DTC B2607

id0902i7855400

DTC B2607

Auto leveling control unit controlling system.

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 DISCHARGE HEADLIGHT SERVICE WARNINGS)
Operation of auto leveling control unit (main) and auto leveling control unit (sub) are reversed.

POSSIBLE CAUSE

• Mounting of auto leveling control unit (main) and auto leveling control unit (sub) changed
• Poor fit of auto leveling control unit
• Headlight malfunction
• Open or short circuit in wiring harness between auto leveling sensors and headlight (LH)

Remark :
In this case other DTCs can be reported for wrong side.

Diagnostic procedure for headlight (LH)

STEP

INSPECTION

ACTION

1
INSPECT CONNECTION
• Check fit of auto leveling control unit and fit of connectors.
• Is 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 AUTO LEVELING SENSOR CONNECTORS AND HEADLIGHT (LH) CONNECTOR
• Disconnect front and rear auto leveling sensor connector (6-pin) and headlight (LH) connector (4-pin).
• Is there no continuity between the following connectors?.
- Headlight (LH) connector (terminal 2C) and front auto leveling sensor connector (terminal A)
- Headlight (LH) connector (terminal 2D) and rear auto leveling sensor connector (terminal D)
Yes
Go to next step.
No
Repair or replace wiring harness between auto leveling sensors and headlight (LH).
3
INSPECT HEADLIGHT (LH)
• Disconnect auto leveling control unit (main) connector (20-pin) and headlight (LH) connector (4-pin).
• Is there no continuity between the following connectors?.
- Headlight (LH) connector (terminal 2B) and auto leveling control unit (main) connector (terminal H)
- Headlight (LH) connector (terminal 2A) and auto leveling control unit (main) connector (terminal F)
Yes
Clear DTC and check DTC again.
• If DTC is displayed again, replace auto leveling control unit. (See DISCHARGE HEADLIGHT CONTROL UNIT REMOVAL/INSTALLATION)
No
Replace headlight (LH). (See FRONT COMBINATION LIGHT REMOVAL/INSTALLATION)

Diagnostic procedure for headlight (RH)

STEP

INSPECTION

ACTION

1
INSPECT CONNECTION
• Check fit of auto leveling control unit.
• Is 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 HEADLIGHT (RH)
• Disconnect auto leveling control unit (sub) connector (20-pin).
• Is there no continuity between the following connectors?.
- Terminals F and K
Yes
Clear DTC and check DTC again.
• If DTC is displayed again, replace auto leveling control unit. (See DISCHARGE HEADLIGHT CONTROL UNIT REMOVAL/INSTALLATION)
No
Replace headlight (RH). (See FRONT COMBINATION LIGHT REMOVAL/INSTALLATION)