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HOMESERVICE MANUALSTOYOTA2004MATRIX XR, FWD, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 692 (AIR CONDITIONING SYSTEM DIAGNOSTICS)IG POWER SOURCE 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.

HINT:

Start the engine before inspection. Check the IG1 relay or battery if the engine does not start.

If the engine still does not start, see the SFI system (see HOW TO PROCEED WITH TROUBLESHOOTING or HOW TO PROCEED WITH TROUBLESHOOTING ).

  1. INSPECT FUSE (HTR) 
    1. Remove the HTR fuse from the driver side J/B.
    2. Measure the resistance according to the value(s) in HTR FUSE RESISTANCE  .

      Standard: 

      HTR FUSE RESISTANCE

      Tester item Condition Specified condition
      HTR fuse Always Below 1 Ω
    1. NG: CHECK FOR SHORT IN ALL HARNESS AND COMPONENTS CONNECTED FAILURE FUSE 
    2. OK: Go to Next Step. 
  2. INSPECT AIR CONDITIONING AMPLIFIER (IG+ - BODY GROUND) 
    1. Remove the A/C amplifier assy with the connectors still connected.
    2. Turn the ignition switch to the ON position.
    3. Measure the voltage according to the value(s) in AIR CONDITIONING AMPLIFIER (IG+ - BODY GROUND) VOLTAGE  .

      Standard: 

      AIR CONDITIONING AMPLIFIER (IG+ - BODY GROUND) VOLTAGE

      Tester connection Condition Specified condition
      A11-19 (IG+) - Body ground Ignition switch ON 10 to 14 V
      Fig 1: Inspecting Air Conditioning Amplifier (IG+ - Body Ground)
      G03036797Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: Go to step   3 
    2. OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE (SEE  TERMINALS OF ECU  ) 
  3. CHECK HARNESS AND CONNECTOR (A/C AMPLIFIER ASSY - BATTERY) (SEE  ELECTRONIC CIRCUIT INSPECTION PROCEDURE  ) 
    1. Measure the resistance according to the value(s) in Fig 2 .

      Standard: 

      Fig 2: Checking Harness & Connector (A/C Amplifier Assy - Battery) (1 Of 2)
      G03036798Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
RENDER: 1.0x

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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.