Diagnostic Procedure

WARNING: This page is about a different car, the 2010 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.

DTC B1026:51 (ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM) DIAGNOSTIC PROCEDURE

Step	Inspection		Action
1	PERFORM STEERING LOCK UNIT PROGRAMMING Perform the steering lock unit programming. (See STEERING LOCK UNIT ID CODE REGISTRATION .) Switch the ignition to off, then open the door to lock the steering. Clear the DTC from the keyless control module using the M-MDS. (See CLEARING DTC [ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM] .) Operate the advanced key to activate the keyless control module. Perform the advanced keyless entry and push button start system DTC inspection using the M-MDS. (See DTC INSPECTION [ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM] .) Is the same DTC present?	Yes	Go to the next step.
1		No	Go to Step 4.
2	INSPECT STEERING LOCK UNIT Inspect the steering lock unit. (See STEERING LOCK UNIT INSPECTION [WITH ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM] .) Is there any malfunction?	Yes	Replace the steering lock unit and perform the steering lock unit programming, then go to the next step. (See STEERING WHEEL AND COLUMN REMOVAL/INSTALLATION [WITH ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM] .) (See STEERING LOCK UNIT ID CODE REGISTRATION .)
2		No	Go to the next step.
3	VERIFY TROUBLESHOOTING COMPLETED Switch the ignition to off, then open the door to lock the steering. Clear the DTC from the keyless control module using the M-MDS. (See CLEARING DTC [ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM] .) Operate the advanced key to activate the keyless control module. Perform the advanced keyless entry and push button start system DTC inspection using the M-MDS. (See DTC INSPECTION [ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM] .) Is the same DTC present?	Yes	Replace the keyless control module, then go to the next step. (See KEYLESS CONTROL MODULE REMOVAL/INSTALLATION .)
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 [ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM] .)
4		No	DTC troubleshooting completed.