DTC B2452: Height Control Sensor Data Out of Range When Initializing [09/2019 - ]: Procedure

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

   Refer to INITIALIZATION [09/2019 - ]

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  2

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Body Electrical / AFS / Clear DTCs.
5. Clear the DTCs.

   Body Electrical > AFS > Clear DTCs 

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  3

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Body Electrical / AFS / Trouble Codes.
5. 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 [10/2017 - ] 

Result: 

OK 

See step  5

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

   Refer to REMOVAL [10/2017 - ]

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

   Refer to INSPECTION [10/2017 - ]

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY LH. Refer to  REMOVAL [10/2017 - ] 

Result: 

OK 

See step  6

1. Disconnect the O2 rear height control sensor sub-assembly LH connector.
2. Disconnect the A16*1 or A95*2 headlight ECU sub-assembly LH connector.
   1. *1: for TMMT Made
   2. *2: for TMC Made
3. Measure the resistance according to the value(s) in the chart below.
   1. for TMMT Made

      Standard Resistance

      Tester Connection	Condition	Specified Condition
      O2-3 (SHB) - A95-16 (SBR)	Always	Below 1 Ω
      O2-2 (SHRR) - A95-17 (SHRL)	Always	Below 1 Ω
      O2-1 (SHG) - A95-15 (SGR)	Always	Below 1 Ω
      O2-3 (SHB) or A95-16 (SBR) - Body ground	Always	10 kΩ or higher
      O2-2 (SHRR) or A95-17 (SHRL) - Body ground	Always	10 kΩ or higher

   2. for TMC Made

      Standard Resistance

      Tester Connection	Condition	Specified Condition
      O2-3 (SHB) - A16-16 (SBR)	Always	Below 1 Ω
      O2-2 (SHRR) - A16-17 (SHRL)	Always	Below 1 Ω
      O2-1 (SHG) - A16-15 (SGR)	Always	Below 1 Ω
      O2-3 (SHB) or A16-16 (SBR) - Body ground	Always	10 kΩ or higher
      O2-2 (SHRR) or A16-17 (SHRL) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE HEADLIGHT ECU SUB-ASSEMBLY LH. Refer to  REMOVAL [09/2019 - 08/2020]  , or refer to  REMOVAL [08/2020 - ] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR