Diagnostic Procedure

I-STOP WARNING LIGHT (AMBER) ILLUMINATES (SKYACTIV-G) DIAGNOSTIC PROCEDURE

Step	Inspection	Results	Action
1	VERIFY DTC Perform the DTC inspection for the following modules. (See DTC INSPECTION . Without Mazda M Hybrid PCM Body control module (BCM) With Mazda M Hybrid PCM DC-DC converter (Mazda M Hybrid) Mazda M Hybrid battery Integrated starter generator (ISG) Electronically controlled brake unit SAS control module TCM Are any DTCs displayed?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting. (See DTC TABLE [DC-DC CONVERTER (MAZDA M HYBRID)] .) (See DTC TABLE [Mazda M Hybrid BATTERY] .) (See DTC TABLE [INTEGRATED STARTER GENERATOR (ISG)] .) (See DTC TABLE [ELECTRONICALLY CONTROLLED BRAKE UNIT] .)
1		No	Go to the next step.
2	DETERMINE IF MALFUNCTION CAUSE IS INSTRUMENT CLUSTER WARNING LIGHT ILLUMINATION CIRCUIT OR ERROR SIGNAL FROM PCM Switch the ignition ON (engine on). Does the i-stop warning light (amber) turn off after illuminating for 1.5 s?	Yes	Go to the next step.
2		No	Replace the instrument cluster, then perform the repair completion verification 1. (See INSTRUMENT CLUSTER REMOVAL/INSTALLATION .)
Repair completion verification 1	VERIFY THAT VEHICLE IS REPAIRED Install/connect the part removed/disconnected during the troubleshooting procedure. Has the malfunction symptom been eliminated?	Yes	Complete the symptom troubleshooting. (Explain contents of repair to customer)
Repair completion verification 1		No	Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error. If the CAN communication is normal, perform the diagnosis from Step 1. If the malfunction recurs, go to the next step.
Repair completion verification 2	VERIFY IF MALFUNCTION IS CAUSED BY NOT PERFORMING PCM REPROGRAMMING Verify repair information and verify that there is a new calibration in the PCM. Is there a new calibration in the PCM?	Yes	Perform the PCM reprogramming and verify if the malfunction symptom was corrected. If the malfunction recurs, replace the PCM.
Repair completion verification 2		No	Replace the PCM.

I-STOP WARNING LIGHT (AMBER) ILLUMINATES (SKYACTIV-G - US) DIAGNOSTIC PROCEDURE

Step	Inspection	Results	Action
1	VERIFY DTC Perform the DTC inspection for the following modules. (See DTC INSPECTION .) PCM DC-DC converter (Mazda M Hybrid) Mazda M Hybrid battery Integrated starter generator (ISG) Electronically controlled brake unit SAS control module TCM Are any DTCs displayed?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting. (See DTC TABLE [PCM (SKYACTIV-G (US))] .) (See DTC TABLE [DC-DC CONVERTER (MAZDA M HYBRID)] .) (See DTC TABLE [Mazda M Hybrid BATTERY] .) (See DTC TABLE [INTEGRATED STARTER GENERATOR (ISG)] (See DTC TABLE [ELECTRONICALLY CONTROLLED BRAKE UNIT] .) (See ON-BOARD DIAGNOSTIC SYSTEM DTC TABLE [TCM (ET6A-EL, ET6AX-EL) (US)] .)
1		No	Go to the next step.
2	DETERMINE IF MALFUNCTION CAUSE IS INSTRUMENT CLUSTER WARNING LIGHT ILLUMINATION CIRCUIT OR ERROR SIGNAL FROM PCM Switch the ignition ON (engine on). Does the i-stop warning light (amber) turn off after illuminating for 1.5 s?	Yes	Go to the next step.
2		No	Replace the instrument cluster, then perform the repair completion verification 1. (See INSTRUMENT CLUSTER REMOVAL/INSTALLATION .)
Repair completion verification 1	VERIFY THAT VEHICLE IS REPAIRED Install/connect the part removed/disconnected during the troubleshooting procedure. Has the malfunction symptom been eliminated?	Yes	Complete the symptom troubleshooting. (Explain contents of repair to customer)
Repair completion verification 1		No	Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error. (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(US)] .) If the CAN communication is normal, perform the diagnosis from Step 1. If the malfunction recurs, go to the next step.
Repair completion verification 2	VERIFY IF MALFUNCTION IS CAUSED BY NOT PERFORMING PCM REPROGRAMMING Verify repair information and verify that there is a new calibration in the PCM. Is there a new calibration in the PCM?	Yes	Perform the PCM reprogramming and verify if the malfunction symptom was corrected. If the malfunction recurs, replace the PCM. (See PCM REMOVAL/INSTALLATION [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (US))] .)
Repair completion verification 2		No	Replace the PCM. (See PCM REMOVAL/INSTALLATION [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (US))] .)