Can Communication System Check Can Bus Lines For Short Circuit

Power Source Network. Corolla. Zre142 Aze141
Networking. Corolla. Zre142 Aze141

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK FOR SHORT IN CAN BUS WIRES (DLC3 BRANCH WIRE)

CHECK FOR SHORT IN CAN BUS WIRES (CAN NO. 2 JUNCTION CONNECTOR)

CHECK FOR SHORT IN CAN BUS WIRES (ECM MAIN WIRE)

CHECK FOR SHORT IN CAN BUS WIRES (CAN NO. 2 JUNCTION CONNECTOR - SKID CONTROL ECU)

CHECK FOR SHORT IN CAN BUS WIRES (SKID CONTROL ECU)

CHECK FOR SHORT IN CAN BUS WIRES (CAN NO. 2 JUNCTION CONNECTOR - ECM MAIN WIRE)

CHECK FOR SHORT IN CAN BUS WIRES (CAN NO. 1 JUNCTION CONNECTOR - CAN NO. 2 JUNCTION CONNECTOR)

CHECK FOR SHORT IN CAN BUS WIRES (CAN NO. 1 JUNCTION CONNECTOR - COMBINATION METER)

CHECK FOR SHORT IN CAN BUS WIRES (CAN NO. 1 JUNCTION CONNECTOR - STEERING ANGLE SENSOR)

CHECK FOR SHORT IN CAN BUS WIRES (CAN NO. 1 JUNCTION CONNECTOR - POWER STEERING ECU)

CHECK FOR SHORT IN CAN BUS WIRES (CAN NO. 1 JUNCTION CONNECTOR - CENTER AIRBAG SENSOR ASSEMBLY)

CHECK FOR SHORT IN CAN BUS WIRES (CAN NO. 1 JUNCTION CONNECTOR - AIR CONDITIONING AMPLIFIER)

CHECK FOR SHORT IN CAN BUS WIRES (CAN NO. 1 JUNCTION CONNECTOR - MAIN BODY ECU)

CHECK FOR SHORT IN CAN BUS WIRES (CAN NO. 1 JUNCTION CONNECTOR - YAW RATE SENSOR)

CHECK FOR SHORT IN CAN BUS WIRES (CAN NO. 1 JUNCTION CONNECTOR - ACCESSORY GATEWAY)

CHECK FOR SHORT IN CAN BUS WIRES (CAN NO. 1 JUNCTION CONNECTOR)

CHECK FOR SHORT IN CAN BUS WIRES (STEERING ANGLE SENSOR)

CHECK FOR SHORT IN CAN BUS WIRES (POWER STEERING ECU)

CHECK FOR SHORT IN CAN BUS WIRES (CENTER AIRBAG SENSOR ASSEMBLY)

CHECK FOR SHORT IN CAN BUS WIRES (AIR CONDITIONING AMPLIFIER)

CHECK FOR SHORT IN CAN BUS WIRES (ACCESSORY GATEWAY)

CHECK FOR SHORT IN CAN BUS WIRES (MAIN BODY ECU)

CHECK FOR SHORT IN CAN BUS WIRES (COMBINATION METER ECU)

CAN COMMUNICATION SYSTEM - Check CAN Bus Lines for Short Circuit


DESCRIPTION

There may be a short circuit in the CAN main wire and/or CAN branch wire when the resistance between terminals 6 (CANH) and 14 (CANL) of the DLC3 is below 54 Ω.

Symptom
Trouble Area
Resistance between terminals 6 (CANH) and 14 (CANL) of DLC3 is below 54 Ω.
Short in CAN bus wire
  1. Skid control ECU
  2. Power steering ECU
  3. Steering angle sensor
  4. Yaw rate sensor
  5. ECM
  6. Center airbag sensor assembly
  7. Air conditioning amplifier
  8. Combination meter
  9. Main body ECU
  10. Accessory gateway
  11. CAN No. 1 junction connector
  12. CAN No. 2 junction connector

WIRING DIAGRAM


Corolla. Zre142 Aze141.Networking.Lin Communication System.Can Communication System Check Can Bus Lines For Short Circuit


Corolla. Zre142 Aze141.Networking.Lin Communication System.Can Communication System Check Can Bus Lines For Short Circuit


Corolla. Zre142 Aze141.Networking.Lin Communication System.Can Communication System Check Can Bus Lines For Short Circuit


Corolla. Zre142 Aze141.Networking.Lin Communication System.Can Communication System Check Can Bus Lines For Short Circuit


INSPECTION PROCEDURE

NOTICE:
  1. Turn the ignition switch off before measuring the resistance between main CAN bus wires and CAN Bus branch wires.
  2. After the ignition switch is turned off, check that the key reminder warning system and light reminder warning 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 any doors need to be opened in order to check the connectors, open the doors and leave them open.
HINT:
  1. Operating the ignition switch, any other switches, or a door triggers related ECU and sensor communication on the CAN. This communication will cause the resistance value to change.
  2. Even after DTCs are cleared, if a DTC is stored again after driving the vehicle for a while, the malfunction may be occurring due to vibration of the vehicle. In such a case, wiggling the ECUs or wire harness while performing the inspection below may help determine the cause of the malfunction.
1.CHECK FOR SHORT IN CAN BUS WIRES (DLC3 BRANCH WIRE)


    Corolla. Zre142 Aze141.Networking.Lin Communication System.Can Communication System Check Can Bus Lines For Short Circuit

  1. Turn the ignition switch off.

    Text in Illustration
    *A
    		for TMC Made
    *B
    		except TMC Made
    *a
    		Rear view of wire harness connector
    (to CAN No. 1 Junction Connector)

  1. Disconnect the CAN No. 1 junction connector.



    Corolla. Zre142 Aze141.Networking.Lin Communication System.Can Communication System Check Can Bus Lines For Short Circuit

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

    Text in Illustration
    *1
    		DLC3
    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    E11-6 (CANH) - E11-14 (CANL)
    		Ignition switch off
    		1 MΩ or higher


NG
REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO DLC3
OK


2.CHECK FOR SHORT IN CAN BUS WIRES (CAN NO. 2 JUNCTION CONNECTOR)

  1. Reconnect the CAN No. 1 junction connector.

  1. Disconnect the CAN No. 2 junction connector.



    Corolla. Zre142 Aze141.Networking.Lin Communication System.Can Communication System Check Can Bus Lines For Short Circuit

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

    Text in Illustration
    *1
    		DLC3
    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    E11-6 (CANH) - E11-14 (CANL)
    		Ignition switch off
    		108 to 132 Ω


NG
Go to step 7
OK


3.CHECK FOR SHORT IN CAN BUS WIRES (ECM MAIN WIRE)


    Corolla. Zre142 Aze141.Networking.Lin Communication System.Can Communication System Check Can Bus Lines For Short Circuit

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

    Text in Illustration
    *a
    		Front view of wire harness connector
    (to CAN No. 2 Junction Connector)
    HINT:
    The resistance must be measured after the CAN No. 2 junction connector is disconnected.
    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    A48-2 (CANH) - A48-4 (CANL)
    		Ignition switch off
    		108 to 132 Ω


NG
Go to step 6
OK


4.CHECK FOR SHORT IN CAN BUS WIRES (CAN NO. 2 JUNCTION CONNECTOR - SKID CONTROL ECU)


    Corolla. Zre142 Aze141.Networking.Lin Communication System.Can Communication System Check Can Bus Lines For Short Circuit

  1. Disconnect the skid control ECU connector.

    Text in Illustration
    *A
    		w/o VSC
    *B
    		w/ VSC
    *a
    		Front view of wire harness connector
    (to Skid Control ECU with Actuator)


    Corolla. Zre142 Aze141.Networking.Lin Communication System.Can Communication System Check Can Bus Lines For Short Circuit

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

    Text in Illustration
    *a
    		Front view of wire harness connector
    (to CAN No. 2 Junction Connector)
    HINT:
    The resistance must be measured after the skid control ECU connector and CAN No. 2 junction connector are disconnected.
    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    A48-1 (CANH) - A48-3 (CANL)
    		Ignition switch off
    		1 MΩ or higher


NG
REPAIR OR REPLACE CAN BUS BRANCH WIRE OR CONNECTOR (CAN NO. 2 JUNCTION CONNECTOR - SKID CONTROL ECU)
OK


5.CHECK FOR SHORT IN CAN BUS WIRES (SKID CONTROL ECU)

  1. Reconnect the CAN No. 2 junction connector.



    Corolla. Zre142 Aze141.Networking.Lin Communication System.Can Communication System Check Can Bus Lines For Short Circuit

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

    Text in Illustration
    *1
    		DLC3
    HINT:
    The resistance must be measured after the skid control ECU connector is disconnected.
    The resistance must be measured after the CAN No. 1 and CAN No. 2 junction connectors are reconnected.
    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    E11-6 (CANH) - E11-14 (CANL)
    		Ignition switch off
    		54 Ω or higher
Result:
Result
Proceed to
OK (w/o VSC)
A
OK (w/ VSC)
B
NG
C


B
REPLACE BRAKE ACTUATOR ASSEMBLY (COROLLA_ZRE142 RM000003CZU00MX.html)

C
REPLACE JUNCTION CONNECTOR (CAN No. 2)
A

REPLACE BRAKE ACTUATOR ASSEMBLY (COROLLA_ZRE142 RM0000013P6022X.html)

6.CHECK FOR SHORT IN CAN BUS WIRES (CAN NO. 2 JUNCTION CONNECTOR - ECM MAIN WIRE)


    Corolla. Zre142 Aze141.Networking.Lin Communication System.Can Communication System Check Can Bus Lines For Short Circuit

  1. Disconnect the ECM connector.

    Text in Illustration
    *a
    		Front view of wire harness connector
    (to ECM)


    Corolla. Zre142 Aze141.Networking.Lin Communication System.Can Communication System Check Can Bus Lines For Short Circuit

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

    Text in Illustration
    *a
    		Front view of wire harness connector
    (to CAN No. 2 Junction Connector)
    HINT:
    The resistance must be measured after the ECM connector and CAN No. 2 junction connector are disconnected.
    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    A48-2 (CANH) - A48-4 (CANL)
    		Ignition switch off
    		1 MΩ or higher
    Result:
    Result
    		Proceed to
    OK (for 2ZR-FE)
    		A
    OK (for 2AZ-FE)
    		B
    NG
    		C


B
REPLACE ECM (COROLLA_ZRE142 RM000002WT506MX.html)

C
REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (CAN NO. 2 JUNCTION CONNECTOR - ECM)
A

REPLACE ECM (COROLLA_ZRE142 RM000001CN0030X.html)

7.CHECK FOR SHORT IN CAN BUS WIRES (CAN NO. 1 JUNCTION CONNECTOR - CAN NO. 2 JUNCTION CONNECTOR)


  1. TMC made:



      Corolla. Zre142 Aze141.Networking.Lin Communication System.Can Communication System Check Can Bus Lines For Short Circuit

    1. Disconnect the CAN No. 1 junction connector.

      Text in Illustration
      *a
      		Front view of wire harness connector
      (to CAN No. 1 Junction Connector)

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

      HINT:
      The resistance must be measured after the CAN No. 2 junction connector is disconnected.
      Standard Resistance:
      Tester Connection
      		Switch Condition
      		Specified Condition
      E58-10 (CANH) - E58-21 (CANL)
      		Ignition switch off
      		1 MΩ or higher


  1. Except TMC made:



      Corolla. Zre142 Aze141.Networking.Lin Communication System.Can Communication System Check Can Bus Lines For Short Circuit

    1. Disconnect the CAN No. 1 junction connector.

      Text in Illustration
      *a
      		Front view of wire harness connector
      (to CAN No. 1 Junction Connector)

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

      HINT:
      The resistance must be measured after the CAN No. 2 junction connector is disconnected.
      Standard Resistance:
      Tester Connection
      		Switch Condition
      		Specified Condition
      E71-6 (CANH) - E71-17 (CANL)
      		Ignition switch off
      		1 MΩ or higher


NG
REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (CAN NO. 1 JUNCTION CONNECTOR - CAN NO. 2 JUNCTION CONNECTOR)
OK


8.CHECK FOR SHORT IN CAN BUS WIRES (CAN NO. 1 JUNCTION CONNECTOR - COMBINATION METER)


  1. TMC made:



      Corolla. Zre142 Aze141.Networking.Lin Communication System.Can Communication System Check Can Bus Lines For Short Circuit

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

      Text in Illustration
      *a
      		Front view of wire harness connector
      (to CAN No. 1 Junction Connector)
      HINT:
      The resistance must be measured after the CAN No. 1 junction connector is disconnected.
      Standard Resistance:
      Tester Connection
      		Switch Condition
      		Specified Condition
      E58-2 (CANH) - E58-13 (CANL)
      		Ignition switch off
      		108 to 132 Ω


  1. Except TMC made:



      Corolla. Zre142 Aze141.Networking.Lin Communication System.Can Communication System Check Can Bus Lines For Short Circuit

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

      Text in Illustration
      *a
      		Front view of wire harness connector
      (to CAN No. 1 Junction Connector)
      HINT:
      The resistance must be measured after the CAN No. 1 junction connector is disconnected.
      Standard Resistance:
      Tester Connection
      		Switch Condition
      		Specified Condition
      E71-4 (CANH) - E71-15 (CANL)
      		Ignition switch off
      		108 to 132 Ω


NG
Go to step 23
OK


9.CHECK FOR SHORT IN CAN BUS WIRES (CAN NO. 1 JUNCTION CONNECTOR - STEERING ANGLE SENSOR)


    Corolla. Zre142 Aze141.Networking.Lin Communication System.Can Communication System Check Can Bus Lines For Short Circuit

  1. Disconnect the steering angle sensor connector.

    Text in Illustration
    *a
    		Rear view of wire harness connector
    (to Steering Angle Sensor)


  1. TMC made:



      Corolla. Zre142 Aze141.Networking.Lin Communication System.Can Communication System Check Can Bus Lines For Short Circuit

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

      Text in Illustration
      *a
      		Front view of wire harness connector
      (to CAN No. 1 Junction Connector)
      HINT:
      The resistance must be measured after the steering angle sensor connector and CAN No. 1 junction connector are disconnected.
      Standard Resistance:
      Tester Connection
      		Switch Condition
      		Specified Condition
      E58-5 (CANH) - E58-16 (CANL)
      		Ignition switch off
      		1 MΩ or higher


  1. Except TMC made:



      Corolla. Zre142 Aze141.Networking.Lin Communication System.Can Communication System Check Can Bus Lines For Short Circuit

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

      Text in Illustration
      *a
      		Front view of wire harness connector
      (to CAN No. 1 Junction Connector)
      HINT:
      The resistance must be measured after the CAN No. 1 junction connector is disconnected.
      Standard Resistance:
      Tester Connection
      		Switch Condition
      		Specified Condition
      E71-8 (CANH) - E71-19 (CANL)
      		Ignition switch off
      		1 MΩ or higher


NG
REPAIR OR REPLACE CAN BUS BRANCH WIRE OR CONNECTOR (CAN NO. 1 JUNCTION CONNECTOR - STEERING ANGLE SENSOR)
OK


10.CHECK FOR SHORT IN CAN BUS WIRES (CAN NO. 1 JUNCTION CONNECTOR - POWER STEERING ECU)


    Corolla. Zre142 Aze141.Networking.Lin Communication System.Can Communication System Check Can Bus Lines For Short Circuit

  1. Disconnect the power steering ECU connector.

    Text in Illustration
    *a
    		Front view of wire harness connector
    (to Power Steering ECU)


  1. TMC made:



      Corolla. Zre142 Aze141.Networking.Lin Communication System.Can Communication System Check Can Bus Lines For Short Circuit

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

      Text in Illustration
      *a
      		Front view of wire harness connector
      (to CAN No. 1 Junction Connector)
      HINT:
      The resistance must be measured after the power steering ECU connector and CAN No. 1 junction connector are disconnected.
      Standard Resistance:
      Tester Connection
      		Switch Condition
      		Specified Condition
      E58-3 (CANH) - E58-14 (CANL)
      		Ignition switch off
      		1 MΩ or higher


  1. Except TMC made:



      Corolla. Zre142 Aze141.Networking.Lin Communication System.Can Communication System Check Can Bus Lines For Short Circuit

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

      Text in Illustration
      *a
      		Front view of wire harness connector
      (to CAN No. 1 Junction Connector)
      HINT:
      The resistance must be measured after the CAN No. 1 junction connector is disconnected.
      Standard Resistance:
      Tester Connection
      		Switch Condition
      		Specified Condition
      E71-3 (CANH) - E71-14 (CANL)
      		Ignition switch off
      		1 MΩ or higher


NG
REPAIR OR REPLACE CAN BUS BRANCH WIRE OR CONNECTOR (CAN NO. 1 JUNCTION CONNECTOR - POWER STEERING ECU)
OK


11.CHECK FOR SHORT IN CAN BUS WIRES (CAN NO. 1 JUNCTION CONNECTOR - CENTER AIRBAG SENSOR ASSEMBLY)


    Corolla. Zre142 Aze141.Networking.Lin Communication System.Can Communication System Check Can Bus Lines For Short Circuit

  1. Disconnect the center airbag sensor assembly connector.

    Text in Illustration
    *a
    		Rear view of wire harness connector
    (to Center Airbag Sensor Assembly)


  1. TMC made:



      Corolla. Zre142 Aze141.Networking.Lin Communication System.Can Communication System Check Can Bus Lines For Short Circuit

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

      Text in Illustration
      *a
      		Front view of wire harness connector
      (to CAN No. 1 Junction Connector)
      HINT:
      The resistance must be measured after the center airbag sensor assembly connector and CAN No. 1 junction connector are disconnected.
      Standard Resistance:
      Tester Connection
      		Switch Condition
      		Specified Condition
      E58-9 (CANH) - E58-20 (CANL)
      		Ignition switch off
      		1 MΩ or higher


  1. Except TMC made:



      Corolla. Zre142 Aze141.Networking.Lin Communication System.Can Communication System Check Can Bus Lines For Short Circuit

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

      Text in Illustration
      *a
      		Front view of wire harness connector
      (to CAN No. 1 Junction Connector)
      HINT:
      The resistance must be measured after the CAN No. 1 junction connector is disconnected.
      Standard Resistance:
      Tester Connection
      		Switch Condition
      		Specified Condition
      E71-5 (CANH) - E71-16 (CANL)
      		Ignition switch off
      		1 MΩ or higher


NG
REPAIR OR REPLACE CAN BUS BRANCH WIRE OR CONNECTOR (CAN NO. 1 JUNCTION CONNECTOR - CENTER AIRBAG SENSOR ASSEMBLY)
OK


12.CHECK FOR SHORT IN CAN BUS WIRES (CAN NO. 1 JUNCTION CONNECTOR - AIR CONDITIONING AMPLIFIER)


    Corolla. Zre142 Aze141.Networking.Lin Communication System.Can Communication System Check Can Bus Lines For Short Circuit

  1. Disconnect the air conditioning amplifier connector.

    Text in Illustration
    *A
    		Auto Air Conditioning
    *B
    		Manual Air Conditioning, for 2ZR-FE
    *C
    		Manual Air Conditioning, for 2AZ-FE
    *a
    		Front view of wire harness connector
    (to Air Conditioning Amplifier)


  1. TMC made:



      Corolla. Zre142 Aze141.Networking.Lin Communication System.Can Communication System Check Can Bus Lines For Short Circuit

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

      Text in Illustration
      *a
      		Front view of wire harness connector
      (to CAN No. 1 Junction Connector)
      HINT:
      The resistance must be measured after the air conditioning amplifier connector and CAN No. 1 junction connector are disconnected.
      Standard Resistance:
      Tester Connection
      		Switch Condition
      		Specified Condition
      E58-4 (CANH) - E58-15 (CANL)
      		Ignition switch off
      		1 MΩ or higher


  1. Except TMC made:



      Corolla. Zre142 Aze141.Networking.Lin Communication System.Can Communication System Check Can Bus Lines For Short Circuit

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

      Text in Illustration
      *a
      		Front view of wire harness connector
      (to CAN No. 1 Junction Connector)
      HINT:
      The resistance must be measured after the CAN No. 1 junction connector is disconnected.
      Standard Resistance:
      Tester Connection
      		Switch Condition
      		Specified Condition
      E71-7 (CANH) - E71-18 (CANL)
      		Ignition switch off
      		1 MΩ or higher


NG
REPAIR OR REPLACE CAN BUS BRANCH WIRE OR CONNECTOR (CAN NO. 1 JUNCTION CONNECTOR - AIR CONDITIONING AMPLIFIER)
OK


13.CHECK FOR SHORT IN CAN BUS WIRES (CAN NO. 1 JUNCTION CONNECTOR - MAIN BODY ECU)


    Corolla. Zre142 Aze141.Networking.Lin Communication System.Can Communication System Check Can Bus Lines For Short Circuit

  1. Disconnect the main body ECU connector.

    Text in Illustration
    *A
    		w/ Smart Key System
    *B
    		w/o Smart Key System
    *a
    		Rear view of wire harness connector
    (to Main Body ECU)


  1. TMC made:



      Corolla. Zre142 Aze141.Networking.Lin Communication System.Can Communication System Check Can Bus Lines For Short Circuit

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

      Text in Illustration
      *a
      		Front view of wire harness connector
      (to CAN No. 1 Junction Connector)
      HINT:
      The resistance must be measured after the main body ECU connector and CAN No. 1 junction connector are disconnected.
      Standard Resistance:
      Tester Connection
      		Switch Condition
      		Specified Condition
      E58-8 (CANH) - E58-19 (CANL)
      		Ignition switch off
      		1 MΩ or higher


  1. Except TMC made:



      Corolla. Zre142 Aze141.Networking.Lin Communication System.Can Communication System Check Can Bus Lines For Short Circuit

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

      Text in Illustration
      *a
      		Front view of wire harness connector
      (to CAN No. 1 Junction Connector)
      HINT:
      The resistance must be measured after the CAN No. 1 junction connector is disconnected.
      Standard Resistance:
      Tester Connection
      		Switch Condition
      		Specified Condition
      E71-1 (CANH) - E71-12 (CANL)
      		Ignition switch off
      		1 MΩ or higher


NG
REPAIR OR REPLACE CAN BUS BRANCH WIRE OR CONNECTOR (CAN NO. 1 JUNCTION CONNECTOR - MAIN BODY ECU)
OK


14.CHECK FOR SHORT IN CAN BUS WIRES (CAN NO. 1 JUNCTION CONNECTOR - YAW RATE SENSOR)


    Corolla. Zre142 Aze141.Networking.Lin Communication System.Can Communication System Check Can Bus Lines For Short Circuit

  1. Disconnect the yaw rate sensor connector.

    Text in Illustration
    *a
    		Front view of wire harness connector
    (to Yaw Rate Sensor)


  1. TMC made:



      Corolla. Zre142 Aze141.Networking.Lin Communication System.Can Communication System Check Can Bus Lines For Short Circuit

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

      Text in Illustration
      *a
      		Front view of wire harness connector
      (to CAN No. 1 Junction Connector)
      HINT:
      The resistance must be measured after the yaw rate sensor connector and CAN No. 1 junction connector are disconnected.
      Standard Resistance:
      Tester Connection
      		Switch Condition
      		Specified Condition
      E58-6 (CANH) - E58-17 (CANL)
      		Ignition switch off
      		1 MΩ or higher


  1. Except TMC made:



      Corolla. Zre142 Aze141.Networking.Lin Communication System.Can Communication System Check Can Bus Lines For Short Circuit

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

      Text in Illustration
      *a
      		Front view of wire harness connector
      (to CAN No. 1 Junction Connector)
      HINT:
      The resistance must be measured after the CAN No. 1 junction connector is disconnected.
      Standard Resistance:
      Tester Connection
      		Switch Condition
      		Specified Condition
      E71-9 (CANH) - E71-20 (CANL)
      		Ignition switch off
      		1 MΩ or higher


NG
REPAIR OR REPLACE CAN BUS BRANCH WIRE OR CONNECTOR (CAN NO. 1 JUNCTION CONNECTOR - YAW RATE SENSOR)
OK


15.CHECK FOR SHORT IN CAN BUS WIRES (CAN NO. 1 JUNCTION CONNECTOR - ACCESSORY GATEWAY)


  1. w/ remote engine starter:



      Corolla. Zre142 Aze141.Networking.Lin Communication System.Can Communication System Check Can Bus Lines For Short Circuit

    1. Disconnect the accessory gateway connector from the accessory.

      Text in Illustration
      *a
      		Rear view of wire harness connector
      (to Accessory Gateway)


  1. TMC made:



      Corolla. Zre142 Aze141.Networking.Lin Communication System.Can Communication System Check Can Bus Lines For Short Circuit

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

      Text in Illustration
      *a
      		Front view of wire harness connector
      (to CAN No. 1 Junction Connector)
      HINT:
      The resistance must be measured after the accessory gateway connector and CAN No. 1 junction connector are disconnected.
      Standard Resistance:
      Tester Connection
      		Switch Condition
      		Specified Condition
      E58-11 (CANH) - E58-22 (CANL)
      		Ignition switch off
      		1 MΩ or higher


  1. Except TMC made:



      Corolla. Zre142 Aze141.Networking.Lin Communication System.Can Communication System Check Can Bus Lines For Short Circuit

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

      Text in Illustration
      *a
      		Front view of wire harness connector
      (to CAN No. 1 Junction Connector)
      HINT:
      The resistance must be measured after the CAN No. 1 junction connector is disconnected.
      Standard Resistance:
      Tester Connection
      		Switch Condition
      		Specified Condition
      E71-11 (CANH) - E71-22 (CANL)
      		Ignition switch off
      		1 MΩ or higher
Result:
Result
Proceed to
OK
A
NG
B


B
REPAIR OR REPLACE CAN BUS BRANCH WIRE OR CONNECTOR (CAN NO. 1 JUNCTION CONNECTOR - ACCESSORY GATEWAY)
A


16.CHECK FOR SHORT IN CAN BUS WIRES (CAN NO. 1 JUNCTION CONNECTOR)

  1. Reconnect the CAN No. 1 junction connector and CAN No. 2 junction connector.



    Corolla. Zre142 Aze141.Networking.Lin Communication System.Can Communication System Check Can Bus Lines For Short Circuit

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

    Text in Illustration
    *1
    		DLC3
    HINT:
    1. The resistance must be measured after the main wire connected ECUs (ECM and combination meter), and CAN No. 1 and No. 2 junction connectors are reconnected.
    2. The resistance must be measured after the all branch wire connected ECUs and sensor connectors are disconnected.
    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    E11-6 (CANH) - E11-14 (CANL)
    		Ignition switch off
    		54 Ω or higher


NG
REPLACE JUNCTION CONNECTOR (CAN No. 1)
OK


17.CHECK FOR SHORT IN CAN BUS WIRES (STEERING ANGLE SENSOR)

  1. Reconnect the steering angle sensor connector.



    Corolla. Zre142 Aze141.Networking.Lin Communication System.Can Communication System Check Can Bus Lines For Short Circuit

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

    Text in Illustration
    *1
    		DLC3
    HINT:
    The resistance must be measured after the steering angle sensor, main wire connected ECUs (ECM and combination meter), and CAN No. 1 and No. 2 junction connectors are reconnected.
    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    E11-6 (CANH) - E11-14 (CANL)
    		Ignition switch off
    		54 Ω or higher


NG
REPLACE STEERING ANGLE SENSOR (COROLLA_ZRE142 RM000002VP1018X.html)
OK


18.CHECK FOR SHORT IN CAN BUS WIRES (POWER STEERING ECU)

  1. Reconnect the power steering ECU connector.



    Corolla. Zre142 Aze141.Networking.Lin Communication System.Can Communication System Check Can Bus Lines For Short Circuit

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

    Text in Illustration
    *1
    		DLC3
    HINT:
    The resistance must be measured after the power steering ECU, main wire connected ECUs (ECM and combination meter), and CAN No. 1 and No. 2 junction connectors are reconnected.
    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    E11-6 (CANH) - E11-14 (CANL)
    		Ignition switch off
    		54 Ω or higher
    Result:
    Result
    		Proceed to
    OK
    		A
    NG (for 2AZ-FE)
    		B
    NG (for 2ZR-FE)
    		C


B
REPLACE POWER STEERING ECU (COROLLA_ZRE142 RM000002XN605AX.html)

C
REPLACE POWER STEERING ECU (COROLLA_ZRE142 RM000002XN605BX.html)
A


19.CHECK FOR SHORT IN CAN BUS WIRES (CENTER AIRBAG SENSOR ASSEMBLY)

  1. Reconnect the center airbag sensor assembly connector.



    Corolla. Zre142 Aze141.Networking.Lin Communication System.Can Communication System Check Can Bus Lines For Short Circuit

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

    Text in Illustration
    *1
    		DLC3
    HINT:
    The resistance must be measured after the center airbag sensor assembly, main wire connected ECUs (ECM and combination meter), and CAN No. 1 and No. 2 junction connectors are reconnected.
    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    E11-6 (CANH) - E11-14 (CANL)
    		Ignition switch off
    		54 Ω or higher


NG
REPLACE CENTER AIRBAG SENSOR ASSEMBLY (COROLLA_ZRE142 RM000000UWV074X.html)
OK


20.CHECK FOR SHORT IN CAN BUS WIRES (AIR CONDITIONING AMPLIFIER)

  1. Reconnect the air conditioning amplifier connector.



    Corolla. Zre142 Aze141.Networking.Lin Communication System.Can Communication System Check Can Bus Lines For Short Circuit

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

    Text in Illustration
    *1
    		DLC3
    HINT:
    The resistance must be measured after the air conditioning amplifier, main wire connected ECUs (ECM and combination meter), and CAN No. 1 and No. 2 junction connectors are reconnected.
    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    E11-6 (CANH) - E11-14 (CANL)
    		Ignition switch off
    		54 Ω or higher


NG
REPLACE AIR CONDITIONING AMPLIFIER (COROLLA_ZRE142 RM000002XMC01VX.html)
OK


21.CHECK FOR SHORT IN CAN BUS WIRES (ACCESSORY GATEWAY)
HINT:
For vehicles without the remote engine starter, go to the next step.

  1. Reconnect the accessory gateway connector.



    Corolla. Zre142 Aze141.Networking.Lin Communication System.Can Communication System Check Can Bus Lines For Short Circuit

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

    Text in Illustration
    *1
    		DLC3
    HINT:
    The resistance must be measured after the accessory gateway, main wire connected ECUs (ECM and combination meter), and CAN No. 1 and No. 2 junction connectors are reconnected.
    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    E11-6 (CANH) - E11-14 (CANL)
    		Ignition switch off
    		54 Ω or higher


NG
REPLACE THE ACCESSORY
OK


22.CHECK FOR SHORT IN CAN BUS WIRES (MAIN BODY ECU)

  1. Reconnect the main body ECU connector.



    Corolla. Zre142 Aze141.Networking.Lin Communication System.Can Communication System Check Can Bus Lines For Short Circuit

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

    Text in Illustration
    *1
    		DLC3
    HINT:
    The resistance must be measured after the main body ECU, main wire connected ECUs (ECM and combination meter), and CAN No. 1 and No. 2 junction connectors are reconnected.
    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    E11-6 (CANH) - E11-14 (CANL)
    		Ignition switch off
    		54 Ω or higher


NG
REPLACE MAIN BODY ECU
OK

REPLACE YAW RATE SENSOR (COROLLA_ZRE142 RM000003D8S00IX.html)

23.CHECK FOR SHORT IN CAN BUS WIRES (COMBINATION METER ECU)


    Corolla. Zre142 Aze141.Networking.Lin Communication System.Can Communication System Check Can Bus Lines For Short Circuit

  1. Disconnect the combination meter ECU connector.

    Text in Illustration
    *a
    		Rear view of wire harness connector
    (to Combination Meter)


  1. TMC made:



      Corolla. Zre142 Aze141.Networking.Lin Communication System.Can Communication System Check Can Bus Lines For Short Circuit

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

      Text in Illustration
      *a
      		Front view of wire harness connector
      (to CAN No. 1 Junction Connector)
      HINT:
      The resistance must be measured after the combination meter ECU connector and CAN No. 1 junction connector are disconnected.
      Standard Resistance:
      Tester Connection
      		Switch Condition
      		Specified Condition
      E58-2 (CANH) - E58-13 (CANL)
      		Ignition switch off
      		1 MΩ or higher


  1. Except TMC made:



      Corolla. Zre142 Aze141.Networking.Lin Communication System.Can Communication System Check Can Bus Lines For Short Circuit

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

      Text in Illustration
      *a
      		Front view of wire harness connector
      (to CAN No. 1 Junction Connector)
      HINT:
      The resistance must be measured after the combination meter ECU connector and CAN No. 1 junction connector are disconnected.
      Standard Resistance:
      Tester Connection
      		Switch Condition
      		Specified Condition
      E71-4 (CANH) - E71-15 (CANL)
      		Ignition switch off
      		1 MΩ or higher


NG
REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (CAN NO. 1 JUNCTION CONNECTOR - COMBINATION METER)
OK

REPLACE COMBINATION METER (COROLLA_ZRE142 RM0000024D7032X.html)