Subaru Legacy 2004 Service Manual page 3429

Step
9 CHECK AUTO A/C CONTROL MODULE
GROUND CIRCUIT.
Measure the resistance in harness between
auto A/C control module and chassis ground.
Connector & terminal
(B282) No. 14, No. 16 — Chassis ground:
10 CHECK COMMUNICATION CIRCUIT.
Measure the resistance in harness between A/C
control panel and auto A/C control module.
Connector & terminal
(i88) No. 3 — (B283) No. 16:
(i88) No. 7 — (B283) No. 15:
11 CHECK POOR CONTACT.
Check poor contact in auto A/C control module
connector.
Diagnostics for A/C System Malfunction
Is the resistance less than 5
#?
Is the resistance less than1 #? Go to step 11.
Is there poor contact in con-
nector?
AC(diag)-17
HVAC SYSTEM (AUTO A/C) (DIAGNOSTICS)
Check Yes
Go to step 10.
Repair the con-
nector.
No
Repair the har-
ness for ground
line.
Repair the har-
ness.
Replace the auto
A/C control mod-
ule.