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Throttle Position Sensor (TPS)

NOTE: To identify throttle position sensor terminals, see Fig 1 .
THROTTLE POSITION SENSOR (TPS) RESISTANCE (A/T)

Condition Resistance (Ohms)
Between Terminals A & B (1) Continuity
Between Terminals A & B (2) No Continuity
Between Terminals A & B (3) Continuity
Between Terminals A & D (3) 4370-8130
Between Terminals A & C (3) 240-1140
Between Terminals A & C (4) 3170-6600
(1) With .012" (.30 mm) feeler gauge installed between stop screw and lever.
(2) With .035" (.89 mm) feeler gauge installed between stop screw and lever.
(3) Throttle valve at idle position.
(4) Throttle valve at fully open position.
Fig 1: Throttle Position Sensor Terminal ID (A/T)
G90G18008Courtesy of GENERAL MOTORS CORP.
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