No.6 Resetting Procedure for the Immobilizer System when Replacing the PCM: Procedure

Fig 1: Resetting Procedure For Immobilizer System (Replacing PCM)

Courtesy of MAZDA MOTORS CORP.

1. Connect the M-MDS to the DLC-2. (See M-MDS Connecting Procedure .)
2. Using the key 1, turn the ignition switch to the ON position.
   NOTE:

   • Although the security light remains illuminated and DTC 23 is displayed after approx. 1 min, this does not indicate an improper procedure. Continue to perform the procedure as indicated.
3. After the vehicle is identified, select the following items from the initial screen of the M-MDS.
   • When using the IDS (laptop PC)
     • Select the "Toolbox" tab.
     • Select "Body".
     • Select "Security".
   • When using the PDS (Pocket PC)
     • Select "Programming".
   • Then, select items from the screen menu in the following order.
     1. Select "PATS Functions".
   • Select "Parameter Reset" from the M-MDS screen menu and perform the procedure according to the M-MDS screen
   • Perform the security access according to the directions on the M-MDS screen. (See SECURITY ACCESS PROCEDURE .)
   • Select the replaced parts according to the directions on the M-MDS.
     • If the PCM is replaced: Select "PCM".
     NOTE:

     • At this time, do not select the other parts from the M-MDS menu.
   • After verifying that the PATS function menu is displayed again on the M-MDS screen, select "Exit (From This Menu)" to finish the M-MDS procedure.
   • After Step 8, wait 5 s or more and then turn the ignition switch to the LOCK position.
   • Disconnect the M-MDS from the DLC-2.
   • Using key 1, turn the ignition switch to the ON position.
   • Verify that the security light illuminates for approx. 3 s and then turns off.
   • After verifying that the security light turns off, turn the ignition switch to the LOCK position.
   • Verify that the all keys can start the engine for 5 s or more  after the procedure.