DESCRIPTION
The DTC is stored when the main body ECU (driver side junction block assembly) detects malfunctions in the automatic high beam system.
DTC No. |
DTC Detection Condition |
Trouble Area |
---|---|---|
B124B |
Malfunction in automatic high beam system |
|
CAUTION / NOTICE / HINT
NOTICE:
First perform the communication function inspections in How to Proceed with Troubleshooting to confirm that there are no CAN communication malfunctions before troubleshooting this symptom.
PROCEDURE
1. |
CHECK FOR DTC |
(a) Clear the DTCs (See page ).
(b) Check for DTCs (See page ).
OK:
DTC B124B is not output.
OK | ![]() |
USE SIMULATION METHOD TO CHECK |
|
2. |
CHECK FOR DTC |
(a) Check for DTCs (See page ).
Result |
Proceed to |
---|---|
DTC B2414 is output |
A |
DTC B2415 is output |
B |
DTC U0126, DTC U0129 or DTC U0101 is output |
C |
Other DTC is not output |
D |
A | ![]() |
GO TO DTC CHART |
B | ![]() |
GO TO DTC CHART |
C | ![]() |
GO TO DTC CHART |
D | ![]() |
REPLACE INNER REAR VIEW MIRROR ASSEMBLY |
Components
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Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART
HINT:
Parameters listed in the chart may not be exactly the same as your readings due
to the type of instrument or other factors. If a trouble code is displayed during
the DTC check, inspect the trouble areas listed for that ...
Detection range of the sensors
1. Approximately 1.6 ft. (50 cm)
2. Approximately 4.9 ft. (150 cm)
3. Approximately 2.0 ft. (60 cm)
The diagram shows the detection range of the sensors. Note that the sensors cannot
detect obstacles that are extremely close to the vehicle.
The range o ...