TL V6-3.5L (2007)
Control Module: Service and Repair
How to Update the PCM
Updating the PCM
Special Tools Required
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Honda diagnostic system (HDS)
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Honda interface module (HIM)
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HDS pocket tester
NOTE:
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Use this procedure when you need to update the PCM during troubleshooting procedures.
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Make sure the HDS/HIM has the latest software version. Before you update the PCM, make sure the battery in the vehicle is fully charged.
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Never turn the ignition switch OFF during the update. If there is a problem with the update, leave the ignition switch ON.
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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) lamp came on or was flashed during the update, leave the
ignition switch in the ON (II) position when you disconnect the HIM from the data link connector (DLC). This will prevent PCM damage.
1. Connect the HDS to the data link connector (DLC) (A) located under the driver's side of the dashboard.
2. Turn the ignition switch ON (II), but do not start the engine.
3. Make sure the HDS communicates with the PCM. If it doesn't, go to the DLC circuit troubleshooting. If you are returning from the DLC circuit
troubleshooting, skip steps 4 and 5, then 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 screen prompts with the HDS.
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 we re doing. If the
software re in the PCM is not the latest, follow the instructions on the screen.
NOTE: If the PCM update system requires you to cool the PCM, follow the screen prompts. If you run into a problem (programming takes over
15 minutes, status bar goes over 100%, D or immobilizer indicator flashes, HDS tablet freezes, etc.) during the update procedure, 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.
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Disconnect the HDS from the DLC.
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Reboot the HDS.
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Reconnect the HDS to the DLC, and try the update procedure again.
8. If the TP POSITION CHECK failed in step 5, clean the throttle body.
9. Do the PCM idle learn procedure.
10. Do the CKP pattern learn procedure.
