Category ECM

How to Update the ECM/PCM of Honda Accord 2002-2007

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How to Update the ECM/PCM of Honda Accord 2002-2007

Updating the ECM/PCM
ECM/PCM Updating and Substitution for Testing
Special Tools Required: OBD Diagnostic tools.

Use this procedure when you have to substitute a known-good ECM/PCM in a
troubleshooting procedure. Update the ECM/PCM only if the ECM/PCM does not have
the latest software loaded.

NOTE:  Do not turn the ignition switch OFF while updating the ECM/PCM. If you turn
the ignition switch OFF before completion, the ECM/PCM can be damaged.
How to Update the ECM/PCM
NOTE:

  –  To ensure the latest program is installed, do an ECM/PCM update whenever the
     ECM/PCM is substituted or replaced.

  –  You can not update an ECM/PCM with the program it already has. It will only
     accept a new program.

  –  Before you update the ECM/PCM, make sure the vehicle’s battery is fully
     charged.

  –  To prevent ECM/PCM damage, do not operate anything electrical (audio system,
     brakes, A/C, power windows, moonroof, door locks, etc.) 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 ECM/PCM damage.

  1. Turn the ignition switch ON (II). 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. Select the INSPECTION MENU with the HDS.

  4. Do the TP LEARNING CHECK in the ETCS TEST.

  5. If the HDS does not have the update function, disconnect the HDS from the
     vehicle and connect the Honda Interface Module (HIM).

  6. Do the ECM/PCM update procedure as described on the HIM label and in the
     ECM/PCM update system.

  7. Do the ECM/PCM idle learn procedure.

  8. Clear the CKP pattern with the HDS while the engine is stopped.
How to Substitute the ECM/PCM

  1. Remove the ECM/PCM from the vehicle.
  2. Install a known-good ECM/PCM.
  3. Rewrite the immobilizer code with the ECM/PCM replacement procedure in the
     HDS; it allows you to start the engine.
  4. After completing your tests, install the original ECM/PCM, and rewrite the
     immobilizer code with the ECM/PCM replacement procedure in the HDS.
  5. If you substitute a ECM/PCM select the INSPECTION MENU with the HDS, with the
     original ECM/PCM installed.
  6. Do the TP LEARNING CHECK in the ETCS TEST.
  7. Replace the ECM/PCM, and rewrite the immobilizer code with the ECM/PCM
     replacement procedure in the HDS.

Toyota Yaris Vios Echo Engine Control Module Programming and Relearning Procedure

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Toyota Yaris Engine Control Module Programming and Relearning Procedure

Toyota Yaris Vios Echo Engine Control Module Programming and Relearning Procedure

This are the things you need to do when replacing the new ECU to your Toyota yaris.

 

1NZ-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: REGISTRATION

1.DESCRIPTION

2.READ VIN

3.WRITE VIN

NOTICE: The Vehicle Identification Number (VIN) must be input into the replacement ECM.

HINT The VIN is a 17-digit alphanumeric number. A OBD Diagnostic tools is required to register the VIN.

HINT This registration section consists of two parts, Read VIN and Write VIN.

(a)Read VIN: This process allows the VIN stored in the ECM to be read in order to confirm that the two VINs, provided with the vehicle and stored in the vehicle’s ECM, are the same.

(b)Write VIN: Explains the VIN writing process in a flowchart. This process allows the VIN to be input into the ECM. If the ECM is changed, or the ECM VIN and vehicle VIN do not match, the VIN can be registered, or overwritten in the ECM by following this procedure.

READ VIN PROCEDURE

(a)Confirm the vehicle VIN.

(b)Connect the OBD Diagnostic tools to the OBD Socket.

(c)Turn the ignition switch to ON.

(d)Turn the OBD Diagnostic tools on.

(e)Enter the following menus: Powertrain / Engine and ECT / Utility / VIN / VIN Read.

 

WRITE VIN PROCEDURE

(a)Confirm the vehicle VIN.

(b)Connect the OBD Diagnostic tools to the DLC3.

(c)Turn the ignition switch to ON.

(d)Turn the OBD Diagnostic tools on.

(e)Enter the following menus: Powertrain / Engine and ECT / Utility / VIN / VIN Write.

 

NOTE:

When replacing the new ECU all you need is to register the  VIN to you new ECU.

If you are using LAUNCH X431 PRO Powertrain / Engine and ECT / Utility or Special Function/ VIN / VIN Write.