Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

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HOMESERVICE MANUALSTOYOTA2004MATRIX XR, FWD, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 732 (LIGHTING SYSTEM - DIAGNOSIS)INITIAL SET CONTROL FUNCTION DOES NOT OPERATE (WARNING LAMP GOES OFF)INSPECTION PROCEDURE

2004 Toyota Matrix XR, FWD, Standard

Inspection Procedure

2004 Toyota Matrix XR, FWD, StandardSECTION Inspection Procedure

WARNING: This page is about a different car, the 2004 Lexus ES 330. However, it is still accessible from the selected car via links, so may be relevant.

CHECK INITIALIZE
1. Start engine.
2. Check that initial set control function of both headlamps operates.
  NG: Go to step 3
  
  OK: Go to Next Step
CHECK HEAD LIGHT UNIT
1. Check headlamp leveling motor resistance.
  1. Check that continuity exists between terminal 2 and 5.
    
    Fig 1: Checking Continuity Exists Between Terminals 2 & 5
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. Check that there is resistance between terminals as shown in Fig 2 .
  Fig 2: Checking Resistance Between Terminals Chart
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  NG: REPLACE HEAD LIGHT UNIT
  
  OK: CHECK AND REPLACE HEADLIGHT UNIT
CHECK HARNESS AND CONNECTOR (BETWEEN HEADLAMP LEVELING ECU AND HEADLAMP LEVELING MOTOR)
1. Check the continuity of the vehicle side wire harness between headlamp leveling motor.
  Standard: There is continuity.
  
  NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
  
  OK: CHECK AND REPLACE HEADLAMP LEVELING ECU ASSY

RENDER: 1.0x

NO RELATED

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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.