2009 SUBARU TRIBECA relay

AC(diag)-22
Diagnostics for A/C System Malfunction
HVAC SYSTEM (AUTO A/C) (DIAGNOSTICS)
7CHECK A/C ON SIGNAL.
1) Turn the ignition switch to OFF.
2) Connect the A/C relay and all disconnected
connectors.
3) Start the engine and turn the AUTO switch
to ON.
4) Turn the temperature control dial at maxi-
mum cool position.
5) Measure the voltage between auto A/C
control module harness connector terminal
and chassis ground.
Connector & terminal
(B283) No. 6 (+) — Chassis ground (–):
Is the voltage more than 10 V? Go to step 9.Go to step 8.
8CHECK HARNESS BETWEEN AUTO A/C
CONTROL MODULE AND ECM.
1) Turn the ignition switch to OFF.
2) Disconnect the harness connector of auto
A/C control module and ECM.
3) Measure the resistance of harness
between auto A/C control module connector
and ECM connector.
Connector & terminal
(B283) No. 6 — (B136) No. 24:
Is the resistance less than 1
Ω?
Replace the auto
A/C control mod-
ule. 32, REMOVAL,
Control Unit (Auto
A/C Model).>
Repair the har-
ness.
9CHECK MAGNET CLUTCH ON SIGNAL.
1) Stop the engine, and turn the AUTO switch
to OFF.
2) Turn the ignition switch to ON.
3) Measure the voltage between ECM con-
nector terminal and chassis ground.
Connector & terminal
(B136) No. 9 (+) — Chassis ground (–):
Is the voltage more than 10 V? Go to step 10.Check for open or
short circuit in the
harness between
A/C relay and
ECM.
10 CHECK MAGNET CLUTCH ON SIGNAL.
1) Start the engine and turn the AUTO switch
to ON.
2) Turn the temperature control dial at maxi-
mum cool position.
3) Measure the voltage between ECM con-
nector terminal and chassis ground.
Connector & terminal
(B136) No. 9 (+) — Chassis ground (–):
Is the voltage 0 V? Go to step 11.Replace the ECM.
FU(H6DO)-32,
REMOVAL,
Engine Control
Module (ECM).>
11 CHECK POWER SUPPLY FOR MAGNET
CLUTCH.
1) Stop the engine, and turn the AUTO switch
to OFF.
2) Disconnect the harness connector of mag-
net clutch.
3) Start the engine and turn the AUTO switch
to ON.
4) Turn the temperature control dial at maxi-
mum cool position.
5) Measure the voltage between magnet
clutch harness connector terminal and chassis
ground.
Connector & terminal
(F24) No. 1 (+) — Chassis ground (–):
Is the voltage more than 10 V? Go to step 12.Check for open or
short circuit in the
harness between
A/C relay and
magnet clutch.
Step Check Yes No

AC(diag)-39
Diagnostics with Phenomenon
HVAC SYSTEM (AUTO A/C) (DIAGNOSTICS)
9. Diagnostics with Phenomenon
A: INSPECTION
Symptom Problem parts
A/C system fails to operate.
•Fuse (M/B No. 15, F/B No. 7, 22, 31)
•Connector (Poor contact)
•Ground
•Auto A/C control module
•Blower fan motor
•Blower fan relay
•A/C relay
•Compressor (Magnet clutch)
•Evaporator sensor
Fuse is blown out.•Fuse (M/B No. 8, F/B No. 22, 31)
•Connector (Poor contact)
Illumination cannot dim.
•Fuse (M/B No. 8, F/B No. 22, 31)
•Connector (Poor contact)
•Illumination control switch
•Auto A/C control module
•Body integrated unit
Blower fan does not rotate or fan speed cannot be controlled.
•Fuse (F/B No. 22, 27, 28)
•Connector (Poor contact)
•Ground
•Auto A/C control module
•Blower fan motor
•Blower fan relay
•Power transistor or blower resistor
Unable to switch suction vents.
•Connector (Poor contact)
•Auto A/C control module
•Intake door actuator
Unable to switch blow vents.
•Connector (Poor contact)
•Auto A/C control module
•Mode door actuator
The compar tment temperature does not rise. (Warm air not
emitted.)
•Connector (Poor contact)
•Auto A/C control module
•Air mix door actuator
•In-vehicle sensor, ambient sensor, evaporator sensor and
sunload sensor
•In-vehicle sensor aspirator hose
•Aspirator body
The compar tment temperature does not lower. (Cold air not
emitted.)
•Connector (Poor contact)
•Auto A/C control module
•Air mix door actuator
•A/C relay
•Compressor (Magnet clutch)
•Radiator fan motor
•Radiator fan relay
•In-vehicle sensor, ambient sensor, evaporator sensor and
sunload sensor
•In-vehicle sensor aspirator hose
•Aspirator body
Compartment temperature is higher or lower than setting tem-
perature.
•Auto A/C control module
•Air mix door actuator
•In-vehicle sensor, ambient sensor, evaporator sensor and
sunload sensor
•In-vehicle sensor aspirator hose
•Aspirator body

AC(diag)-40
Diagnostics with Phenomenon
HVAC SYSTEM (AUTO A/C) (DIAGNOSTICS)
Compartment temperature does not quickly respond to setting
temperature.
•Air mix door actuator
•In-vehicle sensor, ambient sensor, evaporator sensor and
sunload sensor
•In-vehicle sensor aspirator hose
•Aspirator body
Radiator fan does not rotate during A/C operation.•Radiator fan motor
•Radiator fan relay
Seat heater does not run.
•Seat thermistor
•Seat heater relay
•Seat heater
•Auto A/C control module
•Front control panel
Symptom Problem parts

IM (diag)-15
List of Diagnostic Trouble Code (DTC)
IMMOBILIZER (DIAGNOSTICS)
2. BODY INTEGRATED UNIT
NOTE:
In immobilizer system, performing the starter relay control. When the body integrated unit detect the incon-
formity of reference code, immediately out put the starter relay cut signal to ECM, and then ECM stop the
starter relay operation. In this case, engine does not start, and DTC is not recorded in ECM. Check that the
engine does not start on the DTC of body integrated unit.
DTC Item Contents of diagnosis Index No.Relation between
ECM and DTC
B0401 M collation
NG
Reference code incompati-
bility between body inte-
grated unit and combination
meter
URE, Diagnostic Procedure with Diagnostic Trouble
Code (DTC).>
P1578
B0402 Immobilizer
Key collation
NG
•Incorrect immobilizer key
(Use of unregistered key in
body integrated unit)
•Faulty antenna
IMMOBILIZER KEY, Diagnostic Procedure with
Diagnostic Trouble Code (DTC).> 17, DTC P1570 ANTENNA, Diagnostic Procedure
with Diagnostic Trouble Code (DTC).>or (diag)-22, DTC P1574 KEY COMMUNICATION
FA I L U R E , D i a g n o s t i c P r o c e d u r e w i t h D i a g n o s t i c
Tr o u b l e C o d e ( D T C ) . >
•P0513
•P1570
•P1574
B0403 E/G request
NG
Communication failure
between body integrated
unit and ECM
FA I L U R E ( E X C E P T A N T E N N A C I R C U I T ) , D i a g n o s -
tic Procedure with Diagnostic Trouble Code (DTC).>
P1572

LAN(diag)-10
Control Module I/O Signal
LAN SYSTEM (DIAGNOSTICS)
Manual switch (UNLOCK) i84 A29 Less than 1 ΩDoor unlock switch ON
Door lock power supply i84 A34 10 — 13 V Always
All door lock output i84 A7 10 — 13 V Manual lock switch, door key switch ON
Driver’s door UNLOCK
outputi84 A23 10 — 13 V Driver’s seat unlock signal ON
All door UNLOCK output i84 A8 10 — 13 V ALL door unlock signals ON
Rear gate UNLOCK out-
puti84 A22 10 — 13 VWhen rear gate release switch ON with
all seats unlocked
Rear gate release switch B281 C22 0 V Rear gate release switch ON
Key/shift lock power sup-
plyB281 C1 10 — 13 V Always
Shift lock output B280 B6 10 — 13 VIgnition switch ON, shift position “P”
range, foot brake ON (Only AT)
Key locking output B280 B5 10 — 13 VOther than “P” range, ignition switch
ON
Wiper deicer switch i84 A14 0 V Wiper deicer switch ON
Wiper deicer relay output B280 B14 0 V Wiper deicer relay ON
Rear defogger switch i84 A28 0 V Rear defogger switch ON
Rear defogger relay out-
putB281 B16 0 V Rear defogger relay ON
Shift switch (ON) B281 C26 0 V At Manual mode
Shift switch (UP) B281 C15 0 V At Manual mode UP
Shift switch (DOWN) B281 C25 0 V At Manual mode DOWN
Shift button switch B281 C24 0 VWhen shift lever release button is oper-
ated
P range switch B281 C13 0 V Shift range P position
Impact sensor B281 C5 8 V or moreImpact sensor ON (Model with impact
sensor)
Fuel level sensor B281 C19 0 — 102.3 Ω
Resistance differs according to the fuel
level (displays resistance combining
level gauge main and sub)
Ambient temperature sen-
sor
B281 C3 0.5 — 4.5 V SIG
B281 C10 0 V GND
Seat belt switch (driver’s
seat)i84 A4 0 V When driver’s seat belt is worn
Seat belt switch (Passen-
ger’s seat)i84 A13 0 V When passenger’s seat belt is worn
Seat belt warning light
(driver’s seat)i84 A20 0 V When driver’s seat belt is worn
Seat belt warning light
(Passenger’s seat)B280 C27 0 V When passenger’s seat belt is worn
Rear wiper switch (ON) B281 C6 0 V Rear wiper switch ON
Rear wiper switch (INT) B281 C18 0 V Rear wiper switch ON
Rear washer switch B281 C27 0 V Rear washer switch ON
Rear wiper power supply B280 B21 10 — 13 V Ignition switch ON
Rear wiper ON output B280 B1 10 — 13 V Rear wiper switch ON
Rear wiper return B280B8 0 VAt wiper reversingB1 — B8 0 V
Room lamp output B280 B3 0 VWhen LOCK, UNLOCK with keyless
entry
Map lamp output B280D2 0 V When using map lamp
D9 0 V When using map lamp
DescriptionConnec-
tor No.
Te r m i n a l
No.
Signal (V)
NoteIgnition switch ON
(Engine OFF)

LAN(diag)-15
Subaru Select Monitor
LAN SYSTEM (DIAGNOSTICS)
P seatbelt SW input ON/OFFBody integrated unit input
valuePa s se ng e r ’s se at bu ckl e sw it c h ON
Fr wi pe r in p ut O N/O FFBody integrated unit input
valueOn when front wiper is operating
Registration SW input ON/OFFBody integrated unit input
value
Not supported by North American specifica-
tions
Identification SW input ON/OFFBody integrated unit input
value
Not supported by North American specifica-
tions
R defogger output ON/OFFBody integrated unit output
valueOn when rear defogger relay is operating
Door lock actuator LOCK
outputON/OFFBody integrated unit output
valueOn when lock signal is output
All seat UNLOCK output ON/OFFBody integrated unit output
valueOn when unlock signal is output
D-seat UNLOCK output ON/OFFBody integrated unit output
valueOn when unlock signal is output
R gate/trunk UNLK output ON/OFFBody integrated unit output
value
On when rear gate/trunk unlock signal is
output
Double lock output ON/OFFBody integrated unit output
value
Not supported by North American specifica-
tions
R wiper output ON/OFFBody integrated unit output
valueOn when rear wiper is operating
Shift Lock Solenoid ON/OFFBody integrated unit output
valueOn when shift lock solenoid is operating
Key locking output ON/OFFBody integrated unit output
valueOn when key lock solenoid is operating
wiper deicer SW input ON/OFFBody integrated unit output
valueOn when wiper deicer is operating
Starter cutting output ON/OFFBody integrated unit output
value
Not supported by North American specifica-
tions
Hazard Output ON/OFFBody integrated unit output
value
On when keyless lock/unlock signal is
received (when keyless switch connector is
removed)
Keyless Buzzer Output ON/OFFBody integrated unit output
value
On when keyless lock/unlock signal is
received (when keyless switch connector is
removed)
Horn Output ON/OFFBody integrated unit output
valueOn when security warning is operating
Siren Output ON/OFFBody integrated unit output
value
On when siren is installed, customize set-
tings are enabled, and security warning is
operating
D-belt warning light O/P ON/OFFBody integrated unit output
value
On when Ignition switch is turned to ON,
and buckle switch is turned off
P-belt warning light O/P ON/OFFBody integrated unit output
value
On when Ignition switch is turned to ON,
occupant is seated, and buckle switch is
turned off
Illumination lamp O/P ON/OFFBody integrated unit output
valueOn when illumination is illuminated
Room lamp output ON/OFFBody integrated unit output
value
On when keyless lock/unlock signal is
received (when keyless switch connector is
removed)
key illumi. lamp o/p ON/OFFBody integrated unit output
valueOn when key illumination light is illuminated
R fog light output ON/OFFBody integrated unit output
value
Not supported by North American specifica-
tions
R fog lamp monitor ON/OFFBody integrated unit output
value
Not supported by North American specifica-
tions
Items to be displayed Unit of measure Description Note

LAN(diag)-32
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
LAN SYSTEM (DIAGNOSTICS)
12.Diagnostic Procedure with Diagnostic Trouble Code (DTC)
A: COMMUNICATION FOR INITIALIZING IMPOSSIBLE
NOTE:
•DTC is displayed in the sequence of the amount of counter numbers.
•When more than two DTCs are displayed, perform the diagnosis of top one.
DIAGNOSIS:
Subaru Select Monitor communication line is open or shorted.
TROUBLE SYMPTOM:
Not communicable with Subaru Select Monitor.
WIRING DIAGRAM:
10
A1B19
12345678
910111213141516
B40
DATA LINK CONNECTOR
i84BODY INTEGRATED UNIT
A:
B280B:
IGNITION RELAY
B40i84A:B280B:
LAN00148
567821943102422 23 25111213141526 27281617181920 21
1234567891011121314151617181920212223242526272829303132333435

LAN(diag)-40
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
LAN SYSTEM (DIAGNOSTICS)
F: DTC B0103 IGNITION POWER FAILURE
DTC DETECTING CONDITION:
IGN power supply circuit is open or shorted.
TROUBLE SYMPTOM:
Symptoms such as illuminating the malfunction indicator light or high speed CAN error display “Er HC” may
occur.
WIRING DIAGRAM:
LAN00150
BODY INTEGRATED UNIT
A1A24
MICRO COMPUTER
B1A8
B72
IGNITION SWITCH
1B
2
4
ACC
ACCOFF
IG
ON
B52B:
34128910 1112 13 14 15 16 17 18 19 20 21 22 23 24567
B280B:
B281C:
567821943102422 2325111213141526 27281617181920 21
5467821931022 23111213141524 25 26 2716171828 29192021 30
i84A:
1234567891011121314151617181920212223242526272829303132333435
12345678910 11 12 19 2013 14 15 16 17 18
i5A:
ACC POWER SUPPLY
B52i5A:B:
E
MAIN SBF-11
FB-28 NO.31
BATTERY
IG POWER SUPPLY
i84
B280B:
A:
B281C:
A21C9B22C8
EE
FB-37 NO.12
B72
134562
FUSE &RELAY BOX
Step Check Yes No
1CHECK FUSE.
1) Turn the ignition switch to OFF.
2) Remove the fuse (No. 12).
Is the fuse blown out? Replace the fuse
(No. 12). If the
replaced fuse has
blown out easily,
repair the short cir-
cuit of harness
between fuse (No.
12) and body inte-
grated unit.
Go to step 2.