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Home >> Lexus >> 1993 >> SC 400 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests >> Engine Sensors & Switches >> Throttle Position Sensor (TPS)
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Throttle Position Sensor (TPS)

Turn ignition off. Disconnect TPS connector. Using a DVOM, measure resistance between specified TPS terminals in TPS SPECIFICATIONS table. See Fig 1.

TPS SPECIFICATIONS

TPS Terminals Conditions Ohms
ES300 
VTA & E2 (1) Zero 280-6400
IDL & E2 (1) .014" (.35 mm) 500 Or Less
IDL & E2 (1) .028" (.71 mm) Infinity
VTA & E2 Throttle Valve Fully Open 2000-11,600
VC & E2 N/A 2700-7700
GS300 
VTA & E2 (1) Zero 340-630
IDL & E2 (1) .016" (.41 mm) 500 Or Less
IDL & E2 (1) .024" (.60 mm) Infinity
VTA & E2 Throttle Valve Fully Open 2400-11,200
VC & E2 N/A 3100-7200
LS400 
VTA & E2 (1) Zero .34-6.3
IDL & E2 (1) .016" (.41 mm) 500 Or Less
IDL & E2 (1) .026" (.65 mm) Infinity
VTA & E2 Throttle Valve Fully Open 2400-11,200
VC & E2 N/A 3100-7200
SC300 
VTA & E2 (1) Zero .2-.8
IDL & E2 (1) .018" (.45 mm) 2300 Or Less
IDL & E2 (1) .022" (.55 mm) Infinity
VTA & E2 Throttle Valve Fully Open 3300-10,000
VC & E2 N/A 4000-9000
SC400 
VTA & E2 (1) Zero .2-.8
IDL & E2 (1) .016" (.41 mm) 2300 Or Less
IDL & E2 (1) .026" (.65 mm) Infinity
VTA & E2 Throttle Valve Fully Open 3300-10,000
VC & E2 N/A 4000-9000
(1) Clearance between throttle lever and stop screw.
Fig 1: Identifying TPS Connector Terminals
G90B18854Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002