BACK DOOR CLOSER SYSTEM > DIAGNOSIS SYSTEM

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DESCRIPTION

  1. The ECU stores trouble codes when trouble occurs on the vehicle. The diagnostic system allows for reading of the trouble codes from the DLC3. Use the intelligent tester to check and solve the problem.


CHECK DLC3


    F040034E03

  1. The vehicle's ECU uses ISO 9141-2 (Euro-OBD)/ISO 14230 (M-OBD) for communication. The terminal arrangement of the DLC3 complies with ISO 15031-03 and matches the ISO 9141-2/ISO 14230 format.

    Symbols (Terminal No.)
    		Terminal Description
    		Condition
    		Specified Condition
    SIL (7) - SG (5)
    		Bus "+" line
    		During transmission
    		Pulse generation
    CG (4) - Body ground
    		Chassis ground
    		Always
    		Below 1 Ω
    SG (5) - Body ground
    		Signal ground
    		Always
    		Below 1 Ω
    BAT (16) - Body ground
    		Battery positive
    		Always
    		11 to 14 V
    CANH (6) - CANL (14)
    		HIGH-level CAN bus line
    		Ignition switch OFF
    		54 to 67 Ω
    CANH (6) - Battery positive
    		HIGH-level CAN bus line
    		Ignition switch OFF
    		1 MΩ or higher
    CANH (6) - CG (4)
    		HIGH-level CAN bus line
    		Ignition switch OFF
    		3 kΩ or higher
    CANL (14) - Battery positive
    		LOW-level CAN bus line
    		Ignition switch OFF
    		1 MΩ or higher
    CANL (14) - CG (4)
    		LOW-level CAN bus line
    		Ignition switch OFF
    		3 kΩ or higher

    HINT:
    If the display shows a communication error message after connecting the intelligent tester to the DLC3 and turning the ignition switch to the ON position, there is a problem with either the vehicle or the tester.
    1. If communication is normal when the tester is connected to another vehicle, inspect the DLC3 on the original vehicle.
    2. If communication is still impossible when the tester is connected to another vehicle, the problem is probably in the tester itself. Consult the Service Department listed in the tester's instruction manual.