FORESTER 20MY PubNo: G8270BE Version: 006

Blind Spot Detection/Rear Cross Traffic Alert > General Description　

LOCATION

For location, refer to “LOCATION” of “Blind Spot Detection/Rear Cross Traffic Alert (DIAGNOSTICS)” section. Blind Spot Detection/Rear Cross Traffic Alert (DIAGNOSTICS)>Electrical Component Location>LOCATION

Blind Spot Detection/Rear Cross Traffic Alert > General Description　

COMPONENT

1. RADAR SENSOR

(1)	Radar sensor (master & slave)	(3)	Bracket skirt	Tightening torque: N·m (kgf-m, ft-lb)
(2)	Radar bracket			T:	7.5 (0.8, 5.5)

Blind Spot Detection/Rear Cross Traffic Alert > General Description　

CAUTION

When performing service operation, refer to “Repair Contents” in “General Description”. REPAIR CONTENTS>Repair Contents
Before disconnecting connectors of sensors or units, be sure to disconnect the ground terminal from the battery sensor. When replacing the electrical parts provided with memory functions that can store contents specified by a customer, record the memory contents before disconnecting the ground terminal from the battery sensor.
For precautions for rear vehicle detection function, refer to “CAUTION” in “Blind Spot Detection/Rear Cross Traffic Alert (DIAGNOSTICS)” section. Blind Spot Detection/Rear Cross Traffic Alert (DIAGNOSTICS)>General Description>CAUTION

Blind Spot Detection/Rear Cross Traffic Alert > General Description　

PREPARATION TOOL

1. SPECIAL TOOL

ILLUSTRATION	TOOL NUMBER	DESCRIPTION	REMARKS
	87699AL00A	Radar reflector	Used for adjusting the radar axis of the radar sensor. Attach the radar reflector to a round pole with a diameter of approx. 20 mm (0.79in) or a 20-mm (0.79in) square pole.
	—	SUBARU SELECT MONITOR 4	Used for setting of each function and troubleshooting for electrical system. For detailed operation procedures, refer to “Help” of application.

2. GENERAL TOOL

TOOL NAME	REMARKS
Circuit tester	Used for measuring resistance, voltage and current.
DST-i	Used together with Subaru Select Monitor 4.
Clip remover	Used for removing clips.
Measure (5 m (16 ft) or more)	Used for adjusting the radar axis of the radar sensor.
Leveling line
Plumb bob
Stand, tripod, etc.

Blind Spot Detection/Rear Cross Traffic Alert > Relay and Fuse　

LOCATION

Fuse & relay box (F/B)	Fuse 7.5 A (radar sensor LH (master), radar sensor RH (slave))	(A)
Fuse & relay box (F/B)	Fuse 10 A (BSD/RCTA OFF switch)	(B)

For other related fuses, refer to the wiring diagram. WIRING SYSTEM>Power Supply Circuit>WIRING DIAGRAM

Blind Spot Detection/Rear Cross Traffic Alert > Relay and Fuse　

INSPECTION

1. CHECK FUSE

1.

Remove the fuse and inspect visually.

2.

If the fuse is blown out, replace the fuse.

If the fuse is blown again, check the system wiring harness.

Blind Spot Detection/Rear Cross Traffic Alert > Blind Spot Detection/Rear Cross Traffic Alert　

WIRING DIAGRAM

Refer to “Blind Spot Detection/Rear Cross Traffic Alert system” in the wiring diagram. WIRING SYSTEM>Blind Spot Detection/Rear Cross Traffic Alert>WIRING DIAGRAM

Blind Spot Detection/Rear Cross Traffic Alert > Blind Spot Detection/Rear Cross Traffic Alert　

INSPECTION

1. BASIC INSPECTION

For basic inspection, refer to “Basic Diagnostic Procedure” of “Blind Spot Detection/Rear Cross Traffic Alert (DIAGNOSTICS)” section. Blind Spot Detection/Rear Cross Traffic Alert (DIAGNOSTICS)>Basic Diagnostic Procedure

2. SYSTEM BLOCK DIAGRAM

For system block diagram, refer to “System Block Diagram” in the “Blind Spot Detection/Rear Cross Traffic Alert (DIAGNOSTICS)” section. Blind Spot Detection/Rear Cross Traffic Alert (DIAGNOSTICS)>General Description>SYSTEM BLOCK DIAGRAM

3. MODULE I/O SIGNAL

For electrical specification, refer to “Control Module I/O Signal” of “Blind Spot Detection/Rear Cross Traffic Alert (DIAGNOSTICS)” section. Blind Spot Detection/Rear Cross Traffic Alert (DIAGNOSTICS)>Control Module I/O Signal>ELECTRICAL SPECIFICATION

Blind Spot Detection/Rear Cross Traffic Alert > Blind Spot Detection/Rear Cross Traffic Alert　

NOTE

For procedure of each component in the Blind Spot Detection/Rear Cross Traffic Alert system, refer to the respective sections.

Control module
System control of the Blind Spot Detection/Rear Cross Traffic Alert is performed by each module. For procedure, refer to the following sections.
- Transmission control module (TCM): CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Control Module (TCM)
- VDC control module & hydraulic control unit (VDCCM&H/U): VEHICLE DYNAMICS CONTROL (VDC)>VDC Control Module and Hydraulic Control Unit (VDCCM&H/U)
- Body integrated unit: SECURITY AND LOCKS>Body Integrated Unit
Radar sensor: Blind Spot Detection/Rear Cross Traffic Alert>Radar Sensor
BSD/RCTA OFF switch: Blind Spot Detection/Rear Cross Traffic Alert>Switches and Harness
Combination meter: INSTRUMENTATION/DRIVER INFO>Combination Meter
Outer mirror assembly: GLASS/WINDOWS/MIRRORS>Outer Mirror Assembly
Navigation unit: ENTERTAINMENT & MONITORING>Audio

Blind Spot Detection/Rear Cross Traffic Alert > Control Unit　

NOTE

System control of the Blind Spot Detection/Rear Cross Traffic Alert is performed by each module. For procedure, refer to the following sections.

Transmission control module (TCM): CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Transmission Control Module (TCM)
VDC control module & hydraulic control unit (VDCCM&H/U): VEHICLE DYNAMICS CONTROL (VDC)>VDC Control Module and Hydraulic Control Unit (VDCCM&H/U)
Body integrated unit: SECURITY AND LOCKS>Body Integrated Unit

Blind Spot Detection/Rear Cross Traffic Alert > Radar Sensor　

REMOVAL

1. RADAR SENSOR LH (MASTER)

1.

Disconnect the ground terminal from battery sensor. REPAIR CONTENTS>NOTE > BATTERY

2.

Remove the bumper face rear. EXTERIOR/INTERIOR TRIM>Rear Bumper>REMOVAL

3.

Remove the radar sensor LH (master).

(1)

Disconnect the connector.

(2)

Remove the nut and remove the radar sensor LH (master).

4.

Remove the radar bracket.

(1)

Remove the nut and remove the radar bracket.

5.

Remove the bracket skirt.

(1)

Remove the harness clip.

(2)

Remove the nut and remove the bracket skirt.

For models with keyless access with push button start, remove the rear antenna assembly exterior.

2. RADAR SENSOR RH (SLAVE)

For the procedure of radar sensor RH (slave), refer to “RADAR SENSOR LH (MASTER)”.

Blind Spot Detection/Rear Cross Traffic Alert > Radar Sensor　

INSTALLATION

1.

Attach the bracket skirt.

Tightening torque:

7.5N·m (0.8kgf-m, 5.5ft-lb)

2.

Install the radar bracket.

Tightening torque:

7.5N·m (0.8kgf-m, 5.5ft-lb)

3.

Install the radar sensor.

Tightening torque:

7.5N·m (0.8kgf-m, 5.5ft-lb)

4.

Install the bumper face rear. EXTERIOR/INTERIOR TRIM>Rear Bumper>INSTALLATION

5.

Connect the ground terminal to battery sensor. REPAIR CONTENTS>NOTE > BATTERY

6.

Perform the adjustment of the radar sensor radar axis. Blind Spot Detection/Rear Cross Traffic Alert>Radar Sensor>ADJUSTMENT > RADAR AXIS ADJUSTMENT

Blind Spot Detection/Rear Cross Traffic Alert > Radar Sensor　

ADJUSTMENT

1. RADAR AXIS ADJUSTMENT

After removal/installation of the radar sensor or the radar bracket, perform the radar axis adjustment.
The procedure for the master is only shown here. However the procedure for the slave can also be done in the same way as the master.

1.

Before performing the inspection, check the following items.

The inflation pressure of tires is correct.
The vehicle does not have load.
Vehicle’s fuel tank is fully filled.

2.

Place the vehicle on a level surface, where approximately 5 m (16.41ft) square area can be secured behind the vehicle.

No metallic objects around the vehicle and on the floor in the area.
Do not let in objects other than the radar reflector (ST), persons and metallic objects inside the area.

(a)	Approx. 4 m (13.12ft)
(b)	Approx. 5 m (16.41ft)

The illustration shows the secured area for adjusting the radar axis on the master side.

3.

Prepare the Subaru Select Monitor, measure, leveling line, plumb bob, RADAR REFLECTOR (ST), and stand or tripod for fixing the RADAR REFLECTOR.

Preparation tool:

ST: RADAR REFLECTOR (87699AL00A)

4.

Set up the radar reflector.

The following procedure explains the method of setting the radar reflector so that the distance between radar reflector and radar sensor is 1,500 mm (4.92ft) and the radar is positioned at an angle of 50 degree.

(1)

Suspend the plumb bob from the center of the front hole cap, and mark the position where the plumb bob touches the ground. (Point A)

(a)	Front hole cap	(c)	Plumb bob	(d)	Point A
(b)	Leveling line

Stick the packing tape etc. on the floor, then make a marking on the tape.

(2)

Suspend the plumb bob from the center of the bumper face rear mounting clip, and mark the position where the plumb bob touches the ground. (Point B)

(a)	Bumper face rear mounting clip	(c)	Plumb bob	(d)	Point B
(b)	Leveling line

Stick the packing tape etc. on the floor, then make a marking on the tape.

(3)

Stretch a leveling line to draw an arc with the marked point A as a pivot.

(4)

Stretch a leveling line to draw an arc with the marked point B as a pivot.

(5)

Set up the radar reflector at the cross point.

When setting up the radar reflector, adjust the height so that the center of the pyramid points at the radar sensor as shown in the figure.

(a)	752±10 mm (29.61±0.39in)
(b)	Center of pyramid

(a)	Point A	(c)	Radar reflector	(e)	4,287 mm (14.07ft)
(b)	Point B	(d)	Radar sensor	(f)	1,787 mm (5.86ft)

5.

Connect the Subaru Select Monitor.

6.

Turn the ignition switch to ON and wait for 10 seconds.

7.

Perform radar axis adjustment.

(1)

On [Start] screen, select [Diagnosis].

(2)

On [Vehicle selection] screen, enter vehicle information and select [OK].

(3)

On [Main Menu] screen, select [Each System].

(4)

On [Select System] screen, select [Blind Spot Detection/Rear Cross Traffic Alert(RH)] or [Blind Spot Detection/Rear Cross Traffic Alert(LH)], and then select [Next].

(5)

On [Select Function] screen, select [Work Support].

(6)

On the work support item list, select [RADAR Alignment].

(7)

Follow the messages displayed on the Subaru Select Monitor screen when working.

Deviation of radar axis direction is indicated by + (plus) or − (minus).

(a)	Center of radar
(b)	+ (plus)
(c)	− (minus)

(8)

If the result is out of permissive range, it is assumed that the radar reflector position may be incorrect or the radar bracket or its installation location on the vehicle may be deformed. Check the set position of the radar reflector, radar bracket and other attachment, and perform the radar axis adjustment again.

Blind Spot Detection/Rear Cross Traffic Alert > Switches and Harness　

REMOVAL

1. BSD/RCTA OFF SWITCH

1.

Disconnect the ground terminal from the battery sensor, and wait for at least 60 seconds before starting work. REPAIR CONTENTS>NOTE > BATTERY

2.

Remove the cover LWR driver. EXTERIOR/INTERIOR TRIM>Instrument Panel Lower Cover>REMOVAL

3.

Remove the BSD/RCTA OFF switch.

(1)

Release the claws and remove the BSD/RCTA OFF switch (g).

Blind Spot Detection/Rear Cross Traffic Alert > Switches and Harness　

INSTALLATION

1. BSD/RCTA OFF SWITCH

1.

Install the BSD/RCTA OFF switch.

2.

Install the cover LWR driver. EXTERIOR/INTERIOR TRIM>Instrument Panel Lower Cover>INSTALLATION

3.

Connect the ground terminal to battery sensor. REPAIR CONTENTS>NOTE > BATTERY

Blind Spot Detection/Rear Cross Traffic Alert > Switches and Harness　

INSPECTION

1. BSD/RCTA OFF SWITCH

1.

Measure the resistance between connector terminals.

Preparation tool:

Circuit tester

Terminal No.	Inspection conditions	Standard
6 — 8	Switch OFF	1 MΩ or more
6 — 8	Switch ON	Less than 1 Ω

2.

Apply battery voltage between the connector terminals to check lighting condition of illumination inside the switch.

When applying battery voltage, do not mix up the positive (+) side and the negative (−) side.

Incorrect polarity connection may cause LED damage inside the switch.

Terminal No.	Inspection conditions	Specification
1 (+) — 4 (−)	Apply battery voltage.	Light ON

3.

Replace the BSD/RCTA OFF switch if it is found defective.

Blind Spot Detection/Rear Cross Traffic Alert > Combination Meter　

NOTE

For the operation procedures for combination meter, refer to “INSTRUMENTATION/DRIVER INFO” section. INSTRUMENTATION/DRIVER INFO>Combination Meter

Blind Spot Detection/Rear Cross Traffic Alert > Outer Mirror Assembly　

NOTE

For the operation procedures for the outer mirror assembly, refer to “GLASS/WINDOWS/MIRRORS” section. GLASS/WINDOWS/MIRRORS>Outer Mirror Assembly

Blind Spot Detection/Rear Cross Traffic Alert > Navigation Body　

NOTE

For the operation procedures for navigation unit, refer to “ENTERTAINMENT & MONITORING” section. ENTERTAINMENT & MONITORING>Audio

Blind Spot Detection/Rear Cross Traffic Alert > Diagnostics with Phenomenon　

INSPECTION

For diagnostics with phenomenon, refer to “Diagnostics with Phenomenon” of “Blind Spot Detection/Rear Cross Traffic Alert (DIAGNOSTICS)” section. Blind Spot Detection/Rear Cross Traffic Alert (DIAGNOSTICS)>Diagnostics with Phenomenon