Ranger 2WD V6-182 3.0L (1995)
Figure 1 is a graph that shows how the TPS output voltage changes between engine idle and WOT conditions.
The TPS voltage increases when the throttle is depressed. Idle is typically in the 0.4 volt to 1.2 volt range. (Refer to idle voltage range chart.) As the TPS
senses plate rotation toward Wide Open Throttle (WOT), the voltage increases. WOT is typically in the 4.0 volt range. A voltmeter, NGS, or SBDS is
the recommended test equipment for checking the TPS output.
CAUTION:
MANY VOLTMETERS WILL AUTOMATICALLY CHANGE RANGES WHEN MEASURING TPS OUTPUT FROM IDLE TO WOT. WHEN
A VOLTMETER IS USED TO MEASURE TPS OUTPUT FROM IDLE TO WOT, THE METER SCALES OR CHANGES RANGES
AUTOMATICALLY. THERE MAY BE AN ERRONEOUS METER DISPLAY UNTIL THE VOLTMETER HAS LOCKED TO THE
APPROPRIATE VOLTAGE READING. THE ERRONEOUS METER DISPLAY DOES NOT REPRESENT A DEFECTIVE TPS.
NOTE:
IT IS RECOMMENDED THAT THE "RANGE LOCK' FEATURE ON MANY METERS BE SET FOR CHECKING TPS VOLTAGE.
