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HOMESERVICE MANUALSTOYOTA2004MATRIX XR, FWD, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 694 (AUDIO SYSTEM - DIAGNOSTICS)AVC-LAN 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 2004 Toyota Camry Solara. However, it is still accessible from the selected car via links, so may be relevant.
  1. SERVICE CHECK MODE (STEREO COMPONENT AMPLIFIER ASSY) 
    1. Perform service check.
      1. Start the diagnostic system and read the check result for the stereo component amplifier assy.

      Standard: 

      SPECIFIED CONDITION

      A "NCON" is displayed or no display (DSP AMP)
      B "GOOD" is displayed
    1. B: REPLACE RADIO RECEIVER ASSY (SEE  REPLACEMENT  ) 
    2. A: Go to Next Step. 
  2. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSY - STEREO COMPONENT AMPLIFIER ASSY) 
    1. Disconnect the radio receiver assy R7 connector and stereo component amplifier assy S11 connector.
    2. Measure the resistance according to the values in SPECIFIED CONDITION  .

      Standard: 

      SPECIFIED CONDITION

      Tester connection Specified condition
      TX+ (S11-8) ((1)) - TX+ (R7-5) Below 1 Ω
      TX- (S11-7) ((1)) - TX- (R7-15) Below 1 Ω
      TX+ (S11-20) ((2)) - TX+ (R7-5) Below 1 Ω
      TX- (S11-19) ((2)) - TX- (R7-15) Below 1 Ω
      TX+ (R7-5) - Body ground 10 kΩ or higher
      TX- (R7-15) - Body ground 10 kΩ or higher
      (1) Coupe
      (2) Convertible
      Fig 1: Checking Harness & Connector (Radio Receiver Assy - Stereo Component Amplifier Assy)
      G03049473Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 
    2. OK: REPLACE STEREO COMPONENT AMPLIFIER ASSY (SEE  REPLACEMENT  ) 
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.