DESCRIPTION
The No. 1 headlight ECU sub-assembly LH stores this DTC if the value from the rear height control sensor sub-assembly RH is out of range when performing initialization of the No. 1 headlight ECU sub-assembly LH, such as when the vehicle is not level or jacked up.
for Multiple Beam Headlight DTC No. | Detection Item | DTC Detection Condition | Trouble Area | DTC Output from |
---|---|---|---|---|
B2452 | Abnormal Height Sensor Data at Initialization |
|
| AFS |
DTC No. | Detection Item | DTC Detection Condition | Trouble Area | DTC Output from |
---|---|---|---|---|
B2452 | Abnormal Height Sensor Data at Initialization |
|
| HL AutoLeveling |
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Click here
Click here
Click here
PROCEDURE
1. | INITIALIZATION NO. 1 HEADLIGHT ECU SUB-ASSEMBLY LH |
(a) Perform initialization of the No. 1 headlight ECU sub-assembly LH.
Click here
|
2. | CONFIRM MODEL |
(a) Choose the model to be inspected.
Result | Proceed to |
---|---|
for Multiple Beam Headlight | A |
for Single Beam Headlight | B |
B | ![]() | GO TO STEP 5 |
|
3. | CLEAR DTC |
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / AFS / Trouble Codes.
(e) Clear the DTCs.
Body Electrical > AFS > Clear DTCs
|
4. | CHECK FOR DTC |
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / AFS / Trouble Codes.
(e) Check for DTCs.
Body Electrical > AFS > Trouble CodesOK:
DTC B2452 is not output.
OK | ![]() | END (INITIALIZATION WAS NOT COMPLETED) |
NG | ![]() | GO TO STEP 7 |
5. | CLEAR DTC |
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / HL AutoLeveling / Trouble Codes.
(e) Clear the DTCs.
Body Electrical > HL AutoLeveling > Clear DTCs
|
6. | CHECK FOR DTC |
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(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 CodesOK:
DTC B2452 is not output.
OK | ![]() | END (INITIALIZATION WAS NOT COMPLETED) |
|
7. | CHECK REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY RH |
(a) Check the installation condition of the rear height control sensor sub-assembly RH.
OK:
Rear height control sensor sub-assembly RH is installed correctly.
NG | ![]() | INSTALL PARTS CORRECTLY |
|
8. | INSPECT REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY RH |
(a) Remove the rear height control sensor sub-assembly RH.
Click here
(b) Inspect the rear height control sensor sub-assembly RH.
Click here
NG | ![]() | REPLACE REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY RH |
|
9. | CHECK HARNESS AND CONNECTOR (REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY RH - NO. 1 HEADLIGHT ECU SUB-ASSEMBLY LH) |
(a) Disconnect the A49 No. 1 headlight ECU sub-assembly LH connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection | Condition | Specified Condition |
---|---|---|
T3-3 (SHB) - A49-16 (SBR) | Always | Below 1 Ω |
T3-2 (SHRR) - A49-17 (SHRL) | Always | Below 1 Ω |
T3-1 (SHG) - A49-15 (SGR) | Always | Below 1 Ω |
T3-3 (SHB) or A49-16 (SBR) - Body ground | Always | 10 kΩ or higher |
T3-2 (SHRR) or A49-17 (SHRL) - Body ground | Always | 10 kΩ or higher |
OK | ![]() | REPLACE NO. 1 HEADLIGHT ECU SUB-ASSEMBLY LH |
NG | ![]() | REPAIR OR REPLACE HARNESS OR CONNECTOR |
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Electric Parking Brake System: Right Electric Parking Brake Actuator Control Circuit Short to Ground or Open (C061014)
DESCRIPTION DTC No. Detection Item DTC Detection Condition Trouble Area Memory Note C061014 Right Electric Parking Brake Actuator Control Circuit Short to Ground or Open
Diagnosis Condition:
Engine switch on (IG)
Malfunction Status:
When the ECU power supply is normal, a ma ...
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Automatic Transaxle Assembly: Installation
INSTALLATION PROCEDURE 1. INSTALL TORQUE CONVERTER ASSEMBLY (a) Turn the front oil pump drive gear so that either key is at the top and place a matchmark on the transaxle housing to indicate the position of the key. *a Matchmark *b Key (b) Place a matchmark on the ...