No. 4 Programming Procedure Due to PCM Replacement: Procedure

Fig 1: Valid Key

Courtesy of MAZDA MOTORS CORP.

PCM PROGRAMMING PROCEDURE CHART

Step	Procedure	Action after procedure
1	REPLACE PCM  See PCM REMOVAL/INSTALLATION [LF]	Go to the next step.
2	PERFORM PARAMETER RESET  Connect the M-MDS to the DLC-2. (See M-MDS CONNECTING PROCEDURE ) Turn the ignition switch to the ON position using a valid key. NOTE: Although the security light remains illuminated and DTC 23 is displayed after approx. 1 min  , continue to perform the procedure as indicated. Verify that the keyless warning light illuminates for approx. 3 s  , and then turns off. After vehicle identification, select the following from the M-MDS initial screen. Using an IDS (laptop PC) Select "Body". Select "Security". Select "PATS Functions". Using a PDS (pocket PC): Select "Programming". Select "PATS Functions". Then, select an item from the screen menu. Parameter Reset Perform the security access according to the directions on the M-MDS screen. Select the replaced parts "PCM" according to the directions on the M-MDS screen. CAUTION: 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 "Finish (this menu)". Turn the ignition switch to the LOCK position. Turn the ignition switch to the ON position. Verify that the security light illuminates for approx. 3 s  , and then turns off. Turn the ignition switch to the LOCK position.	Go to the next step.
3	VERIFY PROGRAMMING IS PERFORMED CORRECTLY  Verify that the engine can be started with all the keys. Can the engine be started?	Yes	Procedure is completed
		No	Perform the corresponding DTC inspection to repair the malfunctioning part.