ECM Replacement
NOTE:
  • Make sure the HDS is loaded with the latest software version.
  • If you are replacing the ECM after substituting a known-good ECM, reinstall the original ECM, then do this procedure.
  1. Connect the HDS to the data link connector (DLC) (A) located under the driver's side of the dashboard.
  1. Turn the ignition switch to ON (II).
  1. Make sure the HDS communicates with the ECM and other vehicle systems. If it doesn't, go to the DLC circuit troubleshooting.
  1. Remove the battery.
  1. Turn the ignition switch to LOCK (0).
  1. Remove the ECM cover (A).
  1. Remove the bolts (D), then remove the ECM (E).
  1. Disconnect the ECM connectors A, B, and C.
    NOTE: ECM connectors A, B, and C have symbols (A=□, B=△, C=○) embossed on them for identification.
  1. Install the parts in the reverse order of removal.
  1. Turn the ignition switch to ON (II).
    NOTE: DTC P0630 ‘‘VIN Not Programmed or Mismatch'' may be stored because the VIN has not been programmed into the ECM; ignore it, and continue this procedure.
  1. Manually input the VIN to the ECM with the HDS.
  1. Select the IMMOBI SYSTEM with the HDS.
  1. Enter the immobilizer code using the ECM replacement procedure in the HDS; it allows you to start the engine.
  1. Select PGM-FI system and reset the ECM with the HDS.
  1. Update the ECM if it does not have the latest software.
  1. Enter the anti-theft code for the audio system and set the clock.