DTC B2452: Abnormal Height Sensor Data at Initialization [11/2021 - 12/2023]: Procedure

1. Perform initialization of the headlight ECU sub-assembly LH.

   HINT: 

   Refer to REGISTRATION [11/2021 - 12/2023]

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  2

1. Clear the DTCs.

   for Mono Camera Type:

   Body Electrical > HL AutoLeveling > Clear DTCs 

   for Stereo Camera Type:

   Body Electrical > AFS > Clear DTCs 

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  3

1. Check for DTCs.

   for Mono Camera Type:

   Body Electrical > HL AutoLeveling > Trouble Codes 

   for Stereo Camera Type:

   Body Electrical > AFS > Trouble Codes 

   Result

   Result	Proceed to
   B2452 is not output	A
   B2452 is output	B

Result: 

A 

END (INITIALIZATION WAS NOT COMPLETED) 

Result: 

B 

See step  4

1. Check the installation condition of the rear height control sensor sub-assembly LH.

   OK

   Rear height control sensor sub-assembly LH is installed correctly.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

INSTALL PARTS CORRECTLY. Refer to  INSTALLATION [11/2020 - 12/2023] 

Result: 

OK 

See step  5

HINT: 

Refer to INSPECTION [11/2020 - ]

Result

Result: 

NG 

REPLACE REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY LH. Refer to  REMOVAL [11/2020 - 12/2023] 

Result: 

OK 

See step  6

Pre-procedure1

• Disconnect the W5 rear height control sensor sub-assembly LH connector.
• Disconnect the A96 headlight ECU sub-assembly LH connector.

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

  Standard Resistance

  Tester Connection	Condition	Specified Condition
  W5-3 (SHB) - A96-16 (SBR)	Always	Below 1 Ω
  W5-2 (SHRL) - A96-17 (SHRL)	Always	Below 1 Ω
  W5-1 (SHG) - A96-15 (SGR)	Always	Below 1 Ω
  W5-3 (SHB) or A96-16 (SBR) - Body ground	Always	10 kΩ or higher
  W5-2 (SHRL) or A96-17 (SHRL) - Body ground	Always	10 kΩ or higher

  Result

  Proceed to
  OK
  NG

Post-procedure1

• None

Result: 

OK 

REPLACE HEADLIGHT ECU SUB-ASSEMBLY LH. Refer to  REMOVAL [11/2021 - 12/2022]  , or refer to  REMOVAL [12/2022 - 12/2023] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR