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-3A: CHECKING PCM POWER & GROUND CIRCUITS
1999 Dodge and Ram Dakota SLT, 2D Pickup, 3.9 X, 4WD, Standard
NTC-3A: Checking Pcm Power & Ground Circuits
1999 Dodge and Ram Dakota SLT, 2D Pickup, 3.9 X, 4WD, StandardSECTION NTC-3A: Checking Pcm Power & Ground Circuits
- Turn ignition off. Disconnect PCM connectors. PCM is located in engine compartment. See PCM LOCATION table under SYSTEM DIAGNOSTICS. Clean and/or repair connectors as necessary. Using a 12-volt test light connected to ground, probe PCM connector, B+ circuit. For wire color, see WIRING DIAGRAMS article. If test light illuminates brightly, go to next step. If test light does not illuminate brightly, repair open B+ circuit. Perform TEST VER-2A.
- Ensure ignition is off. Ensure PCM connectors are still disconnected. Turn ignition on, with engine off. Using 12-volt test light connected to ground, probe PCM connector, fused ignition switch output circuit. For wire color, see WIRING DIAGRAMS article. If test light illuminates brightly, go to next step. If test light does not illuminate brightly, repair open fused ignition switch output circuit. Perform TEST VER-2A.
- Turn ignition off. Ensure PCM connectors are still disconnected. Using 12-volt test light connected to ground, probe both PCM connector, ground circuits. For wire color, see WIRING DIAGRAMS article. If test light illuminates brightly on both circuits, go to next step. If test light does not illuminate brightly on both circuits, repair open ground circuit(s). Perform TEST VER-2A.
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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.