LEMON Manuals: Even more car manuals for everyone
Home >> GMC >> 1991 >> Value Van 7.4 N >> Repair and Diagnosis >> External Pages >> Different car >> Section 29 (Engine Controls - Tests W/Codes - 3.3L Gasoline) >> Self-Diagnostic Tests >> Test NTC-5A - Checking TPS Calibration

Test NTC-5A - Checking TPS Calibration

WARNING: This page is about a different car, the 1995 Plymouth Voyager, 1995 Plymouth Grand Voyager, 1995 Dodge Grand Caravan, and 1995 Dodge Caravan. However, it is still accessible from the selected car via links, so may be relevant.
  1. Turn engine off. Turn ignition on. Using scan tool, read Throttle Position Sensor (TPS) voltage. Ensure throttle is fully closed and against throttle stop.
  2. If voltage is not one volt or less with throttle closed, replace TPS. Perform TEST VER-2. If voltage is one volt or less with throttle closed, watch voltage while slowly opening throttle wide open. If voltage change was not smooth, replace TPS. Perform TEST VER-2. If voltage change was smooth, go to next step.
  3. If maximum voltage was not at least 3.5 volts at wide open throttle, replace TPS. Perform TEST VER-2. If maximum voltage was at least 3.5 volts at wide open throttle, TPS is functioning properly. Test is complete.
scientia non olet · About LEMON Manuals