Can Communication System How To Proceed With Troubleshooting

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

  1. VEHICLE BROUGHT TO WORKSHOP

  2. INSPECT BATTERY VOLTAGE

  3. CHECK CAN BUS LINE

  4. CHECK INSTALLED SYSTEMS (ECU AND SENSOR) THAT USE CAN COMMUNICATION

  5. CHECK AND CLEAR DTC*

  6. CHECK INTELLIGENT TESTER*

  7. DTC COMBINATION TABLE

  8. CIRCUIT INSPECTION

  9. IDENTIFY PROBLEM

  10. REPAIR OR REPLACE

  11. CONFIRMATION TEST

Can Communication System -- How To Proceed With Troubleshooting


NOTICE:
  1. DTCs for the CAN communication system are as follows: U0073, U0100, U0105, U0121, U0122, U0123, U0124, U0126, U0129, C1280, C1296, C1297, B1207*, B2326* and B1499. (*: w/ Entry and Start System)
  2. Refer to the troubleshooting procedures of each system if DTCs regarding the CAN communication system are not output.
  3. Turn the ignition switch off before measuring the resistance of the main wire and the branch wire.
  4. After the ignition switch is turned off, check that the key reminder warning system and light reminder buzzer are not in operation.
  5. 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:
  1. *: Use the intelligent tester.
  2. Operating the ignition switch, any switches or any doors triggers related ECU and sensor communication with the CAN, which causes resistance variation.


1.VEHICLE BROUGHT TO WORKSHOP

    NEXT


    2.INSPECT BATTERY VOLTAGE
      Standard voltage:
      11 to 14 V
      If the voltage is below 11 V, recharge or replace the battery before proceeding.

    NEXT


    3.CHECK CAN BUS LINE
      HINT:
      1. The Check CAN bus line (LHD Models) (RAV4_ACA30 RM000001RT9004X.html).
      2. The Check CAN bus line (RHD Models) (RAV4_ACA30 RM000001RTA003X.html).

    NEXT


    4.CHECK INSTALLED SYSTEMS (ECU AND SENSOR) THAT USE CAN COMMUNICATION

      NEXT


      5.CHECK AND CLEAR DTC*

        NEXT


        6.CHECK INTELLIGENT TESTER*

        1. Select "Bus Check" (RAV4_ACA30 RM000001RSW00ZX.html).

          Result
          Result
          		Proceed to
          All ECUs and sensors connected to CAN communication system displayed on screen.
          		A
          One ECU or sensor connected to CAN communication system not displayed on screen.
          		B
          2 or more ECU and sensors connected to CAN communication system not displayed on screen.
          		C

          2. NOTICE:
          1. The systems (ECUs and sensors) that use CAN communication vary depending on the vehicle and option settings. Check which systems (ECUs and sensors) are installed on the vehicle (RAV4_ACA30 RM000001RSW00ZX.html).
          2. Non-installed ECUs or sensors are not displayed. Do not mistake them for being in communication stop mode.
          3. If 2 or more ECUs or sensors are not displayed on the intelligent tester, perform troubleshooting for open circuits in one side of the CAN branch line for each undisplayed ECU or sensor.


        		B.
        GO TO COMMUNICATION STOP MODE TABLE

        		C.
        GO TO OPEN IN ONE SIDE OF CAN BRANCH WIRE
        A


        7.DTC COMBINATION TABLE

        1. Confirm the trouble according to the combination of output DTCs regarding the CAN communication system.

          2. HINT:
          Previous CAN communication system DTCs may be the cause if CAN communication system DTCs are output and all ECUs and sensors connected to the CAN communication system are displayed on the intelligent tester "Bus Check" screen.

        2. Check the DTC combination table (RAV4_ACA30 RM000001RSW00ZX.html).


        NEXT


        8.CIRCUIT INSPECTION

          NEXT


          9.IDENTIFY PROBLEM

            NEXT


            10.REPAIR OR REPLACE

              NEXT


              11.CONFIRMATION TEST

                NEXT

                END