DTC U023A-87: Lost Communication with Image Processing Module "A" Missing Message [11/2021 - ]: Procedure

1. Check for DTCs and check the pattern by referring to the table below.

   Body Electrical > Spatial Information Service > Trouble Codes 

   Body Electrical > Driving Support Computer > Trouble Codes 

   Body Electrical > Pre-Collision System > Trouble Codes 

   Chassis > Advanced Drive Control > Trouble Codes 

   Pattern	Display on Techstream / Output DTC
   	Spatial Information Service	Driving Support Computer	Pre-Collision System	Advanced Drive Control
   Pattern 1	U023A-87	U023A-87	U023A-87	U023A-87 U053B-81
   Pattern 2	U023A-87	-	-	-

   Result

   Result	Proceed to
   Pattern 1	A
   Pattern 2	B

Result: 

A 

GO TO PRE-COLLISION SYSTEM. Refer to  DTC U023A-87: Lost Communication with Image Processing Module "A" Missing Message [11/2021 - 10/2022]  , or refer to  DTC U023A-87: Lost Communication with Image Processing Module "A" Missing Message [10/2022 - 10/2023]  , or refer to  DTC U023A-87: Lost Communication with Image Processing Module "A" Missing Message [10/2023 - ] 

Result: 

B 

See step  2

1. Disconnect the cable from the negative (-) auxiliary battery terminal.
2. Disconnect the L203 spatial information service ECU assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   L203-10 (CA1H) - L203-11 (CA1L)	Cable disconnected from negative (-) auxiliary battery terminal	54 to 69Ω

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE SPATIAL INFORMATION SERVICE ECU ASSEMBLY. Refer to  REMOVAL [11/2021 - ] 

Result: 

NG 

REPAIR OR REPLACE LOCAL BUS BRANCH LINE OR CONNECTOR