Lin Communication System Terminals Of Ecu

Communication System. Camry. Acv40 Gsv40
Multiplex Communication. Camry. Acv40 Gsv40

  1. CHECK MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK)

  1. CHECK POWER WINDOW REGULATOR MOTOR (DRIVER SIDE)

  1. CHECK SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY)*

Lin Communication System -- Terminals Of Ecu



CHECK MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK)


  1. Disconnect the ID and IF instrument panel junction block connectors.


    Camry. Acv40 Gsv40.Multiplex Communication.Lin Communication System.Lin Communication System Terminals Of Ecu

  2. Measure the voltage and resistance according to the value(s) in the table below.

    Terminal No. (Symbols)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    ID-10 (BECU) - Body ground
    		O - Body ground
    		Battery power supply
    		Always
    		11 to 14 V
    IF-10 (GND1) - 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 ID and IF instrument panel junction block connectors.

  4. Measure the pulse according to the value(s) in the table below.

    Terminal No. (Symbols)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    E8-10 (LIN2) - IF-10 (GND1)
    		P - W-B
    		LIN Communication line
    		Ignition switch ON
    		Pulse generation
    If the result is not as specified, the main body ECU (Instrument panel junction block) may have a malfunction.

CHECK POWER WINDOW REGULATOR MOTOR (DRIVER SIDE)


  1. Disconnect the I5*1 or H10*2 motor connector.

    HINT:
    *1: for LHD
    *2: for RHD

    Camry. Acv40 Gsv40.Multiplex Communication.Lin Communication System.Lin Communication System Terminals Of Ecu

  2. Measure the voltage and resistance according to the value(s) in the table below.

    Terminal No. (Symbols)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    I5-2 (B) - I5-1 (E)*1
    H10-2 (B) - H10-1 (E)*2
    		W - W-B
    		Battery power supply
    		Always
    		11 to 14 V
    I5-1 (E) - Body ground*1
    H10-1 (E) - Body ground*2
    		 W-B - Body ground
    		Ground
    		Always
    		Below 1 Ω
    HINT:
    *1: for LHD
    *2: for RHD
    If the result is not as specified, there may be a malfunction on the wire harness side.

  3. Reconnect the I5*1 or H10*2 motor connector.

    HINT:
    *1: for LHD
    *2: for RHD

  4. Measure the pulse according to the value(s) in the table below.

    Terminal No. (Symbols)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    I5-9 (LIN) - I5-1 (E)*1
    H10-9 (LIN) - H10-1 (E)*2
    		P - W-B
    		LIN Communication line
    		Ignition switch ON
    		Pulse generation
    HINT:
    *1: for LHD
    *2: for RHD
    If the result is not as specified, the motor may be malfunctioning.

CHECK SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY)*
HINT:
*: Models with Sliding Roof System


  1. Disconnect the Q12 ECU connector.


    Camry. Acv40 Gsv40.Multiplex Communication.Lin Communication System.Lin Communication System Terminals Of Ecu

  2. Measure the voltage and resistance according to the value(s) in the table below.

    Terminal No. (Symbols)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    Q12-1 (B) - Q12-2 (E)
    		B - W-B
    		Battery power supply
    		Always
    		11 to 14 V
    Q12-2 (E) - 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 Q12 ECU connector.

  4. Measure the pulse according to the value(s) in the table below.

    Terminal No. (Symbols)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    Q12-4 (MPX1) - Q12-2 (E)
    		P - W-B
    		LIN Communication line
    		Ignition switch ON
    		Pulse generation
    If the result is not as specified, the motor may be malfunctioning.