Diagnostic Procedure

VEHICLE MOVES WHEN ACCELERATING FROM STANDSTILL ON SLOPE (SKYACTIV-G) DIAGNOSTIC PROCEDURE

Step	Inspection	Results	Action
1	INSPECT EFFECT OF NON-GENUINE ELECTRICAL ACCESSORY FOR CAUSE OF MALFUNCTION Remove any non-genuine electrical accessory. Verify the malfunction symptom. Does vehicle slip backwards on inclined road surface when accelerating after i-stop operates?	Yes	Go to the next step.
1		No	The system is normal. Explain to the customer that the vehicle slips backwards on an inclined road surface when accelerating after i-stop operates due to the effect of the non-genuine electrical accessory installed.
2	VERIFY DTC Perform the DTC inspection for the following modules. (See DTC INSPECTION .) PCM TCM DSC HU/Control Module (without Mazda M Hybrid) Electronically controlled brake unit (with Mazda M Hybrid) SAS control module DC-DC converter (Mazda M Hybrid) Are any DTCs displayed?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting.
2		No	Go to the next step.
3	DETERMINE IF MALFUNCTION CAUSE IS HILL LAUNCH ASSIST FUNCTION OR ATX SYSTEM Verify the malfunction symptom on a flat road surface. Does the acceleration lag when accelerating?	Yes	Perform the symptom troubleshooting "ACCELERATION MALFUNCTION". (See ACCELERATION MALFUNCTION .)
3		No	Refer to the CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW to inspect for a CAN communication error. If the CAN communication is normal, repeat the inspection from Step 1. If the malfunction recurs, perform the following procedure. Without Mazda M Hybrid: Replace the DSC HU/Control Module. (Brake fluid pressure sensor (built-into DSC HU/Control Module) or DSC HU/Control Module brake pressure hold function malfunction.) With Mazda M Hybrid: Replace the electronically controlled brake unit. (Brake fluid pressure sensor (built-into electronically controlled brake unit) or electronically controlled brake unit brake pressure hold function malfunction.) Perform the repair completion verification 1.
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.

VEHICLE MOVES WHEN ACCELERATING FROM STANDSTILL ON SLOPE - SKYACTIV-G (US) DIAGNOSTIC PROCEDURE

Step	Inspection	Results	Action
1	INSPECT EFFECT OF NON-GENUINE ELECTRICAL ACCESSORY FOR CAUSE OF MALFUNCTION Remove any non-genuine electrical accessory. Verify the malfunction symptom. Does vehicle slip backwards on inclined road surface when accelerating after i-stop operates?	Yes	Go to the next step.
1		No	The system is normal. Explain to the customer that the vehicle slips backwards on an inclined road surface when accelerating after i-stop operates due to the effect of the non-genuine electrical accessory installed.
2	VERIFY DTC Perform the DTC inspection for the following modules. (See DTC INSPECTION .) PCM TCM Electronically controlled brake unit SAS control module DC-DC converter (Mazda M Hybrid) Are any DTCs displayed?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting. (See DTC TABLE [PCM (SKYACTIV-G (US))] .)
2		No	Go to the next step.
3	DETERMINE IF MALFUNCTION CAUSE IS HILL LAUNCH ASSIST FUNCTION OR ATX SYSTEM Verify the malfunction symptom on a flat road surface. Does the acceleration lag when accelerating?	Yes	Perform the symptom troubleshooting "ACCELERATION MALFUNCTION". (See ACCELERATION MALFUNCTION .)
3		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, repeat the inspection from Step 1. If the malfunction recurs, perform the following procedure. Replace the electronically controlled brake unit. (Brake fluid pressure sensor (built-into electronically controlled brake unit) or electronically controlled brake unit brake pressure hold function malfunction.) Perform the repair completion verification 1.
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.
Repair completion verification 2		No	Replace the PCM.