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	PERFORM DTC INSPECTION 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)] ) Are the following DTCs present? U0001:88	Yes	Go to the applicable DTC inspection
1		No	Go to the next step
2	VERIFY WHETHER PROGRAMMING OF IMMOBILIZER SYSTEM-RELATED PARTS HAS BEEN PERFORMED AFTER REPLACE PCM After replace the PCM, has the programming of immobilizer system-related parts been performed?	Yes	Go to the next step.
2		No	Perform the programming of immobilizer system-related parts after replace the PCM only, then go to the next step See IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING [ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM] .
3	PERFORM DTC INSPECTION 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	Perform the programming of immobilizer system-related parts after replace the keyless control module only, then go to the next step See IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING [ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM] .
3		No	Go to Step 6
4	PERFORM DTC INSPECTION 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] .
4		No	Go to Step 6
5	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] .
5		No	Go to the next step.
6	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)] .
6		No	DTC troubleshooting completed.