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HOMESERVICE MANUALSTOYOTA2004MATRIX XR, FWD, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 599 (LIGHTING SYSTEM - DIAGNOSIS)TURN SIGNAL LIGHT CIRCUITINSPECTION 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 2002 Lexus SC 430. However, it is still accessible from the selected car via links, so may be relevant.
  1. DO ACTIVE TEST OF OBD II SCAN TOOL OR LEXUS HAND-HELD TESTER 
    1. Connect the LEXUS hand-held tester to the DLC3.
    2. Check that the turn signal light can operate in an ACTIVE TEST.

    Driver Side J/B ECU: 

    DRIVER SIDE J/B ECUS INSPECTION

    Description (Symbols) Tester display Check condition
    Turn signal Left TRN SIG LGT L ON - OFF
    Turn signal Right TRN SIG LGT R ON - OFF

    LH and RH can be checked with test separately.

    1. OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN ON PROBLEM SYMPTOM TABLE, see  PROBLEM SYMPTOMS TABLE  . 
    2. NG: Go to next step 
  2. INSPECT TURN SIGNAL FLASHER ASSEMBLY 
    1. Connect the positive (+) lead from the battery to terminal 2 and the negative (-) lead to terminal 3.
      2. Fig 1: Inspecting Turn Signal Flasher Assembly
      G03386643Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Connect the 2 turn signal light bulbs parallel to each other to terminals 1 and 3, check that the bulbs flash.

    HINT:

    • The turn signal lights should flash 60 or 120 times per minute.
    • If one of the front or rear turn signal lights has an open circuit, the number of flashers will be more than 140 per minute.
    1. NG: REPLACE TURN SIGNAL FLASHER ASSEMBLY 
    2. OK: GO TO NEXT STEP 
  3. CHECK HARNESS AND CONNECTOR 
    1. Check for open and short circuit in harness and connector between driver side J/B and turn signal flasher relay.
    2. Check for open and short circuit in harness and connector between turn signal flasher relay and body ground.
    1. NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 
    2. OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN ON PROBLEM SYMPTOM TABLE, SEE  PROBLEM SYMPTOMS TABLE  . 
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.