Throttle Position Sensor - Chrysler PT Cruiser Service & Repair Manual

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THROTTLE POSITION SENSOR

The throttle position sensor mounts to the side of

the throttle body (Fig. 63).

Fig. 63 Throttle Position Sensor—2.4L Engines

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

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

The throttle position sensor attaches to the side of

the throttle body (Fig. 64) and (Fig. 65).

(1) Remove the air cleaner lid and makeup air

hose. Loosen the clamp and relocate assembly.

(2) Remove the negative battery cable.

(3) Disconnect electrical connector from the throt-

tle position sensor.

(4) Remove throttle position sensor mounting

Fig. 64 Throttle Position Sensor and Idle Air Control

Fig. 65 THROTTLE BODY CONNECTIONS - 2.4L

1 - Purge Hose

2 - Electrical Connections

3 - Inlet Hose

(5) Remove throttle position sensor.

FUEL INJECTION

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