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Главная arrow Тех информация arrow Service Bulletin arrow Bulletin No: 01-022/08 ROUGH IDLE, LACK OF POWER, AND/OR MIL ON WITH DTC P2177/P2187

2007 Mazda CX-7 Sport

ROUGH IDLE, LACK OF POWER, AND/OR MIL ON WITH DTC P2177/P2187 (FUEL SYSTEM LEAN) TECHNICAL SERVICE BULLETIN
Reference Number(s): 01-022/08, Date of Issue: 04/02/2008
MAZDA: 2007-2008 Mazdaspeed3 vehicles; 2006-2007 Mazdaspeed6 vehicles; 2007-2008 CX7 vehicles
 
BULLETIN NOTE

NOTE:
 This bulletin supersedes the previous bulletin issued on 03/27/08. The
          REPAIR PROCEDURE has been revised.
 
APPLICABLE MODEL(S)/VINS
2007-2008 Mazdaspeed3 vehicles with VINs lower than JM1BK**** ** 859606 (produced before November 22, 2007)
2006-2007 Mazdaspeed6 vehicles
2007-2008 CX-7 vehicles with VINs lower than JM3ER**** ** 196510 (produced before November 19, 2007)

DESCRIPTION

Due to low fuel pressure at the high-pressure fuel pump, some vehicles may experience the following:
     Rough idle, stall and/or hesitation under cold conditions.
     Intermittent lack of power during acceleration when the engine gets hot.
     MIL turns on with DTC P2177/P2187 (fuel system too lean at off idle).
This is caused by a delayed fuel pressure build-up from the high pressure fuel pump. There are two main reasons for this:
1.     The drive current from the PCM is not enough for some fuel pumps.
2.             Some fuel pumps have slower response.
To fix the problem, the PCM software and the specification of the high-pressure fuel pump have been changed. Customers having this concern should have their vehicle repaired using the following repair procedure.

REPAIR PROCEDURE

Reboot the IDS to clear memory before reprogramming.

Using IDS 51.9 or later software, reprogram the PCM to the latest calibration (refer to "Calibration Information" table) by following the "Module Reprogramming" procedure.

NOTE:  Always update the IDS tool first, then follow on-screen instructions to download the needed calibration file for PCM reprogramming. It is not necessary to remove any fuses or relays during PCM reprogramming when the IDS screen prompts you to do so. You may accidentally stop power to one of the PCM terminals and cause the PCM to be blanked, or you may receive error messages during the IDS reprogramming procedure. IDS shows the calibration part numbers after programming the PCM. Please be aware that PCM calibration part numbers and file names listed in any Service Bulletin may change due to future releases of IDS software, and additional revisions made to those calibrations for service related concerns. When reprogramming a PCM, IDS will always display the "latest" calibration P/N available for that vehicle. If any calibration has been revised/updated to contain new information for a new service concern/issue, it will also contain all previously released calibrations. When performing this procedure, we recommend that a battery charger be installed on the vehicle battery and turned ON to a maximum charge of no more than 20 AMPS to keep the vehicle battery up to capacity. If you exceed 20 AMPS, it could damage the VCM.

3. For vehicles built before April 7, 2007 that are experiencing the conditions as noted in this service bulletin after the PCM calibration update, perform a Warranty Vehicle Inquiry using your eMDCS System and inspect Warranty Claim Inquiry Detail for high-pressure fuel pump replacement.
If no prior history of replacement, replace the high-pressure fuel pump. Refer to MS3 online instructions or Workshop Manual section 01-14 FUEL PUMP UNIT REMOVAL/INSTALLATION.
If the histoiy indicates part number L3K9-13-35ZB was used during a repair, use the following illustration to inspect the production date of the high-pressure fuel pump. Replace it if the production date is before March 26, 2007.

 
Fig, 1; Locating Production Date Of High-Pressure Fuel Pump Courtesy of MAZDA MOTORS CORP.

Date of production is marked as a 4 digit code "YMDD" at the pipe.

Prodaction date referens 

 

Y for Year

4for2004....7for2007                                       :                   1

 

M for Month

1 for Jan....9 for Sept, X for October, Y for Nov, Z for Dec

DD for Date

01 for 1st of month....31 for 31st of month

Example

M4Z16" means Dec 16, 2004; 7608 means June 8, 2007

 

CAUTION: When replacing the high-pressure fuel pump, it is very important to make sure that the tension collar is present before reinstalling the pump. Failure to do so will result in excessive engine noise and the subsequent failure of the high-pressure fuel pump and its cam lobes.



4. After performing the PCM reprogramming procedure, verify the repair by starting the engine and
making sure there are no MIL illumination or abnormal warning lights present.

NOTE:  # If any DTCs should remain after performing DTC erase, diagnose
the DTCs according to the appropriate Troubleshooting section of the Workshop Manual.

• After PCM reprogramming, it is no longer necessary to road test the vehicle to "relearn" KAM (Keep Alive Memory).

5. Fill out an "Authorized Modifications" label (P/N 9999-95-AMDC-97) with the new PCM calibration
information, your dealer code, and today's date.

6. Place the "Authorized Modifications" label on the "A" pillar below the tear tag in the driver door jamb.

CALIBRATION INFORMATION

Mazdaspeed3 (52.2 or later software)

 

Spec

New PCM Calibration Part Number

File Name

CA

L39R-18-881D

SW-L39RED000

Fed, Canada    

L39S-18-881D

SW-L39SED000        


Mazdaspeed6 (51.9, 52.2 or latersoftware)

 

 

Spec

New PCM Calibration Part Number

File Name

CA

L38G-18-1881G

SW-L38JEG000

Fed/Canada     

L38K-18-1881G

SW-L38KEG000


CX-7 (51.9,52.2

(51.9? 52.2, or later software)

 

 

Spec

Model Year

Drive

New PCM Calibration Part Number

File Name

СА

2008

2WD

L39L-18-881D

SW-L39LED000

 

 

 

 

4WD

L39M-18-881D

SW-L39MED000

 

 

2007

2WD

L33L-18-881T

SW-L33LET000

 

 

 

 

2WD(1)

LKYX-18-88 IB

SW-LKYXEB000

 

 

 

 

4WD

L33M-18-881T

SW-L33MET000

 

 

 

 

4WD(1)

LKYZ-18-88 IB

SW-LKYZEB000

Fed/Canada

2008

2WD

L39N-18-881D

SW-L39NED000

 

 

 

 

4WD

L39P-18-88 ID

SW-L39PED000

 

 

2007

2WD

L33N-18-88 IT

SW-L33NET000

 

 

 

 

2WD(1)

LKZ1-18-881B

SW-LKZ1EB000

 

 

 

 

4WD

L33P-18-881T

SW-L33PET000

 

 

 

 

4WD(1)

LKZ2-18-88 IB

SW-LKZ2EB000

Mexico

2007

2WD

L39J-18-88 IF

SW-L39JEF000

 

 

 

 

4WD

L39K-18-88 IF

SW-L39KEF000

(1) TI-110/07 (Engine Pinging and/or Lack of Power During Acceleration) applied vehicles.


NOTE: The PCM Calibration Part Numbers listed above are provided for PCM reprogramming purposes only. These are not necessarily the same Mazda part numbers used to order an actual PCM through the Mazda Parts System. It is not necessary to order a PCM as part of this repair procedure.
 
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