Seat Belt Warning System Diagnosis System

Restraints. Camry. Acv40 Gsv40
Seat Belt. Camry. Acv40 Gsv40

  1. DESCRIPTION

  1. CHECK DLC3

Seat Belt Warning System -- Diagnosis System



DESCRIPTION

  1. The seat belt warning system data can be read from the Data Link Connector 3 (DLC3) of the vehicle. When the system seems to be malfunctioning, use the intelligent tester to check for malfunctions and perform repairs.


CHECK DLC3
Camry. Acv40 Gsv40.Seat Belt.Occupant Detection Sensor (For Manual Seat).Seat Belt Warning System Diagnosis System


    Camry. Acv40 Gsv40.Seat Belt.Occupant Detection Sensor (For Manual Seat).Seat Belt Warning System Diagnosis System

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

    Symbols (Terminals 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 OFF*
    		54 to 69 Ω
    CANH (6) - CG (4)
    		HIGH-level CAN bus line
    		Ignition Switch OFF*
    		200 Ω or more
    CANL (14) - CG (4)
    		LOW-level CAN bus line
    		Ignition Switch OFF*
    		200 Ω or more
    CANH (6) - BAT (16)
    		HIGH-level CAN bus line
    		Ignition Switch OFF*
    		6 kΩ or more
    CANL (14) - BAT (16)
    		LOW-level CAN bus line
    		Ignition Switch OFF*
    		6 kΩ or more
    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 door.
    If the result is not as specified, the DLC3 may have a malfunction. Repair or replace the harness and connector.
    HINT:
    Connect the cable of the intelligent tester to the DLC3, turn the ignition switch ON 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.