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 |
Note |
---|---|---|---|---|
B2456 |
Left Headlight ECU Variation Error |
Headlight ECU sub-assembly LH variation mismatch |
|
- |
CAUTION / NOTICE / HINT
NOTICE:
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PROCEDURE
1. |
CLEAR DTC |
(a) Clear the DTCs.
Click here
|
2. |
CHECK FOR DTC |
(a) Turn the ignition switch to ON.
(b) Turn on the headlights using the light control switch.
(c) Check for DTCs.
Click here
Result |
Proceed to |
---|---|
DTC B2456 output does not occur |
A |
DTC B2456 output occurs |
B |
A | ![]() |
USE SIMULATION METHOD TO CHECK
|
|
3. |
CHECK ECM |
(a) Check that the ECM part number matches the vehicle.
Result |
Proceed to |
---|---|
ECM part number matches vehicle |
A |
ECM part number does not match |
B |
B | ![]() |
REPLACE ECM |
|
4. |
CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) |
(a) Check that the main body ECU (multiplex network body ECU) part number matches the vehicle.
Result |
Proceed to |
---|---|
Main body ECU (multiplex network body ECU) part number matches vehicle |
A |
Main body ECU (multiplex network body ECU) part number does not match |
B |
A | ![]() |
REPLACE HEADLIGHT LIGHT CONTROL ECU SUB-ASSEMBLY LH |
B | ![]() |
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) |
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