LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2003 >> SC 430 >> Repair and Diagnosis >> External Pages >> Different car >> Section 430 (Troubleshooting) >> Problem Symptoms Table >> Light Control System
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Light Control System

WARNING: This page is about a different car, the 2003 Lexus LS 430. However, it is still accessible from the selected car via links, so may be relevant.
LIGHT CONTROL SYSTEM - TROUBLESHOOTING

Symptom Suspect Area See Section
Only one side headlight does not light up.
  1. Bulb
  2. Head light circuit
  3. Light control computer
  1. -
  2. HEADLIGHT CIRCUIT
  3. -
Only one side taillight does not light up.
  1. Bulb
  2. Taillight circuit
  1. -
  2. TAILLIGHT CIRCUIT
Only one side turn signal does not light up (Front side).
  1. Bulb
  2. Turn signal light circuit
  1. -
  2. TURN SIGNAL LIGHT CIRCUIT
Only one side turn signal does not light up (Back side).
  1. Bulb
  2. Turn signal light circuit
  1. -
  2. TURN SIGNAL LIGHT CIRCUIT
Each interior light does not light up.
  1. Illumination light circuit (each bulb)
  1. ILLUMINATION (DOOR COURTESY SWITCH SIGNAL) CIRCUIT
Only one stop light does not light up.
  1. Bulb
  2. Stop light circuit
  1. -
  2. STOP LIGHT CIRCUIT
Only one back-up light does not light up.
  1. Bulb
  2. Back-up light circuit
  1. -
  2. BACK-UP LIGHT CIRCUIT
Only one front fog light does not light up.
  1. Bulb
  2. Front fog light circuit
  1. -
  2. FRONT FOG LIGHT CIRCUIT
scientia non olet · About LEMON Manuals