Nissan Juke F15. Manual - part 1016

PCS-8

< SYSTEM DESCRIPTION >

[IPDM E/R]

SYSTEM

NOTE:
BCM controls the starter relay.

RELAY CONTROL SYSTEM : Fail-safe

INFOID:0000000012197151

CAN COMMUNICATION CONTROL

When CAN communication with ECM and BCM is impossible, IPDM E/R performs fail-safe control. After CAN

communication recovers normally, it also returns to normal control.

If No CAN Communication Is Available With ECM

If No CAN Communication Is Available With BCM

Tail lamp relay

Position light request signal

BCM (CAN)

• Parking lamp
• License plate lamp
• Tail lamp
• Side marker lamp

EXL-15

Illumination

INL-6

• Front wiper relay
• Front wiper HI/LO relay

Front wiper request signal

BCM (CAN)

Front wiper motor

WW-7

Front wiper stop position sig-
nal

Front wiper motor

Rear window defogger

Rear window defogger switch 
signal

BCM (CAN)

Rear window defogger

DEF-7

Horn relay

Theft warning horn request 
signal

BCM (CAN)

Horn

SEC-16

• Starter relay

NOTE

• Starter control relay

Starter control relay signal

BCM (CAN)

Starter motor

SEC-9

,

SEC-9

Starter relay control signal

Transmission range switch 
(CVT models)

Clutch interlock switch (M/T 
models)

Cooling fan relay

Cooling fan speed request

ECM (CAN)

Cooling fan control 
module

EC-64

A/C relay

A/C compressor request sig-
nal

ECM (CAN)

A/C compressor
(Magnet clutch)

HAC-15

Daytime running light re-
lay 2
(Except for NISMO mod-
els)

• Daytime running light re-

quest signal

• Low beam request signal

BCM (CAN)

• Headlamp (LO)
• Parking lamp
• License plate lamp
• Tail lamp

EXL-14

Ignition relay

Ignition switch ON signal

BCM (CAN)

Each control unit, sen-
sor, actuator and relay 
(Ignition power supply) 

PCS-32

Vehicle speed signal (Meter)

Combination meter (CAN)

Push-button ignition switch 
signal

Push-button ignition switch

Control relay

Input/output

Transmit unit

Control part

Reference page

Control part

Fail-safe operation

Cooling fan

• Transmits the pulse duty signal (PWM signal) 100% when the ignition switch is turned ON.
• Transmits the pulse duty signal (PWM signal) 0% when the ignition switch is turned OFF.

A/C compressor

A/C relay OFF

Alternator

Outputs the power generation command signal (PWM signal) 0%

PCS

SYSTEM

PCS-9

< SYSTEM DESCRIPTION >

[IPDM E/R]

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IGNITION RELAY MALFUNCTION DETECTION FUNCTION

• IPDM E/R monitors the voltage at the contact circuit and excitation coil circuit of the ignition relay inside it. 

• IPDM E/R judges the ignition relay error if the voltage differs between the contact circuit and the excitation

coil circuit.

• If the ignition relay cannot turn OFF due to contact seizure, it activates the tail lamp relay for 10 minutes to

alert the user to the ignition relay malfunction when the ignition switch is turned OFF.

FRONT WIPER PROTECTION FUNCTION

IPDM E/R detects front wiper stop position by a front wiper stop position signal.

When a front wiper stop position signal is in the conditions listed below, IPDM E/R stops power supply to wiper

after repeating a front wiper 10 seconds activation and 20 seconds stop.

NOTE:

This operation status can be confirmed on the IPDM E/R “Data Monitor” that displays “BLOCK” for the item

“WIP PROT” while the wiper is stopped.

STARTER MOTOR PROTECTION FUNCTION

IPDM E/R turns OFF the starter control relay to protect the starter motor when the starter control relay remains

active for 90 seconds.

POWER CONTROL SYSTEM

Control part

Fail-safe operation

Headlamp

• Turns ON the headlamp low relay when the ignition switch is turned ON
• Turns OFF the headlamp low relay when the ignition switch is turned OFF
• Headlamp high relay OFF

• Parking lamp
• License plate lamp
• Illumination
• Tail  lamp
• Side marker lamp

• Turns ON the tail lamp relay when the ignition switch is turned ON
• Turns OFF the tail lamp relay when the ignition switch is turned OFF

Front wiper motor

• The status just before activation of fail-safe control is maintained until the ignition switch is turned OFF while 

the front wiper is operating at LO or HI speed.

• The wiper is operated at LO speed until the ignition switch is turned OFF if the fail-safe control is activated 

while the front wiper is set in the INT mode and the front wiper motor is operating.

• Returns automatically wiper to stop position when ignition switch is turned ON if fail-safe control is activated 

while front wiper motor is operated and wiper stop in the other position than stop position.

• The status is held at service position if the fail-safe control is activated while the service position function is 

operating.

Front fog lamp

Front fog lamp relay OFF

Daytime running light

Daytime running light relay OFF

Rear window defogger

Rear window defogger relay OFF

Horn

Horn OFF

Ignition relay

The status just before activation of fail-safe is maintained.

Starter motor

Starter control relay OFF

Voltage judgment

IPDM E/R judgment

Operation

Ignition relay contact 

side

Ignition relay excitation 

coil side

ON

ON

Ignition relay ON normal

—

OFF

OFF

Ignition relay OFF normal

—

ON

OFF

Ignition relay ON stuck

• Detects DTC “B2098: IGN RELAY ON CIRC”
• Turns ON the tail lamp relay for 10 minutes

OFF

ON

Ignition relay OFF stuck

Detects DTC “B2099: IGN RELAY OFF CIRC”

Ignition switch

Front wiper switch

Front wiper stop position signal

ON

OFF

The front wiper stop position signal (stop position) cannot be input for 10 seconds.

ON

The front wiper stop position signal does not change for 10 seconds.

PCS-10

< SYSTEM DESCRIPTION >

[IPDM E/R]

SYSTEM

POWER CONTROL SYSTEM : System Diagram

INFOID:0000000012197152

POWER CONTROL SYSTEM : System Description

INFOID:0000000012197153

COOLING FAN CONTROL

IPDM E/R outputs pulse duty signal (PWM signal) to the cooling fan control module according to the status of

the cooling fan speed request signal received from ECM via CAN communication. Refer to 

EC-64, "COOLING

FAN CONTROL : System Diagram"

.

CAUTION:

After ignition switch OFF, IPDM E/R turn the cooling fan relay ON and outputs pulse duty signal (PWM

signal) to the cooling fan control module according to the request signal from ECM for cooling the

engine according to the situation.

ALTERNATOR CONTROL

IPDM E/R outputs power generation command signal (PWM signal) to the alternator according to the status of

the power generation command value signal received from ECM via CAN communication. Refer to 

CHG-8,

"POWER GENERATION VOLTAGE VARIABLE CONTROL SYSTEM : System Diagram"

.

SIGNAL BUFFER SYSTEM
SIGNAL BUFFER SYSTEM : System Diagram

INFOID:0000000012197154

SIGNAL BUFFER SYSTEM : System Description

INFOID:0000000012197155

IPDM E/R receives the rear window defogger control signal from BCM via CAN communication and transmits

the rear window defogger status signal to ECM via CAN communication. Refer to 

DEF-7, "WITH AUTO A/C :

System Diagram"

.

POWER CONSUMPTION CONTROL SYSTEM

JSMIA0004GB

JMMIA0589GB

PCS

SYSTEM

PCS-11

< SYSTEM DESCRIPTION >

[IPDM E/R]

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POWER CONSUMPTION CONTROL SYSTEM : System Diagram

INFOID:0000000012197156

POWER CONSUMPTION CONTROL SYSTEM : System Description

INFOID:0000000012197157

OUTLINE

• IPDM E/R incorporates a power consumption control function that reduces the power consumption accord-

ing to the vehicle status. 

• IPDM E/R changes its status (control mode) with the sleep wake up signal received from BCM via CAN com-

munication.

Normal mode (wake-up)

- CAN communication is normally performed with other control units.

- Individual unit control by IPDM E/R is normally performed.

Low power consumption mode (sleep)

- Low power consumption control is active.

- CAN transmission is stopped.

SLEEP MODE ACTIVATION

• IPDM E/R judges that the sleep-ready conditions are fulfilled when the ignition switch is OFF and none of the

conditions below are present. Then it transmits a sleep-ready signal (ready) to BCM via CAN communica-

tion.

- Outputting signals to actuators

- Switches or relays operating

- Output requests are being received from control units via CAN communication.

• IPDM E/R stops CAN communication and enters the low power consumption mode when it receives a sleep

wake up signal (sleep) from BCM and the sleep-ready conditions are fulfilled.

WAKE-UP OPERATION

• IPDM E/R changes from the low power consumption mode to the normal mode when it receives a sleep

wake-up signal (wake up) from BCM or any of the following conditions is fulfilled. In addition, it transmits a

sleep-ready signal (not-ready) to BCM via CAN communication to report the CAN communication start.

- Ignition switch ON

- An output request is received from a control unit via CAN communication.

JMMIA0579GB