Table of Contents
Advertisement
14 - 38
FUEL INJECTION
THROTTLE CONTROL CABLE (Continued)
INSTALLATION
(1) From the engine compartment, push the pedal
end fitting through the dash panel, seat the grom-
met, then push the cable dash fitting into the grom-
ment.
(2) Install the cable's throttle body end-fitting into
the cable mounting bracket on the engine.
(3) On 4 cylinder engines install throttle cable
routing clip to bracket on fuel rail (Fig. 38), and
other clip to the shocktower.
(4) From inside the vehicle, hold up the pedal and
install throttle cable and pedal retainer in the upper
end of the pedal lever.
(5) At the dash panel, install the cable retainer
clip between the end of the throttle cable dash fitting
and grommet (Fig. 37).
(6) From the engine compartment, rotate the
throttle lever wide open and install the throttle cable
(Fig. 35) or (Fig. 36).
THROTTLE POSITION SENSOR
DESCRIPTION
The throttle position sensor mounts to the side of
the throttle body.
The Throttle Position Sensor (TPS) connects to the
throttle blade shaft. The TPS is a variable resistor
(potentiometer) that provides the PCM with an input
signal (voltage). The signal represents throttle blade
position. As the position of the throttle blade
changes, the resistance of the TPS changes.
OPERATION
The signal represents throttle blade position. As
the position of the throttle blade changes, the resis-
tance of the TPS changes.
The PCM supplies approximately 5 volts to the
TPS. The TPS output voltage (input signal to the
powertrain control module) represents throttle blade
position. The TPS output voltage to the PCM varies
from approximately 0.6 volt at minimum throttle
opening (idle) to a maximum of 4.5 volts at wide open
throttle.
Along with inputs from other sensors, the PCM
uses the TPS input to determine current engine oper-
ating conditions. The PCM also adjusts fuel injector
pulse width and ignition timing based on these
inputs.
REMOVAL
REMOVAL - 4 CYLINDER
(1) Disconnect the negative battery cable.
(2) Disconnect the electrical connector to throttle
position sensor.
(3) Remove the 2 screws for the throttle position
sensor.
(4) Remove the throttle position sensor.
REMOVAL - 2.7L
(1) Remove the negative battery cable.
(2) Remove the throttle body (Refer to 14 - FUEL
SYSTEM/FUEL INJECTION/THROTTLE BODY -
REMOVAL)
(3) Remove the TPS mounting screws (Fig. 39).
Fig. 39 Idle Air Control Motor and Throttle Position
1 - THROTTLE POSITION SENSOR
2 - IDLE AIR CONTROL MOTOR
(4) Remove the TPS.
Sensor
JR
Advertisement
Table of Contents
