Can Communication System Diagnosis System

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

  1. BUS CHECK (COMMUNICATION MALFUNCTION DTC)

  1. BUS CHECK (COMMUNICATION BUS CHECK)

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

  1. DTC TABLE BY ECU

  1. DTC COMBINATION TABLE

Can Communication System -- Diagnosis System



BUS CHECK (COMMUNICATION MALFUNCTION DTC)
HINT:
Only CAN communication system DTCs for each ECU can be output to the intelligent tester.


    Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35

  1. Select "Bus Check" from the "System Select" screen on the intelligent tester.



    2. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35

  2. Select "Communication Malfunction DTC" from the "Bus Check" screen, and then select "Enter".



    3. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35

  3. Select the system of the DTC to be checked and select "Details".



    4. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35

  4. CAN communication system DTCs are output.


BUS CHECK (COMMUNICATION BUS CHECK)
HINT:
The ECUs and sensors that are properly connected to the CAN communication system can be displayed using the intelligent tester.


    Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35

  1. Select "Communication Bus Check" from the "Bus Check" screen.



    2. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35

  2. The screen displays the ECUs and sensors that are properly connected to the CAN communication system.

    HINT:
    If any properly connected ECUs or sensors are not displayed, there is a communication stop in the system (RAV4_ACA30 RM000001RSR00WX.html).


    3. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35

  3. "There is no system connected to the communication bus" is displayed if there are no ECUs or sensors connected to the CAN bus.


CHECK INSTALLED SYSTEMS (ECUS AND SENSORS) THAT USE CAN COMMUNICATION

  1. System (ECUs and sensors) that use CAN communication vary depending on the vehicle's optional settings. Check which systems (ECUs and sensors) are installed on the vehicle.

    ECU / Sensor name
    		Installed to
    Brake actuator (skid control ECU)
    		Vehicles with an anti-lock brake system
    ABS and traction actuator (skid control ECU)
    		Vehicles with a vehicle stability control system
    Steering angle sensor
    		Vehicles for a 2WD (with vehicle stability control system) and 4WD
    Yaw rate sensor
    		Vehicles with a vehicle stability control system
    Air conditioning amplifier
    		All vehicles (for Automatic air conditioning system and for Manual air conditioning system)
    ECM
    		All vehicles
    Center airbag sensor assembly
    		All vehicles
    Power steering ECU
    		All vehicles
    Main body ECU
    		All vehicles
    Combination meter ECU
    		All vehicles
    4WD control ECU
    		For 4WD
    Certification ECU
    		Vehicles with an entry and start system

DTC TABLE BY ECU
HINT:
  1. In the CAN communication system, CAN communication system DTCs output by the ECU can be displayed by using the intelligent tester.
  2. If CAN communication system DTCs are output, the trouble cannot be determined solely from the DTCs. Perform troubleshooting according to "How to Proceed with Troubleshooting" (RAV4_ACA30 RM000001RSO01MX.html).

  1. BRAKE ACTUATOR (SKID CONTROL ECU)
    For vehicles with anti-lock brake system only.

    HINT:
    DTC communication uses the CAN communication system.

    DTC No.
    		Detection Item
    U0073/94
    		Control Module Communication Bus OFF

  2. ABS AND TRACTION ACTUATOR (SKID CONTROL ECU)
    For vehicles with a vehicle stability control system only.

    HINT:
    DTC communication uses the CAN communication system.

    DTC No.
    		Detection Item
    U0073/94
    		Control Module Communication Bus OFF
    U0100/65
    		Lost Communication with ECM / PCM
    U0123/62
    		Lost Communication with Yaw Rate Sensor Module
    U0124/95
    		Lost Communication with Lateral Acceleration Sensor Module
    U0126/63
    		Lost Communication with Steering Angle Sensor Module

  3. POWER STEERING ECU

    HINT:
    DTC communication uses the CAN communication system.

    DTC No.
    		Detection Item
    U0073/49
    		Control Module Communication Bus OFF
    U0100/41
    		Lost Communication with ECM
    U0129/42
    		Lost Communication with Anti-lock Brake System (ABS) Control Module

  4. ECM

    HINT:
    DTC communication uses the CAN communication system.

    DTC No.
    		Detection Item
    U0122
    		Lost Communication with Vehicle Dynamic Control Module
    U0129
    		Lost Communication with Brake System Control Module

  5. AIR CONDITIONING AMPLIFIER
    For vehicles with an air conditioning (for Automatic Air Conditioning System and for Manual Air Conditioning System)

    HINT:
    DTC communication uses the CAN communication system.

    DTC No.
    		Detection Item
    B1499/99
    		Multiplex Communication Circuit

  6. COMBINATION METER ECU

    HINT:
    DTC communication uses the CAN communication system.

    DTC No.
    		Detection Item
    U0100
    		Lost Communication with ECM/PCM "A"
    U0129
    		Lost Communication with Skid Control ECU

  7. MAIN BODY ECU
    For vehicles with an entry and start system only.

    HINT:
    DTC communication uses the CAN communication system.

    DTC No.
    		Detection Item
    B1207
    		Certification ECU Communication Malfunction
    B2326
    		CAN NO. 2 Bus Line Communication Malfunction

  8. 4WD CONTROL ECU
    For vehicle for a 4WD only.

    HINT:
    DTC communication uses the CAN communication system.

    DTC No.
    		Detection Item
    U0073/86
    		Control Module Communication Bus OFF
    U0100/85
    		Lost Communication with ECM / PCM "A"
    U0126/84
    		Lost Communication with Steering Angle Sensor Module
    U0129/83
    		Lost Communication with Brake System Control Module

  9. CENTER AIRBAG SENSOR

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

  10. CERTIFICATION ECU
    For vehicles with an entry and start system only.

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

  11. STEERING ANGLE SENSOR
    For vehicles for a 2WD (with vehicle stability control system) and 4WD only.

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

  12. YAW RATE SENSOR
    For vehicles with a vehicle stability control system only.

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

DTC COMBINATION TABLE

V bus
DTC
Detected Communication Stop Mode
Output from
Output DTC
Brake Actuator (Skid Control ECU) Communication Stop Mode
ABS and Traction Actuator (Skid Control ECU) Communication Stop Mode
Power Steering ECU Communication Stop Mode
Steering Angle Sensor Communication Stop Mode
Yaw Rate Sensor Communication Stop Mode
ECM Communication Stop Mode
Brake Actuator (Skid Control ECU)
U0073/94
○
X
X
X
X
X
ABS and Traction Actuator (Skid Control ECU)
U0073/94
X
○*1
X
X
X
X
U0100/65
X
○*1
X
X
X
○
U0123/62
X
○*1
X
X
○
X
U0124/95
X
○*1
X
X
○
X
U0126/63
X
○*1
X
○
X
X
Power Steering ECU
U0073/49
X
X
○*1
X
X
X
U0100/41
X
X
○*1
X
X
○
U0129/42
○
○
○*1
X
X
X
ECM
U0122
X
○
X
X
X
○*1
U0129
○
○
X
X
X
○*2
Air Conditioning Amplifier
B1499/99*3
X
X
X
X
X
○
Combination Meter ECU
U0100
X
X
X
X
X
○
U0129
○
○
X
X
X
X
Main Body ECU
B1207
-
-
-
-
-
-
B2326
-
-
-
-
-
-
4WD Control ECU
U0073/86
X
X
X
X
X
X
U0100/85
X
X
X
X
X
○
U0126/84
X
X
X
○
X
X
U0129/83
○
○
X
X
X
X
HINT:
  1. ○: Stored.
  2. X: When one side of branch wire is open, storage may occur.
  3. -: Not stored.
  4. *1: Only stored when communication recovery has occurred. During communication stop, this DTC cannot be stored.
  5. *2: Only stored when communication with ECM and combination meter ECU stop simultaneously.
  6. *3: Only stored when air conditioning amplifier is malfunctioning.

V bus
DTC
Detected Communication Stop 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
4WD Control ECU Communication Stop Mode
Brake Actuator (Skid Control ECU)
U0073/94
X
X
X
X
X
ABS and Traction Actuator (Skid Control ECU)
U0073/94
X
X
X
X
X
U0100/65
X
X
X
X
X
U0123/62
X
X
X
X
X
U0124/95
X
X
X
X
X
U0126/63
X
X
X
X
X
Power Steering ECU
U0073/49
X
X
X
X
X
U0100/41
X
X
X
X
X
U0129/42
X
X
X
X
X
ECM
U0122
X
X
X
X
X
U0129
X
X
X
X
X
Air Conditioning Amplifier
B1499/99*3
X
-
○*2
X
X
Combination Meter ECU
U0100
X
X
○*1
X
X
U0129
X
X
○*1
X
X
Main Body ECU
B1207
-
-
-
-
-
B2326
-
-
-
-
-
4WD Control ECU
U0073/86
X
X
X
X
○*1
U0100/85
X
X
X
X
○*1
U0126/84
X
X
X
X
○*1
U0129/83
X
X
X
X
○*1
HINT:
  1. ○: Outputs under condition shown in table above
  2. X: When one side of branch wire is open, storage may occur.
  3. -: Not stored.
  4. Check the stop mode by using the results of the Bus Check for the center airbag sensor (RAV4_ACA30 RM000001TN900SX.html) and certification ECU (RAV4_ACA30 RM000001YPY003X.html).
  5. *1: Only stored when communication recovery has occurred. During communication stop, this DTC cannot be stored.
  6. *2: Only stored when communication with ECM and combination meter ECU stop simultaneously.
  7. *3: Only stored when air conditioning amplifier is malfunctioning.

MS bus
DTC
Detected Communication Stop Mode
Output from
Output DTC
Main Body ECU Communication Stop Mode
Certification ECU Communication Stop Mode
Brake Actuator (Skid Control ECU)
U0073/94
-
-
ABS and Traction Actuator (Skid Control ECU)
U0073/94
-
-
U0100/65
-
-
U0123/62
-
-
U0124/95
-
-
U0126/63
-
-
Power Steering ECU
U0073/49
-
-
U0100/41
-
-
U0129/42
-
-
ECM
U0122
-
-
U0129
-
-
Air Conditioning Amplifier
B1499/99*
-
-
Combination Meter ECU
U0100
-
-
U0129
-
-
Main Body ECU
B1207
○
○
B2326
○
○
4WD Control ECU
U0073/86
-
-
U0100/85
-
-
U0126/84
-
-
U0129/83
-
-
HINT:
  1. ○: Stored.
  2. X: When one side of branch wire is open, storage may occur.
  3. -: Not stored.
  4. *: Only stored when air conditioning amplifier is malfunctioning.

  1. Perform troubleshooting according to the combination of DTCs output.

    1. Brake Actuator (Skid Control ECU) Communication Stop Mode: (RAV4_ACA30 RM000001Y6N004X.html)
    2. ABS and Traction Actuator (Skid Control ECU) Communication Stop Mode: (RAV4_ACA30 RM000001Y6O009X.html)
    3. Power Steering ECU Communication Stop Mode: (RAV4_ACA30 RM000001RT000WX.html)
    4. Steering Angle Sensor Communication Stop Mode: (RAV4_ACA30 RM000001RSS00AX.html)
    5. Yaw Rate Sensor Communication Stop Mode: (RAV4_ACA30 RM000001RSU009X.html)
    6. ECM Communication Stop Mode: (RAV4_ACA30 RM000001RSZ00VX.html)
    7. Air Conditioning Amplifier Communication Stop Mode: (RAV4_ACA30 RM000001RTD00SX.html)
    8. Combination Meter ECU Communication System: (RAV4_ACA30 RM000001TNA00SX.html)
    9. Main Body ECU Communication Stop Mode: (RAV4_ACA30 RM000001RTG00TX.html)
    10. 4WD Control ECU Communication Stop Mode: (RAV4_ACA30 RM000001RTF007X.html)