Turn Signal Switch: Testing and Inspection
This diagnosis covers mechanical problems only. Refer to ELECTRICAL DIAGNOSIS for turn signal switch electrical diagnosis.TURN SIGNAL WILL NOT STAY IN TURN POSITION
Inspect
^ Damaged turn signal switch.
TURN SIGNAL WILL NOT CANCEL
Inspect
^ Loose turn signal switch mounting screws.
^ Broken turn signal switch.
^ Damaged canceling cam.
TURN SIGNAL DIFFICULT TO OPERATE
Inspect
^ Damaged turn signal switch.
^ Loose turn signal switch mounting screws.
TURN SIGNAL WILL NOT INDICATE LANE CHANGE
Inspect
^ Damaged turn signal switch.
^ Pinched turn switch wires.
^ Burned out turn indicator panel lights.
HAZARD SWITCH CANNOT BE TURNED OFF
Inspect
^ Damaged turn signal switch.
HAZARD SWITCH WILL NOT STAY ON OR DIFFICULT TO TURN OFF
Inspect
^ Loose turn signal switch.
^ Hazard switch interference with other components.
^ Foreign material interference to hazard slider lever.
^ Damaged turn signal switch.
^ Misaligned column covers.
NO TURN SIGNAL LIGHTS
Inspect
^ Damaged turn signal bulbs.
^ Electrical short in wiring harness.
^ Inoperative turn signal flasher.
^ Loose turn signal switch connector.
^ Damaged turn signal switch.
TURN INDICATOR LIGHTS ON, BUT NOT FLASHING
Inspect
^ Bulb burnt out, either in front or back or side of vehicle.
^ Inoperative turn signal flasher.
^ Inoperative turn signal switch.
TURN INDICATOR LIGHTS OFF AND NOT FLASHING
Inspect
^ Damaged turn signal switch.
^ Burned-out or damaged turn signal bulb.
^ High resistance connection to ground at bulb socket.
^ Loose turn signal switch connector.
^ Faulty turn signal flasher.
NO TURN INDICATOR PANEL LIGHTS
Inspect
^ Burned out bulbs or opens, grounds in the wiring harness from the front turn signal bulb socket to the indicator lights.
TURN SIGNAL LIGHTS FLASH VERY RAPIDLY OR VERY SLOWLY
Inspect
^ Burned out or damaged turn signal bulbs.
^ Loose turn signal connection.
^ Faulty turn signal flasher.
^ Pinched or grounded wiring harness.
HAZARD SIGNAL LIGHTS WILL NOT FLASH - TURN SIGNAL FUNCTIONS NORMALLY
Inspect
^ Blown fuse.
^ Inoperative hazard warning flasher.
^ Loose turn signal switch connection.
^ Damaged turn signal switch.