DTC U0073/94 Control Module Communication Bus OFF; 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 U0293/59 Communication Error from HV ECU: Wiring Diagram

1. Using the intelligent tester, check for any momentary interruption in the wire harness and connector corresponding to a DTC (See CHECK FOR INTERMITTENT PROBLEMS  ).

   ABS / VSC / TRAC: 

   ABS / VSC / TRAC ITEM
   
   

   Item (Display)	Measurement Item / Range (Display)	Normal Condition
   HV COM OPN	HV communication open detection / ERROR or NORMAL	ERROR: Momentary interruption NORMAL: Normal
   STEERING OPN	Steering sensor open detection / ERROR or NORMAL	ERROR: Momentary interruption NORMAL: Normal
   YAW RATE OPN	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 : GO TO NEXT STEP 

1. Record the output DTCs (for ABS, VSC, ECB and CAN communication) (See DTC CHECK / CLEAR  ).

   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 

   RESULT REFERENCE
   
   

   Condition	Proceed to
   DTC is not output	A
   DTC is output	B

B : REPAIR CIRCUIT INDICATED BY OUTPUT CODE 

A : REPAIR CAN COMMUNICATION SYSTEM 

1. Repair or replace the harness or connector (See CAN COMMUNICATION SYSTEM ).
2. Check for any momentary interruption between the skid control ECU and each sensor or ECM (See CHECK FOR INTERMITTENT PROBLEMS  ).
3. Check that there is no momentary interruption.

1. Clear the DTC (See DTC CHECK / CLEAR  ).
2. Turn the ignition switch on.
3. Drive the vehicle and turn the steering wheel to the right and left at a speed of 9 mph (15 km/h) or more.
4. Check that no CAN communication system DTC is output (See DTC CHECK / CLEAR  ).
5. If ABS, VSC and BCB DTCs are output, record them.

   Result 

   RESULT REFERENCE
   
   

   Condition	Proceed to
   DTC for the CAN communication system is output	A
   No DTC is output (ABS, VSC and ECB DTCs are output)	B
   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 EBC).

B : REPAIR CIRCUIT INDICATED BY OUTPUT CODE 

C : END 

A : REPAIR CAN COMMUNICATION SYSTEM