NHTSA ID Number: 10154420
Manufacturer Communication Number: 07-147-19
TSB/Document Date: 2019-03-11
Summary
In the Service Manual for the CROSSTREK hybrid
model, the diagnostic procedures for P1C06 and P1C07, which are DTCs for checking the relay, have no steps for specifically checking the relay. Therefore, if trouble occurs in the 12 V battery relay, the Hybrid Power Control Module (HPCM) ends up being replaced even though nothing may be wrong with it.
ATTENTION:
CLAIMS PERSONNEL q
IMPORTANT - All
Service Personnel
Should Read and
Initial in the boxes
provided, right.
SERVICE MANAGER
© 2019 Subaru of America, Inc. All rights reserved.
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SERVICE INFORMATION BULLETIN
APPLICABILITY:
2014-16MY Crosstrek Hybrid (HEV)
SUBJECT:
DTCs P1C06 and P1C07- Diagnostic
Procedure Change
NUMBER: 07-147-19
DATE: 01/25/19
INTRODUCTION:
This Service Information bulletin announces a revised diagnostic procedure to follow for DTCs
P1C06 and P1C07. The existing Service Manual procedures on STIS will be updated in the future.
OVERVIEW:
In the Service Manual for the CROSSTREK hybrid model, the diagnostic procedures for P1C06 and
P1C07, which are DTCs for checking the relay, have no steps for specifically checking the relay.
Therefore, if trouble occurs in the 12 V battery relay, the Hybrid Power Control Module (HPCM)
ends up being replaced even though nothing may be wrong with it. This service bulletin provides
corrections to the Service Manual diagnostics to determine the correct failed part and eliminate
unnecessary HPCM replacements.
The following have been added:
•
Added a relay check to the diagnostic procedures for DTCs P1C06 and P1C07.
•
Added points to check between relay terminals and changed the reference values.
DTC P1C06: (12V Battery Relay Close Circuit Performance): Detects an open circuit, short-circuit
to ground, and short-circuit to power in the harness of 12V battery relay close circuit.
DTC P1C07: (12V Battery Relay Open Circuit Performance): Detects an open circuit, short-circuit
to ground, and short-circuit to power in the harness of 12V battery relay open circuit.
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.
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ISO 14001 Compliant
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excellence in Environmental Management
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Continued...
Bulletin Number: 07-147-19; Date: 01/25/19
Page 1 of 6
SERVICE PROCEDURE / INFORMATION:
Correction in diagnostic procedure for DTC P1C06: DTC 12 V Battery Relay Close Circuit
Performance (The revisions from the existing Service Manual are in red.)
Diagnosis:
•
Detects open circuit, short circuit to ground, and short circuit to power in the harness of 12V
battery relay close circuit.
•
Judge as NG when the detection result is out of specification.
•
Immediately at fault recognition
Trouble symptom:
•
EV traveling/Auto Start Stop does not operate. (Engine does not restart under EV traveling/
Auto Start Stop condition.)
•
Charge warning light illuminates.
Wiring diagram:
Power Supply Circuit
Caution: Before performing diagnosis, refer to CAUTIONS in General description.
NOTE: If these troubles occur, the 12V auxiliary battery may run out.
Continued...
Bulletin Number: 07-147-19; Date: 01/25/19
Page 2 of 6
*
Ref. to Engine STARTING/CHARGING SYSTEMS(H4DO)(H4DO(HEV))
12V Battery Relay INSPECTION
*See page 6 for Check relay instructions.
Continued...
Bulletin Number: 07-147-19; Date: 01/25/19
Page 3 of 6
Correction in Diagnostic Procedure for DTC P1C07: DTC 12V Battery Relay Open Circuit
Performance (The revisions from the existing Service Manual are in red.)
Diagnosis:
•
Detects open circuit, short circuit to ground, and short circuit to power in the harness of 12V
battery relay close circuit.
•
Judge as NG when the detection result is out of specification.
•
Immediately at fault recognition
Trouble symptom:
•
EV traveling/Auto Start Stop does not operate. Engine does not restart under EV traveling/
Auto Start Stop condition.)
•
Charge warning light illuminates.
Wiring diagram:
Power Supply Circuit
Continued...
Bulletin Number: 07-147-19; Date: 01/25/19
Page 4 of 6
*
Ref. to Engine STARTING/CHARGING SYSTEMS(H4DO)(H4DO(HEV))
12V Battery Relay INSPECTION
*See page 6 for Check relay instructions.
Continued...
Bulletin Number: 07-147-19; Date: 01/25/19
Page 5 of 6
Adding the Parts of the 12V Battery Relay to Be Checked and Change In Reference Values
(The revisions from the existing Service Manual are in red.)
INSPECTION:
1. Check that the 12V battery relay has no deformation, cracks or other damage.
2. Measure the resistance between the 12V battery relay terminals.
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: 07-147-19; Date: 01/25/19
Page 6 of 6
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TSB/Document ID: 07-147-19
Replacement Service Bulletin Number:
MFR Communication Date: 2019-01-25
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ELECTRICAL SYSTEM:12V/24V/48V BATTERY
MFR Component System:
MFR Component Subsystem:
Previous TSB | Next TSB |
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