Mazda 6 2002 Workshop Manual page 1008

ON-BOARD DIAGNOSTIC [HEADLIGHT AUTO LEVELING SYSTEM]
Diagnostic procedure
STEP
INSPECT FRONT LEVELING SENSOR
CONNECTION
1
• Check installation condition of front auto
leveling sensor and fit of connector.
• Are installation condition and fit okay?
INSPECT WIRING HARNESS BETWEEN
FRONT AUTO LEVELING SENSOR
CONNECTOR AND HEADLIGHT (LH)
CONNECTOR
• Disconnect front auto leveling sensor
connector (6-pin) and headlight (LH)
2
connector (4-pin).
• Is there continuity between the following
connectors?
— Front auto leveling sensor connector
(terminal B) and headlight (LH) connector
(terminal 2C)
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).
3
• 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)
INSPECT HEADLIGHT (LH)
• Disconnect auto leveling control unit (main)
connector (20-pin) and headlight (LH)
connector (4-pin).
4
• Is there continuity between the following
connectors?
— Auto leveling control unit (main) connector
(terminal H) and headlight (LH) connector
(terminal 2C)
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
5
(terminal G) and headlight (LH) connector
(terminal 2C)
— Auto leveling control unit (main) connector
(terminal K) and headlight (LH) connector
(terminal 2C)
— Auto leveling control unit (main) connector
(terminal E) and headlight (LH) connector
(terminal 2C)
End Of Sie
T–156
INSPECTION
Yes Go to net step.
No After correcting fit, clear DTC and check DTC again.
• If DTC is displayed again, go to net step.
Yes Go to net step.
No Repair or replace wiring harness between front auto leveling
sensor and headlight (LH).
Yes Go to net step.
No Repair or replace wiring harness between front auto leveling
sensor and headlight (LH).
Yes Go to net step.
No Possible cause is an open circuit in headlight (LH). Replace
headlight (LH). (See
REMOVAL/INSTALLATION)
Yes Replace front auto leveling sensor.
(See T–32 FRONT AUTO LEVELING SENSOR REMOVAL/
INSTALLATION)
No Possible cause is an open circuit in headlight (LH). Replace
headlight (LH). (See
REMOVAL/INSTALLATION)
ACTION
T–26 FRONT COMBINATION LIGHT
T–26 FRONT COMBINATION LIGHT