DTC U0182-87: Lost Communication with Lighting Control Module Front Missing Message; DTC U0235-87: Lost Communication with Cruise Control Front Distance Range Sensor Signal Sensor or Center Missing Message; DTC U023A-87: Lost Communication with Image Processing Module "A" [12/2021 - ]: Procedure

1. Read each DTC and check the diagnosis pattern using the table below.

   Body Electrical > Front Recognition Camera (Front Lighting Control) > Trouble Codes 

   Body Electrical > Pre-Collision System > Trouble Codes 

   Chassis > Lane Control > Trouble Codes 

   Powertrain > Radar Cruise 2 > Trouble Codes 

   Body Electrical > Front Radar Sensor > Trouble Codes 

   Body Electrical > Headlight Control > Trouble Codes 

   Pattern	DTC output part name (Display on GTS)
   	Front Recognition Camera (Front Light Control)	Pre-Collision System	Lane Control	Radar Cruise 2	Front Radar Sensor	Headlight Control
   Pattern 1	U0182-87 U0235-87	U0235-87	U0235-87	U0235-87	U0104-87	U023A-87
   Pattern 2	U0235-87 U0182-87	U0235-87	U0235-87	U0235-87	-	-
   Pattern 3	U0235-87	U0235-87	U0235-87	U0235-87	U0104-87	-
   Pattern 4	U0235-87	U0235-87	U0235-87	U0235-87	-	-
   Pattern 5	U0182-87	-	-	-	-	U023A-87
   Pattern 6	-	-	-	-	-	U023A-87

   Result

   Result	Proceed to
   Pattern 1	A
   Pattern 2
   Pattern 3
   Pattern 4
   Pattern 5	B
   Pattern 6	C

Result: 

A 

GO TO PRE-COLLISION SYSTEM. Refer to  DTC U0235-87: Lost Communication with Cruise Control Front Distance Range Sensor Signal Sensor or Center Missing Message [12/2021 - ] 

Result: 

C 

REPLACE HEADLIGHT ECU SUB-ASSEMBLY LH. Refer to  REMOVAL [12/2021 - ] 

Result: 

B 

See step  2

Pre-procedure1

• Disconnect the B83 headlight cord LH connector.
• Disconnect the cable from the negative (-) battery terminal.

• Measure the resistance according to the value(s) in the table below.

  Standard Resistance

  Tester Connection	Condition	Specified Condition
  B83-11 (LCH) - B83-10 (LCL)	Cable disconnected from negative (-) battery terminal	54 to 69 Ω

  Result

  Proceed to
  OK
  NG

Post-procedure1

• None

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  3

Pre-procedure1

• Remove the headlight cord LH.

  Refer to DISASSEMBLY [12/2021 - ]

• Measure the resistance according to the value(s) in the table below.

  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

  *a	Component without harness connected (Headlight Cord LH)

  Standard Resistance

  Tester Connection	Condition	Specified Condition
  B83-10 (LCL) - A-21 (LCL)	Always	Below 1 Ω
  B83-11 (LCH) - A-22 (LCH)	Always	Below 1 Ω

  Result

  Proceed to
  OK
  NG

Post-procedure1

• None

Result: 

OK 

REPLACE HEADLIGHT ECU SUB-ASSEMBLY LH. Refer to  REMOVAL [12/2021 - ] 

Result: 

NG 

REPLACE HEADLIGHT CORD LH. Refer to  DISASSEMBLY [12/2021 - ]