Nissan Frontier. Instruction — part 1040
PCS-4
< SYSTEM DESCRIPTION >
[IPDM E/R]
RELAY CONTROL SYSTEM
Component Parts Location
INFOID:0000000009478237
Fuel pump relay
Fuel pump request signal
ECM (CAN)
Fuel pump
(QR25DE)
(VQ40DE for
USA and
Canada)
(VQ40DE for
Mexico)
Ignition relay
Ignition switch ON signal
Ignition switch
Ignition relay
(QR25DE)
(VQ40DE for
USA and
Canada)
(VQ40DE for
Mexico)
Control relay
Input/output
Transmit unit
Control part
Reference
page
1.
IPDM E/R E118, E119, E120, E121,
E122, E123, E124
AWMIA0532ZZ
PCS
POWER CONTROL SYSTEM
PCS-5
< SYSTEM DESCRIPTION >
[IPDM E/R]
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
POWER CONTROL SYSTEM
System Diagram
INFOID:0000000009478238
System Description
INFOID:0000000009478239
COOLING FAN CONTROL
IPDM E/R controls the cooling fan according to the status of the cooling fan speed request signal received
from ECM via CAN communication. Refer to
.
AWMIA0527GB
PCS-6
< SYSTEM DESCRIPTION >
[IPDM E/R]
SIGNAL BUFFER SYSTEM
SIGNAL BUFFER SYSTEM
System Diagram
INFOID:0000000009478240
System Description
INFOID:0000000009478241
IPDM E/R reads the status of the oil pressure switch and transmits the oil pressure switch signal to BCM via
CAN communication. Refer to
AWMIA1129GB
PCS
POWER CONSUMPTION CONTROL SYSTEM
PCS-7
< SYSTEM DESCRIPTION >
[IPDM E/R]
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
POWER CONSUMPTION CONTROL SYSTEM
System Diagram
INFOID:0000000009478242
System Description
INFOID:0000000009478243
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.
- Front wiper fail-safe operation
- Outputting signals to actuators
- Switches or relays operating
- Auto active test is starting
- Emergency OFF
- 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.
ALCIA0030GB
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