Diagnostic Procedure

WARNING: This page is about a different car, the 2009 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

DIAGNOSTIC PROCEDURE

Step	Inspection		Action
1	VERIFY NUMBER OF PROGRAMMED KEYS Perform the PID/data monitor inspection using the M-MDS for verify the number of programmed keys. See PID/DATA MONITOR INSPECTION [IMMOBILIZER SYSTEM (ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM)] . NUMKEY See PID/DATA MONITOR TABLE [IMMOBILIZER SYSTEM (ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM)] . Are eight keys programmed?	Yes	Erase the key ID number, then go to the next step See IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING [ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM] .
1		No	Go to the next step.
2	PROGRAM A NEW KEY ID NUMBER Program a new key ID number. See IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING [ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM] . NOTE: To start the engine, two or more programmed keys are necessary. Switch the ignition to ON using the programmed key (engine off). Clear the DTC from the keyless control module and PCM memory using the M-MDS See CLEARING DTC [IMMOBILIZER SYSTEM (ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM)] ) Perform the immobilizer system (advanced keyless entry and push button start system) DTC inspection using the M-MDS See DTC INSPECTION [IMMOBILIZER SYSTEM (ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM)] . Is the same DTC present?	Yes	Replace the PCM and program the immobilizer system-related parts, then go to the next step. See PCM REMOVAL/INSTALLATION [L5] . See PCM REMOVAL/INSTALLATION [MZI-3.7] . See IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING [ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM] .
2		No	Dispose of the malfunctioning key and program a new key if necessary, then go to Step 4. See IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING [ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM] .
3	VERIFY TROUBLESHOOTING COMPLETED Clear the DTC from the keyless control module and PCM memory using the M-MDS See CLEARING DTC [IMMOBILIZER SYSTEM (ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM)] . Perform the immobilizer system (advanced keyless entry and push button start system) DTC inspection using the M-MDS. See DTC INSPECTION [IMMOBILIZER SYSTEM (ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM)] ) Is the same DTC present?	Yes	Replace the keyless control module and program the immobilizer system-related parts, then go to the next step. See KEYLESS CONTROL MODULE REMOVAL/INSTALLATION [ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM] . See IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING [ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM] .
3		No	Go to the next step
4	VERIFY THAT NO OTHER DTCs ARE PRESENT Are any DTCs present?	Yes	Go to the applicable DTC inspection. See DTC TABLE [IMMOBILIZER SYSTEM (ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM)] .
4		No	DTC troubleshooting completed