Nissan Ariya: Ev Control System

Nissan Ariya (FE0) 2023-2025 Service & Repair Manual / Electric Power Train / Ev Control System :: Symptom Diagnosis / Ev Control System

Ev Control System Symptoms
Climate Ctrl. Timer Does Not Start
Decelerating Force Changes
Full Charge Cannot Be Achieved
Immediate Charge Does Not Start
Low Electrical Consumption
No Regeneration
Normal Charge Does Not Start
Normal Charge Is Not Completed
Power Switch Does Not Turn Off
Quick Charge Does Not Start
Quick Charge Is Not Completed
Ready Status Cannot Be Achieved
Remote Climate Control Does Not Start
Timer Charge and Remote Charge Does Not Start
Unable to Travel

Ev Control System Symptoms

Symptom Table

NOTE:

Perform self-diagnosis with CONSULT before conducting trouble diagnosis for each symptom.

If DTC is detected, first perform trouble diagnosis of the corresponding DTC.

Symptom	Reference page
READY status cannot be achieved	Refer to Diagnosis Procedure.
Unable to travel	Refer to Diagnosis Procedure.
Low electrical consumption	Refer to Diagnosis Procedure.
Power switch does not turn OFF	Refer to Diagnosis Procedure.
No regeneration	Refer to Diagnosis Procedure.
Decelerating force changes	Refer to Diagnosis Procedure.
Normal charge does not start	Refer to Diagnosis Procedure.
Timer charge or remote charge does not start	Refer to Diagnosis Procedure.
Immediate charge does not start	Refer to Diagnosis Procedure.
Normal charge does not completed	Refer to Diagnosis Procedure.
Quick charge does not start	Refer to Diagnosis Procedure.
Quick charge does not completed	Refer to Diagnosis Procedure.
Full cahrge cannot be achieved	Refer to Diagnosis Procedure.
Timer A/C does not operate	Refer to Diagnosis Procedure.
A/C before getting in does not operate	Refer to Diagnosis Procedure.

Climate Ctrl. Timer Does Not Start

Diagnosis Procedure

Symptom			Possible cause	Action
Timer A/C does not operate	Start condition of the timer A/C is not satisfied		Timer A/C is not set	Set timer A/C
			A/C before getting in is set	Normal operation NOTE: If timer A/C and A/C before getting in are requested at the same time, A/C before getting in is given priority.
			When plug is OFF, the setting to operate is ON. However, when plug is OFF, charge amount is at empty lamp indicate level.	Charge and set charge amount to turn OFF status of empty lamp
	A/C system does not start	A/C auto amp does not recognize timer A/C	A/C auto amp is abnormal	Perform self-diagnosis of A/C auto amp
	A/C system does not start	—	A/C system power supply is abnormal	Refer to Diagnosis Procedure.

Decelerating Force Changes

Diagnosis Procedure

Symptom			Possible cause	Action
Decelerating force changes	Amount of regeneration is limited	Inverter (front) limits output.	Fail-safe of inverter (front).	Refer to Fail-safe.
		Inverter (front) limits output.	Temperature of front traction motor or inverter (front) is high.	Check self-diagnosis result of inverter (front).
		LBC limits output.	Fail-safe of LBC.	Refer to Fail-safe(66kWh LI-ION BATTERY), Fail-safe(91kWh LI-ION BATTERY).
			Damaged bus bar (connecting part of Li-ion battery module).	Check bus bar.
			Degradation in Li-ion battery temperature sensor characteristics	Check the “POWER LIMIT CAUSE” in the DATA MONITOR of VCM
			Temperature of Li-ion battery is too high/low.	Check the “POWER LIMIT CAUSE” in the DATA MONITOR of VCM
			Li-ion battery is fully charged	Normal operation
		ABS actuator and C/U limits output.	Abnormal Nissan Ariya vehicle speed sensor of ABS actuator and C/U	Perform self-diagnosis of ABS actuator and C/U
	Amount of target regeneration changes	Drive mode is changed.	Change to ECO mode, SPORT mode, B range, or e-Pedal.	Normal operation
		Drive mode is changed.	ECO mode, SPORT mode, B range, or e-Pedal is cancelled	Perform self-diagnosis of IDM, electric controlled intelligent brake unit, ABS actuator & C/U, and VCM, if e-Pedal is released automatically
		—	Accelerator pedal is depressed	Normal operation

Full Charge Cannot Be Achieved

Diagnosis Procedure

When not connected to V2H

Symptom			Possible cause	Action
Full charge cannot be achieved	—	—	Quick charge starts under extremely low charge level of Li-ion battery	Perform quick charge again
	Charge power is low or charging stops.	Power consumption is large during charge.	A/C power consumption is large.	Refer to Diagnosis Procedure.
	Charge power is low or charging stops.	Power consumption is large during charge.	Power consumption of auxiliaries is large.	Refer to Diagnosis Procedure.
	Meter indication does not reach maximum.	—	Abnormal LBC	Refer to Work flow.
	Meter indication does not reach maximum.	—	Abnormal LBC	Refer to Work flow.
	Charge power is low	Chargeable power is limited	LBC limits chargeable power	Check self-diagnosis result of Li-ion battery

When connected to V2H

Symptom			Possible cause	Action
Full charge cannot be achieved	Charge with V2H connection is not fully charged	—	Fully charged, but then discharged	Normal operation
			Power consumption on the residential side is large	Normal operation NOTE: Charge power of V2H varies depending on power usage in the house, so charging time may be longer.
			DTC is detected on the Nissan Ariya vehicle	Check self-diagnosis result
			V2H detects abnormality	Check error message that is displayed on V2H
			V2H detects abnormality	Check error message that is displayed on V2H
		Li-ion battery charge level gauge in combination meter does not maximize even when V2H is set to 100% charge	Normal operation	— NOTE: Since calculation method of charge amount is different between V2H and VCM, the Li-ion battery charge level gauge may not display full charge even if battery is 100% charged with V2H.

Immediate Charge Does Not Start

Diagnosis Procedure

Symptom			Possible cause	Action
Immediate charge does not start	Normal charge is not possible		Normal charge start conditions are not satisfied.	Refer to Diagnosis Procedure.
	Immediate charge start condition are not satisfied.	—	Timer charge is set.	Turn ON the immediate charging switch.
		Immediate charge is not accepted even if immediate charge switch is operated.	More than 15 minutes passed from operating immediate charge switch to connecting charge connector.	Connect charge connector within 15 minutes after operating immediate charge switch.
			Abnormal immediate charging switch Abnormal immediate charging switch signal circuit.	Refer to Diagnosis Procedure.
	—		Others	Refer to Symptom Description.

Low Electrical Consumption

Diagnosis Procedure

Symptom			Possible cause	Action
Low electrical consumption	Front traction motor and rear traction motor requires a large amount of power.	Running resistance of tires is high.	Low tire pressure.	Adjust tire pressure
		Running resistance of tires is high.	Tire size is not of standard size.	'Install standard-size tires.
		Parking brake is applied.	Abnormal electric parking brake control module.	Perform self-diagnosis of electric parking brake control module.
		Parking brake is applied.	Abnormal parking actuator.
		Brake applied.	Brake dragging.	Check reduction dragging
		Sliding resistance of reduction gear is high	Abnormal reduction gear.	Check reduction gear.
	A/C requires a large amount of power.	Electric compressor requires large amount of power.	Set temperature is low.	Adjust the set temperature
		Electric compressor requires large amount of power.	Abnormal A/C auto amp.	Perform self-diagnosis of A/C auto amp.
		PTC heater requires large amount of power.	Set temperature is high.	Adjust the set temperature
		PTC heater requires large amount of power.	Abnormal A/C auto amp.	Perform self-diagnosis of A/C auto amp.
	Low efficient Li-ion battery.		Incorrect service plug connection.	Check installation condition of service plug.

No Regeneration

Diagnosis Procedure

Symptom			Possible cause	Action
No regeneration	Amount of regeneration is limited.	Inverter (front) limits output	Fail-safe of inverter (front).	Refer to Fail-safe.
		Inverter (front) limits output	Temperature of front traction motor or inverter (front) is high.	Check the self-diagnosis result of inverter (front).
		LBC limits output.	Fail-safe of LBC	Refer to Fail-safe(66kWh LI-ION BATTERY), Fail-safe(91kWh LI-ION BATTERY).
			Damaged bus bar (connecting part of Li-ion battery module)	Check bus bar.
			Degradation in Li-ion battery temperature sensor characteristics	Check self-diagnosis result of Li-ion battery.
			Temperature of Li-ion battery is too high/low.	Check self-diagnosis result of Li-ion battery.
			Li-ion battery is fully charged.	Normal operation
		ABS actuator and C/U limits output.	ABS operates	Normal operation
		ABS actuator and C/U limits output.	Abnormal the Nissan Ariya vehicle speed sensor of ABS actuator C/U	Perform self-diagnosis of ABS actuator C/U
		Electric brake control unit limits output.	Fail-safe of electric brake control unit	Refer to Fail-safe.
	Regeneration prohibit conditions are satisfied.	ABS actuator and C/U limits output.	VDC operates	Normal operation


		—	Under full braking.	Normal operation
	Amount of target regeneration changes.	Driving mode is changed.	ECO mode or B mode is cancelled	Normal operation
		Driving mode is changed.	Range changes to N.	If e-Pedal is released without permission, self-diagnosis of IDM, electric control brake unit, ABS actuator C / U, and VCM will be performed.
		—	Brake applied during sharp turn.	Normal operation
		—	Slip is detected	Normal operation

Normal Charge Does Not Start

Diagnosis Procedure

Symptom	Possible cause	Action
Normal charge does not start	There is no power the outlet	Confirm that there is not a power failure
	There is no power the outlet	Check that breaker is ON
	Plug is not connected correctly	Confirm the plug is connected to the outlet correctly
	Selector lever is in except P range	Shift selector lever in P range
	Electric shift control system error	Perform self-diagnosis of Electric shift control module
	Li-ion battery is fully charged	Normal operation
	Timer charge is set	Timer charge is cancelled, or immediate charge switch is ON.
	Both normal charge connector and quick charge connector are connected.	Disconnect a connector of quick charge connector.
	Normal charge connector is not connected correctly.	Insert normal charge connector until click sound can be heard.
	Connection of normal charge connector and normal charge port is abnormal.	Check normal charge connector and normal charge port
	VCM prohibits charging. (In-Nissan Ariya vehicle charger, VCM, LBC etc. are abnormal)	Perform self-diagnosis of detect DTC.Refer to Fail-safe. Refer to DTC Index.
	Any failure of Nissan Ariya vehicle, EVSE, or power outlet	Refer to Symptom Table.
	Others	Refer to Symptom Description.

Normal Charge Is Not Completed

Diagnosis Procedure

Symptom			Possible cause	Action
Normal charge does not completed	Charge is not completed even if it is fully charged		Abnormal LBC	Perform self diagnosis of LBC

Power Switch Does Not Turn Off

Diagnosis Procedure

Symptom			Possible cause	Action
Power switch does not turn OFF	VCM recognizes that power switch is not OFF	Power is continuously supplied to the power ON power supply terminal of VCM.	Abnormal power switch.	Refer to Component Function Check.
	Immediate charging switch signal is continuously received.		Abnormal immediate charging switch signal circuit.	Refer to Diagnosis Procedure.
	Immediate charging switch signal is continuously received.		Abnormal immediate charging switch.	Refer to Diagnosis Procedure.

Quick Charge Does Not Start

Diagnosis Procedure

When not connected to V2H

Symptom			Possible cause	Action
Quick charge does not start	Quick charge start condition is not satisfied	VCM recognizes that selector lever is in except P range.	Electric shift control system error	Perform self-diagnosis of electric shift control module
		VCM recognizes that selector lever is in except P range.	Selector lever is in except P range	Selector lever is shifted to P range
		—	Power switch is not OFF	Normal operation
		VCM recognizes that quick charge connector and normal charge connector are simultaneously connected.	Both normal charge connector and quick charge connector are connected at the same time.	Normal operation Refer to Symptom Description.
			Connection detection circuit of normal charge port is abnormal.	Check normal charge port.
			In-Nissan Ariya vehicle charger is abnormal	Perform self-diagnosis of in-vehicle charger
		VCM recognizes that quick charge connector is not connected.	Quick charge connector is not connected.	Normal operation
			Connection detection circuit of quick charge port is abnormal.	Perform self-diagnosis of VCM
				Check the harness between quick charge port and VCM
				Check quick charge port
		VCM prohibits charging	Fail-safe of VCM.	Refer to Fail-safe.
		Activation signal from quick charger cannot be received	Activation signal circuit malfunctions	Perform self-diagnosis of VCM
				Check the harness between quick charge port and VCM
				Check quick charge port
		Judged as full charge	—	Check quick charger
	Quick charger does no permit quick charge	Quick charger detects high voltage circuit insulation degradation	—	Refer to Diagnosis Description.
	Quick charger does no permit quick charge	Quick charger malfunctions	—	Check quick charger

When connected to V2H

Symptom			Possible cause	Action
Quick charge does not start	Nissan Ariya Vehicle does not permit	VCM recognizes that selector lever is in except P range.	Electric shift control system error	Perform self-diagnosis of electric shift control module
		VCM recognizes that selector lever is in except P range.	Selector lever is in except P range	Selector lever is shifted to P range
		—	Power switch is not OFF	Normal operation
		VCM recognizes that quick charge connector and normal charge connector are simultaneously connected.	Both normal charge connector and quick charge connector are connected at the same time.	Normal operation. Refer to Symptom Description.
			Connection detection circuit of normal charge port is abnormal.	Check normal charge port.
			In-Nissan Ariya vehicle charger is abnormal	Perform self-diagnosis of in-vehicle charger
		VCM recognizes that quick charge connector is not connected.	Quick charge connector is not connected.	Normal operation
			Connection detection circuit of quick charge port is abnormal.	Perform self-diagnosis of VCM
				Check the harness between quick charge port and VCM
				Check quick charge port
		VCM prohibits charging	Fail-safe of VCM.	Refer to Fail-safe.
		Activation signal from V2H cannot be received	Activation signal circuit malfunctions	Perform self-diagnosis of VCM
				Check the harness between quick charge port and VCM
				Check quick charge port
		Judged as full charge	—	Check V2H
		V2H detects high voltage circuit insulation degradation	—	Normal operation
	V2H does not permit	V2H malfunctions	—	Check V2H

Quick Charge Is Not Completed

Diagnosis Procedure

When not connected to V2H

Symptom		Possible cause	Action
Quick charge does not completed	Charge is not completed even if it is fully charged	Abnormal LBC	Perform self-diagnosis of LBC
	―	DTC is detected	Perform full self-diagnosis
	―	Quick charger malfunctions	Check quick charger

When connected to V2H

Symptom	Possible cause	Action
Quick charge is not completed	Power consumption on the residential side is large	Normal operation
	DTC is detected	Perform full self-diagnosis
	V2H malfunctions	Check V2H
	V2H charge request activates	Normal operation

Ready Status Cannot Be Achieved

Diagnosis Procedure

Symptom			Possible cause	Action
READY status cannot be achieved	READY condition is not satisfied	BCM does not output READY signal	BCM error	Preform self diagnosis of BCM
		READY signal is not input to VCM	CAN communication error	Check CAN communication between BCM and VCM
		VCM recognizes that select lever is except P and N range.	Electric shift control system error	Preform self diagnosis of electric shift control system
		VCM recognizes that charge connector is connected	Normal charge connector connection detection circuit error	Preform self diagnosis of VCM Preform self diagnosis of normal charger
		VCM recognizes that charge connector is connected	Quick charge connector connection detection circuit error
		READY is prohibited by VCM failsafe	EV control system error	Preform self diagnosis of VCM, ACU and LBC
		VCM recognizes remaining energy is too low	Remaining energy is too low	Charge Li-ion battery
		VCM recognizes remaining energy is too low	LBC error	Preform self diagnosis of LBC
	Despite READY state, READY to drive indicator does not turn ON		Abnormal combination meter.	Preform self diagnosis of combination meter

Remote Climate Control Does Not Start

Diagnosis Procedure

Symptom			Possible cause	Action
A/C before getting in does not operate	Start condition of A/C before getting in is not satisfied	—	Li-ion battery charge level is low ^*	Charge Li-ion battery
		Request signal of A/C before getting in cannot be received	A/C before getting in request is transmitted from a place where radio waves do not reach	Transmit A/C request before getting in again in a place where radio waves can reach
		Request signal of A/C before getting in cannot be received	Nissan Ariya Vehicle is out of radio wave range
	A/C system does not start	A/C auto amp does not recognize A/C before getting in	A/C auto amp is abnormal	Perform self-diagnosis of A/C auto amp
	A/C system does not start	—	A/C system power supply is abnormal	Refer to Diagnosis Procedure.

*：Only when there is no AC power input

Timer Charge and Remote Charge Does Not Start

Diagnosis Procedure

Symptom			Possible cause	Action
Timer charge or remote charge does not start	Normal charge is not possible.		Normal charge start conditions are not satisfied.	Refer to Diagnosis Procedure.
	Timer charge start conditions are not satisfied.	—	Timer charge is not set.	Set timer charge.
	Remote charge start conditions are not satisfied.	Remote charge request is not sent to Information Center (Nissan CARWINGS Data Center).	Request is sent from out of service area.	Send remote charge request in service area.
	Remote charge start conditions are not satisfied.	Remote charge request is not sent from the Information Center (Nissan CARWINGS Data Center).	Nissan Ariya Vehicle is located out of service area.	Send remote charge request in service area.
	—		Others	Refer to Symptom Description.

Unable to Travel

Diagnosis Procedure

Symptom			Possible cause	Action
Unable to travel	Drive force is not generated.	Inverter (front) requests output limit.	Fail-safe of inverter (front)	Refer to Fail-safe.
		LBC requests output limit.	Fail-safe of LBC	Refer to Fail-safe(66kWh LI-ION BATTERY), Fail-safe(91kWh LI-ION BATTERY).
			The bus bar (Li-ion battery module connection part) is broken	Check bus bar.
			Li-ion battery is fully	Normal operation
		No transmission of motor output to drive wheels	Abnormal reduction gear	Check reduction gear.
	Drive force is generated.	Brake is applied	Brake dragging.	Check for brake dragging.
		A brake signal is input to ABS actuator and C/U.	Abnormal stop lamp switch signal line.	Check the signal line between stop lamp switch and ABS actuator and C/U
		PKB is applied	Brake drag	Check brake drag