necessary position. This signal is sent over the PCI
Bus to the instrument cluster.
TORQUE MANAGEMENT
OPERATION
The PCM receives the torque management input
from the transmission control module. The PCM
receives the input when the transmission shifts
gears. In response, the PCM shuts off a number of
fuel injectors when the transmission shifts gears.
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.
REMOVAL AND INSTALLATION
THROTTLE BODY—2.7L ENGINE
REMOVAL
(1) Disconnect negative cable from battery
(2) Disconnect air plenum from throttle body.
(3) Hold throttle lever in wide open position.
Remove throttle cable and speed control cables from
throttle arm.
(4) Remove throttle cable bracket.
(5) Remove EGR tube from intake manifold to
EGR valve.
(6) Disconnect electrical connectors from throttle
body.
(7) Remove the throttle body support bracket from
the bottom of the throttle body.
(8) Remove 3 throttle body bolts.
(9) Remove purge hose.
(10) Remove throttle body.
(11) Clean mating surfaces.
INSTALLATION
(1) Install throttle body and bolts.
(2) Tighten bolts to 11.8 N·m (105 in. lbs.) torque.
(3) Install the throttle body support bracket to the
bottom of the throttle body. Tighten the bolts to 27.1
N·m (20 ft. lbs.) torque.
(4) Hold throttle lever in wide open throttle posi-
tion. Install throttle cable and speed control cable.
(5) Install throttle cable bracket and tighten bolts.
(6) Install EGR tube from intake manifold to EGR
valve. Tighten bolts.
(7) Install air plenum and tighten clamp.
(8) Connect negative cable to battery.
THROTTLE BODY—3.2/3.5L ENGINE
REMOVAL
(1) Disconnect negative cable from battery
(2) Remove wiper arms.
(3) Remove cowl screen.
(4) Remove cowl plenum.
(5) Disconnect air plenum from throttle body.
(6) Remove throttle cable bracket.
(7) Disconnect electrical connectors.
(8) Disconnect top vacuum hose.
(9) Remove the throttle body support bracket from
the bottom of the throttle body.
(10) Remove 3 throttle body bolts.
(11) Hold throttle lever in wide open position.
Remove throttle cable and speed control cables from
throttle arm.
(12) Clean mating surfaces.
INSTALLATION
(1) Hold throttle lever in wide open throttle posi-
tion. Install throttle cable and speed control cable.
(2) Install throttle body and bolts.
(3) Tighten bolts to 11.8 N·m (105 in. lbs.) torque.
(4) Install the throttle body support bracket to the
bottom of the throttle body. Tighten the bolts to 27.1
N·m (20 ft. lbs.) torque.
(5) Install vacuum hose.
(6) Install throttle cable bracket and tighten bolts.
(7) Install air plenum and tighten clamp.
(8) Install cowl plenum.
(9) Install cowl screen.
(10) Install wiper arms.
(11) Connect negative cable to battery.
THROTTLE POSITION SENSOR (TPS)—2.7L
ENGINE
REMOVAL
(1) Remove the negative battery cable.
(2) Disconnect the TPS electrical connector (Fig.
16).
(3) Remove the TPS mounting screws.
(4) Remove the TPS.
14 - 36 FUEL SYSTEM LH
DESCRIPTION AND OPERATION (Continued)
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