DTC B291A: Auto Headlamp Leveling Sensor Range/Performance
DTC detecting condition:
Detected when internal malfunction occurs in the auto headlight beam leveler control module.
Trouble symptom:
The auto headlight beam leveler does not operate.
Failure detection pattern:
- "Primary" (high-priority diagnosis)
Warning light/indicator light:
- Auto headlight beam leveler warning light
- SRH warning light
- ADB warning light
- LED open circuit detection signal -
CAUTION:
Initialization is required after replacing the auto headlight beam leveler control module. Ref. to LIGHTING SYSTEM>AUTO HEADLIGHT BEAM LEVELER SYSTEM>OPERATION
.
NOTE:
For the diagnostic procedure, refer to DTC B2900. Ref. to HEADLIGHT/FOGLIGHT (DIAGNOSTICS)>DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)>DTC B2900 AHL CONTROL .