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Throttle Position Sensor Signal

  1. Locate DLC1 connector in engine compartment. Refer to the Figure and Figure . Connect voltmeter between terminals TT and E1 of DLC connector. See Figure and Figure .
  2. Turn ignition on. Note that voltage gradually increases as accelerator is depressed. Voltage should gradually increase to about 6 volts with throttle fully open.
  3. If voltage does not change with throttle opening, check throttle position sensor. See THROTTLE POSITION SENSOR (TPS)  COMPONENT TEST under COMPONENT TESTING. If throttle position sensor is okay, check wiring circuit for throttle position sensor.
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