What make , model an year vehicle ? Most vehicles , 2000 an new ,these lights are controlled by a BCM - body control module . DTC'S - diagnostic trouble code's could be set to point into the proper diagnostic direction . Would need a professional type scan tool to read these code's ., not at advance or auto zone , they can not read body code's .
Most newer vehicles use a multifunction switch. Also known as a combination switch. Both the turn signals and emergency lights use this switch When the 4 way are on then the turn signals will not work. Work the hazard switch back and forth several times to see if connections will improve.
A partstore can help u for free. A good independent shop for svc if theyr oldtimers. Fir any issue email [email protected]
Might be a faulty hazard switch but bear in mind computerised vehicles often use unconventional circuits and so troubleshooting must begin with a circuit diagram.
Turn signal problems, and diagnosis can get confusing. Especially when a system shares wires and connections with the parking, warning, and braking light systems.
Most common problem sources include bulbs, wires, connectors, fuses, flasher units, and switches. So the average car owner can troubleshoot these faults with the use of a test light and, sometimes, a digital multimeter (DMM).
When dealing with any vehicle electrical circuit fault, it's a good idea to have the repair manual for the particular vehicle make and model you'll be working on. It helps you identify not only wires and components and their related connections, but how to access, troubleshoot and replace components, as necessary.
Furthermore, sometimes it is necessary to access the turn signal switch. You'll have to remove covers and, possibly, the steering wheel. If your vehicle has airbags, it is necessary to disable the passive restraint system (airbags) before working around the switch to prevent accidentally hitting an inertia sensor that may activate the airbags.
Always follow the instructions and warnings in the repair manual for your particular model to prevent an accident. Haynes manuals are popular and practical maintenance and troubleshooting guides. Get the one for your car make and model.
To make troubleshooting easier, this guide is divided into the most common types of turn signal system failures, troubleshooting procedures, and tips to guide you toward the potential fault much faster. Just look for the section heading that describes your particular problem.
SOURCE: Driver side signals only work when headlights are OFF
What may have happened is either the headlights wiring or the parking lights wiring somewhere along the wiring fused to the left turn signals wiring. Depending on if the turn signals go on when you put the parking lights on or the headlights on.
If the signals come on when you turn on the headlights than you only need to locate the light green wire that comes off the left turn signal harness.
Next follow that wire the entire way back to the firewall looking for another wire fused to that wire as you go.
If there are no signs of this you need to continue looking on the other side of the firewall all the way back to the turn signal and hazard flasher unit which is a black box that connects to a black harness located next to a grey harness behind the knee bolster.
But if the signals come on when you turn on the parking lights than you will also need to check the wiring from the rear left signal and follow that light green wire all the way back to the turn signal and hazard flasher unit.
This should fix your problem, but if not than your problem may lay within the the wiring between the turn signal/hazard switches and the turn signal and hazard flasher unit.
Also you may have a burnt circuit in the junction block. This block is where the light green from the rear left signal and front left signal meet. Don't have a description but if you cannot find it let me know and I will go out to the yard and look myself and let you know.
SOURCE: 2004 Chevy Malibu driver's side turn signal doesn't work
resistance from the bulbs activate the flasher, so if a light is out it won't flash, could be a ground or an open circuit, time to check wiring
SOURCE: tail lights work on both sides. turn signal and
check fuse to driver side turn signal lamp.check brake light bulb or replace bulb on driver side.also replace the front driver side turn signal bulb that is flashing fast.
SOURCE: turn signals and hazard don't work
On my 2005 Dodge Caravan the turn signals and wipers suddenly stopped working.
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