DTC B2615

id0902i7856600

DTC B2615

Front or rear auto leveling sensors power supply 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)
Front auto leveling sensor or rear auto leveling sensor supply voltage (5 V), which is generated by auto leveling control unit (main), is incorrect.

POSSIBLE CAUSE

• Front auto leveling sensor malfunction
• Rear auto leveling sensor malfunction
• Auto leveling control unit malfunction
• Short circuit in wiring harness between front auto leveling sensor and headlight (LH)
• Short circuit in wiring harness between rear auto leveling sensor and headlight (LH)
• Headlight (LH) malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION

1
INSPECT POWER SUPPLY CIRCUIT OF HEADLIGHT (LH)
• Disconnect headlight (LH) connector (4-pin).
• Turn the ignition switch to ON.
• Measure voltage at headlight (LH) connector terminal 2A.
• Is voltage approximately 5 V?
Yes
Go to next step.
No
Go to step 4.
2
INSPECT POWER SUPPLY CIRCUIT OF FRONT AUTO LEVELING SENSOR
• Turn the ignition switch to OFF and connect headlight (LH) connector (4-pin) again.
• Disconnect front auto leveling sensor connector (6-pin).
• Measure voltage at front auto leveling sensor connector terminal D.
• Is voltage approximately 5 V?
Yes
Replace front auto leveling sensor. (See FRONT AUTO LEVELING SENSOR REMOVAL/INSTALLATION)
After replacement, clear DTC and check DTC again.
• If DTC is displayed again, go to next step.
No
Repair or replace wiring harness between front auto leveling sensor and headlight (LH).
3
INSPECT POWER SUPPLY CIRCUIT OF REAR AUTO LEVELING SENSOR
• Disconnect rear auto leveling sensor connector (6-pin).
• Measure voltage at rear auto leveling sensor connector terminal D.
• Is voltage approximately 5 V?
Yes
Replace rear auto leveling sensor. (See REAR AUTO LEVELING SENSOR REMOVAL/INSTALLATION)
After replacement, clear DTC and check DTC again.
• If DTC is displayed again, 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 K) and headlight (LH) connector (terminal 2A)
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 unit (main) connector (20-pin).
• Is there no continuity between the following connectors?
- Terminals K and E
- Terminals K and D
- Terminals K and L
Yes
Replace auto leveling control unit.
No
Possible cause is an open circuit in headlight (LH). Replace headlight (LH). (See FRONT COMBINATION LIGHT REMOVAL/INSTALLATION)