EyeSight (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC B28B7 LDP OFF SWITCH
Detected when lane departure warning OFF switch circuit is not installed, open-circuited, or is stuck to ON.
DTC detecting condition:
• Wiring of lane departure warning OFF switch is not connected.
• Lane departure warning OFF switch circuit is open.
• Lane departure warning OFF switch circuit stays ON for 45 seconds or more.
Trouble symptom:
All functions of EyeSight system do not operate.
Wiring diagram:
EyeSight System EyeSight System > WIRING DIAGRAM">
STEP | CHECK | YES | NO |
1.CHECK CURRENT DATA.
Confirm the current data «Lane Departure OFF SW (BIU)» of EyeSight using Subaru Select Monitor. Read Current Data">
Does the display change according to the lane departure warning OFF switch ON/OFF operation?
Even if DTC is displayed, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.
NOTE:
In this case, temporary poor contact of connector, or temporary open or short circuit of harness may be the cause.
Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B28B7 LDP OFF SWITCH">Go to Step 2.
2.CHECK HARNESS.
1) Disconnect the stereo camera connector and the lane departure warning OFF switch connector.
2) Using the tester, measure the resistance between the stereo camera connector and lane departure warning OFF switch connector as well as chassis ground.
Connector & terminal
(R406) No. 4 — (R137) No. 13:
(R406) No. 5 — Chassis ground:
Is the resistance less than 1 ??
Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B28B7 LDP OFF SWITCH">Go to Step 3.
Repair or replace an open circuit in harness between the stereo camera connector and lane departure warning OFF switch connector.
3.CHECK HARNESS.
Using the tester, measure the resistance between the lane departure warning OFF switch connector and chassis ground.
Connector & terminal
(R406) No. 4 — Chassis ground:
Is the resistance 1 M? or more?
Check the lane departure warning OFF switch. Switches and Harness > INSPECTION">
Repair or replace the short circuit to ground in harness between the stereo camera connector and lane departure warning OFF switch connector.
Initial illumination for system check
Several of the warning and indicator lights
illuminate when the ignition switch is
initially turned to the "ON" position. This
permits checking the operation of the
bulbs.
Apply the parking brake and turn the
ignition switch to the "ON" position. For
the system check, the following lights
...
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