2009 SUBARU TRIBECA seat heater

AC-47
Heater Duct
HVAC SYSTEM (HEATER, VENTILATOR AND A/C)
26.Heater Duct
A: REMOVAL
1. FRONT HEATER DUCT
1) Remove the instrument panel lower cover. to EI-36, REMOVAL, Instrument Panel Lower Cov-
er.>
2) Remove the catch and detach the front heater
duct (A).
2. REAR HEATER DUCT
1) Remove the heater cooling unit. REMOVAL, Heater and Cooling Unit.>
2) Remove the front seats. AL, Front Seat.>
3) Remove the front side sill cover.
4) Pull off the floor mat to remove the rear center
heater duct (A) and rear heater duct LH, RH (B).
B: INSTALLATION
Install in the reverse order of removal.
AC-01349
(A)
AC-01350
(A)
(B)

AC(diag)-8
Auto A/C Control Module I/O Signal
HVAC SYSTEM (AUTO A/C) (DIAGNOSTICS)
4. Auto A/C Control Module I/O Signal
A: ELECTRICAL SPECIFICATION
Te r m i n a l N o . D e s c r i p t i o n M e a s u r i n g c o n d i t i o n S p e c i f i c a t i o n
A1 Battery power supply Ignition switch: OFF Battery voltage
A2 ACC power supply Ignition switch: ACC Battery voltage
A3Mode door actuator position sig-
nal
Mode door: FACE position 4 V
Mode door: DEF position 1 V
A4Passenger’s side air mix door
actuator position signal
Air mix door: Maximum cool position 4 V
Air mix door: Maximum hot position 1 V
A5 In-vehicle sensor Ignition switch: ON Less than 5 V
A6 Sunload sensor Ignition switch: ON, With Sunload (No sunload: 0.8 V) 3 V
A7Driver’s seat heater temperature
sensorIgnition switch: ON Less than 5 V
A8 Sensor power supply Ignition switch: ON 5 V
A9 Ignition power supply Ignition switch: ON Battery voltage
A10 A/C cut signalIgnition switch: ON Battery voltage
When pressure SW is operating 0 V
A12Driver’s side air mix door actuator
position signal
Air mix door: Maximum cool position 4 V
Air mix door: Maximum hot position 1 V
A13 Evaporator sensor Ignition switch: ON Less than 5 V
A14Passenger’s seat heater tempera-
ture sensorIgnition switch: ON Less than 5 V
A15 Sensor ground Continuity to chassis ground 0 Ω
A16 Ground Continuity to chassis ground 0 Ω
B1 CAN communication (HI side) Ignition switch: ON Pulse signal *1
B2Blower motor voltage feedback
signal
Blower level: Manual Lo 7.6 V
Blower level: Manual M3 3.7 V
Blower level: Manual Hi Less than 1 V
B3Blower motor power MOS gate
control signalIgnition switch : ON, Blower switch : ON1 V — battery
voltage
B6 Magnet clutch signalTe m p e r a t u r e s e t t i n g : M a x i m u m C O O L , M O D E : M a n u a l
DEF, A/C: ONBattery voltage
AC-01334
10
20 19 18 17 16 15 14
13 12 11987654 321
1016 15 14 13 12 119
87654 321
B: B283
A: B282
232122242526

AC(diag)-9
Auto A/C Control Module I/O Signal
HVAC SYSTEM (AUTO A/C) (DIAGNOSTICS)
*1: Unable to measure the voltage for digital signal.
*2: Voltage immediately after switching FACE ⇔ DEF or maximum COOL ⇔ maximum HOT (when the damper door is operat-
ing.) for mode door and air mix door
*3: Voltage immediately after the operation for the seat heater (Always measure the voltage immediately after turning the seat
heater to ON because once reached to the target value, it switches to ON/OFF action.)
B: WIRING DIAGRAM
1. AIR CONDITIONER AUTO A/C MODEL

B7Mode door actuator power supply
(FACE)
When switching mode door from DEF → FACE
Battery voltage
— 2.5 V or more
*2
When switching mode door from FACE → DEF Less than 1 V *2
B8
Passenger’s side air mix door
actuator power supply (COOL
side)
When switching air mix door from HOT → COOL
Battery voltage
— 2.5 V or more
*2
When switching air mix door from COOL → HOT Less than 1 V *2
B9Driver’s side air mix door actuator
power supply (COOL side)
When switching air mix door from HOT → COOL
Battery voltage
— 2.5 V or more
*2
When switching air mix door from COOL → HOT Less than 1 V *2
B10 Inlet opening motor (FRESH side)FRESH Less than 1 V
RECIRC Battery voltage
B11 Driver’s seat heater Driver’s seat heater: ON (3 stages) Less than 1 V *3
B13 Passenger’s seat heater Passenger’s seat heater: ON (3 stages) Less than 1 V *3
B14 CAN communication (Lo side) Ignition switch: ON Pulse signal *1
B16 Blower motor relayBlower motor: Stopped Battery voltage
Blower motor: Operated Less than 1 V
B18Panel communication (transmitter
side)Ignition switch: ON Pulse signal *1
B19Panel communication (receiver
side)Ignition switch: ON Pulse signal *1
B20 Mode door (DEF) side
Mode: DEF ⇒ FACE Less than 1 V
Mode: FACE ⇒ DEFBattery voltage
— 2.5 V or more
B21 Passenger’s side air mix door
Air mix: Maximum HOT ⇒ maximum COOL Less than 1 V
Air mix: Maximum COOL ⇒ maximum HOTBattery voltage
— 2.5 V or more
B22 Driver’s side air mix door
Air mix: Maximum HOT ⇒ maximum COOL Less than 1 V
Air mix: Maximum COOL ⇒ maximum HOTBattery voltage
— 2.5 V or more
B23Inlet opening motor (RECIRC
side)
RECIRC Less than 1 V
FRESH Battery voltage
B24 Driver’s seat heater ground Continuity to chassis ground 0 Ω
B25 Passenger’s seat heater ground Continuity to chassis ground 0 Ω
Te r m i n a l N o . D e s c r i p t i o n M e a s u r i n g c o n d i t i o n S p e c i f i c a t i o n

AC(diag)-12
Diagnostic Chart for Self-diagnosis
HVAC SYSTEM (AUTO A/C) (DIAGNOSTICS)
2. SWITCH CHECK TABLE
Switch Display screen Switch Display screen
A/C switch (6) FAN switch (+) (4)
AU TO sw i t ch ( 1 ) FA N sw it ch ( –) (3 )
Air flow control switch (9)Driver’s side temperature con-
trol dial
Right rotation (11) Left rotation
(12)
FRESH/RECIRC (13)Passenger’s side temperature
control dial
Right rotation (5) Left rotation
(10)
Defroster switch (7) OFF switch (2)
Rear defogger switch (8) Driver’s seat heater switch (14)
Passenger’s seat heater
switch(15)
AC-01333
(7)(8)
(6)(1)
(13)(4)(3)
(9)
(2)
(15)(14)
(12)
(11)
(10)
(5)

AC(diag)-14
Diagnostic Chart for Self-diagnosis
HVAC SYSTEM (AUTO A/C) (DIAGNOSTICS)
4. SENSOR CHECK TABLE
NOTE:
When the sunload sensor check is performed indoors or in the shade, it could be diagnosed as having an
open circuit. Always check the sunload sensor with the sun shining on it.
*1: “AUTO” display does not blink when past malfunction occurred. Past malfunction means that abnormal signals were contin-
uously input for a certain time in the past.
*2: Present malfunction only is displayed for sunload sensor open circuit.
5. OPERATING MODE TABLE
*Same opening angle for both driver’s and passenger’s side
Display screen (Malfunction at
present) *1Sensor Trouble contents
21/AUTO BlinkIn-vehicle sensorOpen
–21/AUTO BlinkShort
22/AUTO Blink Ambient sensor Sensor trouble or communication malfunction
23/AUTO BlinkEvaporator sensorOpen
–23/AUTO BlinkShort
24/AUTO Blink Engine coolant temperature sensor Sensor trouble or communication malfunction
25 BlinkSunload sensorOpen *2
–25/AUTO BlinkShort
26/AUTO BlinkDriver's side air mix door actuator
potentiometer
COOL
27/AUTO BlinkHOT
–26/AUTO BlinkPassenger’s side air mix door actua-
tor potentiometer
COOL
–27/AUTO BlinkHOT
28/AUTO BlinkMode door actuator potentiometerFA C E
29/AUTO BlinkDEF
41/AUTO BlinkSeat heater thermistor (Driver’s
side)
Open
–41/AUTO BlinkShort
42/AUTO BlinkSeat heater thermistor (Passenger’s
side)
Open
–42/AUTO BlinkShort
20 Blink When all conditions are normal
Display screenFRESH/RECIRC
doorMode door Air mix door* Blower fanA/C compressor (Mag-
net clutch)
31 FRESH FACE Maximum cool LO OFF
32 RECIRC FACE Maximum cool LO ON
33 RECIRC FACE Maximum cool M1 ON
34 FRESH B/L 50% M1 ON
35 FRESH HEAT 50% M1 ON
36 FRESH HEAT Maximum hot M3 ON
37 FRESH D/H Maximum hot M3 ON
38 FRESH DEF Maximum hot HI ON

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

SE-2
General Description
SEATS
1. General Description
A: COMPONENT
1. FRONT SEAT (DRIVER’S SEAT)
(1) Backrest cover (11) Rear leg cover inside (21) Power seat switch unit
(2) Backrest pad (12) Seat cushion cover (22) Seat heater unit
(3) Backrest frame ASSY (13) Seat cushion pad (23) Lumber support lever
(4) Headrest ASSY (14) Seat cushion frame ASSY (24) Slide rail cover
(5) Headrest lock bushing (15) Rear leg cover outside
(6) Side airbag module (16) Power seat switch knobTightening torque: N·m (kgf-m, ft-lb)
(7) Cover frame (17) Seat side cover outsideT1: 6 (0.61, 4.43)
(8) Backrest back cover (18) Hinge inner cover LHT2: 17.6 (1.79, 12.7)
(9) Seat side cover inside (19) Inner seat belt ASSYT3: 52 (5.30, 37.6)
(10) Hinge inner cover RH (20) Slide rail ASSYT4: 53 (5.40, 38.3)
(1)
(2)
(23)
(22)
(3)
(8)
(4)
(5)
(6)(9)
(10)(11)
(12)
(13)
(14)
(15)
(17)
(21)(19)
(18)
T4
T4
T2
T3
T1
T2
T3
(7)
(24)
(24)
T4
(16)
(20)
SE-00580

SE-3
General Description
SEATS
2. FRONT SEAT (DRIVER’S SEAT)
(1) Backrest cover (10) Hinge inner cover LH (19) Power seat switch unit
(2) Backrest pad (11) Rear leg cover inside (20) Inner seat belt ASSY
(3) Backrest frame ASSY (12) Seat cushion cover (21) Slide rail cover
(4) Headrest ASSY (13) Seat heater unit
(5) Headrest lock bushing (14) Seat cushion pad & frame ASSYTightening torque: N·m (kgf-m, ft-lb)
(6) Side airbag module (15) Rear leg cover outsideT1: 6 (0.61, 4.43)
(7) Cover frame (16) Hinge inner cover RHT2: 17.6 (1.79, 12.7)
(8) Backrest back cover (17) Seat side cover outsideT3: 52 (5.30, 37.6)
(9) Seat side cover inside (18) Power seat switch knobT4: 53 (5.40, 38.3)
T3
T3
(1)
(2)
(3)
(8)
(4)
(5)
(6)
(9)
(10)
(12)
T4
T2
T2
T1
T4
(7)
(11)
(15)
(14)
(21)
(20)
(16)
(13)
(19)
(18)
(17)
SE-00581