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HOMESERVICE MANUALSTOYOTA2004MATRIX XR, FWD, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 452 (AIR CONDITIONING SYSTEM - DIAGNOSTICS)CIRCUIT INSPECTIONCONVERTER 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 Toyota Prius. However, it is still accessible from the selected car via links, so may be relevant.
  1. Check voltage between terminal IDH of A/C amplifier and body ground. 

    PREPARATION:  Remove the center cluster module control with connectors still connected.

    Check

    1. Turn ignition switch ON.
    2. Turn light control switch OFF.
    3. Turn rear defogger switch OFF.
    4. Measure voltage between terminal IDH of A/C amplifier.

      OK:  Voltage: Below 1.0 V.

      Fig 1: Locating A/C Amplifier Terminal IDH (Connector Installed)
      G01112434Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. OK:  Proceed to next circuit inspection shown on problem symptoms table. See PROBLEM SYMPTOMS TABLE .
    2. NG:  Go to step  2.
  2. Check voltage between terminal IDH of A/C amplifier and body ground. 

    PREPARATION:  Disconnect the connector from A/C amplifier.

    Check

    1. Turn ignition switch ON.
    2. Turn light control switch OFF.
    3. Turn rear defogger switch OFF.
    4. Measure voltage between terminal IDH of A/C amplifier on wire harness side connector.

      OK:  Voltage: Below 1.0 V.

      Fig 2: Locating A/C Amplifier Terminal IDH (Connector Removed)
      G01112435Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. OK:  Check and replace A/C amplifier.
    2. NG: Go to step   3 . 
  3. Check harness and connector between A/C amplifier and converter  . See HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION .
    1. NG:  Repair and replace harness and connector.
    2. OK:  Check and replace converter.
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.