Air Conditioning System Diagnosis System

Heater & Air Conditioning System. Camry. Acv40 Gsv40
Air Conditioning. Camry. Acv40 Gsv40

  1. CHECK DLC3

Air Conditioning System -- Diagnosis System



CHECK DLC3


    Camry. Acv40 Gsv40.Air Conditioning.Air Conditioning System.Air Conditioning System Diagnosis System

  1. The vehicle's ECU uses the ISO 15765-4 for communication. The terminal arrangement of the DLC3 complies with ISO 15031-3 and matches the ISO 15765-4 format.

    Symbol (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
    		10 to 14 V
    CANH (6) - CANL (14)
    		CAN bus line
    		Ignition switch: LOCK*
    		54 to 69 Ω
    CANH (6) - BAT (16)
    		HIGH-level CAN bus line
    		Ignition switch: LOCK*
    		6 kΩ or higher
    CANH (6) - CG (4)
    		HIGH-level CAN bus line
    		Ignition switch: LOCK*
    		200 Ω or higher
    CANL (14) - BAT (16)
    		LOW-level CAN bus line
    		Ignition switch: LOCK*
    		6 kΩ or higher
    CANL (14) - CG (4)
    		LOW-level CAN bus line
    		Ignition switch: LOCK*
    		200 Ω or higher
    NOTICE:
    *: Before measuring the resistance, leave the vehicle as is for at least 1 minute and do not operate the ignition switch, any other switches, or the doors.
    HINT:
    Connect the cable of the intelligent tester to the DLC3, turn the ignition switch to the ON position and attempt to use the tester. If the display indicates that a communication error has occurred, there is a problem either with the vehicle or with the tester.
    1. If communication is normal when the tester is connected to another vehicle, inspect the DLC3 of the original vehicle.
    2. If communication is still not possible when the tester is connected to another vehicle, the problem may be in the tester itself. Consult the Service Department listed in the tester's instruction manual.