(B381) No - Subaru IMPREZA GD 2007 Series Manual

asieps_tobira_IM_US.book 13 ページ ２０１２年１月１７日 火曜日 午後３時４８分
Step
7 CHECK POWER SUPPLY TO SUB FAN RE-
LAY 1.
1) Turn the ignition switch to OFF.
2) Remove the sub fan relay 1 from the A/C
relay holder.
3) Measure the voltage between the sub fan
relay 1 terminal and chassis ground.
Connector & terminal
(F27) No. 8 (+) — Chassis ground (–):
8 CHECK POWER SUPPLY TO SUB FAN RE-
LAY 1.
1) Turn the ignition switch to ON.
2) Measure the voltage between the sub fan
relay 1 terminal and chassis ground.
Connector & terminal
(F27) No. 5 (+) — Chassis ground (–):
9 CHECK 20 A FUSE.
1) Remove the 20 A fuse from the A/C relay
holder.
2) Check the condition of fuse.
10 CHECK POWER SUPPLY TO A/C RELAY
HOLDER 20 A FUSE TERMINAL.
Measure the voltage of harness between A/C
relay holder 20 A fuse terminal and chassis
ground.
Connector & terminal
(F27) No. 3 (+) — Chassis ground (–):
11 CHECK FUSE.
1) Turn the ignition switch to OFF.
2) Remove the fuse No. 17 from the joint box.
3) Check the condition of fuse.
12 CHECK SUB FAN RELAY 1.
1) Turn the ignition switch to OFF.
2) Remove the sub fan relay 1.
3) Measure the resistance of the sub fan relay
1.
Terminals
No. 8 — No. 9:
13 CHECK SUB FAN RELAY 1.
1) Connect battery to the terminals No. 5 and
No. 7 of sub fan relay 1.
2) Measure the resistance of the sub fan relay.
Terminals
No. 8 — No. 9:
14 CHECK HARNESS BETWEEN SUB FAN RE-
LAY 1 TERMINAL AND SUB FAN MOTOR
CONNECTOR.
Measure the resistance of harness between
sub fan motor connector and sub fan relay 1 ter-
minal.
Connector & terminal
(F16) No. 1 — (F27) No. 9:
Radiator Sub Fan System
Check
Is the voltage 10 V or more?
Is the voltage 10 V or more?
Is the fuse blown out?
Is the voltage 10 V or more?
Is the fuse blown out?
Is the resistance 1 MΩ or
more?
Is the resistance less than 1 Ω? Go to step 14.
Is the resistance less than 1 Ω? Go to step 15.
CO(H4SO)-13
COOLING
Yes No
Go to step 8. Go to step 9.
Go to step 12. Go to step 11.
Replace the fuse. Go to step 10.
Repair the harness Repair the open
circuit between 20 circuit of harness
A fuse and sub fan between sub fuse
relay terminal. box connector and
20 A fuse terminal.
Replace the fuse. Repair the open
circuit of harness
between sub fan
relay 1 and ignition
switch.
Go to step 13. Replace the sub
fan relay 1.
Replace the sub
fan relay 1.
Repair the open
circuit of harness
between sub fan
motor connector
and sub fan relay 1
terminal.