Lexus NX: Right Headlight ECU Malfunction (B242C,B242D)
DESCRIPTION
These DTCs are output when an internal malfunction in the headlight ECU sub-assembly occurs.
The headlight ECU sub-assembly LH outputs DTC B242C and B242D.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| B242C | Right Headlight ECU Malfunction | Headlight ECU sub-assembly RH malfunction | Headlight ECU sub-assembly RH |
| B242D | Left Headlight ECU Malfunction | Headlight ECU sub-assembly LH malfunction | Headlight ECU sub-assembly LH |
CAUTION / NOTICE / HINT
NOTICE:
After the headlight ECU sub-assembly LH is replaced, vehicle information registration and initialization are necessary.
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PROCEDURE
| 1. | CHECK FOR DTC |
(a) Clear the DTCs.
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(b) Turn the power switch on (IG).
(c) Check for DTCs.
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| Result | Proceed to |
|---|---|
| DTCs B242C and B242D are not output | A |
| DTC B242C is output | B |
| DTC B242D is output | C |
| A | .gif) | USE SIMULATION METHOD TO CHECK |
| B | | REPLACE HEADLIGHT ECU SUB-ASSEMBLY RH |
| C | | REPLACE HEADLIGHT ECU SUB-ASSEMBLY LH |
READ NEXT:
Open in IG Circuit (B242E)
DESCRIPTION This DTC is output when there is a problem in the power supply for the headlight ECU sub-assembly RH. The headlight ECU sub-assembly LH outputs DTC B242E. DTC No. Detection Item DTC
Headlamp LH Circuit (B2439,B243A)
DESCRIPTION This DTC is output when the headlight ECU sub-assembly receives an abnormal signal from the headlight unit. The headlight ECU sub-assembly LH outputs DTC B2439 and B243A DTC No. Detec
Left Low Beam Fan Malfunction (B243D,B243E)
DESCRIPTION This DTC is output when the low beam fan is malfunctioning and the low beam illumination is dark. The headlight ECU sub-assembly LH outputs DTC B243D and B243E DTC No. Detection Item
SEE MORE:
Freeze Frame Data
FREEZE FRAME DATA FREEZE FRAME DATA NOTICE:
Freeze frame data values will vary depending on the measurement conditions, surroundings, or vehicle conditions. For this reason, there may be a problem even when the values are within specifications.
Turn the power switch on (IG) and park the vehicle
Precaution
PRECAUTION POWER FOLDING SEAT FUNCTION HANDLING PRECAUTIONS NOTICE:
When operating the rear power seat, make sure nothing is in the path of movement.
When operating the rear power seat, do not allow body parts or foreign objects to interfere with the seat or other components as injuries or dama
