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Throttle Position Switch (Metro M/T)

  1. With battery disconnected, disconnect switch electrical connection. Note TPS terminal identification. See Fig 1 . Install proper thickness feeler gauge between stop screw and lever.
  2. Using ohmmeter, check continuity between designated terminals. Adjust or replace switch if it is not within specification. See THROTTLE POSITION SWITCH CONTINUITY  .
THROTTLE POSITION SWITCH CONTINUITY (METRO M/T)

Application & Condition Continuity Reading
Between Terminals A & B (1) Continuity
Between Terminals B & C (1) No Continuity
Between Terminals A & C (1) No Continuity
Between Terminals A & B (2) No Continuity
Between Terminals B & C (2) No Continuity
Between Terminals A & C (2) No Continuity
Between Terminals A & B (3) No Continuity
Between Terminals B & C (3) Continuity
Between Terminals A & C (3) No Continuity
(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) With throttle valve fully opened.
Fig 1: Throttle Switch Terminal ID (Metro M/T)
G90H18009Courtesy of GENERAL MOTORS CORP.
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