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: 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	Diagnostic Note
   EFI Open	EFI communication open detection / OPN DET or NORMAL	OPN DET: Momentary interruption NORMAL: Normal	-
   Steering Open	Steering angle sensor open detection / OPN DET or NORMAL	OPN DET: Momentary interruption NORMAL: Normal	-
   Yaw Rate Open	Yaw rate sensor open detection / OPN DET or NORMAL	OPN DET: 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. Turn the ignition switch off.
2. Record the output DTCs (for ABS, VSC system, and/or CAN communication system).

   HINT: 

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

NEXT → See step   5 

1. Turn the ignition switch off.
2. Repair or replace the harness and connector.
3. Check for any momentary interruption between the skid control ECU and each sensor or ECM. Refer to CHECK FOR INTERMITTENT PROBLEMS .
4. Check that there is no momentary interruption.

NEXT: Go to next step 

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

   Result

   Result	Proceed to
   DTC (CAN communication system DTC) is output	A
   DTC (ABS and/or VSC system DTC) is output	B
   DTC is not output	C

   HINT: 

   The CAN communication system must be normal when performing troubleshooting for each sensor DTC (for ABS and/or VSC system).

B → See step   6 

C → END 

A → See step   5