T–158
ON-BOARD DIAGNOSTIC [HEADLIGHT AUTO LEVELING SYSTEM]
End Of Sie
DTC B2626, B2477
A6E816467000W10
Diagnostic procedure
End Of Sie
3
INSPECT WIRING HARNESS BETWEEN
REAR AUTO LEVELING SENSOR
CONNECTOR AND HEADLIGHT (LH)
CONNECTOR
• Disconnect rear auto leveling sensor
connector (6-pin) and headlight (LH)
connector (4-pin).
• Is there no continuity between the following
connectors?
— Rear auto leveling sensor connector
(terminal B) and headlight (LH) connector
(terminal 2B)
— Rear auto leveling sensor connector
(terminal B) and headlight (LH) connector
(terminal 2A)
Yes Go to next step.
No Repair or replace wiring harness between rear auto leveling
sensor and headlight (LH).
4
INSPECT HEADLIGHT (LH)
• Disconnect auto leveling control unit (main)
connector (20-pin) and headlight (LH)
connector (4-pin).
• Is there continuity between the following
connectors?
— Auto leveling control unit (main) connector
(terminal F) and headlight (LH) connector
(terminal 2D)
Yes Go to next step.
No Possible cause is an open circuit in headlight (LH). Replace
headlight (LH). (See T–26 FRONT COMBINATION LIGHT
REMOVAL/INSTALLATION)
5
INSPECT HEADLIGHT (LH)
• Disconnect auto leveling control unit (main)
connector (20-pin) and headlight (LH)
connector (4-pin).
• Is there continuity between the following
connectors?
— Auto leveling control unit (main) connector
(terminal G) and headlight (LH) connector
(terminal 2D)
— Auto leveling control unit (main) connector
(terminal K) and headlight (LH) connector
(terminal 2D)
— Auto leveling control unit (main) connector
(terminal E) and headlight (LH) connector
(terminal 2D)
Yes Replace rear auto leveling sensor.
(See T–32 REAR AUTO LEVELING SENSOR REMOVAL/
INSTALLATION)
No Possible cause is an open circuit in headlight (LH). Replace
headlight (LH). (See T–26 FRONT COMBINATION LIGHT
REMOVAL/INSTALLATION)
STEP INSPECTION ACTION
DTC B2626,
B2477
Headlight zeroset system for auto leveling control unit.
DETECTION
CONDITION
Warning
• incorrect servicing of the auto leveling control unit could result in electrical shock because
the unit is integrated with the discharge headlight control unit. Before servicing the auto
leveling control unit, always refer to “Discharge headlight service warnings.” (See T–25
DISCHARGE HEADLIGHT SERVICE WARNINGS)
Headlight zeroset for auto leveling control unit is not set.
POSSIBLE
CAUSE
• Headlight zeroset for auto leveling control unit is not set or the setting is invalid
ACTION
Check connections of each sensor and the unit. Then connect WDS or equivalent and perform headlight zeroset.
(See T–31 HEADLIGHT ZEROSET)
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