Subaru 2009 IMPREZA Service Manual page 369

LUBRICATION
B: INSPECTION
Step
1 CHECK COMBINATION METER.
1) Turn the ignition switch to ON (engine OFF).
2) Check other warning lights.
2 CHECK HARNESS CONNECTOR BETWEEN
THE COMBINATION METER AND THE OIL
PRESSURE SWITCH.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from oil pressure
switch.
3) Turn the ignition switch to ON.
4) Measure the voltage of harness between oil
pressure switch connector and chassis ground.
Connector & terminal
(E11) No. 1 (+) — Chassis ground (–):
3 CHECK COMBINATION METER.
1) Turn the ignition switch to OFF.
2) Remove the combination meter.
3) Measure the resistance of combination
meter.
Terminals
(i10) No. 2 — No. 19:
Oil Pressure System
Check
Does the warning light illumi-
nate?
Is the voltage 10 V or more?
Is the resistance less than 10 ? Repair the harness
LU(H4SO)-8
Yes No
Go to step 2. Repair or replace
the combination
meter. <Ref. to IDI-
4, INSPECTION,
Combination Meter
System.>
Replace the oil Go to step 3.
pressure switch.
Repair or replace
and connector. the combination
meter. <Ref. to IDI-
NOTE:
4, INSPECTION,
In this case, repair
Combination Meter
the following item:
System.>
• Open circuit of
harness between
combination meter
and oil pressure
switch
• Poor contact of
combination meter
connector
• Poor contact of
oil pressure switch
connector
• Poor contact of
coupling connector