Toyota Corolla Cross: Headlight Control Module (Sub) System Internal Failure (B242C04,B242D04)
DESCRIPTION
The headlight ECU sub-assembly LH or headlight ECU sub-assembly RH stores a DTC if it detects an internal malfunction.
|
DTC No. | Detection Item |
DTC Detection Condition | Trouble Area |
|---|---|---|---|
|
B242C04 | Headlight Control Module (Sub) System Internal Failure | Detection condition:
| Headlight ECU sub-assembly RH |
|
B242D04 | Headlight Control Module (Main) System Internal Failure | Detection condition:
| Headlight ECU sub-assembly LH |
CAUTION / NOTICE / HINT
NOTICE:
If the headlight ECU sub-assembly LH has been replaced, it is necessary to synchronize the vehicle information and initialize the headlight ECU sub-assembly LH.
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PROCEDURE
| 1. |
CLEAR DTC |
(a) Clear the DTCs.
Body Electrical > Headlight Control > Clear DTCs Body Electrical > Headlight Control (Sub) > Clear DTCs
|
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| 2. |
CHECK FOR DTC |
(a) Turn the ignition switch to ON.
(b) Wait at least 15 minutes.
(c) Check for DTCs.
Body Electrical > Headlight Control > Trouble Codes Body Electrical > Headlight Control (Sub) > Trouble CodesOK:
DTC B242C04 and B242D04 are not output.
|
Result | Proceed to |
|---|---|
|
DTCs are not output | A |
|
B242C04 is output | B |
|
B242D04 is output | C |
| A |
.gif) | USE SIMULATION METHOD TO CHECK |
| B |
| REPLACE HEADLIGHT ECU SUB-ASSEMBLY RH |
| C |
| REPLACE HEADLIGHT ECU SUB-ASSEMBLY LH |
