
control motor. Remove throttle body.
(11)
2.0L The rubber O-ring gasket on the intake
manifold is reusable. Wipe the O-ring clean before
installing throttle body (Fig. 16).
INSTALLATION
(1) Attach electrical connectors to idle air control
motor and throttle position sensor.
(2) Position throttle body on intake and install
mounting bolts. Do Not tighten bolts at this time.
(3) Install throttle cable bracket. Do Not tighten
bolts at this time.
(4) Tighten throttle body bolts to 28.5
64 N·m (250
635 in. lbs.) torque.
(5) Tighten throttle cable bracket bolts to 11.75
62.25 N·m (105 620 in. lbs.) torque.
(6) Install EVAP purge hose to throttle body nip-
ple.
(7) Install cable housing(s) retainer tabs into
bracket.
(8) Install throttle body cables by rotating the
throttle lever forward to the wide open position.
(9) Install air inlet resonator as described in this
section.
(10) Install throttle control shield. Tighten screw
to 5.6 N·m (50 in. lbs.).
(11) Install the negative battery cable.
THROTTLE POSITION SENSOR (TPS)—2.0L
The throttle position sensor attaches to the side of
the throttle body (Fig. 17).
REMOVAL
(1) Remove the negative battery cable.
(2) Remove throttle body. Refer to Throttle Body in
this section.
(3) Disconnect electrical connector from idle air
control motor and throttle position sensor.
(4) Remove
throttle
position
sensor
mounting
screws.
(5) Remove throttle position sensor.
INSTALLATION
(1) The throttle shaft end of the throttle body
slides into a socket in the TPS (Fig. 18). The socket
has two tabs inside it. The throttle shaft rests
Fig. 14 Throttle Cable Attachment to Throttle Body
1 – SPEED CONTROL CABLE
2 – THROTTLE CABLE
3 – THROTTLE LEVER
Fig. 15 Disconnecting Throttle Cable
1 – TABS
2 – CABLE CLASP
Fig. 16 Re-Usable Throttle Body Gasket
1 – RE-USABLE GASKET
2 – INTAKE MANIFOLD
14 - 34
FUEL SYSTEM
JX
REMOVAL AND INSTALLATION (Continued)
against the tabs. When indexed correctly, the TPS
can rotate clockwise a few degrees to line up the
mounting screw holes with the screw holes in the
throttle body. The TPS has slight tension when
rotated into position. If it is difficult to rotate the
TPS into position, reinstall the sensor with the throt-
tle shaft on the other side of the tabs in the socket of
the TPS. Tighten mounting screws to: 2.0 L = 5.3
N·m (45 in. lbs.) 2.4 L = 6.2 N·m (55 in. lbs.) torque.
(2) After installing the TPS, the throttle plate
should be closed. If the throttle plate is open, install
the sensor on the other side of the tabs in the socket.
(3) Attach electrical connectors to idle air control
motor and throttle position sensor.
(4) Install throttle body. Refer to Throttle Body in
this section.
(5) Install the negative battery cable.
IDLE AIR CONTROL MOTOR—2.0L
The idle air control motor attaches to the side of
the throttle body (Fig. 19).
REMOVAL
(1) Remove throttle body. Refer to Throttle Body in
this section.
(2) Disconnect electrical connector from idle air
control motor and throttle position sensor.
(3) Remove idle air control motor mounting screws.
(4) Remove idle air control motor. Ensure O-ring is
removed with the motor.
INSTALLATION
(1) The new idle air control motor has a new
O-ring installed on it. If pintle measures more than 1
inch (25 mm) it must be retracted. Use the DRB AIS
Motor Open/Close Test to retract the pintle (battery
must be connected.)
(2) Carefully place idle air control motor into
throttle body.
(3) Install mounting screws. Tighten screws to:
2.0L = 5.3 N·m (45 in. lbs.) torque.
(4) Attach electrical connectors to idle air control
motor and throttle position sensor.
(5) Install throttle body. Refer to Throttle Body in
this section.
MAP/IAT SENSOR—SOHC
The MAP/IAT sensor attaches to the intake mani-
fold plenum (Fig. 20).
Fig. 17 Throttle Position Sensor and Idle Air Control
Motor
1 – IDLE AIR CONTROL MOTOR
2 – THROTTLE POSITION SENSOR
Fig. 18 Throttle Position Sensor Installation
1 – THROTTLE SHAFT
2 – TABS
Fig. 19 Throttle Position Sensor and Idle Air Control
Motor—2.0L
1 – IDLE AIR CONTROL MOTOR
2 – THROTTLE POSITION SENSOR
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FUEL SYSTEM
14 - 35
REMOVAL AND INSTALLATION (Continued)
REMOVAL
(1) Remove the negative battery cable.
(2) Disconnect the electrical connector from the
MAP/IAT sensor.
(3) Remove sensor mounting screws.
(4) Remove sensor.
INSTALLATION
(1) Insert sensor into intake manifold while mak-
ing sure not to damage O-ring seal.
(2) Tighten mounting screws to 2 N·m (20 in. lbs)
torque for plastic manifold and 3 N·m (30 in. lbs.) for
aluminum manifold.
(3) Attach electrical connector to sensor.
(4) Install the negative battery cable.
POWERTRAIN CONTROL MODULE
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
DRB scan tool to change the millage and VIN in the
PCM. If this step is not done a Diagnostic Trouble
Code (DTC) may be set. Refer to the appropriate
Powertrain Diagnostic Manual and the DRB scan
tool.
The PCM attaches to a bracket between the air
cleaner housing and Power Distribution Center
(PDC).
REMOVAL
(1) Disconnect
negative
cable
from
auxiliary
jumper terminal (Fig. 21).
(2) Disconnect both 40-way connectors from PCM.
(3) Remove screws attaching PCM to bracket (Fig.
22).
(4) Lift PCM up to remove it from vehicle.
INSTALLATION
(1) Install PCM. Tighten mounting screws.
(2) Attach both 40-way connectors to PCM.
(3) Connect negative cable to auxiliary jumper ter-
minal.
Fig. 20 MAP/IAT Sensor—SOHC
1 – MAP/AIR TEMPERATURE SENSOR
2 – PCV VACUUM NIPPLE
3 – INTAKE MANIFOLD
Fig. 21 Auxiliary Jumper Terminal
1 – AUXILIARY JUMPER TERMINAL
2 – LEFT STRUT TOWER
3 – AIR CLEANER HOUSING
Fig. 22 PCM Bracket Screws
1 – POWERTRAIN CONTROL MODULE BRACKET SCREWS
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FUEL SYSTEM
JX
REMOVAL AND INSTALLATION (Continued)
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