Subaru Crosstrek manuals

Subaru Crosstrek Service Manual: Dtc b28b6 pre-collision off switch

EyeSight (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)

DTC B28B6 PRE-COLLISION OFF SWITCH

Detected when pre-collision brake OFF switch circuit is not installed, open-circuited or is stuck to ON.

DTC detecting condition:

Wiring of pre-collision brake OFF switch is not connected.

Pre-collision brake OFF switch circuit is open.

Pre-collision brake 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">

STEPCHECKYESNO

1.CHECK CURRENT DATA.

Confirm the current data «Pre-Collision Brake OFF SW Status (BIU)» of EyeSight using Subaru Select Monitor. Read Current Data">

Does the display change according to ON/OFF operation of the pre-collision brake OFF switch?

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 B28B6 PRE-COLLISION OFF SWITCH">Go to Step 2.

2.CHECK HARNESS.

1) Disconnect the stereo camera connector and the pre-collision brake OFF switch connector.

2) Using the tester, measure the resistance between the stereo camera connector and pre-collision brake OFF switch connector as well as chassis ground.

Connector & terminal

(R406) No. 3 — (R137) No. 12:

(R406) No. 5 — Chassis ground:

Is the resistance less than 1 ??

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B28B6 PRE-COLLISION OFF SWITCH">Go to Step 3.

Repair or replace an open circuit in harness between the stereo camera connector and pre-collision brake OFF switch connector.

3.CHECK HARNESS.

Using the tester, measure the resistance between the pre-collision brake OFF switch connector and chassis ground.

Connector & terminal

(R406) No. 3 — Chassis ground:

Is the resistance 1 M? or more?

Check the pre-collision brake OFF switch. Switches and Harness > INSPECTION">

Repair or replace the short circuit to ground in harness between the stereo camera connector and pre-collision brake OFF switch connector.

Dtc b28b5 +b circuit open
EyeSight (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC B28B5 +B CIRCUIT OPENDetected when there is an open circuit in power supply line.NOTE:Refer to DTC B2814 for diag ...

Dtc b28b7 ldp off switch
EyeSight (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC B28B7 LDP OFF SWITCHDetected when lane departure warning OFF switch circuit is not installed, open-circuited, or ...

Other materials:

Inspection
SEATS > Seat Heater SystemINSPECTION1. WIRING DIAGRAMRefer to “Seat Heater System” in the wiring diagram. Seat Heater System > WIRING DIAGRAM">2. DIAGNOSTIC CHARTSymptomsRepair orderSeat heater does not operate.1. Check the fuse. Seat Heater System > INSPECTION"&g ...

Dtc p2007 tgv control stuck closed bank 2
ENGINE (DIAGNOSTICS)(H4DO) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC P2007 TGV CONTROL STUCK CLOSED BANK 2DTC DETECTING CONDITION:Immediately at fault recognitionCAUTION:After servicing or replacing faulty parts, perform Clear Memory Mode Clear Memory Mode > OPERATION" ...

Disassembly
CONTINUOUSLY VARIABLE TRANSMISSION(TR580) > Extension CaseDISASSEMBLY1. Remove the dust cover from extension case.2. Remove the extension case oil seal from the extension case. Differential Side Retainer Oil Seal > REPLACEMENT">3. Remove all plugs. ...

© 2016-2025 Copyright www.sucross.com