New Alternator Assembly to Address DTC P0300 – 2014-2016 Subaru Forester

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NHTSA ID Number: 10187308

Manufacturer Communication Number: 07-112-16R

Summary

This bulletin provides a procedure for diagnosis and repair of DTC P0300 which may result from fluctuation of the alternator’s current output outside of the specified limits.

 


2016 Subaru Forester
2016 Subaru Forester

 


NUMBER: 07-112-16R
DATE: 08/12/16
REVISED: 08/08/17

APPLICABILITY: 2014-16MY Forester 2.5L Models
SUBJECT: New Alternator Assembly to Address DTC P0300

 

INTRODUCTION:

This bulletin provides a procedure for diagnosis and repair of DTC P0300 which may result from fluctuation of the alternator’s current output outside of the specified limits.

 

PRODUCTION CHAGE INFORMATION

The new alternator and tensioner were incorporated into production starting with VIN: G*544643.

 

PART INFORMATION:

Description Part Number
ALTERNATOR ASSEMBLY 23700AB030
TENSR AY-VBELT 23769AA05A New Alternator Assembly to Address DTC P0300 - 2014-2016 Subaru Forester | small light

 

IDENTIFICATION:

Alternator Assembly

 

SERVICE PROCEDURE / INFORMATION:

  • Connect the SSM4 and inspect for stored DTC(s).
  • If any DTC(s) other than P0300 are stored, follow the corresponding diagnostic procedure(s) in the applicable Service Manual before proceeding further with these repairs.
  • Select the data for Roughness Monitor and Battery Current values.
  • Check for any increase in the Roughness Monitor value along with the Battery Current value. If a fluctuation of more than +/- 3A is confirmed, both the alternator assembly and belt tensioner assembly must be replaced as a set with the new parts listed in the table above.

 

The reference illustrations below show examples of “Normal” and “Abnormal” SSM4 data.

“Normal” SSM4 data

“Abnormal” SSM4 data

 

The abnormalities shown above for the Roughness Monitor and Battery Current Value are a result of resonance originating in the alternator pulley assembly.  Although a DTC P0300 can also be set, there is not an actual misfire of the engine.

 

  • When determined necessary to replace the alternator and tensioner, follow the service procedures in the applicable Service Manual.

 

NOTES:

  • The retaining bolt cover / plug has been deleted from the new tensioner, discard the original.
  • Accessory drive belt replacement is NOT required as part of this repair.

 


3 Affected Products

Vehicle

MAKE MODEL YEAR
SUBARU FORESTER 2014-2016

 


1 Associated Document

Manufacturer Communications

NUMBER: 07-112-16R
DATE: 08/12/16
REVISED: 08/08/17

https://www.nhtsa.gov/recalls?nhtsaId=10187308

MC-10187308-0001.pdf 423.629KB

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NHTSA ID Number: 10117541

Manufacturer Communication Number: 07-112-16R

Summary

2.5L MODELS ONLY. This bulletin provides a procedure for diagnosis and repair of DTC P0300 which may result from fluctuation of the alternator’s current output outside of the specified limits.

 

1 Associated Document

Manufacturer Communications

NUMBER: 07-112-16R
DATE: 08/12/16
REVISED: 08/08/17

https://www.nhtsa.gov/recalls?nhtsaId=10117541

MC-10117541-9999.pdf 423.629KB

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NHTSA ID Number: 10120993

Manufacturer Communication Number: 07-112-16R

Summary

New Alternator Assembly. This bulletin provides a procedure for diagnosis and repair of DTC P0300 which may result from fluctuation of the alternator’s current output outside of the specified limits.

 

1 Associated Document

Manufacturer Communications

NUMBER: 07-112-16R
DATE: 08/12/16
REVISED: 11/08/16

https://www.nhtsa.gov/recalls?nhtsaId=10120993

MC-10120993-9999.pdf 414.986KB

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NHTSA ID Number: 10182588

Manufacturer Communication Number: 711216

Summary

This bulletin provides a procedure for diagnosis and repair of DTC P0300 which may result from fluctuation of the alternator?s current output outside of the specified limits.

 

1 Associated Document

Manufacturer Communications

NUMBER: 07-112-16
DATE: 08/12/16

https://www.nhtsa.gov/recalls?nhtsaId=10182588

MC-10182588-9999.pdf 414.236KB

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Last update on 2024-02-29 / Affiliate links / Images from Amazon Product Advertising API

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