DTC B2616

id0902i7856700

DTC B2616

Front auto leveling sensor signal system.

DETECTION CONDITION

Warning
• incorrect servicing of the auto leveling control module could result in electrical shock because the unit is integrated with the discharge headlight control module. Before servicing the auto leveling control module, always refer to "Discharge headlight service warnings." (See DISCHARGE HEADLIGHT SERVICE WARNINGS)
Output signal is not sent from the front auto leveling sensor.

POSSIBLE CAUS

• Front auto leveling sensor malfunction
• Open or short circuit in wiring harness between front auto leveling sensor and headlight (LH)
• Headlight (LH) malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION

1
INSPECT FRONT LEVELING SENSOR CONNECTION
• Check installation condition of front auto leveling sensor and fit of connector.
• Are installation condition and fit okay?
Yes
Go to next step.
No
After correcting fit, clear DTC and check DTC again.
• If DTC is displayed again, go to next step.
2
INSPECT WIRING HARNESS BETWEEN FRONT AUTO LEVELING SENSOR CONNECTOR AND HEADLIGHT (LH) CONNECTOR
• Disconnect front auto leveling sensor connector (6-pin) and headlight (LH) connector (4-pin).
• Is there continuity between the following connectors?
- Front auto leveling sensor connector (terminal B) and headlight (LH) connector (terminal 2C)
Yes
Go to next step.
No
Repair or replace wiring harness between front auto leveling sensor and headlight (LH).
3
INSPECT WIRING HARNESS BETWEEN FRONT AUTO LEVELING SENSOR CONNECTOR AND HEADLIGHT (LH) CONNECTOR
• Disconnect front auto leveling sensor connector (6-pin) and headlight (LH) connector (4-pin).
• Is there no continuity between the following connectors?
- Front auto leveling sensor connector (terminal B) and headlight (LH) connector (terminal 2B)
- Front auto leveling sensor connector (terminal B) and headlight (LH) connector (terminal 2A)
Yes
Go to next step.
No
Repair or replace wiring harness between front auto leveling sensor and headlight (LH).
4
INSPECT HEADLIGHT (LH)
• Disconnect auto leveling control module (main) connector (20-pin) and headlight (LH) connector (4-pin).
• Is there continuity between the following connectors?
- Auto leveling control module (main) connector (terminal H) and headlight (LH) connector (terminal 2C)
Yes
Go to next step.
No
Possible cause is an open circuit in headlight (LH). Replace headlight (LH). (See FRONT COMBINATION LIGHT REMOVAL/INSTALLATION)
5
INSPECT HEADLIGHT (LH)
• Disconnect auto leveling control module (main) connector (20-pin) and headlight (LH) connector (4-pin).
• Is there no continuity between the following connectors?
- Auto leveling control module (main) connector (terminal G) and headlight (LH) connector (terminal 2C)
- Auto leveling control module (main) connector (terminal K) and headlight (LH) connector (terminal 2C)
- Auto leveling control module (main) connector (terminal E) and headlight (LH) connector (terminal 2C)
Yes
Replace front auto leveling sensor.
No
Possible cause is an open circuit in headlight (LH). Replace headlight (LH). (See FRONT COMBINATION LIGHT REMOVAL/INSTALLATION)