Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSDODGE AND RAM1999DAKOTA SLT, 2D PICKUP, 3.9 X, 4WD, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMENGINE CONTROLS - TESTS W/CODESSELF-DIAGNOSTIC TESTSNTC-7A: CHECKING TP SENSOR CALIBRATION
1999 Dodge and Ram Dakota SLT, 2D Pickup, 3.9 X, 4WD, Standard
NTC-7A: Checking TP Sensor Calibration
1999 Dodge and Ram Dakota SLT, 2D Pickup, 3.9 X, 4WD, StandardSECTION NTC-7A: Checking TP Sensor Calibration
- Start engine and allow it to idle. Using scan tool, monitor engine speed (RPM) while wiggling Throttle Position (TP) sensor connector and wiring harness. TP sensor is located on throttle body. If RPM changes while wiggling connector and wiring harness, repair connector and wiring harness where wiggling caused RPM to change. Perform TEST VER-2A. If RPM does not change while wiggling connector and wiring harness, go to next step.
- Turn engine off. Turn ignition on, with engine off. Using scan tool, monitor TP sensor voltage while wiggling TP sensor connector and wiring harness. If TP sensor voltage changes while wiggling connector and wiring harness, repair connector and wiring harness where wiggling caused TP sensor voltage to change. Perform TEST VER-2A. If TP sensor voltage does not change while wiggling connector and wiring harness, go to next step.
- Turn ignition off. Visually inspect related connectors and wiring harness. Repair connectors and wiring harness as necessary. Perform TEST VER-2A. If connectors and wiring harness are okay, go to next step.
- Turn ignition on with engine off. Using scan tool, monitor TPS voltage while slowly moving throttle from closed position to fully open position. If TPS voltage changes smoothly, go to next step. If TPS voltage does not change smoothly, replace TPS. Perform TEST VER-2A.
- Ensure ignition is on, with engine off. Close throttle. Ensure throttle is fully closed and against throttle stop. Using scan tool, read TPS voltage with throttle fully closed. If TPS voltage is 1.5 volts or more on AN body, replace TPS. Perform TEST VER-2A. If TPS voltage is less than specified, go to next step.
- Ensure ignition is on, with engine off. Close throttle. Ensure throttle is fully closed and against throttle stop. Using scan tool, read TPS voltage with throttle fully closed. If TPS voltage is 1.5 volts or more on AN body, replace TPS. Perform TEST VER-2A. If TPS voltage is less than specified test is complete.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.