Can Communication System Diagnosis System

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

  1. CAN BUS CHECK

  1. CHECK FOR INSTALLED SYSTEMS (ECUS AND SENSORS) THAT ADOPT CAN COMMUNICATION

  1. DTC TABLE BY ECU

  1. DTC COMBINATION TABLE

Can Communication System -- Diagnosis System



CAN BUS CHECK

  1. Using the Techstream, select "CAN Bus Check" from the "System Select".


CHECK FOR INSTALLED SYSTEMS (ECUS AND SENSORS) THAT ADOPT CAN COMMUNICATION

  1. Systems (ECUs, sensors) that adopt CAN communication vary depending on the vehicle and optional settings. Check which systems (ECUs, sensors) are installed on the vehicle.

    HINT:
    ECUs and sensors that are connected to the LIN communication system and the local CAN system are also displayed.

    ECU/Sensor Name
    		Applicability
    ECM
    		Installed on all vehicles
    Combination meter
    		Installed on all vehicles
    Air conditioning amplifier
    		Installed on all vehicles
    Center airbag sensor
    		Installed on all vehicles
    Power steering ECU
    		Installed on all vehicles
    Main body ECU
    		Installed on all vehicles
    Skid control ECU
    		Installed on all vehicles
    Steering angle sensor
    		Vehicles with VSC
    Yaw rate sensor
    		Vehicles with VSC
    Certification ECU
    		Vehicles with Smart key system

DTC TABLE BY ECU
HINT:
  1. In the CAN communication system, CAN communication system DTCs can be displayed by the ECU using the Techstream.
  2. If CAN communication system DTCs are output, trouble cannot be determined only by the DTCs. Perform troubleshooting according to How to Proceed with Troubleshooting (COROLLA_ZRE142 RM000000WI60ACX.html).

  1. SKID CONTROL ECU (w/o VSC)

    HINT:
    DTC communication uses the CAN communication system.

    DTC No.
    		Detection Item
    U0073
    		Control Module Communication Bus Off

  2. SKID CONTROL ECU (w/ VSC)

    HINT:
    DTC communication uses the CAN communication system.

    DTC No.
    		Detection Item
    U0073
    		Control Module Communication Bus Off
    U0100
    		Lost Communication with ECM/PCM "A"
    U0123
    		Lost Communication with Yaw Rate Sensor Module
    U0124
    		Lost Communication with Lateral Acceleration Sensor Module
    U0126
    		Lost Communication with Steering Angle Sensor Module

  3. AIR CONDITIONING AMPLIFIER

    HINT:
    1. DTC communication uses the CAN communication system.
    2. The following DTC is output only for current malfunctions.

    DTC No.
    		Detection Item
    B1499
    		Multiplex Communication Circuit

  4. COMBINATION METER

    HINT:
    DTC communication uses the CAN communication system.

    DTC No.
    		Detection Item
    U0100
    		Lost Communication with ECM/PCM "A"
    U0129
    		Lost Communication with Brake System Control Module

  5. POWER STEERING ECU

    HINT:
    DTC communication uses the CAN system.

    DTC No.
    		Detection Item
    U0100
    		Lost Communication with ECM
    U0129
    		Lost Communication with Anti-lock Brake System (ABS) Control Module

  6. MAIN BODY ECU

    HINT:
    DTC communication uses the CAN system.

    DTC No.
    		Detection Item
    U0327
    		Software Incompatibility with Vehicle Security Control Module
    U1002
    		Lost Communication with Gateway Module

  7. ECM (for 2AZ-FE)

    HINT:
    DTC communication uses the CAN communication system.

    DTC No.
    		Detection Item
    U0129
    		Lost Communication with Brake System Control Module

  8. ECM (for 2ZR-FE)

    HINT:
    The ECM is connected to the CAN communication system, but CAN communication DTCs are not output.

  9. CENTER AIRBAG SENSOR

    HINT:
    The center airbag sensor is connected to the CAN communication system, but CAN communication DTCs are not output.

  10. STEERING ANGLE SENSOR (w/ VSC)

    HINT:
    The steering angle sensor is connected to the CAN communication system, but CAN communication DTCs are not output.

  11. YAW RATE SENSOR (w/ VSC)

    HINT:
    The yaw rate sensor is connected to the CAN communication system, but CAN communication DTCs are not output.

  12. CERTIFICATION ECU

    HINT:
    The certification ECU is connected to the CAN communication system, but CAN communication DTCs are not output.

DTC COMBINATION TABLE

  1. CAN No. 1 Bus (w/o VSC)

    DTC
    		Trouble Mode
    Output from
    		Output DTC
    		ECM Communication Stop Mode
    		Skid Control ECU Communication Stop Mode
    		Power Steering ECU Communication Stop Mode
    		Center Airbag Sensor Communication Stop Mode
    		Air Conditioning Amplifier Communication Stop Mode
    		Combination Meter ECU Communication Stop Mode
    		Main Body ECU Communication Stop Mode
    Skid Control ECU
    		U0073
    		X
    		○*1
    		X
    		X
    		X
    		X
    		X
    Combination Meter
    		U0100
    		○
    		X
    		X
    		X
    		X
    		○*1
    		X
    U0129
    		X
    		○
    		X
    		X
    		X
    		○*1
    		X
    Power Steering ECU
    		U0100
    		○
    		X
    		○*1
    		X
    		X
    		X
    		X
    U0129
    		X
    		○
    		○*1
    		X
    		X
    		X
    		X
    Air Conditioning
    		B1499
    		○*2, *3
    		X
    		X
    		X
    		○*2, *3
    		X
    		X
    ECM (for 2AZ-FE)
    		U0129
    		○*1
    		○
    		X
    		X
    		X
    		X
    		X

    HINT:
    1. ○: Set
    2. X: Not set or may be set according to the malfunctioning part when one side of the CAN bus wire opens
    3. *1: DTC is not output during communication error
    4. *2: Only current DTCs are output
    5. *3: Stored only when there is a communication error between the ECM and combination meter

  2. CAN No. 1 Bus (w/ VSC)

    DTC
    		Trouble Mode
    Output from
    		Output DTC
    		ECM Communication Stop Mode
    		Skid Control ECU Communication Stop Mode
    		Steering Angle Sensor Communication Stop Mode
    		Yaw Rate Sensor Communication Stop Mode
    		Power Steering ECU Communication Stop Mode
    Skid Control ECU
    		U0073
    		X
    		○*1
    		X
    		X
    		X
    U0100
    		○
    		○*1
    		X
    		X
    		X
    U0123
    		X
    		○*1
    		X
    		○
    		X
    U0124
    		X
    		○*1
    		X
    		○
    		X
    U0126
    		X
    		○*1
    		○
    		X
    		X
    Combination Meter
    		U0100
    		○
    		X
    		X
    		X
    		X
    U0129
    		X
    		○
    		X
    		X
    		X
    Power Steering ECU
    		U0100
    		○
    		X
    		X
    		X
    		○*1
    U0129
    		X
    		○
    		X
    		X
    		○*1
    Air Conditioning
    		B1499
    		○*2, *3
    		X
    		X
    		X
    		X
    ECM (for 2AZ-FE)
    		U0129
    		○*1
    		○
    		X
    		X
    		X

    HINT:
    1. ○: Set
    2. X: Not set or may be set according to the malfunctioning part when one side of the CAN bus wire opens
    3. *1: DTC is not output during communication error
    4. *2: Only current DTCs are output
    5. *3: Stored only when there is a communication error between the ECM and combination meter

    DTC
    		Trouble Mode
    Output from
    		Output DTC
    		Center Airbag Sensor Communication Stop Mode
    		Air Conditioning Amplifier Communication Stop Mode
    		Combination Meter ECU Communication Stop Mode
    		Main Body ECU Communication Stop Mode
    Skid Control ECU
    		U0073
    		X
    		X
    		X
    		X
    U0100
    		X
    		X
    		X
    		X
    U0123
    		X
    		X
    		X
    		X
    U0124
    		X
    		X
    		X
    		X
    U0126
    		X
    		X
    		X
    		X
    Combination Meter
    		U0100
    		X
    		X
    		○*1
    		X
    U0129
    		X
    		X
    		○*1
    		X
    Power Steering ECU
    		U0100
    		X
    		X
    		X
    		X
    U0129
    		X
    		X
    		X
    		X
    Air Conditioning
    		B1499
    		X
    		○*2, *3
    		X
    		X
    ECM (for 2AZ-FE)
    		U0129
    		X
    		X
    		X
    		X
    HINT:
    1. ○: Set
    2. X: Not set or may be set according to the malfunctioning part when one side of the CAN bus wire opens
    3. *1: DTC is not output during communication error
    4. *2: Only current DTCs are output
    5. *3: Output CAN communication interruption of engine and meter
    6. ECM Communication Stop Mode (COROLLA_ZRE142 RM000000WIP0BRX.html)
    7. Skid Control ECU Communication Stop Mode (COROLLA_ZRE142 RM000001V2C05JX.html)
    8. Steering Angle Sensor Communication Stop Mode (COROLLA_ZRE142 RM000000WIH07YX.html)
    9. Yaw Rate Sensor Communication Stop Mode (COROLLA_ZRE142 RM000000WIJ088X.html)
    10. Combination Meter Communication Stop Mode (COROLLA_ZRE142 RM000001F1S072X.html)
    11. Air Conditioning Amplifier Communication Stop Mode (COROLLA_ZRE142 RM000001F1U04PX.html)
    12. Center Airbag Sensor Communication Stop Mode (COROLLA_ZRE142 RM000001WG905MX.html)
    13. Power Steering ECU Communication Stop Mode (COROLLA_ZRE142 RM000001RT004NX.html)
    14. Main Body ECU Communication Stop Mode (COROLLA_ZRE142 RM000001F1V064X.html)