DTC B2452: Abnormal Height Sensor Data at Initialization [12/2019 - 11/2023]: Procedure

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

   Refer to INITIALIZATION [12/2019 - 11/2023]

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  2

1. Clear the DTCs.

   Body Electrical > AFS > Clear DTCs 

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  3

1. Check for DTCs.

   Body Electrical > AFS > Trouble Codes 

   OK

   DTC B2452 is not output.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

END (INITIALIZATION WAS NOT COMPLETED) 

Result: 

NG 

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 [12/2019 - ] 

Result: 

OK 

See step  5

1. Remove the rear height control sensor sub-assembly LH.

   Refer to REMOVAL [12/2019 - 11/2023]

2. Inspect the rear height control sensor sub-assembly LH.

   Refer to INSPECTION [12/2019 - ]

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY LH. Refer to  REMOVAL [12/2019 - 11/2023] 

Result: 

OK 

See step  6

1. Disconnect the A15 headlight ECU sub-assembly LH connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   N6-3 (SHB) - A15-16 (SBR)	Always	Below 1 Ω
   N6-2 (SHRR) - A15-17 (SHRL)	Always	Below 1 Ω
   N6-1 (SHG) - A15-15 (SGR)	Always	Below 1 Ω
   N6-3 (SHB) or A15-16 (SBR) - Body ground	Always	10 kΩ or higher
   N6-2 (SHRR) or A15-17 (SHRL) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE HEADLIGHT ECU SUB-ASSEMBLY LH. Refer to  REMOVAL [12/2019 - 11/2023] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR