| Last Modified: 01-30-2024 | 6.11:8.1.0 | Doc ID: RM100000001G2C1 |
| Model Year Start: 2019 | Model: RAV4 | Prod Date Range: [11/2018 - 12/2021] |
| Title: LIGHTING (EXT): LIGHTING SYSTEM (w/ Headlight ECU without AFS): B2452; Abnormal Height Sensor Data at Initialization; 2019 - 2021 MY RAV4 RAV4 HV [11/2018 - 12/2021] | ||
|
DTC |
B2452 |
Abnormal Height Sensor Data at Initialization |
DESCRIPTION
The headlight ECU sub-assembly LH stores this DTC if the value from the rear height control sensor sub-assembly LH is out of range when performing initialization of the headlight ECU sub-assembly LH, such as when the vehicle is not level or jacked up.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
DTC Output from |
Note |
|---|---|---|---|---|---|
|
B2452 |
Abnormal Height Sensor Data at Initialization |
Detection condition:
Malfunction status:
Malfunction duration:
|
|
HL AutoLeveling |
- |
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
-
If the headlight ECU sub-assembly LH has been replaced, it is necessary to synchronize the vehicle information and initialize the headlight ECU sub-assembly LH.
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![2019 - 2021 MY RAV4 RAV4 HV [11/2018 - 12/2021]; LIGHTING (EXT): LIGHTING SYSTEM (w/ Headlight ECU without AFS): INITIALIZATION](/t3Portal/stylegraphics/info.gif)
-
If any of the following are performed, it is necessary to initialize the headlight ECU sub-assembly LH.
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- Replacement of the rear height control sensor sub-assembly LH
- Removal/installation of the rear height control sensor sub-assembly LH
- Work that changes the vehicle height such as replacement of suspension components
PROCEDURE
|
1. |
INITIALIZATION HEADLIGHT ECU SUB-ASSEMBLY LH |
(a) Perform initialization of the headlight ECU sub-assembly LH.
Click here
|
|
2. |
CLEAR DTC |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / HL AutoLeveling / Clear DTCs.
(e) Clear the DTCs.
Body Electrical > HL AutoLeveling > Clear DTCs
|
|
3. |
CHECK FOR DTC |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / HL AutoLeveling / Trouble Codes.
(e) Check for DTCs.
Body Electrical > HL AutoLeveling > Trouble Codes
OK:
DTC B2452 is not output.
| OK |
|
END (INITIALIZATION WAS NOT COMPLETED) |
|
|
4. |
CHECK REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY LH |
(a) Check the installation condition of the rear height control sensor sub-assembly LH.
OK:
Rear height control sensor sub-assembly LH is installed correctly.
| NG |
|
INSTALL PARTS CORRECTLY
|
|
|
5. |
INSPECT REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY LH |
(a) Remove the rear height control sensor sub-assembly LH.
Click here
(b) Inspect the rear height control sensor sub-assembly LH.
Click here
| NG |
|
REPLACE REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY LH
|
|
|
6. |
CHECK HARNESS AND CONNECTOR (REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY LH - HEADLIGHT ECU SUB-ASSEMBLY LH) |
(a) Disconnect the O3 rear height control sensor sub-assembly LH connector.
(b) Disconnect the A11 headlight ECU sub-assembly LH connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
O3-3 (SHB) - A11-16 (SBR) |
Always |
Below 1 Ω |
|
O3-2 (SHRR) - A11-17 (SHRL) |
Always |
Below 1 Ω |
|
O3-1 (SHG) - A11-15 (SGR) |
Always |
Below 1 Ω |
|
O3-3 (SHB) or A11-16 (SBR) - Body ground |
Always |
10 kΩ or higher |
|
O3-2 (SHRR) or A11-17 (SHRL) - Body ground |
Always |
10 kΩ or higher |
| OK |
|
REPLACE HEADLIGHT ECU SUB-ASSEMBLY LH
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|