Toyota Parking Assist-Sensor System Diagnosis System

Body Electrical. Camry. Acv40 Gsv40
Park Assist Monitoring. Camry. Acv40 Gsv40

  1. DESCRIPTION

  1. CHECK DLC3

Toyota Parking Assist-Sensor System -- Diagnosis System



DESCRIPTION

  1. When troubleshooting a vehicle with a diagnosis system, the only difference from the usual troubleshooting procedure is connecting the intelligent tester to the vehicle and reading various data output from the vehicle clearance warning ECU.
    The clearance warning ECU records DTCs when the ECU detects a malfunction in the ECU itself or in its circuits.
    To check the DTCs, connect the intelligent tester to the DLC3 on the vehicle. The intelligent tester makes it possible to clear the DTCs, activate the various actuators, and check the freeze frame data and Data List.


CHECK DLC3


    Camry. Acv40 Gsv40.Park Assist Monitoring.Toyota Parking Assist-Sensor System.Toyota Parking Assist-Sensor System Diagnosis System

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

    Symbols (Terminal No.)
    		Terminal Description
    		Condition
    		Specified Condition
    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
    		9 to 14 V
    CANH (6) - CANL (14)
    		CAN bus line
    		Ignition switch OFF*
    		54 to 69 Ω
    CANH (6) - Battery positive
    		HIGH-level CAN bus line
    		Ignition switch OFF*
    		6 kΩ or higher
    CANH (6) - CG (4)
    		HIGH-level CAN bus line
    		Ignition switch OFF*
    		200 Ω or higher
    CANL (14) - Battery positive
    		LOW-level CAN bus line
    		Ignition switch OFF*
    		6 kΩ or higher
    CANL (14) - CG (4)
    		LOW-level CAN bus line
    		Ignition switch OFF*
    		200 Ω or higher
    HINT:
    Connect the cable of the intelligent tester to the DLC3, turn the ignition switch to the ON position and attempt to use the intelligent tester. If the screen displays a communication error message, a problem exists on either the vehicle side or the tester side.
    If the communication is normal when the tester is connected to another vehicle, inspect the DLC3 on the original vehicle.
    If the 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.
    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.