TPS Adjustment

NOTE: Ensure basic idle speed is set to specification before adjusting TPS. See BASIC IDLE SPEED under IDLE SPEED & MIXTURE. Perform all adjustments with engine at normal operating temperature, front wheels in straight-ahead position, cooling fan and all accessories off, and transmission in Park or Neutral.

TPS SPECIFICATIONS

Application

⁽¹⁾ Volts

All Models

.3-1.0

⁽¹⁾

At idle.

Disconnect TPS connector. Using external ohmmeter, measure resistance between TPS terminals No. 3 and 4. See Fig 1 . Insert .025" (.65 mm) feeler gauge between fixed speed adjusting screw and throttle lever.
Loosen TPS mounting screws and rotate TPS fully clockwise. Ensure there is continuity between terminals No. 3 and 4. Rotate TPS counterclockwise until there is no continuity and tighten screws. Install Test Harness (MB991348) between TPS and harness connector.
Turn ignition on. Using external voltmeter, measure TPS output voltage between terminals No. 2 and 4. See TPS SPECIFICATIONS table. If voltage is not within specification, check harness and sensor. See SYSTEM/COMPONENT TESTS article.

Fig 1: Identifying TPS Connector
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.