Campaign - Software Updates For IMA Battery: Overview

05-038

October 3, 2006

Applies To:
2005 Accord Hybrid - From VIN JHMCN3...5C000001 thru JHMCN3...5C006600

Product Update: IMA Battery Software Update
(Supersedes 05-038, dated July 15, 2011, to revise the information marked by the black bars and asterisks)

*REVISION SUMMARY

Under WARRANTY CLAIM INFORMATION, the flat rate time was changed because the MVCI updates control modules more efficiently.*

BACKGROUND

^ The current battery control software can lead to IMA battery damage when the HDS is used in the generic mode, or a generic scan tool is used to clear IMA DTCs (diagnostic troubleshooting codes).

^ The current engine control software will clear the stored learned values for the CKP (crankshaft position) sensor if an HDS in generic mode, or a generic scan tool, is used to clear DTCs.

With the CKP values cleared, the PCM could misinterpret the CKP input at high rpm as being a paired misfire (P0301/P0305) and set these DTCs.

CUSTOMER NOTIFICATION

All owners of affected vehicles will be mailed a notification of this campaign. A copy of the customer notification is shown in this service bulletin.

Not all vehicles within the affected VIN range are affected by this product update. Before beginning work on a vehicle, make sure it is eligible by checking for one or more of these items:

^ The customer has a notification letter.

^ The vehicle is shown on your campaign responsibility report.

^ The vehicle is shown as eligible on a VIN status inquiry.

In addition to the bulleted verification items, check for a punch mark above the first character of the engine compartment VIN. A punch mark in that location means that the PCM software has already been updated.

CORRECTIVE ACTION

Update the IMA battery control module and the PGM-FI software.





SOFTWARE INFORMATION





WARRANTY CLAIM INFORMATION

Failed Part: P/N 1K000-RCJ-A03


Defect Code: 5LK00

Symptom Code: P8500

Skill Level: Repair Technician

REPAIR PROCEDURE

1. Update the PGM-FI software. Refer to Service Bulletin 01-023, Updating Control Units/Modules. Be sure to update the following three control modules:

^ ECM

^ IMA Battery System (within the MCM)

^ IMA Motor System (within the MCM)

2. Disconnect the HDS or MVCI.

3. Start the engine.

4. Raise the engine speed to 3,500�4,000 rpm, and watch the IMA charge indicator on the dash. The charge indicator should register about three green bars of charging. Continue to hold the engine speed between 3,500 and 4,000 rpm until the IMA battery charge level gauge shows that the IMA battery is fully charged.

5. Do the idle learn procedure:

^ Make sure all electrical items (A/C, audio unit, defogger, lights, etc.) are off.

^ Start the engine, and let it warm up to its normal operating temperature (the cooling fans cycle twice).

^ Let the engine idle (throttle closed and all electrical items off) for 10 minutes.





6. Center-punch a completion mark above the first
character of the engine compartment VIN.





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