DTC U1303-57: Software Incompatibility with Stop and Start Control Module Invalid / Incompatible Software Component [12/2024 - ]: Procedure

1. Check for DTCs.

   Chassis > Adaptive Variable Suspension System > Trouble Codes 

   Result

   Result	Proceed to
   CAN communication malfunction DTC are not output	A
   CAN communication DTC is output	B

Result: 

B 

REFER TO " CAN COMMUNICATION SYSTEM (HEV) - DIAGNOSTICS - INTRODUCTION  " 

Result: 

A 

See step  2

1. If a DTC is output due to replacement of a part sending vehicle identification information, check if a part with the correct part number is installed.

   Part Sending Vehicle Identification Information

   Engine stop and start ECU

   NOTE:

   When removing parts to check parts sending vehicle identification information, be sure to follow the respective removal and installation procedures and precautions.

   Refer to REMOVAL [12/2024 - ]

   Result

   Result	Proceed to
   Part with incorrect part number is installed	A
   Part with correct part number is installed, or part has not been replaced	B

Result: 

A 

REPLACE RELEVANT PART WITH PART THAT HAS CORRECT PART NUMBER 

Result: 

B 

See step  3

HINT: 

Refer to INITIALIZATION [12/2024 - ]

Result

Result: 

NEXT 

See step  4

1. Check for DTCs.

   Chassis > Adaptive Variable Suspension System > Trouble Codes 

   Result

   Result	Proceed to
   U1303-57 is output	A
   U1303-57 is not output	B

Result: 

A 

REPLACE ABSORBER CONTROL ECU 

Refer to REMOVAL [12/2024 - ]

Result: 

B 

END