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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System Diagram
SYSTEM DIAGRAM
Internal Control Module Throttle Position Performance (P060E)
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