1. Check the Fuse(s):
* Locate the fuse box: Your Dakota will have an under-hood fuse box and likely an interior fuse box (usually under the dashboard). Consult your owner's manual to find the correct diagrams.
* Identify the blower motor fuse(s): The manual will show which fuse(s) control the blower motor. It might be a single fuse, or it could be a circuit breaker.
* Check the fuse(s): Look for a blown fuse (broken filament) or a tripped circuit breaker (popped-out). Replace any faulty fuses with ones of the same amperage rating.
2. Check the Blower Motor Resistor:
* Locate the resistor: This is a common failure point. It's usually located behind the glove box or under the dashboard, near the blower motor itself. Again, your owner's manual should help with this location.
* Inspect visually: Look for any obvious signs of damage (burnt components, melted plastic).
* Test for continuity (optional, but recommended): If you have a multimeter, you can test the resistance between the resistor's terminals. The resistance should fall within the range specified in your repair manual or a wiring diagram. If the resistance is infinite (open circuit) or extremely low (short circuit), the resistor is faulty and needs replacement.
3. Check the Blower Motor Switch:
* Test the switch: Try switching between the different blower speeds. If you have no power at any speed, the switch may be the problem.
* Advanced Testing (multimeter required): You'd need to test the switch for continuity at each speed setting with a multimeter, comparing your findings with wiring diagrams.
4. Check the Blower Motor itself (after eliminating other possibilities):
* Access the blower motor: This usually involves removing the glove box or other interior components. Consult a repair manual for your specific model.
* Visual Inspection: Look for anything obvious like broken wires, debris interfering with the fan blades, or a seized motor.
* Direct Power Test (Caution!): This is the final step and should only be done *after* you've ruled out other issues like the fuse, resistor, and switch. Disconnect the blower motor connector. Using jumper wires and your battery (with appropriate protection), apply power directly to the blower motor. Be extremely careful here because applying power incorrectly can damage the motor or other components. Observe if the motor spins. If it does, the motor itself is likely not the problem, and the issue lies elsewhere (wiring, switch, etc.). If it doesn't, the blower motor is probably the faulty component.
Important Considerations:
* Repair Manual: A repair manual specific to your 1993 Dodge Dakota is invaluable. It will provide diagrams, component locations, and troubleshooting steps.
* Safety: Always disconnect the battery's negative terminal before working with electrical components in your vehicle.
* Multimeter: A multimeter is a very helpful tool for diagnosing electrical problems.
If you are not comfortable performing these checks yourself, take your Dakota to a qualified mechanic for diagnosis and repair. Attempting electrical repairs without proper knowledge and safety precautions can be dangerous.
