11-125-12

ATTENTION:
GENERAL MANAGER
PARTS MANAGER
CLAIMS PERSONNEL
SERVICE MANAGER
q
q
q
q
IMPORTANT - All
Service Personnel
Should Read and
Initial in the boxes
provided, right.
SERVICE BULLETIN
APPLICABILITY:	2012 and 13MY Impreza and XV Crosstrek™ NUMBER:
Models Equipped With FB Engine
DATE:
11-125-12
12/03/12
SUBJECT:	DTCs P0365, P0366, P0390 and P0391
Misfire DTCs P0301, P0302, P0303 and P0304
INTRODUCTION
This Service Bulletin will provide an inspection and repair procedure for EXHAUST
camshaft position and / or misfire-related DTCs for FB engine-equipped 2012 and later MY
Impreza and XV Crosstrek models with FB engines. The camshaft position sensor clearance
may be out of specification causing these condition(s) and one or more of the DTCs to set. In
addition to a Check Engine Light coming on, there may or may not be customer concerns of
rough idle, extended cranking or no start.
NOTE: DTC P0366 and P0391 are not applicable to 2012MY vehicles.
PART INFORMATION
•
Shim kit, p.n. 10130AA060, contains 8 cam position sensor shims, 0.1 to 0.8mm
in thickness.
•
Camshaft position sensor o-ring, p.n. 13099AA050 (one time use item).
NOTE: The part numbers shown below are for reference only and cannot be ordered
individually. If a shim is required, the shim kit must be ordered.
PART NUMBER
CLEARANCE
(MM)
10130AA070
10130AA080
10130AA090
10130AA100
10130AA110
10130AA120
10130AA130
10130AA140
0.45 – 0.55
0.56 – 0.65
0.66 – 0.75
0.76 – 0.85
0.86 – 0.95
0.96 – 1.05
1.06 – 1.15
1.16 – 1.25
SHIM
THICKNESS
(MM)
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
TARGET GAP
(MM)
1.25 – 1.35
1.26 – 1.35
1.26 – 1.35
1.26 – 1.35
1.26 – 1.35
1.26 – 1.35
1.26 – 1.35
1.26 – 1.35
continued...
CAUTION: VEHICLE SERVICING PERFORMED BY UNTRAINED PERSONS
COULD RESULT IN SERIOUS INJURY TO THOSE PERSONS OR TO OTHERS.
Subaru Service Bulletins are intended for use by professional technicians ONLY. They
are written to inform those technicians of conditions that may occur in some vehicles, or
to provide information that could assist in the proper servicing of the vehicle. Properly
trained technicians have the equipment, tools, safety instructions, and know-how to
do the job correctly and safely. If a condition is described, DO NOT assume that this
Service Bulletin applies to your vehicle, or that your vehicle will have that condition.
Bulletin Number: 11-125-12; Date: 12/03/12
SUBARU OF AMERICA, INC. IS “ISO
14001 COMPLIANT”
The international standard for excellence
in Environmental Management Systems.
Please recycle or dispose of automotive
products in a manner that is friendly to our
environment and in accordance with all
local, state and federal laws and regulations.
Page 1
SPECIAL TOOLS
•
•
•
Pulse/Analog Box, SDI Box and SSMIII						
Digital Caliper with depth attachment or 1” Depth Micrometer
If you do not have the depth attachment for your digital caliper or a Depth Micrometer
use a flat washer (outside diameter 25.5mm, inside diameter 11.1mm, 1.72mm thick or
equivalent). The purpose of the flat washer is to provide a surface for the digital caliper to
rest on while making the measurements.
			
Digital Caliper with Depth Attachment
SERVICE PROCEDURE / INFORMATION
Check the waveforms of the EXHAUST camshaft position sensor (CPS) using the Pulse/
Analog Box, SDI Box and the oscilloscope function of the SSMIII. For detailed information
and instructions, refer to the applicable Service Manual, SSMIII User’s Guide and Subaru
Diagnostic System (SDS). The “Help” function will allow you to access the tutorial
information if needed.
IMPORTANT: When back-probing the ECM connectors to attach the oscilloscope leads,
refer to the wiring schematic for the specific DTC being diagnosed in the applicable Service
Manual for proper connector and terminal locations.
continued...
Bulletin Number: 11-125-12; Date: 12/03/12
Page 2
The following illustrations show a normal oscilloscope pattern followed by an
abnormal pattern.
Normal Waveform
(Normal Pulse)
This example shows a normal reading during the cranking cycle. You
will see three peaks equally spaced, then a longer space. Note that the
right and left hand sensors have the same space, they are just offset.
Abnormal Waveform
(abnormal pulse)
This example shows the right hand sensor has an abnormal reading
during the cranking cycle compared to the left hand sensor.
continued...
Bulletin Number: 11-125-12; Date: 12/03/12
Page 3
If an abnormal pattern is verified similar to those shown in the illustration above, measure the
clearance between the end of the exhaust camshaft position sensor and the sensor plate using
the following procedure.
If the oscilloscope pattern is normal, refer to the applicable Service Manual for additional
troubleshooting and diagnostic procedures.
MEASUREMENT PROCEDURE
The specified clearance is 1.3 +/- .05mm (1.25 to 1.35mm or .049” to .053”).
•
•
•
•
Record radio station presets (and navigation system favorites if applicable).
Disconnect the negative battery cable.
Raise the vehicle on a lift and remove the engine under-guard.
Remove the exhaust camshaft position sensor from the timing chain cover using the
procedure in the applicable Service Manual.
T = 6.4 N•m
(0.7 kgf-m, 4.7 ft-lb)
Camshaft Sensor
Shim (to be added)
Timing Chain Cover
continued...
Bulletin Number: 11-125-12; Date: 12/03/12
Page 4
COMPONENT OVERVIEW
Measurements
A = Top of timing chain cover to camshaft position sensor plate
B = Camshaft position sensor mating surface to the bottom of the sensor
B
A
Camshaft position
sensor plate.
NOTE: When measuring “A”, make sure you are measuring to the outside diameter or “top”
of the sensor plate and not to the bottom of a notch as shown below. Be sure to record all
measurements.
Top of Plate
Notch
continued...
Bulletin Number: 11-125-12; Date: 12/03/12
Page 5
Measurement taken using a digital
caliper and flat washer for support
IMPORTANT: When using the flat washer for support, make sure it is fully seated on the
machined surface of the timing cover as shown in the photo below or your measurements will
not be accurate.
continued...
Bulletin Number: 11-125-12; Date: 12/03/12
Page 6
1. Take a measurement and record the reading.
2. Using a breaker bar and 22mm socket, place the socket on the crankshaft pulley bolt
and rotate the engine clockwise approximately 70º. Caution: Do not rotate the engine
counter-clockwise, doing so will loosen the crankshaft pulley bolt. If the engine
is accidentally turned counter-clockwise make sure the bolt is re-torqued to proper
specification when completed.
3. Take a measurement and record the reading.
4. Rotate the engine clockwise approximately 70º.
5. Take a measurement and record the reading.
6. Use the smallest of three measurements and record the result.
When taking measurement “B”, use a flat steel ruler or equivalent.
Measure the camshaft position sensor mating surface (the area that sits flush on the timing
chain cover) to the bottom of the sensor and record measurement.
continued...
Bulletin Number: 11-125-12; Date: 12/03/12
Page 7
IMPORTANT: If applicable, be sure to account for the thickness of the flat washer when
performing your calculations to determine the required shim thickness.
The specified clearance is 1.3 +/- .05mm (1.25 to 1.35mm or .049” to .053”).
Example calculation
(the 1.72mm thickness of the flat washer is subtracted from “A” dimension)
A = Top of timing chain cover to camshaft position sensor plate
B = Camshaft position sensor mating surface to the bottom of the sensor
A) 25.42 – 1.72 = 23.70
A = 23.70
B = 22.58
A – B = 1.12 (clearance)
In this example a 0.2 shim is required.
Clearance (mm)
1.06 – 1.15
Shim Thickness (mm)
0.2
Target Gap (mm)
1.26 – 1.35
After the correct shim is selected:
•
•
•
•
•
•
Install a new camshaft position sensor o-ring (one time use item).
Reinstall the camshaft position sensor and shim.
Torque the sensor retaining bolt to 6.4 Nm (4.7 ft. lbs. or 56.4 inch-pounds).
Reconnect the sensor engine wiring harness connector.
Reconnect the negative battery cable and reset the radio station presets (and navigation
system favorites if applicable).
Road test the vehicle to confirm the repairs are complete.
WARRANTY/CLAIM INFORMATION
For vehicles within the Basic New Car Limited Warranty period, this repair may be claimed
using the following information.
Labor Description
Exhaust Cam Sensor
Measurement & Shim
Installation
Bulletin Number: 11-125-12; Date: 12/03/12
Labor Operation#
Fail Code
Labor Time
A817-213
UKM-20
0.6
Page 8