Subaru 2009 IMPREZA Service Manual page 1313

Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
B: DTC P0016 CRANKSHAFT POSITION - CAMSHAFT POSITION CORRELATION
(BANK1)
DTC DETECTING CONDITION:
• Detected when two consecutive driving cycles with fault occur.
• GENERAL DESCRIPTION <Ref. to GD(H4DOTC)-12, DTC P0016 CRANKSHAFT POSITION - CAM-
SHAFT POSITION CORRELATION (BANK1), Diagnostic Trouble Code (DTC) Detecting Criteria.>
TROUBLE SYMPTOM:
• Engine stalls.
• Improper idling
CAUTION:
After servicing or replacing faulty parts, perform Clear Memory Mode <Ref. to EN(H4DOTC)(diag)-54,
OPERATION, Clear Memory Mode.>, and Inspection Mode <Ref. to EN(H4DOTC)(diag)-43, PROCE-
DURE, Inspection Mode.>.
Step
1 CHECK CURRENT DATA.
1) Start the engine and let it idle.
2) Measure the AVCS system operating angle
and oil flow control solenoid valve duty output
using Subaru Select Monitor or general scan
tool.
NOTE:
• Subaru Select Monitor
For detailed operation procedures, refer to
"READ CURRENT DATA FOR ENGINE". <Ref.
to EN(H4DOTC)(diag)-34, Subaru Select Moni-
tor.>
• General scan tool
For detailed operation procedures, refer to the
general scan tool operation manual.
Check
Is the AVCS system operating
angle approx. 0°, and oil flow
control solenoid valve duty out-
put approx. 10%?
EN(H4DOTC)(diag)-92
Yes No
Perform the follow- Check the follow-
ing procedures, ing item and repair
and clean the oil or replace if neces-
routing. sary.
Replace the • Oil pipe (clog)
engine oil and idle • Oil flow control
the engine for 5 solenoid valve
minutes, and then (clog or dirt of oil
replace the oil filter routing, setting of
and engine oil. spring)
<Ref. to • Intake camshaft
LU(H4SO)-9, (dirt, damage of
REPLACEMENT, camshaft)
Engine Oil.> <Ref. • Timing belt
to LU(H4SO)-21, (matching of timing
Engine Oil Filter.> mark)