RL V6-3.7L (2009)
Engine Control Module: Programming and Relearning
PCM Update
PCM Update
Special Tools Required
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Honda diagnostic system (HDS) tablet tester
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Honda interface module (HIM) and an iN workstation with the latest HDS software version
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HDS pocket tester
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GNA600 and an iN workstation with the latest HDS software version
Any one of the above updating tools can be used.
NOTE:
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Make sure the HDS/HIM has the latest software version downloaded from the iN (interactive network).
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Before you update the PCM, make sure the battery in the vehicle is fully charged, and connect a jumper battery (not a battery charger) to maintain
system voltage.
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Never turn the ignition switch to ACC (I) or to LOCK (0) during the update. If there is a problem with the update, leave the ignition switch in ON
(II).
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To prevent PCM damage, do not operate anything electrical (headlights, audio system, brakes, A/C, power windows, door locks, etc.) during the
update.
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To ensure the latest program is installed, do a PCM update whenever the PCM is substituted or replaced.
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You cannot update a PCM with a program it already has. It will only accept a new program.
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If you need to diagnose the Honda interface module (HIM) because the HIM's red (#3) light came on or was flushing during the update, leave the
ignition switch in ON (II) when you disconnect the HIM from the data link connector (DLC). This will prevent PCM damage.
1. Turn the ignition switch to ON (II), but do not start the engine.
2. Connect the HDS to the data link connector (DLC) (A) located under the driver's side of the dashboard.
3. Make sure the HDS communicates with the PCM and other vehicle systems. If it doesn't, go to the DLC circuit troubleshooting. See: Testing and
Inspection/Component Tests and General Diagnostics/DLC Circuit Troubleshooting If you are returning from the DLC circuit troubleshooting,
skip steps 4 and 5 and clean the throttle body after updating the PCM.
4. Select the INSPECTION MENU with the HDS.
5. Select the ETCS TEST, then select the TP POSITION CHECK, and follow the HDS screen prompts.
NOTE: If the TP POSITION CHECK indicates FAILED, continue this procedure.
6. Exit the HDS diagnostic system, then select the update mode, and follow the screen prompts to update the PCM.
7. If the software in the PCM is the latest, disconnect the HDS/HIM from the DLC, and go back to the procedure that you were doing. If the software
in the PCM is not the latest, follow the instructions on the screen. If prompted to choose the PGM-FI system or the A/T system, make sure you
update both.
NOTE: If the PCM update system requires you to cool the PCM, follow the screen prompts. If there is a problem during the update procedure
(programming takes over 15 minutes, status bar goes over 100 %, D or immobilizer indicator flashes, HDS tablet freezes, etc.), follow these steps
to minimize the chance of damaging the PCM:
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Leave the ignition switch in the ON (II) position.
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Connect a jumper battery (do not connect a battery charger).
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Shut down the HDS.
