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	VERIFY PCM DTC Using the M-MDS, perform the PCM DTC inspection. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .) Are any DTCs present?	Yes	Go to applicable DTC inspection. (See DTC TABLE [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .) DTC troubleshooting completed, then go to the next step.
1		No	Go to the next step.
2	INSPECT BATTERY Inspect the battery. (See BATTERY INSPECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .) Is there any malfunction?	Yes	Charge or replace the battery, then go to Step 7. (See BATTERY RECHARGING [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .) (See BATTERY REMOVAL/INSTALLATION [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .)
2		No	Go to the next step.
3	INSPECT GENERATOR Inspect the generator. (See GENERATOR INSPECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .) Is there any malfunction?	Yes	Replace the generator, then go to Step7. (See GENERATOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .)
3		No	Go to the next step.
4	INSPECT FUSE CONDITION Is the fuse (C/U IG1 15A) normal?	Yes	Go to the next step.
4	INSPECT FUSE CONDITION Is the fuse (C/U IG1 15A) normal?	No	If the fuse is blown: Refer to the wiring diagram and verify whether or not there is a common connector between fuse and laser sensor terminal E. If there is a common connector: Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to ground. Repair or replace the malfunctioning part. If there is no common connector: Repair or replace the wiring harness which has a short to ground. Replace the fuse. If the fuse is damaged: Replace the fuse. Go to Step7.
5	INSPECT LASER SENSOR POWER SUPPLY CIRCUIT FOR OPEN CIRCUIT Switch the ignition OFF. Disconnect the laser sensor connector. Switch the ignition ON (engine off). Measure the voltage between laser sensor terminal E (wiring harness-side) and body ground. Is the voltage 10 V or more ?	Yes	Go to the next Step.
5		No	Refer to the wiring diagram and verify whether or not there is a common connector between battery and laser sensor terminal E. If there is a common connector: Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit. Repair or replace the malfunctioning part. If there is no common connector: Repair or replace the wiring harness which has an open circuit. Go to Step7.
6	INSPECT LASER SENSOR GROUND CIRCUIT FOR OPEN CIRCUIT OR POOR GROUND Switch the ignition OFF. Disconnect the laser sensor connector. Inspect for continuity between laser sensor terminal G (wiring harness-side) and body ground. Is the resistance 0-1 ohm ?	Yes	Go to the next step.
6		No	If the open circuit could be detected in the wiring harness: Refer to the wiring diagram and verify whether or not there is a common connector between laser sensor terminal G and body ground. If there is a common connector: Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit. Repair or replace the malfunctioning part. If there is no common connector: Repair or replace the wiring harness which has an open circuit. Go to the next step. If the resistance is out of specification: Refer to the wiring diagram and verify whether or not there is a common connector between laser sensor terminal G and body ground. If there is a common connector: Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit. Repair or replace the malfunctioning part. If there is no common connector: Repair or replace the wiring harness which has a poor ground. Go to the next step.
7	VERIFY DTC TROUBLESHOOTING COMPLETED Using the M-MDS, clear the DTC from the laser sensor. (See CLEARING DTC [LASER SENSOR] .) Using the M-MDS, perform the laser sensor DTC inspection. (See DTC INSPECTION [LASER SENSOR] .) Is the same DTC present?	Yes	Repeat the inspection from Step1. If the malfunction recurs, replace the laser sensor, then go to the next step. (See LASER SENSOR REMOVAL/INSTALLATION .)
7		No	Go to the next step.
8	VERIFY NO DTC IS PRESENT Are any DTCs present?	Yes	Go to applicable DTC inspection. (See DTC TABLE [LASER SENSOR] .)
8	VERIFY NO DTC IS PRESENT Are any DTCs present?	No	DTC troubleshooting completed.