2009 SUBARU TRIBECA engine

BR-39
Brake Vacuum Pump
BRAKE
16.Brake Vacuum Pump
A: REMOVAL
1. BRAKE VACUUM PUMP
1) Disconnect the ground cable from the battery.
2) Disconnect the brake vacuum pump connector.
3) Remove the vacuum hose.
4) Remove the bolt, and remove the brake vacuum
pump.
2. VACUUM HOSE
Remove the clip and remove the vacuum hose.
B: INSTALLATION
1. BRAKE VACUUM PUMP
Install in the reverse order of removal.
Tightening torque:
7.5 N·m (0.76 kgf-m, 5.5 ft-lb)
2. VACUUM HOSE
Install in the reverse order of removal.
CAUTION:
The vacuum hose has an installation direction.
Make sure to install in the proper direction.
C: INSPECTION
1. BRAKE VACUUM PUMP
Inspect for whether or not the pump operates when
battery voltage is applied to the connector terminal.
2. VACUUM HOSE
Check to see that air only flows in one direction,
when air is blown into or sucked from the hose.
(1) To engine
(2) Vacuum hose
(3) Vacuum pipe
(4) Marking (Marking to vacuum pipe side)
BR-00506
BR-00507
(1)
(2)(2)
(4)
(3)
ENG

BVC(diag)-2
Basic Diagnostic Procedure
BRAKE VACUUM CONTROL (BVC) (DIAGNOSTICS)
1. Basic Diagnostic Procedure
A: PROCEDURE
CAUTION:
•Subaru Select Monitor is required for reading DTC, reading the current data and clearing the mem-
ory.
•Remove foreign matter (dust, water, oil, etc.) from the engine control module (ECM) connector
when removing or installing.
NOTE:
•To check the harness for broken wires or short circuits, shake problem spot or connector.
•Refer to “Check List for Interview”.
Step Check Yes No
1CHECK PRE-INSPECTION.
1) Ask the customer when and how the trou-
ble occurred using interview check list. BVC(diag)-3, Check List for Interview.>
2) Check the error display. (Odo/trip meter)
Is “Er-bb” displayed on the
screen?
Go to step 3.Go to step 2.
2BASIC INSPECTION
Check the components which might affect the
brake vacuum control. INSPECTION, General Description.>
Is the component that might
affect the vacuum control nor-
mal?
Go to step 3.Repair or replace
each component.
3CHECK INDICATION OF DTC.
1) Turn the ignition switch to OFF.
2) Connect the Subaru Select Monitor to data
link connector.
3) Turn the ignition switch to ON, and the Sub-
aru Select Monitor power switch to ON.
4) Read the DTC. OPERATION, Read Diagnostic Trouble Code
(DTC).>
5) Record all DTC.
Is DTC displayed? Go to step 5.Go to step 4.
4PERFORM GENERAL DIAGNOSTICS.
Inspect using “General Diagnostic Table”.
Diagnostic Table.>
Is result of inspection OK? Finish the diagno-
sis.
Go to step 5.
5PERFORM THE DIAGNOSIS.
1) Correct the cause of trouble according to
DTC. nostic Trouble Code (DTC).>
2) Perform the clear memory mode. BVC(diag)-13, OPERATION, Clear Memory
Mode.>
3) Perform the inspection mode. BVC(diag)-12, PROCEDURE, Inspection
Mode.>
4) Read the DTC. OPERATION, Read Diagnostic Trouble Code
(DTC).>
Is DTC displayed? Repeat step 4 until
DTC is not shown.
Finish the diagno-
sis.

BVC(diag)-3
Check List for Interview
BRAKE VACUUM CONTROL (BVC) (DIAGNOSTICS)
2. Check List for Interview
A: CHECK
Check the following item about the vehicle’s state.
1. STATUS OF THE ERROR DISPLAY
An error is displayed
in odo/trip meter. Always
Sometimes
Only once
Does not come on
• When/How long does it come on?
Ignition key position LOCK
ACC
ON (before starting engine)
START
ON (after starting engine, while engine is running)
ON (after starting engine, engine is stop)
Timing Immediately after turning the ignition switch to ON
Immediately after turning the ignition switch to START
Accelerating — km/h
— MPH
While traveling at a constant speedkm/h MPH
Reducing speed — km/h
— MPH

BVC(diag)-4
Check List for Interview
BRAKE VACUUM CONTROL (BVC) (DIAGNOSTICS)
2. CONDITIONS UNDER WHICH TROUBLE OCCURS
Environment a) Weather Fine
Cloudy
Rainy
Snowy
Others:
b) Ambient temperature°C (°F)
c) Altitudem (ft)
d) Road Inner city
Suburbs
Highway
General road
Uphill
Downhill
Paved road
Gravel road
Muddy road
Sandy place
Straight road
Sharp cur ve
Gentle curve
S-curve
Road with a slope on both sides
Others:
e) Road surface Dr y
Wet
New-fallen snow
Compressed snow
Frozen slope
Others:
Condition a) Brakes Deceleration: G
continuous / intermittent
b) Accelerator Acceleration: G
continuous / intermittent
c) Vehicle speed km/h MPH
Advancing
Accelerating
Reducing speed
Low speed
Turning
Others:
Immediately after
starting the engine
Idling etc.

BVC(diag)-6
Electrical Component Location
BRAKE VACUUM CONTROL (BVC) (DIAGNOSTICS)
4. Electrical Component Location
A: LOCATION
(1) Brake vacuum pump relay (4) Test mode connector (6) Data link connector
(2) Brake vacuum pump (5) Engine control module (ECM) (7) Odo/trip meter
(3) Brake vacuum sensor
BR-00520
(1)
(2)(3)
(7)
(4)
(5)
(6)

BVC(diag)-8
Engine Control Module (ECM) I/O Signal
BRAKE VACUUM CONTROL (BVC) (DIAGNOSTICS)
5. Engine Control Module (ECM) I/O Signal
A: ELECTRICAL SPECIFICATION
DescriptionConnector
No.
Te r m i n a l
No.
Signal (V)
NOTEIgnition SW ON
(engine OFF)
Engine ON
(idling)
Brake vacuum
sensor
Signal B134 27 1 — 3.8 1 — 3.8 —
Pow er s up pl y B 1 35 2 2 5 5 —
Ground B135 30 0 0 —
Self-shutoff control B136 23 0 0 —
Brake vacuum
pump
Relay drive B136 8
10 — 13
(When the pump is OFF)
12 — 14
(When the pump is ON)—
0 (When the pump is ON) 0 (When the pump is ON)
Electric load B135 25
0 (When the pump is OFF) 0 (When the pump is OFF)
—10 — 13
(When the pump is ON)
12 — 14
(When the pump is ON)
SSM communication line B136 16 1 or less ←→ 4 or more 1 or less ←→ 4 or more —
EN-01812
B134
5678219431024 2223251112131415262728
1617181920213334 2932 3031
B136
5678219431024 2223251112131415262728
16171819202133342932303135
B135
5678219431024 2223251112131415262728
16171819202129303132333435
B137
5678219431022231112131415242526
1617181920212728293031
ToToToTo

BVC(diag)-9
Subaru Select Monitor
BRAKE VACUUM CONTROL (BVC) (DIAGNOSTICS)
6. Subaru Select Monitor
A: OPERATION
1. READ DIAGNOSTIC TROUBLE CODE
(DTC)
1) Prepare the Subaru Select Monitor kit. BVC(diag)-5, SPECIAL TOOL, PREPARATION
TOOL, General Description.>
2) Connect the diagnosis cable to Subaru Select
Monitor.
3) Insert the cartridge to the Subaru Select Monitor.
RATION TOOL, General Description.>
4) Connect the Subaru Select Monitor to data link
connector.
(1) Data link connector is located in the lower
portion of instrument panel (on the driver’s
side).
(2) Connect the diagnosis cable to data link
connector.
CAUTION:
Do not connect the scan tools except for Suba-
ru Select Monitor.
5) Turn the ignition switch to ON (engine OFF) and
turn the Subaru Select Monitor switch to ON.
6) On the «Main Menu» display screen, select the
{Each System Check} and press the [YES] key.
7) On the «System Selection Menu» display
screen, select the {Brake Negative Pressure Pump
System} and press the [YES] key.
8) Press the [YES] key after the {3.0 DOHC} is dis-
played.
9) On the «Negative Pressure Pump Diagnosis
Menu» display screen, select the {Diagnostic
Code(s) Display} and press the [YES] key.
NOTE:
•For details concerning operation procedure, re-
fer to the “SUBARU SELECT MONITOR OPERA-
TION MANUAL”.
•For details concerning DTCs, refer to “List of Di-
agnostic Trouble Code (DTC)”. 14, List of Diagnostic Trouble Code (DTC).>
ABS00111
ABS00112
EN-03693
(A) Power switch
(A)
EN-00040

BVC(diag)-10
Subaru Select Monitor
BRAKE VACUUM CONTROL (BVC) (DIAGNOSTICS)
2. READ CURRENT DATA
1) On the «Main Menu» display screen, select the {Each System Check} and press the [YES] key.
2) On the «System Selection Menu» display screen, select the {Brake Negative Pressure Pump System} and
press the [YES] key.
3) Press the [YES] key after the {3.0 DOHC} is displayed.
4) On the «Negative Pressure Diagnosis Menu» display screen, select the {Current Data Display/Save}, and
then press the [YES] key.
5) On the «Data Display Menu» screen, select the {Data Display} and press the [YES] key.
6) Using a scroll key, scroll the display screen up or down until necessary data is shown.
•A list of the support data is shown in the following table.
NOTE:
For details concerning operation procedure, refer to the “SUBARU SELECT MONITOR OPERATION MAN-
UAL”.
3. CLEAR MEMORY MODE
1) On the «Main Menu» display screen, select the
{Each System Check} and press the [YES] key.
2) On the «System Selection Menu» display
screen, select the {Brake Negative Pressure Pump
System} and press the [YES] key.
3) Press the [YES] key after the {3.0 DOHC} is dis-
played.
4) On the «Negative Pressure Pump Diagnosis
Menu» display screen, select the {Clear Memory}
and press the [YES] key.
5) When “Done” and “Turn ignition switch OFF” are
shown on the display screen, turn the Subaru Se-
lect Monitor and ignition switch to OFF.
NOTE:
For details concerning operation procedure, refer
to the “SUBARU SELECT MONITOR OPERATION
MANUAL”.
4. FUNCTION CHECK MODE
1) Connect the test mode connector located under
the glove box.
2) Turn the ignition switch to ON (engine OFF) and
turn the Subaru Select Monitor switch to ON.
3) On the «Main Menu» display screen, select the
{Each System Check} and press the [YES] key.
4) On the «System Selection Menu» display
screen, select the {Brake Negative Pressure Pump
System} and press the [YES] key.
5) Press the [YES] key after the {3.0 DOHC} is dis-
played.
6) On the «Negative Pressure Pump Diagnosis
Menu» display screen, select the {Function Check
Mode} and press the [YES] key.
7) When the “Start Function Check Mode” is shown
on the screen, press the [YES] key.
8) When the “Depress the Brake Pedal 5 Times” is
shown on the screen, depress the brake pedal 5
times, and press the [YES] key while brake pedal is
not depressed.
9) Press the [YES] key after the {OK} is displayed.
Display Contents to be monitored Unit of measure
Atmospheric pressure Atmospheric pressure is displayed. mmHg, kPa or psig
Brake booster pressure Brake booster pressure is displayed. mmHg, kPa or psig
Te s t m o d e t e r m i n a l Te s t m o d e t e r m i n a l c o n n e c t i o n s t a t u s i s d i s p l a y e d . D C h e c k o r U C h e c k
Negative pressure pump motor Negative pressure motor operating status is displayed. ON or OFF
Negative pressure pump motor relay Negative pressure pump motor relay operating status is displayed. ON or OFF
Display Contents to be monitored
Clear Memory? DTC deleting function
(A) Test mode connector
EN-03694
(4)