Can Communication System Check Can Bus Line (Lhd Models)

Communication System. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35
Can Communication. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL

CHECK CAN BUS WIRE (MAIN WIRE FOR DISCONNECTION, CAN BUS LINES FOR SHORT CIRCUIT)

CHECK CAN BUS LINE FOR SHORT TO +B

CHECK CAN BUS LINE FOR SHORT TO GND

CAN COMMUNICATION SYSTEM - Check CAN Bus Line (LHD Models)


DESCRIPTION

When any DTC for the CAN communication system is output, first measure the resistance between the terminals of the DLC3 to specify the trouble area, and check that there is not a short in the CAN main wire, between the main wire, to +B, or to GND.

WIRING DIAGRAM


Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.Can Communication.Can Communication System.Can Communication System Check Can Bus Line (Lhd Models)


Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.Can Communication.Can Communication System.Can Communication System Check Can Bus Line (Lhd Models)


INSPECTION PROCEDURE

NOTICE:
  1. Turn the ignition switch off before measuring the resistance of the main wire and the branch wire.
  2. After the ignition switch is turned off, check that the key reminder warning system and light reminder buzzer are not in operation.
  3. Before measuring the resistance, leave the vehicle for at least 1 minute and do not operate the ignition switch, any switches or doors. If doors need to be opened in order to check connectors, open the doors and leave them open.
HINT:
Operating the ignition switch, any switches or any doors triggers related ECU and sensor communication with the CAN, which causes resistance variation.
1.DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL

  1. Disconnect the cable from the negative (-) battery terminal before measuring the resistance of the main wire and the branch wire.

    CAUTION:
    Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.
    NOTICE:
    1. w/ Navigation System (for HDD):
      After the ignition switch is turned off, the HDD navigation system requires approximately a minute to record various types of memory and settings. As a result, after turning the ignition switch off, wait a minute or higher before disconnecting the cable from the negative (-) battery terminal.
    2. When disconnecting the cable, some systems need to be initialized after the cable is reconnected.

NEXT


2.CHECK CAN BUS WIRE (MAIN WIRE FOR DISCONNECTION, CAN BUS LINES FOR SHORT CIRCUIT)


    Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.Can Communication.Can Communication System.Can Communication System Check Can Bus Line (Lhd Models)

  1. Measure the resistance of the DLC3.

    Result
    Tester Connection
    		Switch Condition
    		Specified Condition
    		Proceed to
    E16-6 (CANH) - E16-14 (CANL)
    		Ignition switch off
    		54 to 69 Ω
    		A
    E16-6 (CANH) - E16-14 (CANL)
    		Ignition switch off
    		Higher than 69 Ω
    		B
    E16-6 (CANH) - E16-14 (CANL)
    		Ignition switch off
    		Below 54 Ω
    		C


B
CHECK CAN MAIN WIRE FOR OPEN (RAV4_ACA30 RM000001YZO00EX.html)

C
CHECK CAN BUS LINES FOR SHORT CIRCUIT (RAV4_ACA30 RM000001RT200BX.html)
A


3.CHECK CAN BUS LINE FOR SHORT TO +B


    Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.Can Communication.Can Communication System.Can Communication System Check Can Bus Line (Lhd Models)

  1. Measure the resistance of the DLC3.

    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    E16-6 (CANH) - E16-16 (BAT)
    		Ignition switch off
    		6 kΩ or higher
    E16-14 (CANL) - E16-16 (BAT)
    		Ignition switch off
    		6 kΩ or higher


NG
CHECK CAN BUS LINE FOR SHORT TO +B (RAV4_ACA30 RM000001RT300BX.html)
OK


4.CHECK CAN BUS LINE FOR SHORT TO GND


    Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.Can Communication.Can Communication System.Can Communication System Check Can Bus Line (Lhd Models)

  1. Measure the resistance of the DLC3.

    Standard resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    E16-6 (CANH) - E16-4 (CG)
    		Ignition switch off
    		200 Ω or higher
    E16-14 (CANL) - E16-4 (CG)
    		Ignition switch off
    		200 Ω or higher


NG
CHECK CAN BUS LINE FOR SHORT TO GND (RAV4_ACA30 RM000001UKO00CX.html)
OK

HOW TO PROCEED WITH TROUBLESHOOTING (RAV4_ACA30 RM000001RSO048X.html)