Test No. 21: Hazard/Turn Signal Flashing Frequency Is Abnormal

WARNING: This page is about a different car, the 2002 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.

Check all turn signal bulbs and replace any found defective. If all turn signal bulbs are okay, go to next step.
Check turn signal switch. See TURN SIGNAL SWITCH under COMPONENT TESTS under STEERING COLUMN SWITCHES - AVALON article in ACCESSORIES & EQUIPMENT. If turn signal switch is okay, go to next step.
Check wiring harness between hazard warning switch and turn signal flasher, between hazard warning switch and driver side junction block, and between driver side junction block and turn signals. Also check power and ground circuits. See EXTERIOR LIGHTS in SYSTEM WIRING DIAGRAMS article. After repairs have been made, perform confirmation test. See CONFIRMATION TEST .