Cruise Control System Diagnosis System

Cruise Control System. Camry. Acv40 Gsv40
Cruise Control. Camry. Acv40 Gsv40

  1. DESCRIPTION

  1. CHECK DLC3

  1. CHECK INDICATOR

Cruise Control System -- Diagnosis System



DESCRIPTION
The ECM controls the cruise control system of the vehicle. The data and DTCs relating to the cruise control system can be read from the DLC3 of the vehicle. If either DTC or CRUISE OK is not displayed on the multi-information display on the combination meter when checking for DTCs, there may be a problem with either the combination meter or the CAN communication and multiplex communication systems. Use the intelligent tester to check and solve the problem.

CHECK DLC3
Camry. Acv40 Gsv40.Cruise Control.Cruise Control System.Cruise Control 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.

    Terminal No. (Symbols)
    		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 higher
    CANL (14) - CG (4)
    		LOW-level CAN bus line
    		Ignition switch OFF*
    		200 Ω or higher
    CANH (6) - BAT (16)
    		HIGH-level CAN bus line
    		Ignition switch OFF*
    		6 kΩ or higher
    CANL (14) - BAT (16)
    		LOW-level CAN bus line
    		Ignition switch OFF*
    		6 kΩ 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.
    If the result is not as specified, the DLC3 may have a malfunction. Repair or replace the harness and connector.

  2. 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 with either the vehicle or 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.

CHECK INDICATOR


    Camry. Acv40 Gsv40.Cruise Control.Cruise Control System.Cruise Control System Diagnosis System

  1. Turn the ignition switch to the ON position.



  2. Check that the CRUISE main indicator light illuminates when the cruise control main switch is turned on, and that the indicator light turns off when the main switch is turned off. If the results are not as specified, inspect the CRUISE main indicator light circuit (CAMRY_ACV40 RM000000PLV00VX.html).

    HINT:
    Camry. Acv40 Gsv40.Cruise Control.Cruise Control System.Cruise Control System Diagnosis System
    While driving with cruise control, the ECM activates AUTO CANCEL of the cruise control system when a malfunction occurs in one of the following: vehicle speed sensors, stop light switch, or other related parts. When AUTO CANCEL is activated, the CRUISE main indicator light outputs the blinking pattern shown to the left. At the same time, data of the malfunction is stored as a DTC.