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Control Description

VCM judges the operation mode from signals sent by various sensors, switches, and ECUs, and controls the start/stop of the EV system by activating the relays accordingly.

Power Switch ON

Fig 1: EV System Start Up Control Operation Diagram (Power Switch ON)
G08702953Courtesy of NISSAN NORTH AMERICA, INC.

When the power ON power supply from the IPDM E/R enters VCM, VCM turns ON the M/C relay to supply power to each ECU in the EV system.

READY

Fig 2: EV System Start Up Control Operation Diagram (Ready)
G08702954Courtesy of NISSAN NORTH AMERICA, INC.

When the driver operates the POWER switch while depressing the brake pedal, VCM turns ON the M/C relay to supply power to each ECU in the EV system. Furthermore, VCM activates the F/S relay to start the power supply to the system main relay.

NOTE: VCM inhibits the vehicle is set to READY in following conditions:

In Normal Charging

Fig 3: EV System Start Up Control Operation Diagram (In Normal Charging)
G08702955Courtesy of NISSAN NORTH AMERICA, INC.

If VCM judges that the system is in normal charge mode, VCM turns ON the M/C relay to supply power to each ECU in the EV system. Furthermore, VCM activates the F/S relay to start the power supply to the system main relay.

NOTE: Normal charging does not start with the power switch ON.

In Quick Charging

Fig 4: EV System Start Up Control Operation Diagram (In Quick Charging)
G08702956Courtesy of NISSAN NORTH AMERICA, INC.

When VCM judges that the system is in quick charge mode, VCM turns ON the M/C relay to supply power to each ECU in the EV system. VCM also activates the F/S CHG relay to supply power to the quick charge relay inside PDM (Power Delivery Module). Furthermore, VCM activates the F/S relay to start the power supply to the system main relay.

When Air Conditioner Is Operating (Power OFF)

When air conditioner is activated (e.g. remote climate control and Climate Ctrl. Timer), VCM turns ON the M/C relay to start the EV system. VCM also activates the A/C relay to supply power to the air conditioner system. Furthermore, VCM activates the F/S relay to start the power supply to the system main relay.

When Automatic 12V Battery Charge Control is Operating

When VCM judges that the 12V battery requires automatic charging, VCM turns ON the M/C relay to start the EV system. Furthermore, VCM activates the F/S relay to start the power supply to the system main relay. Relay Activation Matrix

RELAY ACTIVATION MATRIX CONDITION DESCRIPTION

Relay Condition
POWER ON READY Charging When 12V battery is charged Climate Ctrl. Timer
Normal charge Quick charge
F/S relay ON ON ON ON ON ON
M/C relay ON ON ON ON ON ON
A/C relay ON ON ON ON ON ON
F/S CHG relay OFF OFF OFF ON OFF OFF
RELAY ACTIVATION MATRIX CONDITION DESCRIPTION

Relay Condition
Charging When 12V battery is charged Climate Ctrl. Timer Remote climate control
Normal charge Quick charge
F/S relay ON ON ON ON ON
M/C relay ON ON ON ON ON
A/C relay OFF OFF OFF ON ON
F/S CHG relay OFF ON OFF OFF ON(1)
(1) Only during quick charging
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