* Ignition Switch: This is the most common culprit. The ignition switch itself may be faulty, failing to send power to the rest of the ignition system when the key is turned.
* Ignition Wiring: Check all the wiring between the ignition switch, the ignition control module (if equipped), the coil, and the distributor. Look for broken wires, corroded connections, or loose terminals. A common failure point is the harness near the steering column.
* Ignition Control Module (ICM): (If your Dakota has one; some models did, some didn't. Check your specific model's wiring diagram.) The ICM is a computer that controls the ignition timing and signals the coil to fire. A failed ICM will prevent power reaching the coil.
* Fuse: Check the fuse(s) related to the ignition system. Your owner's manual will show you which fuses are responsible for the ignition.
* Neutral Safety Switch (NSS): On automatic transmission models, this switch prevents the engine from starting unless the transmission is in Park or Neutral. A faulty NSS can prevent power from reaching the ignition system.
* Cranking Motor/Battery: While less likely to directly cut power to the coil and distributor, a weak battery or failing starter motor could prevent sufficient voltage from reaching the ignition system, especially if other components are drawing high amperage. Test the battery voltage and cranking amperage.
* Relay: Some systems use relays in the ignition circuit. A faulty relay will prevent power from reaching the coil and distributor.
Troubleshooting Steps:
1. Check the fuses: This is the easiest and quickest step.
2. Visual Inspection: Carefully inspect all wiring from the ignition switch to the coil and distributor. Look for damage, corrosion, or loose connections.
3. Voltage Testing: Use a multimeter to check for power at the various points in the ignition circuit (ignition switch output, ICM input/output, coil input). This requires a wiring diagram to identify the correct wires and connections. Be extremely cautious when working with electricity.
4. Component Testing: Once you've narrowed it down, test the ignition switch, ICM (if applicable), and other components using a multimeter or a known good replacement part.
Important Note: A wiring diagram specific to your 1997 Dodge Dakota is crucial for proper troubleshooting. You can find these online through repair manuals (like a Haynes or Chilton manual) or sometimes on forums dedicated to Dodge Dakotas. Using a diagram will allow you to correctly identify wires and test for voltage at various points. Without a diagram, you're working blindly and could damage components.
