2009 SUBARU TRIBECA clutch

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)-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)-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)-23
Diagnostics for A/C System Malfunction
HVAC SYSTEM (AUTO A/C) (DIAGNOSTICS)
12 CHECK THE MAGNET CLUTCH
1) Stop the engine, and turn the AUTO switch
to OFF.
2) Disconnect the harness connector of mag-
net clutch.
Connector & terminal
(F24) No. 2 — Chassis ground:
3) Connect the battery positive (+) terminal to
terminal No. 1 of the magnet clutch, and nega-
tive (–) terminal to the compressor body.
Is the magnetic clutch operat-
ing?
Magnetic clutch is
normal.
Replace the com-
pressor. AC-33, REMOVAL,
Compressor.>
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

TC-2
General Description
TRANSFER CASE
1. General Description
A: NOTE
For inspection, refer to the 5AT section.

TC-3
Transfer Clutch
TRANSFER CASE
2. Transfer Clutch
A: NOTE
For removal, installation and inspection, refer to
“5AT” section.

TC-8
Transfer Clutch Pressure Test
TRANSFER CASE
7. Transfer Clutch Pressure
Test
A: NOTE
For inspection, refer to the 5AT section.