DTC C1345-51: Linear Solenoid Valve Offset Learning Not Programmed; DTC C1345-54: Linear Solenoid Valve Offset Learning Missing Calibration [12/2019 - ]: Procedure

1. Check that no DTCs other than those related to incomplete learning are output.

   Chassis > Brake Booster > Trouble Codes 

   Chassis > Brake/EPB > Trouble Codes 

   OK

   DTCs other than those related to incomplete learning are not output.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR CIRCUITS INDICATED BY OUTPUT DTCS. Refer to  DIAGNOSTIC TROUBLE CODE CHART [12/2019 - 10/2021]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [10/2021 - 11/2023]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [11/2023 - ] 

Result: 

OK 

See step  2

1. Perform the air bleeding procedure in Bleed Brake System.

   Refer to BLEEDING [12/2019 - ]

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  3

1. Check and ensure the following conditions required for performing linear solenoid valve offset learning and then perform linear solenoid valve offset learning.

   Refer to UTILITY [12/2019 - 11/2023] , or refer to UTILITY [11/2023 - ]

   NOTE:

   If DTC C1345-54 is output, wait 4 minutes or more with the ignition switch turned off, then perform learning after turning the ignition switch to ON and clearing the DTCs.

   Chassis > Brake/EPB > Utility 

   Tester Display
   Calibration

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  4

1. Clear the DTCs.

   Chassis > Brake Booster > Clear DTCs 

2. Turn the ignition switch off.

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  5

1. Based on the Freeze Frame Data and interview with the customer, attempt to reproduce the conditions when the malfunction occurred.
2. Check if the same DTC is output.

   Chassis > Brake Booster > Trouble Codes 

   Result

   Result	Proceed to
   DTCs C1345-51 and C1345-54 are not output.	A
   DTCs C1345-51 and/or C1345-54 are output.	B

Result: 

A 

END 

Result: 

B 

REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY. Refer to  REMOVAL [12/2019 - 10/2022]  , or refer to  REMOVAL [10/2022 - 11/2023]  , or refer to  REMOVAL [11/2023 - ]