Power Window Control System (For Lhd) Terminals Of Ecu

  1. CHECK POWER WINDOW REGULATOR MASTER SWITCH

Power Window Control System (For Lhd) -- Terminals Of Ecu



CHECK POWER WINDOW REGULATOR MASTER SWITCH

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  1. Disconnect the P6 switch connector.

  2. Measure the voltage and resistance of the wire harness side connector.

    Symbols (Terminal No.)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    B (P6-6) - Body ground
    		L - Body ground
    		Ignition power supply
    		Ignition switch OFF
    		Below 1 V
    B (P6-6) - Body ground
    		L - Body ground
    		Ignition power supply
    		Ignition switch ON
    		10 to 14 V
    E (P6-3) - Body ground
    		W-B - Body ground
    		Ground
    		Always
    		Below 1 Ω
    If the result is not as specified, there may be a malfunction on the wire harness side.

  3. Reconnect the P6 switch connector.

  4. Measure the voltage of the connector.

    Symbols (Terminal No.)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    DU (P6-4) - E (P6-3)
    		R - W-B
    		Power window motor UP output
    		Ignition switch ON, driver side power window switch OFF → UP (manual operation)
    		Below 1 V → 10 to 14 V
    DD (P6-9) - E (P6-3)
    		L-R - W-B
    		Power window motor DOWN output
    		Ignition switch ON, driver side power window switch OFF → DOWN (manual operation)
    		Below 1 V → 10 to 14 V
    DD (P6-9) - E (P6-3)
    		L-R - W-B
    		Power window motor DOWN output
    		Ignition switch ON, driver side power window fully closed → driver side power window switch DOWN (AUTO operation) → driver side power window fully open
    		Below 1 V → 10 to 14 V → Below 1 V
    If the result is not as specified, the master switch may have a malfunction.

  5. Check the AUTO light illumination.

    1. After turning the ignition switch ON, check that the AUTO light illuminates (green).