LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 1997 >> SC 300 Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests >> Engine Sensors & Switches >> Throttle Position (TP) Sensor
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Throttle Position (TP) Sensor

NOTE: Vehicles with Traction Control System (TRAC) are equipped with a main TP sensor and a sub-TP sensor. The following procedure applies to main TP sensor. For sub-TP sensor, see SUB-THROTTLE POSITION (SUB-TP) SENSOR .

Disconnect TP sensor connector. Measure resistance between specified terminals of TP sensor connector. See TP SENSOR RESISTANCE  table. See Figure. If resistance is not as specified, adjust TP sensor. See THROTTLE POSITION (TP) SENSOR in ADJUSTMENTS article. Recheck resistance. If resistance is still not as specified, replace TP sensor.

TP SENSOR RESISTANCE

Throttle Plate Position (1) TP Sensor Terminals Ohms
Throttle Fully Closed VTA1 & E2 340-6300
.016" (.40 mm) (2) IDL1 & E2 500 Or Less
(3) IDL1 & E2 Infinite (Open)
Throttle Fully Open VTA1 & E2 2400-11,200
All Positions VC & E2 3100-7200
(1) Disconnect vacuum hose from throttle opener. Apply vacuum to throttle opener to allow throttle to fully seat.
(2) Insert feeler gauge between throttle lever and throttle stop screw.
(3) Insert a .024" (.60 mm) feeler gauge between throttle lever and throttle stop screw.
scientia non olet · About LEMON Manuals