Lexus NX: Left Headlight ECU Variation Error (B2456)
DESCRIPTION
This DTC is output when a headlight ECU sub-assembly LH that is incompatible with the vehicle is installed.
The headlight ECU sub-assembly LH outputs DTC B2456.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| B2456 | Left Headlight ECU Variation Error | Headlight ECU sub-assembly LH variation mismatch |
|
PROCEDURE
| 1. | CHECK FOR DTC |
(a) Clear the DTCs.
Click here .gif)
(b) Turn the power switch on (IG).
(c) Check for DTCs.
Click here
OK:
DTC B2456 output does not occur.
| OK | .gif) | USE SIMULATION METHOD TO CHECK |
|
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| 2. | CHECK HYBRID VEHICLE CONTROL ECU |
(a) Check that the hybrid vehicle control ECU part number matches the vehicle.
| Result | Proceed to |
|---|---|
| Hybrid vehicle control ECU part number matches vehicle | A |
| Hybrid vehicle control ECU part number does not match | B |
| A | | REPLACE HEADLIGHT ECU SUB-ASSEMBLY LH |
| B | | REPLACE HYBRID VEHICLE CONTROL ECU |
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Reassembly
REASSEMBLY CAUTION / NOTICE / HINT HINT:
Use the same procedure for the RH and LH side.
The procedure listed below is for the LH side.
A bolt without a torque specification is shown in the standard bolt chart.
Click here PROCEDURE 1. REPAIR INSTRUCTION Click here 2. INSTALL NO. 1 BLACK
Components
COMPONENTS ILLUSTRATION *1 FRONT FLOOR COVER CENTER LH *2 NO. 1 ENGINE UNDER COVER *3 REAR ENGINE UNDER COVER LH *4 REAR ENGINE UNDER COVER RH ILLUSTRATION *1 FRONT STABILIZER LINK ASSEMBLY LH *2 FRONT STABILIZER LINK ASSEMBLY RH *3 FRONT SUSPENSION MEMBER REAR
