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HOMESERVICE MANUALSTOYOTA2004MATRIX XR, FWD, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 699 (WIRELESS DOOR LOCK CONTROL SYSTEM - DIAGNOSTICS)DIAGNOSTIC TROUBLE CODE CHARTDTC 42 WIRELESS DOOR LOCK RECEIVER CIRCUIT MALFUNCTIONINSPECTION 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. CHECK WIRE HARNESS (DOOR CONTROL RECEIVER - MULTIPLEX NETWORK BODY ECU, BATTERY AND BODY GROUND) 
    1. Disconnect the D4 receiver connector.
      Fig 1: Disconnecting D4 Receiver Connector
      G03049998Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the B8 ECU connector.
    3. Measure the voltage and resistance of the wire harness side connectors.

      Standard: 

      CONNECTOR SPECIFIED CONDITION

      Tester Connection Specified Condition
      D4-2 (RDA) - B8-12 (RDA) Below 1 Ω
      D4-3 (PRG) - B8-11 (PRG) Below 1 Ω
      D4-5 (+B) - Body ground 10 to 14 V
      D4-1 (E) - Body ground Below 1 Ω
      D4-2 (RDA) or B8-12 (RDA) - Body ground 10 kΩ or higher
      D4-3 (PRG) or B8-11 (PRG) - Body ground 10 kΩ or higher
    1. NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 
    2. OK: Go to next step 
  2. REPLACE DOOR CONTROL RECEIVER 
    1. After replacing the door control receiver with a normally functioning receiver, check for DTC.

      Result: 

      DTC RESULT

      Result Proceed to
      DTC is outputs. A
      No DTC is outputs. B
    1. B: END 
    2. A: REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSY (MULTIPLEX NETWORK BODY ECU) 
RENDER: 1.0x

NO RELATED

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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.