Operation CHARM: Car repair manuals for everyone.
Home >> Acura >> 2006 >> TL V6-3.2L >> Repair and Diagnosis >> Transmission and Drivetrain >> Transmission Control Systems >> Relays and Modules - Transmission and Drivetrain >> Relays and Modules - A/T >> Control Module >> Testing and Inspection >> How to Update the PCM
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

How to Update the PCM

How to Update the PCM

NOTE:
- To ensure the latest program is installed, do a PCM update whenever the PCM is substituted or replaced.
- You cannot update a PCM with the program it already has. It will only accept a new program.
- Before you update the PCM, make sure the vehicle's battery is fully charged.
- To prevent PCM damage, do not operate any electrical system (audio system, brakes, air conditioning, power windows, moonroof, and door locks) during the update.
- If you need to diagnose the Honda interface module (HIM) because the HIM's red (#3) light came on or was flashing 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. Turn the ignition switch ON (II). Do not start the engine.





2. Connect the HDS or the Honda interface module (HIM) to the DLC (A) located under the left end of the dash.
3. Do the PCM update procedure as described on the HIM label and in the PCM update system.
4. Do the PCM idle learn procedure.
5. Do the CKP pattern clear/pattern learn procedure.
pro multis · About Operation CHARM