Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

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Throttle Position Sensor

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Voltage 0.20 - 1.25
Note: TPS voltage is checked at idle. The maximum TPS reading at idle is 1.25 volts.
0.33 - 1.33
Note: 1991 models only. TPS voltage is checked at idle. The maximum TPS reading, at idle, is 1.33 volts. The TPS has an auto zeroing feature. If the voltage reading is within the range of about 0.33 to 1.33 volts, the ECM will use that value as closed throttle. If the voltage reading is out of the auto zero range at closed throttle, check for a binding throttle cable or damaged linkage.