FixVault

System Tests: Notes

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.
NOTE: Before proceeding with any system test, ensure proper trouble shooting procedure was performed. See TROUBLE SHOOTING . Symptom indices for headlight, horn, ignition switch, key unlock warning switch, and taillight systems are under SYSTEM TESTS under BODY CONTROL SYSTEMS - AVALON article under COMMUNICATION DEVICES in ACCESSORIES & EQUIPMENT.
SYMPTOM INDEX (FOG LIGHTS)

Symptom Perform Test
Fog Lights Do Not Operate With Light Control Switch In "HEAD" Position (Headlights Operate) TEST NO. 1 
Fog Lights Do Not Operate With Light Control Switch In "HEAD" Position (Headlights Do Not Operate) (1)Diagnose Headlight System
Only One Fog Light Does Not Operate TEST NO. 2 
(1) See BODY CONTROL SYSTEMS - AVALON article under COMMUNICATION DEVICES in ACCESSORIES & EQUIPMENT.