Subaru SVX 1992 Manual page 1061

AUTOMATIC AIR CONDITIONING SYSTEM [T11.121 4-7
1 . CHECK OUTPUT SIGNALS FOR AUTO AMPLI-
FIER.
1) Remove auto amplifier .
2) Set to self-diagnosis mode "STEP [3j" .
3) Measure voltage between auto amplifier connector .
Connector fr Terminal/Specified voltage :
(i17) No . 3 +~ - No . 4 E)
Display shows 41 --* 44/Approx. 10 V
(i17) No . 4 +~ - No . 3 E)
Display shows 45 -s 41/Approx. 10 V
2 . CHECK HARNESS CONNECTOR BETWEEN
AUTO AMPLIFIER AND MODE DOOR MOTOR.
1) Disconnect auto amplifier and mode door motor
connector.
2) Measure resistance between auto amplifier and
mode door motor connector .
Connector fr Terminal/Specified resistance :
(i17) No. 3 - (HU2) No. 5/0 0
(i17) No. 4 - (HU2) No. 7/0 C1
a. Output voltage is produced only when mode door
motor is operating.
b. Since auto amplifier cyclically produces an output
of approximately 10 volts, analog circuit tester pointer
deflects between 0 and 5 volts.
O i o
m
O
a
C4-738
Fig . 257
3) Measure resistance between auto amplifier connec-
tor and body.
Connector ft Terminal/Specified resistance :
(i17) No. 3 - Body/1 Mid min .
(i17) No. 4 - Body/1 MQ min .
Fig. 258
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