Subaru 1600 Service Manual page 592

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HEATING, VENTILATING AND AIR-CONDITIONING SYSTEM
4) Compressor Clutch Diagnoses
Compressor clutch is not engaged.
Check 20A fuse for blower relay. 15 A fuse be·
tween ignition switch and blower relay. and
20A fuse for condenser fan.
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Fuse blown.
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Fuse OK
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Locate short·circuited spot. and repair or replace Connect lZ·volt test light to compressor clutch lead
damaged parts.
wire. Ground the other end of test light.
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Light ON
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Light OFF
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Check lead wire and ground wire of compressor clutch
Connect 12·volt test light to red/green wire of relay.
for connection. When there is nothing wrong with
Ground the other end of test light.
them. replace compressor clutch.
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Light ON
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Light OFF
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Replace air conditioner relay.
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Connect l2·Yolt test light to red/white wire of water
temperature switch.
Ground the other end of test light.
(Automatic transmission vehicle only)
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Light ON
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Light OFF
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Check connection of wire.
Connect l2·volt test light to black/yellow wire to low
Check the connector.
pressure switch.
(Automatic transmission vehicle)
Ground the other end of test light.
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Light ON
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Light OFF
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Check lead wire connection. Connect 12·volt test light to Green/white wire of
When no problem is found. replace low pressure micro switch.
switch. Ground the other end of test light.
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Light ON
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Light OFF
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Check lead wire connection. Check wire discontinuity on the side of electric
When no problem is found. replace micro switch.
power source.
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