EN(H4DOTC)(diag)-173
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
6
CHECK HARNESS BETWEEN ECM AND
FUEL INJECTOR.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from fuel injector
on faulty cylinders.
3) Turn the ignition switch to ON.
4) Measure the voltage between ECM and
chassis ground on faulty cylinders.
Connector & terminal
#1 (B137) No. 8 (+) — Chassis ground (–):
#2 (B137) No. 9 (+) — Chassis ground (–):
#3 (B137) No. 10 (+) — Chassis ground (–):
#4 (B137) No. 11 (+) — Chassis ground (–):
Is the voltage 10 V or more?
Repair the short
circuit to power in
the harness
between the ECM
and fuel injector.
Go to step 7.
7
CHECK FUEL INJECTOR.
1) Turn the ignition switch to OFF.
2) Measure the resistance between fuel injec-
tor terminals on faulty cylinder.
Terminals
No. 1 — No. 2:
Is the resistance less than 1
:? Replace the faulty
fuel injector. <Ref.
to FU(H4DOTC)-
38, Fuel Injector.>
Go to step 8.
8
CHECK INSTALLATION OF CAMSHAFT PO-
SITION SENSOR/CRANKSHAFT POSITION
SENSOR.
Is the camshaft position sensor
or crankshaft position sensor
loosely installed?
Tighten the cam-
shaft position sen-
sor or crankshaft
position sensor.
Go to step 9.
9
CHECK CRANK SPROCKET.
Remove the timing belt cover. <Ref. to
ME(H4DOTC)-46, REMOVAL, Timing Belt
Cover.>
Is the crank sprocket rusted or
does it have broken teeth?
Replace the crank
sprocket. <Ref. to
ME(H4DOTC)-57,
Crank Sprocket.>
Go to step 10.
10
CHECK INSTALLATION CONDITION OF
TIMING BELT.
Turn the crankshaft using ST, and align the
alignment mark on crank sprocket with align-
ment mark on cylinder block.
ST
499987500
CRANKSHAFT
SOCKET
Is the timing belt dislocated
from its proper position?
Repair the installa-
tion condition of
timing belt. <Ref. to
ME(H4DOTC)-47,
Timing Belt.>
Go to step 11.
11
CHECK FUEL LEVEL.
Is the fuel meter indication
higher than the “Lower” level?
Go to step 12.
Refill the fuel so
that fuel meter indi-
cation is higher
than the “Lower”
level. After replen-
ishing fuel, Go to
step 12.
12
CHECK STATUS OF MALFUNCTION INDI-
CATOR LIGHT.
1) Clear the memory using the Subaru Select
Monitor or general scan tool.
<Ref. to EN(H4DOTC)(diag)-52, Clear Memory
Mode.>
2) Start the engine, and drive the vehicle 10
minutes or more.
Does the malfunction indicator
light illuminate or blink?
Go to step 14.
Go to step 13.
Step
Check
Yes
No