Can Communication System (For Hatchback Except Separate Type Yaw Rate Sensor) Diagnosis System

Power Source Network. Yaris. Ncp93, 131
Networking. Yaris. Ncp93, 131

  1. 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 (For Hatchback Except Separate Type Yaw Rate Sensor) -- Diagnosis System



BUS CHECK
HINT:
Only CAN communication system DTCs for each ECU can be displayed on the Techstream.

  1. Select "CAN Bus Check" from "System Select".


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

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

    ECU/Sensor Name
    		Tester Display
    		Installed on
    Air conditioning amplifier assembly
    		Air Conditioning Amplifier
    		All vehicles
    Airbag sensor assembly
    		Airbag
    		All vehicles
    Combination meter assembly
    		Combination Meter
    		All vehicles
    ECM
    		ECM (Engine)
    		All vehicles
    Main body ECU (multiplex network body ECU)
    		Main Body
    		All vehicles
    Power steering ECU assembly
    		Power Steering (EPS)
    		All vehicles
    Skid control ECU (brake actuator assembly)
    		Skid Control (ABS/VSC/TRAC)
    		All vehicles
    Steering angle sensor (spiral cable sub-assembly)
    		Spiral cable (Steering Angle Sensor)
    		w/ VSC


DTC TABLE BY ECU
HINT:
  1. In the CAN communication system, CAN communication system DTCs stored by the ECU can be output from the ECU by using the Techstream.
  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".

  1. ECM

    HINT:
    DTC communication uses the CAN communication system.

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

  2. MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

    HINT:
    DTC communication uses the CAN communication system.

    DTC No.
    		Detection Item
    U0100
    		Lost Communication With ECM/PCM "A"
    U0101
    		Lost Communication with TCM
    U0151
    		Lost Communication With Restraints Control Module
    U0155
    		Lost Communication with Instrument Panel Cluster (IPC) Control Module
    U0164
    		Lost Communication With HVAC Control Module

  3. SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) (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
    U0142
    		Lost Communication with Body Control Module "B"

  4. SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) (w/o VSC)

    HINT:
    DTC communication uses the CAN communication system.

    DTC No.
    		Detection Item
    U0073
    		Control Module Communication Bus Off
    U0142
    		Lost Communication with Body Control Module "B"

  5. POWER STEERING ECU ASSEMBLY

    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

  6. COMBINATION METER ASSEMBLY

    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
    U0131
    		Lost Communication with Power Steering Control Module
    U0151
    		Lost Communication with Restraints Control Module

  7. AIR CONDITIONING AMPLIFIER ASSEMBLY

    HINT:
    DTC communication uses the CAN communication system.

    DTC No.
    		Detection Item
    U0100
    		Lost Communication With ECM/PCM "A"
    U0131
    		Lost Communication With Power Steering Control Module
    U0142
    		Lost Communication With Body Control Module "B"
    U0155
    		Lost Communication With Instrument Panel Cluster (IPC) Control Module

  8. STEERING ANGLE SENSOR (SPIRAL CABLE SUB-ASSEMBLY) (w/ VSC)

    HINT:
    The steering angle sensor (spiral cable sub-assembly) is connected to the CAN communication system but CAN communication DTCs are not stored.

  9. AIRBAG SENSOR ASSEMBLY

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

DTC COMBINATION TABLE
HINT:
  1. ○: Stored.
  2. X: When one side of the branch wire is open, storage may occur.
  3. -: Not stored.
  4. *1: During a communication stop, cannot be stored.

Output from
Output DTC
Detected Communication Stop Mode
V Bus
ECM Communication Stop Mode
Center Airbag Sensor Communication Stop Mode
ABS and Traction Actuator (Skid Control ECU) Communication Stop Mode
Brake Actuator (Skid Control ECU) Communication Stop Mode
ECM
U0129
○*1
-
○
○
Skid control ECU (brake actuator assembly) (w/ VSC)
U0073
X
X
○*1
-
U0100
○
X
○*1
-
U0123
X
○
○*1
-
U0124
X
○
○*1
-
U0126
X
X
○*1
-
U0142
X
X
○*1
-
Skid control ECU (brake actuator assembly) (w/o VSC)
U0073
X
X
-
○*1
U0142
X
X
-
○*1
Air conditioning amplifier assembly
U0100
○
-
-
-
U0131
-
-
-
-
U0142
-
-
-
-
U0155
-
-
-
-
Main body ECU (multiplex network body ECU)
U0100
○
-
-
-
U0101
○
-
-
-
U0151
-
○
-
-
U0155
-
-
-
-
U0164
-
-
-
-
Power steering ECU assembly
U0100
○
-
-
-
U0129
-
-
○
○
Combination meter assembly
U0100
○
-
-
-
U0129
-
-
○
○
U0131
-
-
-
-
U0151
-
○
-
-
HINT:
  1. ○: Stored.
  2. X: When one side of the branch wire is open, storage may occur.
  3. -: Not stored.
  4. *1: During a communication stop, cannot be stored.

Output from
Output DTC
Detected Communication Stop Mode
V Bus
Air Conditioning Amplifier Communication Stop Mode
Audio Receiver Assembly Communication Stop Mode
Main Body ECU Communication Stop Mode
ECM
U0129
-
-
-
Skid control ECU (brake actuator assembly) (w/ VSC)
U0073
X
X
X
U0100
X
X
X
U0123
X
X
X
U0124
X
X
X
U0126
X
X
X
U0142
X
X
○
Skid control ECU (brake actuator assembly) (w/o VSC)
U0073
X
X
X
U0142
X
X
○
Air conditioning amplifier assembly
U0100
○*1
-
-
U0131
○*1
-
-
U0142
○*1
-
○
U0155
○*1
-
-
Main body ECU (multiplex network body ECU)
U0100
-
-
○*1
U0101
-
-
○*1
U0151
-
-
○*1
U0155
-
-
○*1
U0164
○
-
○*1
Power steering ECU assembly
U0100
-
-
-
U0129
-
-
-
Combination meter assembly
U0100
-
-
-
U0129
-
-
-
U0131
-
-
-
U0151
-
-
-
HINT:
  1. ○: Stored.
  2. X: When one side of the branch wire is open, storage may occur.
  3. -: Not stored.
  4. *1: During a communication stop, cannot be stored.

Output from
Output DTC
Detected Communication Stop Mode
V Bus
Power Steering ECU Communication Stop Mode
Steering Angle Sensor Communication Stop Mode
Combination Meter ECU Communication Stop Mode
ECM
U0129
-
-
-
Skid control ECU (brake actuator assembly) (w/ VSC)
U0073
X
X
X
U0100
X
X
X
U0123
X
X
X
U0124
X
X
X
U0126
X
○
X
U0142
X
X
X
Skid control ECU (brake actuator assembly) (w/o VSC)
U0073
X
X
X
U0142
X
X
X
Air conditioning amplifier assembly
U0100
-
-
-
U0131
○
-
-
U0142
-
-
-
U0155
-
-
○
Main body ECU (multiplex network body ECU)
U0100
-
-
-
U0101
-
-
-
U0151
-
-
-
U0155
-
-
○
U0164
-
-
-
Power steering ECU assembly
U0100
○*1
-
-
U0129
○*1
-
-
Combination meter assembly
U0100
-
-
○*1
U0129
○
-
○*1
U0131
-
-
○*1
U0151
-
-
○*1
HINT:
  1. ○: Stored.
  2. X: When one side of the branch wire is open, storage may occur.
  3. -: Not stored.
  4. *1: During a communication stop, cannot be stored.