Subaru IMPREZA 2002 Service Manual page 222

RADIATOR MAIN FAN SYSTEM
COOLING
Yes
30 to step 26.
30 to step 27.
30 to step 28.
Go to step 29.
Repair poor con-
tact connector.
Step
25 CHECK MAIN FAN RELAYS.
1)Turn the ignition switch to OFF.
2)Remove the main fan relay2.
3)Measure the resistance of main fan relay2.
Terminal
NO. 23
-
NO.
24:
2 6 CHECK MAIN FAN RELAYS.
1)Connect the battery to terminals No. 21 and
No. 22 of main fan relayl.
2)Measure the resistance of main fan relay2.
Terminal
NO. 23
-
NO.
24:
27
CHECK HARNESS BETWEEN MAIN FAN
RELAY2 TERMINAL AND MAIN FAN MOTOR
CONNECTOR.
Measure the resistance of harness between
main fan motor connector and main fan relay2
terminal.
Connector & terminal
(F17) NO. 2
-
(F30) NO. 24:
28
CHECK HARNESS BETWEEN MAIN FAN
RELAY2 AND ECM.
1)Turn the ignition switch to OFF.
2)Disconnect the connector from ECM.
3)Measure the resistance of harness between
main fan relay2 connector and ECM connector
Connector & terminal
(F30) NO. 22
-
(8134)
NO.
28:
29 CHECK POOR CONTACT.
Check poor contact in connector between main
fan and ECM.
No
Replace the main
fan relay2.
Replace the main
fan relay2.
Repair the open
circuit in harness
between main fan
motor connector
and main fan
relay2 terminal.
Repair the open
circuit in harness
between main fan
relay2 and ECM.
Contact with SOA
service.
NOTE:
Check
Is the resistance more than 1
MQ?
Is the resistance less than 1
R?
Is the resistance less than 1
R?
Is the resistance less than
1
R?
Is there poor contact in con-
nector between main fan motor
and ECM?
Inspection by SOA service is required, because
probable cause is deterioration of multiple parts.
CO-16