Diagnostic Procedure

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VEHICLE MOVES WHEN ACCELERATING FROM STANDSTILL ON SLOPE (PYUL) 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 DTCs Perform the DTC inspection for the following modules. (See DTC INSPECTION .) PCM TCM Electronically controlled brake unit/DSC HU/CM SAS control module Are any DTCs displayed?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting. (See DTC TABLE [PCM (PYUL)] .) (See DTC TABLE [TCM (PM8AX-EC)] .) (See DTC TABLE [DSC] .) (See DTC TABLE [SAS] .)
2		No	Go to the next step.
3	DETERMINE IF MALFUNCTION CAUSE IS HILL LAUNCH ASSIST FUNCTION OR AT SYSTEM Verify the malfunction symptom on a flat road surface. Does the acceleration lag when accelerating?	Yes	Perform the troubleshooting procedure according to the symptom troubleshooting for [ACCELERATION MALFUNCTION]. (See ACCELERATION MALFUNCTION [PYUL] ).
3		No	Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error. (See MALFUNCTION DIAGNOSIS FLOW [CONTROLLER AREA NETWORK (CAN)] .) If the CAN communication is normal, perform the diagnosis from Step 1. If the malfunction recurs, replace the electronically controlled brake unit/DSC HU/CM, then perform the repair completion verification 1. (BRAKE fluid pressure sensor (built-into electronically controlled brake unit/DSC HU/CM) or electronically controlled brake unit/DSC HU/CM brake pressure hold function malfunction). (Refer to [ELECTRONICALLY CONTROLLED BRAKE UNIT REMOVAL/INSTALLATION ] ). (Refer to [ DSC HU/CM 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 MALFUNCTION DIAGNOSIS FLOW [CONTROLLER AREA NETWORK (CAN)] .) If the CAN communication is normal, perform the diagnosis from Step 1. If the malfunction recurs, replace the PCM. (Refer to [PCM REMOVAL/INSTALLATION ] ).