Hybrid System - IMA Battery And Hardware Updates
10-083December 23, 2010
Applies To:
2005-07 Accord Hybrid
2003-05 Civic Hybrid
2006-08 Civic Hybrid
IMA Battery Software And Hardware Updates
BACKGROUND
Due to improvements in battery manufacturing efficiency, once stocks of original IMA batteries are depleted, a new battery design will be available for IMA battery replacement. Both battery types require that its battery control software be matched to its IMA battery type. Failure to match the software with the battery will result in reduced IMA battery life.
In addition, if the battery condition monitor (BCM) or the motor control module (MCM) is replaced or reprogrammed, matching IMA battery software must be installed in that control module to maximize the IMA battery's life.
This service bulletin includes these subjects:
^ Identifying IMA battery types
^ Determining correct IMA software and matching it to the IMA battery
^ Installing IMA battery software
^ Replacing BCM/MCM hardware and updating its software
^ Checking for an IMA battery/software mismatch DIG
WARRANTY CLAIM INFORMATION
None. This service bulletin is for information purposes only.
IDENTIFYING IMA BATTERY TYPES
To identify an IMA battery type, use this information:
^ An original IMA battery type does not have a 3-character battery code label attached to its outer case.
Original IMA Battery Type:
(Example shown for a 2006-08 Civic Hybrid)
^ A new IMA battery type has a 3-character battery code label attached to its outer case.
New IMA Battery Type:
(Example shown for a 2006-08 Civic Hybrid)
New-type IMA batteries are shipped with an instruction package that includes an extra battery code label. This peel-off label has the same 3-character battery code found on the battery case. This code is used to update the BCM's or MCM's software, matching the vehicle's IMA control unit to the IMA battery being installed.
NOTE:
Clean the driver's doorjamb, and apply the extra IMA battery code label below the door striker.
DETERMINING CORRECT IMA SOFTWARE AND MATCHING IT TO THE IMA BATTERY
1. Use the Honda Diagnostic System (HDS) to bring up the IMA System Data List. At the top of the Data List screen is the program P/N; this P/N identifies which IMA battery software is currently installed in the vehicle. For example, the HDS IMA Data List screen-shot below shows a program P/N of 1K101-RMX-A070.
IMA System Data List Screen on the HDS
2. On the IMA Software Chart below, note that there are two possible matches for IMA software program P/N 1K1O1-RMX-A070, which is listed as 1K101 - RMX-*x** in the program P/N column. The "x" in the last 4-digits of the program P/N is the "identifier which tells what IMA software is currently installed. So for this vehicle, the second character within A070 is a "0 (zero)." Referring to the Identifier column in the chart, a "0" means that this is the IMA software program P/N for a 2006-08 Civic Hybrid with an original IMA battery type.
IMA Software Chart
3. The IMA Software Chart also indicates (in the example) that the correct battery code for matching the IMA control unit's software to an original-design IMA battery is "YHN." If you are only updating the software and not replacing the IMA battery, visually check the installed IMA battery-an original IMA battery type does not have an IMA battery code label.
^ If the installed battery does not have an IMA battery code label attached to it, it is an original IMA battery type, and the currently installed software is matched to the IMA battery and its BCM.
^ If this Civic Hybrid's replacement IMA battery is also an original IMA battery type (without a battery code label), the software currently installed in that vehicle is also matched to the new, replacement original IMA battery type.
^ If the replacement IMA battery has a battery code label that indicates it is a "PC2 "it is a new IMA battery type. The existing vehicle's IMA software (battery code YHN) is not compatible with that IMA battery. After that replacement battery type is installed, the vehicle's IMA BCM software must be updated to match the replacement battery type.
INSTALLING IMA BATTERY SOFTWARE
[NOTICE]
Once new IMA battery software is installed, it is currently not possible to re-install the old battery software.
If new IMA battery software was installed by mistake, a replacement IMA ECU must be ordered and installed. This part will be a BCM on 2006-08 Civic Hybrids, and an MCM on 2003-05 Civic Hybrids and 2005-07 Accord Hybrids.
Follow these guidelines when installing IMA software:
^ If only the software is being updated, first visually inspect the IMA battery to determine if it's an original or new type. It is possible that a salvaged IMA battery may have been installed without the IMA software being updated. After verifying the IMA battery type, install its matching software by selecting the correct battery code from the IMA Software Chart.
^ If known-good parts are being substituted, or if the replacement IMA battery is from another vehicle, make sure to match the update software to those parts and/or the IMA battery being installed.
^ If an original (no label) IMA battery type is installed in a vehicle that has been updated to new IMA battery type software, the MCM/BCM must be replaced and the correct software installed on the new MCM/BCM. Also, make sure to remove the battery code label from the doorjamb.
^ To install IMA software on a hybrid vehicle, enter the correct battery code on the Honda Diagnostic System (HDS), or an MVCI, or a PC, using all CAPITAL letters. Press ENTER to begin the update.
NOTE:
^ When updating software using the HDS, enter the battery code in the "Enter the IMA Battery Type" window.
^ The MVCI enters CAPITAL letters as the default setting.
^ After entering the battery code, the HDS may indicate that the latest software has already been installed and no update is necessary.
^ On a 2003-05 Civic Hybrid, check that the latest IMA motor software has also been installed.
IMA Battery Software Update Screen Examples:
REPLACING BCM/MCM HARDWARE AND UPDATING ITS SOFTWARE
If either the battery condition monitor (BCM) (2006-08 Civic Hybrid) or the motor control module (MCM) (2003-05 Civic Hybrid, 2005-07 Accord Hybrid) are replaced or reprogrammed, their respective battery codes must be used to ensure that the latest IMA battery matching software is installed on them to produce maximum IMA battery life.
NOTE:
The IMA battery software is stored in either the BCM or the MCM, depending on the model and year.
^ In 2006-08 Civic Hybrids, the BCM is a separate control unit and its part number starts with "1K100."
^ In 2003-05 Civic Hybrids and 2005-07 Accord Hybrids, the BCM is part of the MCM and its part number starts with "1K000."
^ The MCM is listed as a PDU in the Honda parts catalog.
CHECKING FOR AN IMA BATTERY/SOFTWARE MISMATCH DTC
After updating the IMA software, use the HDS to see if an IMA Battery/Software Mismatch DIG has been set. The 2003-05 Civic Hybrid and the 2005-07 Accord Hybrid may set IMA DIG P1569 if a new IMA battery type is installed and the old software is not updated.
If DTC P1569 is stored, check the IMA battery software that was installed and the IMA battery type for a possible mismatch before further troubleshooting.
NOTE:
^ The 2006-08 Civic Hybrid does not set IMA DTC P1569 if there is a battery/software mismatch.
^ If DTCs U0301 or U0312 is stored, update the software according to the instructions in Service Bulletin 09-026, 2006-09 Civic Hybrid, 2010 Insight New DTCs U0301, U0302, and U0312.
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