SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSTOYOTA2004MATRIX XR, FWD, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 214 (AUTOMATIC HEADLIGHTS & LIGHTING SYSTEMS)DESCRIPTION & OPERATIONAUTOMATIC LIGHT CONTROL
2004 Toyota Matrix XR, FWD, Standard

Automatic Light Control

2004 Toyota Matrix XR, FWD, StandardSECTION Automatic Light Control
WARNING: This page is about a different car, the 2003 Lexus IS 300 and 2002 Lexus IS 300. However, it is still accessible from the selected car via links, so may be relevant.

The automatic light control sensor converts the intensity of the illumination into frequency and inputs it to the anti-theft ECU. When the light control switch is set at AUTO, the signal is input to TERMINAL A of the anti-theft ECU. Through communication control of the body ECU etc., the taillights and headlights are automatically turned on or off. See WIRING DIAGRAMS .

  • Turn On Operation -  When the anti-theft ECU receives the frequency signal from the automatic light control sensor and determines that the brightness around the vehicle has decreased below a specified level, terminal TAIL and HEAD of the anti-theft ECU are controlled through communication control of the body ECU etc. As a result, the taillights and/or headlights light up as the TAIL relay and/or HEAD LP relay are turned on. See WIRING DIAGRAMS .
  • Turn Off Operation -  When the anti-theft ECU receives the frequency signal from the automatic light control sensor and determines that the brightness around the vehicle has exceeded a specified level, terminal TAIL and HEAD of the anti-theft ECU are controlled through communication control of the body ECU etc. As a result, the taillights and/or headlights go off as the TAIL relay and/or HEAD LP relay are turned off. See WIRING DIAGRAMS .
RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

Shop Manual-Ready ToolsFree Quote CheckQuote Shield Pro

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.