Metro A/T

Remove air cleaner. Disconnect electrical connector from TPS. Loosen TPS retaining screws. Insert a .012" (.30 mm) feeler gauge between throttle lever and stop screw. Connect ohmmeter between terminals "A" and "B" of TPS. See Fig 1 .
Rotate throttle switch fully clockwise, then slowly counterclockwise until ohmmeter indicates continuity. Hold TPS and tighten retaining screws to 18 INCH lbs. (2 N.m). Remove feeler gauge. Ohmmeter should still indicate continuity.
Insert a .035" (.89 mm) feeler gauge between throttle lever and stop screw. Ohmmeter should indicate no continuity. Remove feeler gauge.
CAUTION: DO NOT use throttle stop screw to adjust throttle switch.
To check proper TPS switch operation, check resistance or continuity with selected feeler gauge thickness between throttle lever and stop screw. See THROTTLE POSITION SENSOR (TPS) RESISTANCE table.
Once properly adjuster, reinstall electrical connector and install air cleaner.

Fig 1: Throttle Position Sensor (TPS) Terminal ID (Metro With A/T)

Courtesy of GENERAL MOTORS CORP.

THROTTLE POSITION SENSOR (TPS) RESISTANCE

Application & Condition

Specification

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 Ohms

Between Terminals A & C ⁽³⁾

240-1140 Ohms

Between Terminals A & C ⁽⁴⁾

3170-6600 Ohms

⁽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.