Subaru Impreza 3 / Impreza WRX / Impreza WRX STI. Service manual — part 608
AC(diag)-37
Diagnostics with Phenomenon
HVAC SYSTEM (AUTO A/C) (DIAGNOSTICS)
9. Diagnostics with Phenomenon
A: INSPECTION
Symptoms
Faulty parts
A/C system fails to operate.
• Fuse (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
• ECM
Fuse is blown out.
• Fuse (F/B No. 7, 22, 31)
• Connector (Poor contact)
Illumination cannot dim.
• Fuse (F/B No. 7, 22, 31)
• Connector (Poor contact)
• Auto A/C control module
Blower fan does not rotate or fan speed cannot
be controlled.
• Fuse (F/B No. 7, 22, 31)
• Connector (Poor contact)
• Ground
• Auto A/C control module
• Blower fan motor
• Blower fan relay
• Power transistor
Unable to switch suction vents.
• Connector (Poor contact)
• Auto A/C control module
• Intake door actuator
Unable to switch vents.
• Connector (Poor contact)
• Auto A/C control module
• Mode door actuator
Compartment temperature does not rise.
(Warm air does not come out.)
• 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
Compartment temperature does not lower.
(Cold air does not come out.)
• 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
Compartment temperature is higher or lower
than setting temperature.
• Auto A/C control module
• Air mix door actuator
• In-vehicle sensor, ambient sensor, evaporator sensor and sunload sensor
• In-vehicle sensor aspirator hose
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
Radiator fan does not rotate during A/C opera-
tion.
• Radiator fan motor
• Radiator fan relay
• ECM
AC(diag)-38
Diagnostics with Phenomenon
HVAC SYSTEM (AUTO A/C) (DIAGNOSTICS)
AIRBAG SYSTEM
AB
Page
General Description . . . . . . . . . . . . . . . . . . . . ...2
Airbag Connector . . . . . . . . . . . . . . . . . . . . . ...8
Inspection Locations after a Collision . . . . . . . . . . . . . ...12
Driver’s Airbag Module . . . . . . . . . . . . . . . . . . . .15
Passenger’s Airbag Module . . . . . . . . . . . . . . . . . .16
Side Airbag Module . . . . . . . . . . . . . . . . . . . . ..17
Curtain Airbag Module . . . . . . . . . . . . . . . . . . . .19
Airbag Control Module . . . . . . . . . . . . . . . . . . . .21
Front Sub Sensor . . . . . . . . . . . . . . . . . . . . . .22
Side Airbag Sensor . . . . . . . . . . . . . . . . . . . . ..23
Curtain Airbag Sensor . . . . . . . . . . . . . . . . . . . ..24
Satellite Safing Sensor . . . . . . . . . . . . . . . . . . . .25
Roll Connector . . . . . . . . . . . . . . . . . . . . . . .26
AB-2
General Description
AIRBAG SYSTEM
1. General Description
A: COMPONENT
(1)
Curtain airbag module LH
(9)
Front sub sensor LH
(17) Side airbag sensor RH
(2)
Curtain airbag module RH
(10) Front airbag harness (integrated
with bulkhead wiring harness)
(18) Seat belt pretensioner RH
(3)
Side airbag sensor LH
(11) Front sub sensor RH
(19) Buckle switch RH
(4)
Side airbag module LH
(12) Airbag module ASSY (passenger)
(20) Curtain airbag sensor RH
(5)
Airbag rear harness LH (inte-
grated with rear wiring harness)
(13) Side airbag module RH
(21) Satellite safing sensor
(6)
Airbag module ASSY (driver)
(14) Occupant detection control mod-
ule
(22) Seat belt pretensioner LH
(7)
Combination switch ASSY with roll
connector
(15) Belt tension sensor
(23) Airbag rear harness RH (inte-
grated with rear wiring harness)
(8)
Airbag control module
(16) Occupant detection sensor
(24) Curtain airbag sensor LH
AB-02007
(1)
(2)
(3)
(4)
(6) (7)
(9)
(8)
(22) (21)
(20)
(18)
(19)
(11)
(17)
(14)
(5)
(10)
(24)
(16) (15)
(12)
(13)
(23)
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