06-67-18

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SERVICE MANAGER
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SERVICE INFORMATION BULLETIN
APPLICABILITY:
		
		
SUBJECT:
2013-2014MY Legacy and Outback with EyeSight
2015-2016MY Impreza with EyeSight
2015-2017MY Crosstrek with EyeSight		
NUMBER: 06-67-18
DATE: 10/19/18
DTC C0075- Additional Diagnostic Procedures
INTRODUCTION:
This Service Information Bulletin provides additional steps to follow when diagnosing a DTC C0075:
WHEEL CYLINDER PRESSURE SENSOR OUTPUT on the EyeSight equipped models listed
above. The information in this bulletin is applicable when DTC C0075 is accompanied by detail
codes 5090 and / or 5101. The additional diagnostics are intended to reduce unnecessary replacement
of the Hydraulic Unit (H/U) Assembly.
SERVICE PROCEDURE / INFORMATION:
REMINDER: Customer satisfaction and retention starts with performing quality repairs.
Always refer to the applicable Service Manual and review the full requirements of the repairs
being performed. The Service Manual procedures contain information critical to performing an
effective repair the first time and every time. This includes but is not limited to: important SAFETY
precautions, proper inspection criteria, necessary special tools, required processes and related onetime-use parts needed for a complete and lasting repair.
As referenced in the Introduction above, current Service Manual diagnostics indicate replacement of
the brake system H/U as the repair for this DTC but, the root cause of C0075 and detail codes 5090
and/ or 5101 may be related to a difference between the right and left wheel cylinder pressure sensor
signal values. This difference causes the pressure sensor component(s) of the H/U to be judged as
abnormal. Since the sensors are not serviceable, replacement of the H/U is required.
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: 06-67-18; Date: 10/19/18
Subaru of America, Inc. is
ISO 14001 Compliant
ISO 14001 is 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.
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For this reason, these other potential causes must be investigated and ruled out in the order listed
below BEFORE replacing the H/U:
1. Brake hydraulic system contaminated with air
2. Stop lamp switch “ON” point out of adjustment
3. Deterioration (wear and / or rusting) of brake components.
Step 1: Bleeding the brake system:
1. Bleed the brake system thoroughly following the procedure in the applicable Service Manual.
IMPORTANT: It is critical to follow the brake bleeding sequence outlined in the applicable Service
Manual when. If performed in the wrong order, air will remain in the system.
2. Perform the “ABS Sequence Control” procedure once using the SSM.
3. Bleed the brake system thoroughly following the procedure in the applicable Service Manual.
4. Perform the “VDC Sequence Control” procedure once using the SSM.
5. Bleed the brake system thoroughly following the procedure in the applicable Service Manual.
6. Repeat the above steps 2. to 5. at least three times until all the air has been purged.
Step 2: Stop lamp switch adjustment:
Adjust the stop light switch following the procedures outlined in the applicable TSB:
•
For the notched, “Twist-Lock” -type stop lamp switch, see TSB 07-128-18R.
•
For the threaded “Lock Nut” -type stop lamp switch, see TSB 07-131-18R.
Step 3: Individual brake system component inspection:
IMPORTANT: If the brake rotors and pads are found to be in serviceable condition and no concerns
are observed with them, the next step would be to inspect the brake hoses. If pressure variation can
be observed using SM4, the possibility exists of internal damage to the hose(s). This is particularly
possible if there is a history of prior front brake servicing and there are any indications on the hose
showing possible clamp usage or the caliper(s) being supported by the hose during past servicing.
•
When the rotor is rusted as shown in the photos below, replace it with a new rotor and brake
pad set even if the rotor thickness has not reached minimum thickness.
Continued...
Bulletin Number: 06-67-18; Date: 10/19/18
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•
When the pad shims are rusted or deformed as shown below, replace with new shims.
IMPORTANT REMINDERS:
•
SOA strongly discourages the printing and/or local storage of service information as
previously released information and electronic publications may be updated at any time.
•
Always check for any open recalls or campaigns anytime a vehicle is in for servicing.
•
Always refer to STIS for the latest service information before performing any repairs.
Bulletin Number: 06-67-18; Date: 10/19/18
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