DTC C1783: Front Wheels Speed Sensor Signal Malfunction [08/2019 - ]: Procedure

1. Clear the DTCs.

   Refer to DTC CHECK / CLEAR [08/2019 - ]

2. Perform a road test.
3. Check if DTC U0122 is output.

   Refer to DTC CHECK / CLEAR [08/2019 - ]

   Result

   Result	Proceed to
   DTC is not output or only DTC C1783 is output	A
   DTCs C1783 and U0122 are output	B

Result: 

B 

GO TO DTC U0122. Refer to  DTC U0100: Lost Communication with ECM / PCM "A"; DTC U0114: Lost Communication with Four-Wheel Drive Clutch Control Module; DTC U0122: Lost Communication with Vehicle Dynamics Control Module; DTC U0124: Lost Communication with Lateral Acceleration Sensor Module; DTC U0126: Lost Communication with Steering Angle Sensor Module; DTC U0140: Lost Communication with Body Control Module [08/2019 - ]  

Result: 

A 

See step  2

1. Check if DTC C1783 and a brake control system speed sensor malfunction DTC are output.

   Refer to DTC CHECK / CLEAR [08/2019 - ]

   Result

   Result	Proceed to
   DTCs are not output	A
   DTCs are output	B

Result: 

A 

REPLACE SUSPENSION CONTROL ECU. Refer to  REMOVAL [08/2015 - ] 

Result: 

B 

GO TO VEHICLE STABILITY CONTROL SYSTEM (DIAGNOSTIC TROUBLE CODE CHART). Refer to  DIAGNOSTIC TROUBLE CODE CHART [08/2019 - 08/2021]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [08/2021 - ]