DTC B2607


DTC B2607	Auto leveling control module controlling 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) Operation of auto leveling control module (main) and auto leveling control module (sub) are reversed.
POSSIBLE CAUSE	• Mounting of auto leveling control module (main) and auto leveling control module (sub) changed • Poor fit of auto leveling control module • Headlight malfunction • Open or short circuit in wiring harness between auto leveling sensors and headlight (LH)


STEP	INSPECTION		ACTION
1	INSPECT CONNECTION • Check fit of auto leveling control module and fit of connectors. • Is fit okay?.	Yes	Go to next step.
1		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.
2		No	Repair or replace wiring harness between auto leveling sensors and headlight (LH).
3	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?. - Headlight (LH) connector (terminal 2B) and auto leveling control module (main) connector (terminal H) - Headlight (LH) connector (terminal 2A) and auto leveling control module (main) connector (terminal F)	Yes	Clear DTC and check DTC again. • If DTC is displayed again, replace auto leveling control module. (See DISCHARGE HEADLIGHT CONTROL MODULE REMOVAL/INSTALLATION)
3		No	Replace headlight (LH). (See FRONT COMBINATION LIGHT REMOVAL/INSTALLATION)


STEP	INSPECTION		ACTION
1	INSPECT CONNECTION • Check fit of auto leveling control module. • Is fit okay?.	Yes	Go to next step.
1		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 module (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 module. (See DISCHARGE HEADLIGHT CONTROL MODULE REMOVAL/INSTALLATION)
2		No	Replace headlight (RH). (See FRONT COMBINATION LIGHT REMOVAL/INSTALLATION)