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
(a) Clear the DTCs.
Click here
Body Electrical > AFS > Clear DTCs
(b) Turn the power switch on (IG).
(c) Check for DTCs.
Click here
Body Electrical > AFS > Trouble Codes
Result | Proceed to |
DTCs B242C and B242D are not output | A |
DTC B242C is output | B |
DTC B242D is output | C |
B | | REPLACE HEADLIGHT ECU SUB-ASSEMBLY RH |
C | | REPLACE HEADLIGHT ECU SUB-ASSEMBLY LH |
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SEE MORE:
PROCEDURE 1. CHECK CONDITION (a) Check with the customer if the vehicle has been turned by a turntable. OK: Vehicle has not been turned by a turntable. HINT: If the vehicle is turned on a turntable with the power switch on (IG), the system may store the angular velocity. As a result, th
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The c
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