2009 SUBARU TRIBECA wiring

AC-51
General Diagnostic Table
HVAC SYSTEM (HEATER, VENTILATOR AND A/C)
Air does not come out of the rear A/C.
Rear cooler blower
Rear cooler blower resistor
Rear cooler switch
Wiring harness
Air does not come out of the rear A/C.
Air conditioner switch
Compressor
Rear cooler switch
Rear cooler expansion valve
Symptom Repair order

AC(diag)-3
General Description
HVAC SYSTEM (AUTO A/C) (DIAGNOSTICS)
2. General Description
A: CAUTION
1) Never connect the battery in reverse polarity.
•Auto A/C control module may be destroyed in-
stantly.
2) Do not disconnect the battery terminals while the
engine is running.
•A large counter electromotive force will be gener-
ated in the generator, and this voltage may damage
electronic parts such as auto A/C control module
etc.
3) Before disconnecting the connectors of each
sensor and the auto A/C control module, be sure to
turn the ignition switch to OFF.
•Auto A/C control module may be damaged.
4) Every A/C-related part is a precision part. Do not
drop them.
5) Airbag system wiring harness is routed near the
A/C control panel and junction box.
CAUTION:
•For airbag system, yellow-colored wiring har-
ness and connectors are all used. Do not use
the electrical test equipment on these circuits.
•Be careful not to damage the airbag system
wiring harness when servicing the A/C control
panel and junction box.
B: INSPECTION
Before performing the diagnosis, check the follow-
ing items which might affect A/C system problems.
1. BATTERY
1) Measure the battery voltage and specific gravity
of electrolyte.
Standard voltage: 12 V
Specific gravity: 1.260 or more
2) Check the condition of the fuses for A/C system
power supply and other fuses.
3) Check the condition of harness and harness
connector connections.
2. ASPIRATOR HOSE
1) Turn the ignition switch to ON, and press the A/
C switch.
2) Turn the temperature control dial to maximum
hot position.
3) Turn the air flow control dial to “DEF” position.
4) Turn the fan speed control dial to 4th position.
5) Put a strip of paper close to the front side of in-
vehicle sensor suction port (A) located in the driv-
er’s side console side panel, and check that air is
being sucked into the port by seeing the paper
moving towards the port.
NOTE:
Be careful not to let the paper get sucked into the
port.
6) If the paper does not move at all, remove the
driver’s side console side panel MOVAL, Center Console.> and check for improper
connection of the aspirator hose, in-vehicle sensor
and heater unit, and repair them if necessary.
3. A/C LINE
Check the connection for A/C line (A) and lower
side high-pressure pipe.
AC-01323
AC-01324
(A)

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)-15
Diagnostics for A/C System Malfunction
HVAC SYSTEM (AUTO A/C) (DIAGNOSTICS)
6. Diagnostics for A/C System Malfunction
A: A/C OR SELF-DIAGNOSIS SYSTEMS DOES NOT OPERATE
TROUBLE SYMPTOM:
•Set temperature is not indicated on the display, switch LEDs are faulty and switches do not operate.
•Self-diagnosis system does not operate.
WIRING DIAGRAM:
AC-01335
A1A9A2A16
B282A:B283B:
M/B NO. 7
F/B NO. 22
F/B NO. 31
MAIN SBFSBF-6
B282
12345678910 11 12 13 14 15 16
A:
E
ACC
i88
1
5
B18B19
37
101
1
i97
i3
B38
1234 5678910 11 12 13 14 15 16 17 18 19 20
B38
123456789101112
i97
12345678
i88
IGNITIONSWITCHBATTERY
AUTO A/C CONTROL MODULE
A/C CONTROL PANEL
JOINTCONNECTOR
7
B283B:
1234567891014151617181920212223111213242526

AC(diag)-18
Diagnostics for A/C System Malfunction
HVAC SYSTEM (AUTO A/C) (DIAGNOSTICS)
B: BLOWER MOTOR DOES NOT ROTATE.
TROUBLE SYMPTOM:
•Blower motor does not rotate.
•Blower motor does not rotate in “HI”.
WIRING DIAGRAM:
AC-01336
B2B3B16
B419
B87
B86
MB-33 FUSE NO. 15
F/B NO. 22
SBF-3MAIN SBF
SBF-6
532
1235
21
B87B86
3412
B283B:
E
M
3
12
BLOWER MOTOR
AUTO A/C CONTROL MODULE
BATTERY
IGNITIONSWITCHBLOWER MOTORRELAY
POWERTRANSISTOR
B283
345678910
16 17 18 19 20
121112132425262122231415
B:B419
12345678121314151610119

AC(diag)-20
Diagnostics for A/C System Malfunction
HVAC SYSTEM (AUTO A/C) (DIAGNOSTICS)
C: COMPARTMENT TEMPERATURE DOES NOT CHANGE, OR A/C SYSTEM
DOES NOT RESPOND PROMPTLY.
WIRING DIAGRAM:
AC-01337
MAIN SBFSBF-6F/B NO.22
B360
F109
B143B:
F37A:
F35C:
1
9
F24
1
B361
F108
B136C:ECM
B283B:
B282A:
F27
B10
14
9
2830
2931
EE
C3C7
A4B13
43
12
C9
C33C24
A10B6
AUTO A/CCONTROLMODULE
MAGNETCLUTCH
MAIN FUSE BOX
THROUGH JOINTCONNECTORTHROUGH JOINTCONNECTOR
IGNITION SWITCHBATTERY
PRESSURESWITCH
A/C RELAY
B282B10 A:
B143
B360
F109
F108B:F37A:
F35F27C:
12345678910 11 12 13 14 15 16
1234 5678910 11 12 13 14 15 16 17 18 19 20
1234567891011122314
234 567891112 13 14 17 18 19 201101516
B361
1234567891011121314
123 8910411 12 13 14 15 165671718
12389104111213 1415165671236
7
45
131415
11
3031
1617891012
2627
18 192928222320 21
24 25
3412 8910 1112 13 14 15 16 17 18 19 20 21 22 23 24567
B136C:
1289563410 11 121920 2129 3031
13 14 15161727281822 2324 25 267
32 3334 35
B283
345678910
16 17 18 19 20
121112132425262122231415
B:

AC(diag)-24
Diagnostic Procedure for Actuators
HVAC SYSTEM (AUTO A/C) (DIAGNOSTICS)
7. Diagnostic Procedure for Actuators
A: INTAKE DOOR ACTUATOR
TROUBLE SYMPTOM:
FRESH/RECIRC mode is not changed.
WIRING DIAGRAM:
AC-01338
B91
MAIN SBFSBF-6F/B NO.22
7
31
B283
B23B10
B:
B91
1234567
AUTO A/CCONTROL MODULE
INTAKE DOORACTUATOR
IGNITIONSWITCHBATTERY
B283B:
1234567891014151617181920212223111213242526

AC(diag)-26
Diagnostic Procedure for Actuators
HVAC SYSTEM (AUTO A/C) (DIAGNOSTICS)
B: MODE DOOR ACTUATOR
TROUBLE SYMPTOM:
Air flow outlet is not changed.
WIRING DIAGRAM:
AC-01339
B77
3412 891011 12 13 14 15 16567
B282A:
B283B282
B77
B20
176
A15B7
B:A:
53
A8A3
12345
MODE DOOR ACTUATOR
AUTO A/CCONTROL MODULE
B283B:
1234567891014151617181920212223111213242526