DTC    U0073/94    Control Module Communication Bus Off

DTC    U0100/65    Lost Communication with ECM / PCM

DTC    U0123/62    Lost Communication with Yaw Rate Sensor Module

DTC    U0124/95    Lost Communication with Lateral Acceleration Sensor Module

DTC    U0126/63    Lost Communication with Steering Angle Sensor Module

DTC    U0130/68    Lost Communication with Steering Effort Control Module

DTC    U0131/67    Lost Communication with Power Steering Control Module

for Preparation Click here


DESCRIPTION

The skid control ECU inputs the signals from the ECM, power steering (EPS) ECU, steering control (VGRS) ECU, steering angle sensor, and yaw rate and acceleration sensor via the CAN communication system.

DTC No.
INF Code
DTC Detection Condition
Trouble Area
U0073/94
360
When either of the following is detected:
  1. After the output of data from the skid control ECU is completed, the sending continues for 5 seconds or more.
  2. The condition that bus OFF state occurs once or more within 100 ms occurs 10 times in succession. (Sent signals cannot be received.)
CAN communication system
U0100/65
165
166
167
When the following continues for 2 seconds or more:
  1. With the IG1 terminal voltage 10 V or more and the vehicle speed 9 mph (15 km/h) or more, data cannot be sent to the ECM or the skid control ECU cannot receiver signals.
  1. CAN communication system
  2. ECM
  3. Skid control ECU
U0123/62
338
When either of the following is detected:
  1. With the IG1 terminal voltage 10 V or more, data from the yaw rate sensor cannot be received for 1 second or more.
  2. With the IG1 terminal voltage 10 V or more, the following occurs 10 times in succession within 60 seconds.
  1. The condition that data from the yaw rate sensor cannot be received occurs once or more within 5 seconds.
  1. CAN communication system
  2. Yaw rate and acceleration sensor
  3. Skid control ECU
U0124/95
319
When either of the following is detected:
  1. With the IG1 terminal voltage 10 V or more, data from the acceleration sensor cannot be received for 1 second or more
  2. With the IG1 terminal voltage 10 V or more, the following occurs 10 times in succession within 60 seconds.
  1. The condition that data from the acceleration sensor cannot be received occurs once or more within 5 seconds.
  1. CAN communication system
  2. Yaw rate and acceleration sensor
  3. Skid control ECU
U0126/63
350
When either of the following is detected:
  1. With the IG1 terminal voltage 10 V or more, data from the steering angle sensor cannot be received for 1 second or more.
  2. With the IG1 terminal voltage 10 V or more, the following occurs 10 times in succession within 60 seconds.
  1. The condition that data from the steering angle sensor cannot be received occurs once or more within 5 seconds.
  1. CAN communication system
  2. Steering angle sensor
  3. Skid control ECU
U0130/68
370
371
When either of the following is detected:
  1. With the IG1 terminal voltage 10 V or more, data from the VGRS ECU cannot be received for 1 second or more.
  2. With the IG1 terminal voltage 10 V or more, the following occurs 10 times in succession within 60 seconds.
  1. The condition that data from the VGRS ECU cannot be received occurs once or more within 5 seconds.
  1. CAN communication system (Local and global)
  2. Steering control (VGRS) ECU
  3. Skid control ECU
U0131/67
374
375
When either of the following is detected:
  1. With the IG1 terminal voltage 10 V or more, data from the EPS ECU cannot be received for 1 second or more.
  2. With the IG1 terminal voltage 10 V or more, the following occurs 10 times in succession within 60 seconds.
  1. The condition that data from the EPS ECU cannot be received occurs once or more within 5 seconds.
  1. CAN communication system (Local and global)
  2. Power steering (EPS) ECU
  3. Skid control ECU

WIRING DIAGRAM


C109411E01


INSPECTION PROCEDURE

1.CHECK HARNESS AND CONNECTOR (MOMENTARY INTERRUPTION)

  1. Using the intelligent tester, check for any momentary interruption in the wire harness and connector corresponding to a DTC (Click here).

    ABS / VSC / TR(A)C: 
    Item
    (Display)
    		Measurement Item/
    Range (Display)
    		Normal Condition
    EFI Communication Open
    		EFI communication open detection / ERROR or NORMAL
    		ERROR: Momentary interruption
    NORMAL: Normal
    Steering Open
    		Steering sensor open detection / ERROR or NORMAL
    		ERROR: Momentary interruption
    NORMAL: Normal
    Yaw Rate Open
    		Yaw rate sensor open detection / ERROR or NORMAL
    		ERROR: Momentary interruption
    NORMAL: Normal

    OK:
    There are no momentary interruptions.

    HINT:
    Perform the above inspection before removing the sensor and connector.



NG
Go to step 3
OK


2.RECONFIRM DTC

  1. Record the output DTCs (for ABS, VSC, ECB and CAN communication) (Click here for ABS, VSC, ECB, or Click here for CAN).

    HINT:
    If the CAN communication system DTC and the relevant sensor DTCs are output simultaneously, troubleshoot the relevant sensor DTCs (for ABS, VSC and ECB) after the CAN communication system returns to normal.


    Result:

    Condition
    		Proceed To
    DTC is not output or cannot be read
    		A
    DTC is output
    		B (Click here for ABS, VSC, ECB, or Click here for CAN)



B
REPAIR CIRCUIT INDICATED BY OUTPUT CODE
A

REPAIR CAN COMMUNICATION SYSTEM 

3.REPAIR OR REPLACE HARNESS OR CONNECTOR

  1. Repair or replace the harness or connector.

  1. Check for any momentary interruption between the skid control ECU and each sensor or ECM.

  1. Check that there is no momentary interruption.


NEXT


Go to step 3

4.RECONFIRM DTC

  1. Clear the DTC (Click here).

  1. Start the engine.

  1. Drive the vehicle and turn the steering wheel to the right and left at a speed of 9 mph (15 km/h) or more.

  1. Check that no CAN communication system DTC is output.

  1. If ABS, VSC and ECB DTCs are output, record them.

    Result:

    Condition
    		Proceed To
    DTC for the CAN communication system is output
    		A (Click here)
    No DTC is output (ABS, VSC and ECB DTCs are output)
    		B (Click here)
    No DTC is output (No ABS, VSC and ECB DTCs are output)
    		C

    HINT:
    The CAN communication system must be normal when repairing the sensor DTCs (for ABS, VSC and ECB).



B
REPAIR CIRCUIT INDICATED BY OUTPUT CODE

C
END
A

REPAIR CAN COMMUNICATION SYSTEM