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.
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|
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.
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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) |
Toyota CH-R Service Manual > Pre-collision System: Vehicle Information Not Obtained (C1A02)
DESCRIPTION
When a new millimeter wave radar sensor assembly is installed, it receives vehicle
specification information (destination) from the main body ECU (multiplex network
body ECU) and stores the information.
DTC C1A02 is stored when the millimeter wave radar sensor assembly cannot store ...
Toyota CH-R Service Manual > Audio And Visual System(for Radio And Display Type): Cellular Phone Registration Failure
CAUTION / NOTICE / HINT
NOTICE:
Depending on the parts that are replaced during vehicle inspection or
maintenance, performing initialization, registration or calibration may
be needed. Refer to Precaution for Audio and Visual System.
Click here
When replacing the ...