Subaru XT 1988 Service Manual page 1069

AIR CONDITIONING SYSTEM
4-7
Blower Motor Diagnoses
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Blower motor inoperative
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Check two 15A fuses for blower relay.
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Fuse blown I I Fuse OK
Locate short-circuited spot and repair or replace Ground one of lead wires, blue (4 speed), blue/white
faulty parts.
(3 speed)' blue/yellow (2 speed), yellow/white (1 speed)
leading to blower switch.
Blower runs.
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Blower does not run.
Check ground circuit connection and lead wire con· Ground blue wire of blower motor.
nection. When no problem is found, replace blower
speed switch.
Blower runs.
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Blower does not run.
Check connection of resistor. When no problem is Connect 12-volt test light to green/white wire lead-
found, replace resistor. ing of blower motor.
Light ON
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Light OFF
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Check lead wire connection. When no problem is
found, replace blower motor.
(Ctd.)
47