DTC C1B21-49: MCU Internal Electronic Failure; DTC C1B25-46: Flash Memory Calibration/Parameter Memory Failure [10/2023 - ]: Procedure

Pre-procedure1

1. None

   Procedure1

2. In accordance with the display on the GTS, clear the DTCs.

   Chassis > DRS > Clear DTCs 

   Result

   Proceed to
   NEXT

   Post-procedure1

3. Turn the ignition switch off and wait for 30 seconds or more.

Result: 

NEXT 

See step  2

1. In accordance with the display on the GTS, check for DTCs.

   Chassis > DRS > Trouble Codes 

   Result

   Result	Proceed to
   DTCs are not output	A
   C1B21-49 or C1B25-46 is output	B

Result: 

B 

REPLACE REAR STEERING LINK ASSEMBLY. Refer to  REMOVAL [10/2023 - ] 

Result: 

A 

See step  3

Pre-procedure1

1. Using Utility, forcibly drive the motor.

   Chassis > DRS > Utility 

   Tester Display
   Rear Steering Motor Drive

   Procedure1

2. In accordance with the display on the GTS, check for DTCs.

   Chassis > DRS > Trouble Codes 

   Result

   Result	Proceed to
   DTCs are not output	A
   C1B21-49 or C1B25-46 is output	B

   Post-procedure1

3. None

Result: 

A 

END 

Result: 

B 

REPLACE REAR STEERING LINK ASSEMBLY. Refer to  REMOVAL [10/2023 - ]