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: Procedure

1. Using the Techstream, check for any momentary interruption in the wire harness and connector corresponding to a DTC. Refer to CHECK FOR INTERMITTENT PROBLEMS .
   ABS / VSC / TRAC:
   
   

   Tester Display	Measurement Item/Range	Normal Condition
   EFI Communication Open	EFI communication open detection / ERROR or NORMAL	ERROR: Momentary interruption NORMAL: Normal
   Steering Open	Steering angle 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 → See step   3 

OK: Go to next step 

1. Record the output DTCs (for ABS, VSC, Electronically Controlled Brake System and CAN communication). Refer to DTC CHECK / CLEAR for ABS, VSC and Electronically Controlled Brake System. Refer to DIAGNOSIS SYSTEM 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 Electronically Controlled Brake System) after the CAN communication system returns to normal.

   Result

   Display (DTC Output)	Proceed To
   DTC is not output or cannot be read	A
   DTC is output	B

B → REPAIR CIRCUIT INDICATED BY OUTPUT CODE 

A → See step   5 

1. Repair or replace the harness or connector.
2. Check for any momentary interruption between the skid control ECU and each sensor or ECM.
3. Check that there is no momentary interruption.

NEXT: Go to next step 

1. Clear the DTC. Refer to DTC CHECK / CLEAR .
2. Start the engine.
3. Drive the vehicle and turn the steering wheel to the right and left at a speed of 15 km/h (9 mph) or more.
4. Check that no CAN communication system DTC is output.
5. If ABS, VSC and Electronically Controlled Brake System DTCs are output, record them.

   Result

   Display (DTC Output)	Proceed To
   DTC for the CAN communication system is output	A
   No DTC is output (ABS, VSC and Electronically Controlled Brake System DTCs are output)	B
   No DTC is output (No ABS, VSC and Electronically Controlled Brake System DTCs are output)	C

   HINT: 

   The CAN communication system must be normal when repairing the sensor DTCs (for ABS, VSC and Electronically Controlled Brake System).

B → See step   7 

C → END 

A → See step   6