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Home >> Toyota >> 1993 >> Tercel Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests >> Introduction >> Engine Sensors & Switches >> Throttle Position Sensor (TPS)
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Throttle Position Sensor (TPS)

  1. Turn ignition off. Disconnect electrical connector from TPS on throttle body. Note terminal identification. See Fig 1.
  2. Insert specified thickness feeler gauge between throttle stop screw and throttle lever and check resistance or continuity. See appropriate TPS RESISTANCE SPECIFICATIONS  table. Replace or adjust TPS if not within specification.
NOTE: Some models require that vacuum be applied to throttle opener before checking TPS. See appropriate TPS RESISTANCE SPECIFICATIONS table.
Fig 1: Checking Throttle Position Sensor
G93G79638Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
TPS RESISTANCE SPECIFICATIONS

Application Type Clearance In. (mm) Terminals Tested Ohmmeter Reading
1.5L (1) 0 (0) VTA & E2 200-800
" .020 (.51) IDL & E2 2300 Or Less
" .028 (.71) IDL & E2 No Continuity
" Fully Open VTA & E2 3300-10,000
" " VC & E2 3000-7000
(1) On California models, apply vacuum to throttle opener before checking TPS.