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Multiplex Network Body ECU

  1. Disconnect the body ECU connector B4. See CONNECTOR IDENTIFICATION . See INSPECTING MULTIPLEX NETWORK BODY ECU CONTINUITY  table. If the value is not as specified, there may be a malfunction in the vehicle's side.
    INSPECTING MULTIPLEX NETWORK BODY ECU CONTINUITY

    Tester Connection Wiring Color Condition (Specified Condition)
    B4-19 (KSW) - Body Ground Blue - Body Ground No Key In The Ignition Key Cylinder - With Key (No Continuity - Continuity)
  2. Connect the body ECU connector B4. See INSPECTING MULTIPLEX NETWORK BODY ECU VOLTAGE  table. If the value is not as specified, replace the regulator switch. See POWER WINDOW MASTER SWITCH  under REMOVAL & INSTALLATION.
    INSPECTING MULTIPLEX NETWORK BODY ECU VOLTAGE

    Tester Connection Wiring Color Condition (Specified Condition)
    B6-1 (DCTY) - Body Ground Red/Green - Body Ground Driver's Door CLOSED - OPEN (10-14 Volts - Below 0 Volt)
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