Control Switches - Subaru Impreza 2002 Service Manual

5. CONTROL SWITCHES

Start and warm up the engine completely.
1) Inspection using switches.
No. Point to check
1 Fan speed control dial
Fan speed control dial
2 and temperature con-
trol dial
3 Air flow control dial
FRESH/RECIRC
4
switch
2) Compressor operation inspection
No. Point to check
1 Compressor
3) Illumination control inspection
No. Point to check
1 Illumination
GENERAL DESCRIPTION
Switch operation
OFF position
Fan speed control dial 1st → 2nd → 3rd → 4th
A. Fan speed control dial auto position.
B. Temperature control dial maximum cold posi-
tion
C. Turn the temperature control dial from maxi-
mum cold position to maximum hot position grad-
ually.
D. Temperature control dial maximum hot posi-
tion
Air flow control dial VENT → BI-LEVEL → HEAT
→ DEF/HEAT → DEF
FRESH/RECIRC switch ON
Switch operation
A. A/C switch ON
B. Fan speed control dial 1st-4th
Switch operation
Lighting switch ON
HVAC SYSTEM (AUTO A/C) (DIAGNOSTICS)
A/C switch LED goes out.
• Fan speed: OFF
• Compressor: OFF
Fan speed changes 1st → 2nd → 3rd → 4th
• Outlet air: Cool
• Fan speed: 4th
• Compressor: ON
• Outlet air: Cool → Hot
• Fan speed: AUTO
• Compressor: ON
• Outlet air: Hot
• Fan speed: 4th
• Compressor: ON
Air flow outlet changes from VENT → BI-
LEVEL → HEAT → DEF/HEAT → DEF.
Changes from RECIRC → FRESH, or FRESH
→ RECIRC.
Compressor: ON
Illumination light illuminates.
AC-5
Judgement standard
Judgement standard
Judgement standard