Nissan X-Trail 32. Instruction — part 1660
PCS-10
< SYSTEM DESCRIPTION >
[IPDM E/R]
SYSTEM
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
IGNITION RELAY CONTROL
• IPDM E/R monitors the voltage at the contact circuit of the ignition relay inside it.
• IPDM E/R judges the ignition relay error if the voltage differs between the contact circuit.
B20DB
HEIGHT SENS INITIALIZE NOT DONE
[MISSING
CALIBRA-
TION]
Right and left headlamp aiming motors fix at the initial
aiming position.
[NOT CON-
FIURED]
B20E2
LED HEADLAMP RH
[CMPNENT
INTERNAL
MLFNCTN]
Transmits the headlamp warning signal (CAN communi-
cation) to the combination meter when the headlamp (LO)
ON conditions are satisfied. (When the ignition switch
turns ON, the headlamp warning is displayed on the infor-
mation display of the combination meter.)
B20E3
LED HEADLAMP LH
[CMPNENT
INTERNAL
MLFNCTN]
Transmits the headlamp warning signal (CAN communi-
cation) to the combination meter when the headlamp (LO)
ON conditions are satisfied. (When the ignition switch
turns ON, the headlamp warning is displayed on the infor-
mation display of the combination meter.)
DTC
CONSULT display description
Fail-safe
Control part
Fail-safe operation
Cooling fan
• The cooling fan is operated at HI operation when the ignition switch is turned ON.
• Turn OFF the cooling fan operation when the ignition switch is turned OFF.
A/C compressor
A/C relay OFF
Control part
Fail-safe operation
Headlamp
• Turns ON the headlamp (LO) when the ignition switch is turned ON.
• Turns OFF the headlamp (LO) when the ignition switch is turned OFF.
• Headlamp (HI): OFF
• Parking lamp
• License plate lamp
• Illumination
• Tail lamp
• Turns ON the tail lamp, parking lamp, license plate lamp and each illumination when the ignition
switch is turned ON.
• Turns OFF the tail lamp, parking lamp, license plate lamp and each illumination when the ignition
switch is turned OFF.
Front wiper
• 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.
Daytime running light
Daytime running light: OFF
Front fog lamp
Front fog lamp: OFF
Ignition relay
The status just before activation of fail-safe is maintained.
Starter motor
Starter control relay: OFF
Headlamp washer
Headlamp washer relay: OFF
Voltage judgment
IPDM E/R judgment
Operation
Ignition relay con-
tact side
Ignition relay con-
trol condition
ON
ON
Ignition relay ON normal
—
OFF
OFF
Ignition relay OFF normal
—
PCS
SYSTEM
PCS-11
< SYSTEM DESCRIPTION >
[IPDM E/R]
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FRONT WIPER CONTROL
IPDM E/R detects front wiper stop position by front wiper stop position signal.
When front wiper stop position signal is in the condition listed below while the front wiper is operating, IPDM E/
R activates the fail-safe.
POWER CONTROL SYSTEM
POWER CONTROL SYSTEM : System Description
INFOID:0000000010741704
SYSTEM DIAGRAM
EACH LAMP CONTROL
IPDM E/R controls the smart FET to control each lamp according to the control signal status of each lamp
received via CAN communication. Refer to
EXL-21, "HEADLAMP SYSTEM : System Description"
(LED head-
EXL-225, "HEADLAMP SYSTEM : System Description"
(halogen headlamp).
COOLING FAN CONTROL
IPDM E/R controls the cooling fan according to the cooling fan control signal received from ECM via CAN
communication. Refer to
EC-57, "COOLING FAN CONTROL : System Description"
SIGNAL BUFFER SYSTEM
ON
OFF
Ignition relay ON stuck
Detects DTC [B20DD: IGN RELAY ON CIRC]
OFF
ON
Ignition relay OFF stuck
Detects DTC [B20DE: IGN RELAY OFF CIRC]
Voltage judgment
IPDM E/R judgment
Operation
Ignition relay con-
tact side
Ignition relay con-
trol condition
Ignition switch
Front wiper switch
Front wiper stop position signal
Fail-safe
ON
OFF
The signal does not change from the battery
voltage for 10 seconds.
Stops front wiper power supply
for 20 seconds
Except OFF
The signal does not change for 10 seconds.
JMMIA1810GB
PCS-12
< SYSTEM DESCRIPTION >
[IPDM E/R]
SYSTEM
SIGNAL BUFFER SYSTEM : System Description
INFOID:0000000010741705
SYSTEM DIAGRAM
DESCRIPTION
• IPDM E/R reads the status of the hood switch and transmits the hood switch signal to ECM and BCM via
CAN communication.
• IPDM E/R receives the oil pressure switch signal from oil pressure switch and transmits the oil pressure sig-
nal to BCM via CAN communication.
• IPDM E/R receives the reverse position signal from transmission range switch and transmits the reverse
position signal to BCM via CAN communication. (CVT models)
• IPDM E/R receives the reverse position signal and neutral position signal from reverse/neutral position
switch. IPDM E/R transmits the reverse position signal and neutral position signal to BCM via CAN commu-
nication. (With MR20 engine with M/T models)
• IPDM E/R receives the reverse position signal from back-up lamp switch and transmits the reverse position
signal to BCM via CAN communication. (With R9M engine and M/T models)
POWER CONSUMPTION CONTROL SYSTEM
POWER CONSUMPTION CONTROL SYSTEM : System Description
INFOID:0000000010741706
SYSTEM DIAGRAM
DESCRIPTION
Outline
JMMIA1830GB
JMMIA1815GB
PCS
SYSTEM
PCS-13
< SYSTEM DESCRIPTION >
[IPDM E/R]
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• 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
- 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
ENERGY MANAGEMENT SYSTEM : System Description
INFOID:0000000010931269
SYSTEM DIAGRAM
IPDM E/R has an energy management system that recognizes the battery status from the battery current sig-
nal from the battery current sensor, the battery temperature sensor signal, and the battery voltage from the
battery and maintains normal battery status. Refer to the following for details.
• Charging system control:
CHG-8, "ENERGY MANAGEMENT SYSTEM : System Description"
• Stop/Start system control:
EC-856, "STOP/START SYSTEM : System Description (CVT models)"
"STOP/START SYSTEM : System Description (M/T models)"
JMMIA1780GB
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