Nissan Rogue (T33) 2021-Present Service Manual: Ipdm E/r :: System Description

Nissan Rogue (T33) 2021-Present Service Manual / Electrical & Power Control :: Power Control System / Ipdm E/r :: System Description

Component Parts

Component Parts Location

: Front of vehicle

A. Engine compartment LH side
No. Component Function
1. IPDM E/R (Intelligent Power Distribution Module Engine Room) Refer to System Description.

System

Relay Control System

System Description

SYSTEM DIAGRAM

DESCRIPTION

IPDM E/R activates the internal control circuit to perform the relay ON-OFF control according to the input signals from various sensors and the request signals received from control units via CAN communication.

NOTE:

To prevent to the parts, IPDM E/R integrated relays cannot be removed.

Control relay Input/output Transmit unit Control part Reference

  • Front wiper relay

  • Front wiper high relay

 Front wiper request signal BCM (CAN) Front wiper motor System Description
Front wiper stop position signal Front wiper motor
Starter relay Ignition ON signal BCM (CAN) Starter motor System Description
Cranking enable (ECM) signal ECM (CAN)
Cranking enable (TCM) signal TCM (CAN)
Ignition relay Ignition ON signal BCM (CAN) Ignition power supply System Description

NOTE:

ECM controls the following relays:

  • ECM relay

  • Fuel pump relay

Smart Field-Effect Transistor (fet)

System Description

System Description

A Smart Field-Effect Transistor (FET) is a transistor used to monitor and control current flow on module outputs. The IPDM E/R uses a Smart FET protection strategy to prevent module damage in the event of excessive current flow. The Smart FET protection strategy monitors its outputs for excessive current, and when a fault occurs, shuts down the output and records a DTC.

COMPONENT FUNCTION WITHIN SYSTEM

  • Smart FET turns the each lamps ON according to the request from BCM.

  • Smart FET turns the A/C compressor (magnetic clutch) ON according to the request from ECM.

INDIVIDUAL COMPONENT FUNCTION

Smart FET supplies power supply voltage to the each lamp and the A/C compressor (magnetic clutch).

COMPONENT OPERATION

Smart FET, that uses MOS field effect transistor, is adopted for each lamp and A/C compressor (magnetic clutch) control.

NOTE:

A MOS field effect transistor is a transistor in which the gate is composed of a metal-oxide-semiconductor (MOS). Field effect transistor is controlled by voltage, while ordinary transistor is controlled by current. Electrode of field effect transistor is called source, drain, or gate, while electrode of ordinary transistor is called emitter, collector, or base.

Power Control System

System Description

SYSTEM DIAGRAM

Component Function
BCM BCM transmits each lamp ON/OFF request signal and Nissan Ariya vehicle status signal to the IPDM E/R via CAN communication.
ECM

  • ECM calculates the cooling level, and transmits the cooling fan speed request signal to the IPDM E/R via CAN communication.

  • ECM transmits the A/C compressor request signal to the IPDM E/R via CAN communication according to the status of the engine and refrigerant pressure.
A/C auto amp. A/C auto amp. transmits the ECV control signal to the IPDM E/R via CAN communication.
A/C amp. A/C amp. transmits the ECV control signal to the IPDM E/R via CAN communication.
IPDM E/R

  • IPDM E/R controls the Smart FET to control each lamp according to the control signal status of each lamp received from the BCM via CAN communication. Refer to the following:

    • Headlamp system: Refer to System Description.

    • Daytime running light system: Refer to System Description.

    • Parking, license plate, side marker and tail lamp system: Refer to System Description.

  • IPDM E/R controls the Smart FET to control the A/C compressor (magnetic clutch) according to the A/C compressor request signal received from the ECM via CAN communication. Refer to A/C Compressor Control (with automatic air conditioning) or A/C Compressor Control (with manual air conditioning).

  • IPDM E/R controls the cooling fan control module-1 and cooling fan control module-2 according to the cooling fan speed request signal received from the ECM via CAN communication. Refer to System Description (Cooling Fan Control System).

  • IPDM E/R controls the A/C compressor (ECV) according to the ECV control signal received from the A/C auto amp. (with automatic air conditioning) or A/C amp. (with manual air conditioning) via CAN communication. Refer to A/C Compressor Control (with automatic air conditioning) or A/C Compressor Control (with manual air conditioning).
Smart FET Refer to System Description.
LED headlamp control module IPDM E/R supplies power supply voltage to each lamp, and turns the each lamp ON.
Parking lamp, license plate lamp, side marker lamp and tail lamp
A/C compressor (magnetic clutch) IPDM E/R supplies power supply voltage to the A/C compressor (magnetic clutch), and turns the magnetic clutch ON.

  • Cooling fan control module 1

  • Cooling fan control module 2

 IPDM E/R controls each actuator.
A/C compressor (ECV)

SIGNAL TRANSMISSION FUNCTION LIST

Signal name Input Output Description
Passing request signal BCM IPDM E/R (CAN) Transmits the passing request signal via CAN communication.
Low beam request signal BCM IPDM E/R (CAN) Transmits the low beam request signal via CAN communication.
Position light request signal BCM IPDM E/R (CAN) Transmits the position light request signal via CAN communication.
Nissan Ariya Vehicle status signal BCM IPDM E/R (CAN) Transmits the vehicle status signal via CAN communication.
Cooling fan speed request signal ECM IPDM E/R (CAN) Transmits the cooling fan speed request signal via CAN communication.
A/C compressor request signal ECM IPDM E/R (CAN) Transmits the A/C compressor request signal via CAN communication.
ECV control signal A/C auto amp. IPDM E/R (CAN) Transmits the ECV control signal via CAN communication.
ECV control signal A/C amp. IPDM E/R (CAN) Transmits the ECV control signal via CAN communication.

Signal Buffer System

System Description

SYSTEM DIAGRAM

Component Function
Hood switch Detects the hood condition (open or close), and transmits the hood switch signal to the IPDM E/R.
IPDM E/R IPDM E/R has the signal transmission function that transmits each input signal to each unit.

SIGNAL TRANSMISSION FUNCTION LIST

Signal name Input Output Description
Hood switch signal Hood switch BCM Inputs the hood switch signal and transmits the hood switch signal via CAN communication.

Power Consumption Control System

System Description

SYSTEM DIAGRAM

INPUT SIGNAL AND OUTPUT SIGNAL

Major signal transmission between each unit via CAN communication is shown in the following table:

Component Function
BCM

  • BCM receives the sleep-ready signal (ready) from each unit via CAN communication.

  • BCM receives the sleep-ready signal (not-ready) from each unit via CAN communication.

  • BCM transmits the sleep wake up signal to each unit when condition is established, and then goes into each mode.

  • BCM transmits the sleep wake up signal (sleep) to each unit when condition is established, and then goes into each mode.

  • BCM transmits the sleep wake up signal (wake up) to each unit when condition is established, and then goes into each mode.
IPDM E/R

  • Transmits the sleep-ready signal (ready) to the BCM via CAN communication.

  • Transmits the sleep-ready up signal (not-ready) to the BCM via CAN communication.

  • Receives the sleep wake up signal from the BCM via CAN communication.

  • Receives the sleep wake up signal (sleep) signal from the BCM via CAN communication.

  • Receives the sleep wake up signal (wake up) signal from the BCM via CAN communication.
Combination meter
Intelligent Key unit
AV control unit
TCU
8 CH CAN gateway
ABS actuator and electric unit (control unit)
Each switch Each switch transmits the Nissan Ariya vehicle status to the BCM.

DESCRIPTION

Outline

  • IPDM E/R incorporates a power consumption control function that reduces the power consumption according to the Nissan Ariya vehicle status.

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

    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 communication.

    • Outputting signals to actuators

    • 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

    • Hood switch status changes.

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

Energy Management System

System Description

SYSTEM DIAGRAM

Component Function
12V battery current sensor Current sensor Detects the charging/discharging current of battery.
Temperature sensor Detects the temperature around the battery.
Battery Battery supplies power supply voltage to each unit and part.
IPDM E/R IPDM E/R transmits the generator voltage request signal to the ECM via CAN communication according to the battery voltage, battery current sensor signal and battery temperature sensor signal.
ECM ECM controls the power generation voltage to the generator according to the request from the IPDM E/R received via CAN communication.

SIGNAL TRANSMISSION FUNCTION LIST

Signal name Input Output Description
Battery current sensor signal 12V battery current sensor IPDM E/R (LIN) Transmits the battery current sensor signal via LIN communication.
Battery temperature sensor signal 12V battery current sensor IPDM E/R (LIN) Transmits the battery temperature sensor signal via LIN communication.
Generator voltage request signal IPDM E/R ECM (CAN) Transmits the generator voltage request signal via CAN communication.

DESCRIPTION

IPDM E/R has an energy management system that recognizes the battery status from the following signals and maintains normal battery status. Refer to System Description.

  • Battery current sensor signal (received from 12V battery current sensor via LIN communication)

  • Battery temperature sensor signal (received from 12V battery current sensor via LIN communication)

  • Battery voltage (detected from battery)

Diagnosis System (ipdm E/r)

CONSULT Function (IPDM E/R)

APPLICATION ITEM

CONSULT performs the following functions via CAN communication with BCM.

Diagnosis mode Function Description
Self diagnosis result Displays the diagnosis results judged by IPDM E/R.
Data monitor Displays the real-time input/output data from IPDM E/R input/output data.
Work supports The settings for IPDM E/R functions can be changed.
Active test IPDM E/R can provide a drive signal to electronic components to check their operation.
ECU identification Allows confirmation of IPDM E/R part number.
Replace ECU Writes the Nissan Ariya vehicle specification when replacing the IPDM E/R

ECU IDENTIFICATION

The IPDM E/R part number is displayed.

SELF DIAGNOSIS RESULT

Refer to DTC Index.

DATA MONITOR

NOTE:

The following table includes information (items) inapplicable to this Nissan Ariya vehicle. For information (items) applicable to this vehicle, refer to CONSULT display items.

Monitor item Description

Parking lamp (LH) req (LIN)

[Open/Close] 		Displays the status of the parking lamp LH request signal that the IPDM E/R transmits via LIN communication.

DTRL (LH) req (LIN)

[Open/Close] 		Displays the status of the daytime running light LH request signal that the IPDM E/R transmits via LIN communication.

Headlamp LO (LH) req (LIN)

[Open/Close] 		Displays the status of the headlamp LO LH request signal that the IPDM E/R transmits via LIN communication.

Headlamp HI (LH) req (LIN)

[Open/Close] 		Displays the status of the headlamp HI LH request signal that the IPDM E/R transmits via LIN communication.

Parking lamp (RH) req (LIN)

[Open/Close] 		Displays the status of the parking lamp RH request signal that the IPDM E/R transmits via LIN communication.

DTRL (RH) req (LIN)

[Open/Close] 		Displays the status of the daytime running light RH request signal that the IPDM E/R transmits via LIN communication.

Headlamp HI (RH) req (LIN)

[Open/Close] 		Displays the status of the headlamp HI RH request signal that the IPDM E/R transmits via LIN communication.

Headlamp LO (RH) req (LIN)

[Open/Close] 		Displays the status of the headlamp LO RH request signal that the IPDM E/R transmits via LIN communication.

Battery status

[OK/NG] 		Monitor the battery status from battery output.

Headlamp warning RH (LIN)

[Open/Close] 		Displays the status of low beam RH malfunction received from LED headlamp control module RH via LIN communication.

Headlamp warning LH (LIN)

[Open/Close] 		Displays the status of low beam LH malfunction received from LED headlamp control module RH via LIN communication.

Front wiper relay

[Off/On] 		Displays the front wiper relay drive status judged by the IPDM E/R.

Horn relay

[Off/On] 		Displays the horn relay drive status judged by the IPDM E/R.

Front wiper HI/LO relay

[Off/On] 		Displays the front wiper high relay drive status judged by the IPDM E/R.

Compressor

[Off/On] 		Displays the A/C compressor (magnetic clutch) output status judged by the IPDM E/R.

Cooling fan relay-2

[Off/On] 		Displays the cooling fan relay drive status judged by the IPDM E/R.

Ignition relay

[Open/Close] 		Displays the status of the ignition relay judged by IPDM E/R.

Hood switch

[Open/Close] 		Displays the status of the hood switch judged by the IPDM E/R.

Starter relay & starter control relay status

[Off, Off/On, Off/invalid/On, On] 		Displays the status of the starter relay and starter cut relay that the IPDM E/R transmits via CAN communication.

Reverse signal (CAN)

[Off/On/NG] 		Displays the status of the reverse position signal that the IPDM E/R transmits via CAN communication.

A/C relay

[Off/On] 		Displays the status of the A/C compressor (magnetic clutch) output that the IPDM E/R transmits via CAN communication.

Neutral switch (CAN)

[Off/On/NG] 		Displays the status of the neutral position signal from the TCM via CAN communication.

Hood switch (CAN)

[NG/Open/Close] 		Displays the status of the hood switch signal that IPDM E/R transmits via CAN communication.

Ignition power supply

[Off/On] 		Displays the supply status of the ignition power supply that the IPDM E/R transmits via CAN communication.

Front wiper stop position

[Active/Stop position] 		Displays the status of the front wiper stop position signal that the IPDM E/R transmits via CAN communication.

Stop/start status

[Prohibit/Permit/No req] 		Displays the status of the idling stop system received from the ECM via CAN communication.

Compressor (ECV) status

[OK/NG] 		Displays the status of A/C compressor (ECV) malfunction diagnosis that the IPDM E/R transmits via CAN communication.

Shift position

[P/R/N/D/M/NG] 		Displays the status of the shift position signal received from the TCM via CAN communication.

Front fog lamp request

[Off/On]

Displays the status of the front fog light request signal received from the BCM via CAN communication.

NOTE:

This item is only monitored on Nissan Ariya vehicles with front fog lamp.

Ignition switch

[Off/No request/On/START] 		Displays the status of the ignition switch ON signal received from the BCM via CAN communication.

Position light request

[Off/On] 		Displays the status of the position light request signal received from the BCM via CAN communication.

Low beam request

[Off/On] 		Displays the status of the low beam request signal received from the BCM via CAN communication.

Horn request

[NG/Return/Thft warn/Hrn chirp/Panic/Off/No request] 		Displays the status of the horn request signal received from the BCM via CAN communication.

High beam request

[Off/On] 		Displays the status of the high beam request signal received from the BCM via CAN communication.

Front wiper request

[Off/On] 		Displays the status of the front wiper request signal received from the BCM via CAN communication.

Daytime running light request

[Off/On] 		Displays the status of the daytime running light request signal received from the BCM via CAN communication.

Cranking enable-ECM

[Prohibit/Permit/Stop/No req] 		Displays the status of the cranking enable signal received from the ECM via CAN communication.

Cranking enable-TCM

[Unknown/Prohibit/Permit/Stop] 		Displays the status of the cranking enable signal received from the TCM via CAN communication.

Easy fill tire alert horn req

[Off/On] 		Displays the status of the horn request signal (easy fill tire alert horn request) received from the BCM via CAN communication.

Compressor request

[Off/On] 		Displays the status of the compressor request signal received via CAN communication.

COOLING FAN REQ

[%] 		Displays the status of the cooling fan request signal received via CAN communication.

BATTERY VOLTAGE

[V] 		Monitor the battery voltage from battery output.

COMP ECV CURRENT

[A] 		Display the status of electric current output to the A/C compressor (ECV) that the IPDM E/R transmits via CAN communication.

Front fog lamp (LH)

[%]

Displays the front fog lamp LH output (PWM) status of the IPDM E/R.

NOTE:

This item is only monitored on Nissan Ariya vehicles with front fog lamp.

Front fog lamp (RH)

[%]

Displays the front fog lamp RH output (PWM) status of the IPDM E/R.

NOTE:

This item is only monitored on Nissan Ariya vehicles with front fog lamp.

Tail lamp (LH)

[%] 		Displays the tail lamp LH output (PWM) status of the IPDM E/R.

Tail lamp (RH)

[%] 		Displays the tail lamp RH output (PWM) status of the IPDM E/R.

Headlamp LO (RH)

[%] 		Displays the headlamp LO RH output (PWM) status of the IPDM E/R.

Headlamp LO (LH)

[%] 		Displays the headlamp LO LH output (PWM) status of the IPDM E/R.

Parking/DTRL (LH) output (LIN)

[%] 		Displays the parking/daytime running light LH control signal output (PWM) status that the IPDM e/R transmits via LIN communication.

Parking/DTRL (RH) output (LIN)

[%] 		Displays the parking/daytime running light RH control signal output (PWM) status that the IPDM e/R transmits via LIN communication.

T LAMP LH CIRC MALFUNCTN

[―]

Monitor the number of times that the Smart FET in the IPDM E/R reaches the retry upper limit of the tail lamp LH circuit.

NOTE:

When the number of tail lamp LH circuit retries count is 20, this item counts 1.

NMB T LAMP LH CIRC RETRY

[―]

Monitor the number of times that the Smart FET in the IPDM E/R permits the retry of the tail lamp LH circuit.

NOTE:

When the number of short circuits in the tail lamp LH circuit count is 5 and ignition switch OFF to ON operation is detected, this item counts 1.

Fr fog lamp (LH) circ malfunctn

[―]

Monitor the number of times that the Smart FET in the IPDM E/R reaches the retry upper limit of the front fog lamp LH circuit.

NOTE:

  • When the number of front fog lamp LH circuit retries count is 20, this item counts 1.

  • This item is only monitored on Nissan Ariya vehicles with front fog lamp.

T LAMP RH CIRC MALFUNCTN

[―]

Monitor the number of times that the Smart FET in the IPDM E/R reaches the retry upper limit of the tail lamp RH circuit.

NOTE:

When the number of tail lamp RH circuit retries count is 20, this item counts 1.

NMB T LAMP RH CIRC RETRY

[―]

Monitor the number of times that the Smart FET in the IPDM E/R permits the retry of the tail lamp RH circuit.

NOTE:

When the number of short circuits in the tail lamp RH circuit count is 5 and ignition switch OFF to ON operation is detected, this item counts 1.

NMB T LAMP RH CIRC SHORT

[―] 		Monitor the number of times that the Smart FET in the IPDM E/R detects the over current of the tail lamp RH circuit.

NMB F FOG LH CIRC RETRY

[―]

Monitor the number of times that the Smart FET in the IPDM E/R permits the retry of the front fog lamp LH circuit.

NOTE:

  • When the number of short circuits in the front fog lamp LH circuit count is 5 and ignition switch OFF to ON operation is detected, this item counts 1.

  • This item is only monitored on Nissan Ariya vehicles with front fog lamp.

NMB F FOG LH CIRC SHORT

[―]

Monitor the number of times that the Smart FET in the IPDM E/R detects the over current of the front fog lamp LH circuit.

NOTE:

This item is only monitored on Nissan Ariya vehicles with front fog lamp.

F FOG RH CIRC MALFUNCTN

[―]

Monitor the number of times that the Smart FET in the IPDM E/R reaches the retry upper limit of the front fog lamp RH circuit.

NOTE:

  • When the number of front fog lamp RH circuit retries count is 20, this item counts 1.

  • This item is only monitored on Nissan Ariya vehicles with front fog lamp.

NMB F FOG RH CIRC RETRY

[―]

Monitor the number of times that the Smart FET in the IPDM E/R permits the retry of the front fog lamp RH circuit.

NOTE:

  • When the number of short circuits in the front fog lamp RH circuit count is 5 and ignition switch OFF to ON operation is detected, this item counts 1.

  • This item is only monitored on Nissan Ariya vehicles with front fog lamp.

NMB F FOG RH CIRC SHORT

[―]

Monitor the number of times that the Smart FET in the IPDM E/R detects the over current of the front fog lamp RH circuit.

NOTE:

This item is only monitored only Nissan Ariya vehicles with front fog lamp.

NMB T LAMP LH CIRC SHORT

[―] 		Monitor the number of times that the Smart FET in the IPDM E/R detects the over current of the tail lamp LH circuit.

Nmb DTRL (LH) circ retry

[―]

Monitor the number of times that the Smart FET in the IPDM E/R permits the retry of the daytime running light LH circuit.

NOTE:

When the number of short circuits in the daytime running light LH circuit count is 5 and ignition switch OFF to ON operation is detected, this item counts 1.

BAT DISCHARGE COUNT

[―]

Monitor the cumulative discharge value of the battery.

NOTE:

  • When 65000 or more is counted, replace the battery.

  • This item is monitored on Nissan Ariya vehicles with idling stop system.

Cooling fan relay-3

[%] 		Displays the cooling fan relay-3 output (PWM) status of the IPDM E/R.

Compressor (ECV) duty

[%] 		Displays the A/C compressor (ECV) output (PWM) status of the IPDM E/R.

Battery current sen value (LIN)

[A] 		Displays the status of the battery current value received from the battery current sensor via LIN communication.

ACTIVE TEST

Test item Operation Description
HORN OFF Horn OFF.
ON Operates the horn relay for 20ms.

WORK SUPPORTS

Work item Description
Battery discharging current integrated value clear In this mode, battery discharging current integrated value is cleared.

REPLACE ECU

Refer to Description.

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