Subaru B9 TRIBECA WX 2007, Руководство пользователя

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AC(diag)-16
Diagnostics for A/C System Malfunction
HVAC SYSTEM (AUTO A/C) (DIAGNOSTICS)
Step Check Yes No
1 CHECK FUSE.
1) Turn the ignition switch to OFF.
2) Remove the fuse No. 7 from main fuse box.
3) Check the condition of fuse.
Is the fuse blown out? Replace the fuse. Go to step 2 .
2 CHECK FUSE.
1) Turn the ignition switch to OFF.
2) Remove the fuse No. 22 and No. 31 from
fuse & relay box.
3) Check the condition of fuse.
Is the fuse blown out? Replace the fuse. Go to step 3 .
3 CHECK A/C CONTROL PANEL POWER CIR-
CUIT.
Measure the voltage between A/C control panel
harness connector terminal and chassis ground
after turning the ignition switch to ON.
Connector & terminal
(i88) No. 1 (+) — Chassis ground (–):
Is the voltage more than 10 V? Go to step
4
. Check for open or
short circuit in the
harness between
A/C control panel
and fuse.
4 CHECK A/C CONTROL PANEL GROUND
POWER CIRCUIT.
Measure the resistance of harness between A/
C control panel and chassis ground after turn-
ing the ignition switch to OFF.
Connector & terminal
(i88) No. 5 — Chassis ground:
Is the resistance less than 10
Ω ?
Go to step
5
. Repair the harness
for ground line.
5 CHECK AUTO A/C CONTROL MODULE
POWER CIRCUIT.
Measure the voltage between auto A/C control
module connector terminal and chassis ground
after turning the ignition switch to OFF.
Connector & terminal
(B282) No. 1 (+) — Chassis ground (–):
Is the voltage more than 10 V? Go to step
6
. Check open or
short circuit of har-
ness between auto
A/C control module
and fuse.
6 CHECK AUTO A/C CONTROL MODULE
POWER CIRCUIT.
Measure the voltage between auto A/C control
module connector terminal and chassis ground
after turning the ignition switch to ACC.
Connector & terminal
(B282) No. 2 (+) — Chassis ground (–):
Is the voltage more than 10 V? Go to step
7
. Check open or
short circuit of har-
ness between auto
A/C control module
and fuse.
7 CHECK AUTO A/C CONTROL MODULE
POWER CIRCUIT.
Measure the voltage between auto A/C control
module connector terminal and chassis ground
after turning the ignition switch to ON.
Connector & terminal
(B282) No. 9 (+) — Chassis ground (–):
Is the voltage more than 10 V? Go to step
8
. Check open or
short circuit of har-
ness between auto
A/C control module
and fuse.
8 CHECK AUTO A/C CONTROL MODULE
GROUND CIRCUIT.
Measure the resistance of harness between
auto A/C control module and chassis ground.
Connector & terminal
(B282) No. 16 — Chassis ground:
Is the resistance less than 5 Ω ? Go to step 9 . Repair the harness
for ground line.
9 CHECK COMMUNICATION CIRCUIT.
Measure the resistance of harness between A/
C control panel and auto A/C control module.
Connector & terminal
(i88) No. 3 — (B283) No. 19:
(i88) No. 7 — (B283) No. 18:
Is the resistance less than 1
Ω
? Go to step
10
. Repair the har-
ness.
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