Throttle Position Sensor (Metro A/T)

Disconnect TPS electrical connection. Install proper thickness feeler gauge between stop screw and lever. Using ohmmeter, check continuity or resistance between designated terminals. Adjust or replace TPS if not within specification. See THROTTLE POSITION SENSOR (TPS) RESISTANCE table.

NOTE: See Fig 1 for terminal identification.

THROTTLE POSITION SENSOR (TPS) RESISTANCE

Condition

Resistance (Ohms)

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

Between Terminals A & C ⁽³⁾

240-1140

Between Terminals A & C ⁽⁴⁾

3170-6600

⁽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.

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

Courtesy of GENERAL MOTORS CORP.

THROTTLE POSITION SWITCH CONTINUITY (METRO M/T)

Condition

Resistance (Ohms)

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⁾	Throttle valve at fully open position.

Fig 2: Throttle Switch Terminal Id (Metro M/T)

Courtesy of GENERAL MOTORS CORP.