Can Communication System (For Rhd) Open In Can Main Bus Line

Communication System. Camry. Acv40 Gsv40
Can Communication. Camry. Acv40 Gsv40

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK DLC3

CHECK FOR OPEN IN CAN BUS MAIN WIRE (COMBINATION METER MAIN BUS WIRE)

CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 1 CAN J/C)

CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 2 CAN J/C - ECM)

CHECK FOR OPEN IN CAN BUS MAIN WIRE (ECM CAN MAIN BUS WIRE)

CHECK FOR OPEN IN CAN BUS MAIN WIRE (COMBINATION METER - NO. 1 CAN J/C)

CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 1 CAN J/C - NO. 2 CAN J/C)

CAN COMMUNICATION SYSTEM (for RHD) - Open in CAN Main Bus Line


DESCRIPTION

There may be an open circuit in the CAN main bus wire and/or the DLC3 branch wire when the resistance between terminals 6 (CANH) and 14 (CANL) of the DLC3 is 70Ω or more.

Symptom
Trouble Area
Resistance between terminals 6 (CANH) and 14 (CANL) of the DLC3 is 70 Ω or more.
  1. CAN main bus wire or connector
  2. No. 1 CAN J/C
  3. No. 2 CAN J/C
  4. DLC3 branch wire or connector
  5. Combination meter
  6. ECM

WIRING DIAGRAM


Camry. Acv40 Gsv40.Can Communication.Can Communication System (For Lhd).Can Communication System (For Rhd) Open In Can Main Bus Line


INSPECTION PROCEDURE

NOTICE:
  1. Turn the ignition switch off before measuring the resistance of the CAN main wire and CAN branch wires.
  2. After the ignition switch is turned off, check that the key reminder warning system and lighting system are not operating.
  3. 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 doors need to be opened in order to check connectors, open the doors and leave them open.
HINT:
Operating the ignition switch, any other switches or any triggers related ECU and sensor communication on the CAN, which would cause resistance reading variations.
1.CHECK DLC3

  1. Turn the ignition switch off.



    Camry. Acv40 Gsv40.Can Communication.Can Communication System (For Lhd).Can Communication System (For Rhd) Open In Can Main Bus Line

  1. Measure the resistance according to the value(s) in the table below.

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Value
    		Result
    E10-6 (CANH) -E10-14 (CANL)
    		Ignition switch off
    		108 to 132 Ω
    		A
    E10-6 (CANH) - E10-14 (CANL)
    		Ignition switch off
    		133 Ω or higher
    		B
    NOTICE:
    When the measured value is 133 Ω or more and a CAN communication system diagnostic trouble code is output, there may be a fault besides disconnection of the DLC3 branch wire. For that reason, troubleshooting should be performed again from "HOW TO PROCEED WITH TROUBLESHOOTING" (CAMRY_ACV40 RM000000WI605KX.html ) after repairing the trouble area.


B
REPAIR OR REPLACE DLC3 BRANCH WIRE OR CONNECTOR (CANH, CANL)
A


2.CHECK FOR OPEN IN CAN BUS MAIN WIRE (COMBINATION METER MAIN BUS WIRE)


    Camry. Acv40 Gsv40.Can Communication.Can Communication System (For Lhd).Can Communication System (For Rhd) Open In Can Main Bus Line

  1. Disconnect the CAN main bus wire connector (E43) from the No. 1 CAN J/C "B" side (without earth terminal).

    NOTICE:
    1. Before disconnecting the connector, make a note of where it is connected.
    2. Reconnect the connector to its original position.

  1. Measure the resistance according to the value(s) in the table below.

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Value
    E43-1 (CANH) - E43-2 (CANL)
    		Ignition switch off
    		108 to 132 Ω


OK
Go to step 6
NG


3.CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 1 CAN J/C)

  1. Reconnect the CAN main bus wire connector (E43) to the No. 1 CAN J/C "B" side (without earth terminal).



    Camry. Acv40 Gsv40.Can Communication.Can Communication System (For Lhd).Can Communication System (For Rhd) Open In Can Main Bus Line

  1. Disconnect the CAN main bus wire connector (E42) from the No. 1 CAN J/C "A" side (with earth terminal).

    NOTICE:
    1. Before disconnecting the connector, make a note of where it is connected.
    2. Reconnect the connector to its original position.

  1. Measure the resistance according to the value(s) in the table below.

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Value
    E42-1 (CANH) - E42-2 (CANL)
    		Ignition switch off
    		108 to 132 Ω


OK
REPLACE NO. 1 CAN J/C
NG


4.CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 2 CAN J/C - ECM)

  1. Reconnect the CAN main bus wire connector (E42) to the No. 1 CAN J/C (with earth terminal).



    Camry. Acv40 Gsv40.Can Communication.Can Communication System (For Lhd).Can Communication System (For Rhd) Open In Can Main Bus Line

  1. Disconnect the CAN main bus wire connector (A40) from the No. 2 CAN J/C (rear of the vehicle).

  1. Measure the resistance according to the value(s) in the table below.

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Value
    A40-1 (CANH) - A40-7 (CANL)
    		Ignition switch off
    		108 to 132 Ω


OK
Go to step 7
NG


5.CHECK FOR OPEN IN CAN BUS MAIN WIRE (ECM CAN MAIN BUS WIRE)

  1. Reconnect the CAN main bus wire connector (A40) to the No. 2 CAN J/C (rear of the vehicle).



    Camry. Acv40 Gsv40.Can Communication.Can Communication System (For Lhd).Can Communication System (For Rhd) Open In Can Main Bus Line

  1. Disconnect the A24 ECM connector.

  1. Measure the resistance according to the value(s) in the table below.

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Value
    A24-41 (CANH) - A24-49 (CANL)
    		Ignition switch off
    		108 to 132 Ω


OK
REPLACE ECM
NG

REPAIR OR REPLACE CAN BUS MAIN WIRE OR CONNECTOR (NO. 2 CAN J/C - ECM)

6.CHECK FOR OPEN IN CAN BUS MAIN WIRE (COMBINATION METER - NO. 1 CAN J/C)

  1. Reconnect the CAN main bus wire connector (E43) to the No. 1 CAN J/C "B" side (without earth terminal).



    Camry. Acv40 Gsv40.Can Communication.Can Communication System (For Lhd).Can Communication System (For Rhd) Open In Can Main Bus Line

  1. Disconnect the combination meter connector (F1).

  1. Measure the resistance according to the value(s) in the table below.

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Value
    F1-17 (CANH) - F1-18 (CANL)
    		Ignition switch off
    		108 to 132 Ω


OK
REPLACE COMBINATION METER
NG

REPAIR OR REPLACE CAN BUS MAIN WIRE OR CONNECTOR (NO. 1 CAN J/C - COMBINATION METER)

7.CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 1 CAN J/C - NO. 2 CAN J/C)


    Camry. Acv40 Gsv40.Can Communication.Can Communication System (For Lhd).Can Communication System (For Rhd) Open In Can Main Bus Line

  1. Reconnect the CAN main bus wire connector (A40) to the No. 2 CAN J/C (rear of the vehicle).

  1. Disconnect the CAN main bus wire connector (E41) from the No. 2 CAN J/C (front of the vehicle).

  1. Measure the resistance according to the value(s) in the table below.

    Standard resistance:
    Tester Connection
    		Specified Value
    E41-4 (CANH) - E41-10 (CANL)
    		108 to 132 Ω


NG
REPAIR OR REPLACE CAN BUS MAIN WIRE OR CONNECTOR (NO. 1 CAN J/C - NO. 2 CAN J/C)
OK

REPLACE NO. 2 CAN J/C