1. The Simple Checks (Easiest First):
* Fuses: Check the owner's manual for the wiper fuse location and rating. Replace the fuse if it's blown. A blown fuse suggests a short circuit somewhere in the wiper system.
* Wiper Switch: Make sure the wiper switch itself is functioning correctly. Try different wiper speeds and intermittent settings. If other wipers work, but not this one, the problem is unlikely to be the switch.
* Wiper Fluid: While seemingly unrelated, an empty washer fluid reservoir can sometimes trigger a safety mechanism that prevents the wipers from operating (though less common on this particular area). Top off the fluid.
2. Investigating the Wiper Motor and Linkage:
* Wiper Motor: With the ignition on, listen carefully near the wiper motor (located under the hood, usually near the base of the windshield). You should hear a faint hum or whirring if the motor is receiving power. No sound indicates a potential motor failure or a wiring problem.
* Wiper Linkage: Inspect the wiper arm linkage visually. Look for any obvious signs of damage, broken parts, or binding. Make sure the arm moves freely and isn't seized. Try manually moving the wiper arm (carefully!) to check for binding.
3. Electrical Checks (Requires some basic electrical knowledge or a multimeter):
* Power to the Motor: If you have a multimeter, check for power at the wiper motor connector. You'll need to consult a wiring diagram to find the correct wires and ensure power is present when the switch is activated. Lack of power points to a wiring fault, a bad switch, or a faulty relay.
* Ground Connection: Ensure the wiper motor has a good ground connection. A poor ground can prevent the motor from working.
4. Relay and Wiring:
* Wiper Relay: The PT Cruiser likely uses a wiper relay. Its location can be found in the owner's manual or online (search for "2002 PT Cruiser wiper relay location"). Inspect it for damage, and test it if you have the tools and knowledge. A faulty relay is a common cause of wiper problems.
* Wiring Harness: Inspect the wiring harness leading to the motor for any damage, corrosion, or broken wires. Look closely near where the harness enters the firewall and near the motor itself.
5. Professional Help:
If you've checked all of the above and the problem persists, it's time to seek professional help. A qualified mechanic will have the tools and expertise to diagnose the issue more accurately. They may need to further test the motor, the wiper switch, or even trace the wiring harness more thoroughly.
Important Notes:
* Safety First: Always disconnect the battery negative terminal before working on any electrical components to prevent injury.
* Wiring Diagrams: A wiring diagram specific to your 2002 PT Cruiser is invaluable for tracing wires and identifying components. These can be found online through repair manuals or automotive forums.
By systematically checking these areas, you'll increase your chances of identifying and fixing the problem. Remember to start with the simplest checks before moving on to more complex troubleshooting steps.
