Diagnostic Procedure

WARNING: This page is about a different car, the 2016 Mazda CX-5. However, it is still accessible from the selected car via links, so may be relevant.

Step	Inspection		Action
1	INSPECT PUSH BUTTON START CONNECTOR CONDITION Switch the ignition to off. Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .) Disconnect the push button start connector. Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection. Is the connector normal?	Yes	Go to the next step.
1		No	Repair or replace the connector, then go to Step 6.
2	INSPECT START STOP UNIT CONNECTOR CONDITION Disconnect the start stop unit connector. Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection. Is the connector normal?	Yes	Go to the next step.
2		No	Repair or replace the connector, then go to Step 6.
3	INSPECT COIL ANTENNA CIRCUIT FOR SHORT TO GROUND Verify that the push button start and start stop unit connectors are disconnected. Inspect for continuity between the following terminals (vehicle wiring harness side) and body ground. Push button start terminal A Push button start terminal B Is there continuity?	Yes	Repair or replace the wiring harness which is shorted to ground, then go to Step 6.
3		No	Go to the next step.
4	INSPECT COIL ANTENNA CIRCUIT FOR OPEN CIRCUIT Verify that the push button start and start stop unit connectors are disconnected. Inspect the wiring harness between the following terminals (vehicle wiring harness side) for continuity. Start stop unit terminal 1AC and push button start terminal A Start stop unit terminal 1AE and push button start terminal B Is there continuity?	Yes	Go to the next step.
4		No	Repair or replace the wiring harness which has an open circuit, then go to Step 6.
5	PERFORM DTC INSPECTION AND VERIFY IF MALFUNCTIONING PART IS COIL ANTENNA Reconnect all the disconnected connectors. Remove the ROOM 15 A fuse. Reconnect the disconnected negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .) Clear DTC for the immobilizer system using the M-MDS. (See CLEARING DTC [IMMOBILIZER SYSTEM] .) Perform the DTC inspection for the immobilizer system using the M-MDS. (See DTC INSPECTION [IMMOBILIZER SYSTEM] .) Security indicator light: 11, DTC B10D9:87/P1260:00 displayed?	Yes	Replace the push button start, then go to the next step. (See PUSH BUTTON START REMOVAL/INSTALLATION .)
5		No	Go to Step 7.
6	VERIFY THAT REPAIRS HAVE BEEN COMPLETED Reconnect all the disconnected connectors. Remove the ROOM 15 A fuse. Reconnect the disconnected negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .) Clear DTC for the immobilizer system using the M-MDS. (See CLEARING DTC [IMMOBILIZER SYSTEM] .) Perform the DTC inspection for the immobilizer system using the M-MDS. (See DTC INSPECTION [IMMOBILIZER SYSTEM] .) Security indicator light: 11, DTC B10D9:87/P1260:00 displayed?	Yes	Repeat the inspection from Step 1. If the malfunction recurs, replace the start stop unit, then go to the next step. (See START STOP UNIT REMOVAL/INSTALLATION .)
6		No	Go to the next step.
7	VERIFY IF OTHER DTCs DISPLAYED Are any other DTCs displayed?	Yes	Repair the malfunctioning part according to the applicable DTC troubleshooting. (See DTC TABLE [IMMOBILIZER SYSTEM] .)
7		No	DTC troubleshooting completed.