(Yaw Rate (B380) No - Subaru IMPREZA GD 2007 Series Manual

asieps_tobira_IM_US.book 8 ページ ２０１２年１月１７日 火曜日 午後３時４８分
COOLING
Step
7 CHECK POWER SUPPLY TO MAIN FAN RE-
LAY 1.
1) Turn the ignition switch to OFF.
2) Remove the main fan relay 1 from A/C relay
holder.
3) Measure the voltage between main fan relay
1 terminal and chassis ground.
Connector & terminal
(F27) No. 31 (+) — Chassis ground (–):
8 CHECK POWER SUPPLY TO MAIN FAN RE-
LAY 1.
1) Turn the ignition switch to ON.
2) Measure the voltage between main fan relay
1 terminal and chassis ground.
Connector & terminal
(F27) No. 34 (+) — 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. 1 (+) — Chassis ground (–):
11 CHECK FUSE.
1) Turn the ignition switch to OFF.
2) Remove the fuse No. 18 from the joint box.
3) Check the condition of fuse.
12 CHECK MAIN FAN RELAY 1.
1) Turn the ignition switch to OFF.
2) Remove the main fan relay 1.
3) Measure the resistance of main fan relay 1.
Terminals
No. 30 — No. 31:
13 CHECK MAIN FAN RELAY 1.
1) Connect the battery to terminals No. 34 and
No. 32 of the main fan relay 1.
2) Measure the resistance of main fan relay 1.
Terminals
No. 30 — No. 31:
14 CHECK HARNESS BETWEEN MAIN FAN
RELAY 1 TERMINAL AND MAIN FAN MO-
TOR CONNECTOR.
Measure the resistance of harness between
main fan motor connector and main fan relay 1
terminal.
Connector & terminal
(F17) No. 1 — (F27) No. 30:
Radiator Main 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)-8
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 open Repair the open
circuit of harness circuit of harness
between 20 A fuse between main fuse
and main fan relay box connector and
terminal. 20 A fuse terminal.
Replace the fuse. Repair the open
circuit of harness
between main fan
relay 1 and ignition
switch.
Go to step 13. Replace the main
fan relay 1.
Replace the main
fan relay 1.
Repair the open
circuit of harness
between main fan
motor connector
and main fan relay
1 terminal.