TP Sensor Adjustment
NOTE:
Ensure basic idle speed is set to specification before adjusting TP sensor. 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.
- Disconnect TP sensor connector. Using jumper wires, connect an external ohmmeter between TP sensor terminals No. 3 and 4.
- Loosen TP sensor mounting screws and rotate TP sensor fully counterclockwise. Ensure there is continuity between terminals No. 3 and 4. Rotate TP sensor clockwise until there is no continuity and tighten screws. Install Test Harness (MB991348 ) between TP sensor and harness connector.
- Turn ignition on. Using external voltmeter, measure TP sensor output voltage between terminals No. 2 and 4. If voltage is not .4-1.0 volt, check harness and sensor. See DTC P0120 in TESTS W/CODES - 2.4L article.