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HOMESERVICE MANUALSTOYOTA2004MATRIX XR, FWD, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 532 (HYBRID CONTROL SYSTEM - DIAGNOSIS)DTC P3108/535: LOST COMMUNICATION WITH A/C SYSTEM CONTROL MODULE, DTC P3108/536 LOST COMMUNICATION WITH A/C SYSTEM CONTROL MODULE, DTC P3108/538 LOST COMMUNICATION WITH A/C SYSTEM CONTROL MODULEINSPECTION 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 Prius. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - A/C INVERTER) 
    Fig 1: Measuring Voltage Between Terminals Of HV Control ECU Connector
    G02917913Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the H15 and H16 HV control ECU connectors.
    2. Disconnect the I11 A/C inverter connector.
    3. Turn the power switch ON (IG).
    4. Measure the voltage between the terminals of the HV control ECU connector and body ground.
      1. Standard: 
      VOLTAGE CHECK

      Tester Connection Specified Condition
      CLK (H16-17)- Body ground Below 1 V
      ITE (H16-14) - Body ground Below 1 V
      ETI (H15-24) - Body ground Below 1 V
      STB (H15-25) - Body ground Below 1 V
    5. Turn the power switch OFF.
    6. Check the resistance between the wire harness side connectors.
      1. Standard (Check for open): 
      RESISTANCE CHECK

      Tester Connection Specified Condition
      CLK (H16-17) -CLK (I11-4) Below 1Ω
      ITE (H16-14) - TOECU (I11-2) Below 1Ω
      ETI (H15-24) - TOINV (I11-3) Below 1Ω
      STB (H15-25) -STB (I11-5) Below 1Ω
      Fig 2: Identifying A/C Inverter Connector Terminals
      G02917914Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Standard (Check for short): 
      RESISTANCE CHECK

      Tester Connection Specified Condition
      CLK (H16-17) or CLK (I11-4) - Body ground 10 kΩ or higher
      ITE (H16-14) or TOECU (I11-2) - Body ground 10 kΩ or higher
      ETI (H15-24) or TOINV (I11-3) - Body ground 10 kΩ or higher
      STB (H15-25) or STB (I11-5) - Body ground 10 kΩ or higher
    7. Reconnect the A/C inverter connector.
    8. Reconnect the HV control ECU connectors.

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: REPLACE W/CONVERTER INVERTER ASSY (See  W/CONVERTER INVERTER ASSY  in HYBRID CONTROL SYSTEM ) 

RENDER: 1.0x

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