DTC C1581: Assist Map Number Un-Writing [08/2013 - 08/2016]: Procedure

1. Perform assist map writing.

   Refer to CALIBRATION [08/2013 - ]

   Chassis > EMPS > Utility 

   Tester Display
   Signal Check

2. Check for DTCs.

   Refer to DTC CHECK / CLEAR [08/2013 - 08/2016]

   Chassis > EMPS > Trouble Codes 

   Result

   Result	Proceed to
   DTC C1581 is output.	A
   DTC C1581 is not output.	B

   NOTE:

   DTC C1581 is cleared after the assist map is written.

Result:  2

B 

END 

Result:  1

A 

See step  2

1. Check for DTCs.

   Refer to DIAGNOSIS SYSTEM [08/2013 - 04/2014] Refer to DIAGNOSIS SYSTEM [04/2014 - 08/2015] Refer to DIAGNOSIS SYSTEM [08/2015 - 08/2016]

   Result

   Result	Proceed to
   CAN communication system DTCs are not output.	A
   CAN communication system DTCs are output.	B

Result:  2

B 

GO TO CAN COMMUNICATION SYSTEM:  HOW TO PROCEED WITH TROUBLESHOOTING [08/2013 - ] 

Result:  1

A 

See step  3

1. Confirm if the related part has the correct part number.

   Related Part

   Skid control ECU (Brake actuator assembly)

   NOTE:

   When removing the related part to check it, be sure to follow the appropriate procedures and precautions.

   • Skid control ECU (Brake actuator assembly)

   Result

   Result	Proceed to
   The related part has the correct part number.	A
   The related part has the incorrect part number.	B

Result:  2

B 

See step  5

Result:  1

A 

See step  4

1. Select Health Check on the Techstream screen and check if system DTCs of the related part are output.

   HINT: 

   If system DTCs of the related part are stored, assist map writing to the power steering ECU assembly may not be performed properly.

   Result

   Result	Proceed to
   System DTCs of the related part are output.	A
   System DTCs of the related part are not output.	B

Result:  1

A 

REPAIR CIRCUIT INDICATED BY OUTPUT CODE 

Result:  2

B 

REPLACE POWER STEERING ECU ASSEMBLY. Refer to  REMOVAL [08/2013 - ] 

1. Replace the related part with one that has the correct part number.
   • Skid control ECU (Brake actuator assembly)

   Result

   Proceed to
   NEXT

Result:  1

NEXT 

See step  6

1. Check for DTCs.

   Refer to DTC CHECK / CLEAR [08/2013 - 08/2016]

   Chassis > EMPS > Trouble Codes 

   Result

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

Result:  1

A 

END 

Result:  2

B 

REPLACE POWER STEERING ECU ASSEMBLY. Refer to  REMOVAL [08/2013 - ]