Nissan Maxima. Instruction — part 882
PCS-8
< SYSTEM DESCRIPTION >
[IPDM E/R]
SIGNAL BUFFER SYSTEM
SIGNAL BUFFER SYSTEM
System Diagram
INFOID:0000000009467094
System Description
INFOID:0000000009467095
• IPDM E/R reads the status of the oil pressure switch and transmits the oil pressure switch signal to BCM via
CAN communication.
• IPDM E/R receives the rear window defogger status signal from BCM via CAN communication and transmits
it to ECM via CAN communication.
ALCIA0029GB
PCS
POWER CONSUMPTION CONTROL SYSTEM
PCS-9
< SYSTEM DESCRIPTION >
[IPDM E/R]
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POWER CONSUMPTION CONTROL SYSTEM
System Diagram
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System Description
INFOID:0000000009467097
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
PCS-10
< SYSTEM DESCRIPTION >
[IPDM E/R]
POWER CONSUMPTION CONTROL SYSTEM
Component Parts Location
INFOID:0000000009467098
1.
BCM M16, M17, M18, M19, M20,
M21 (view with instrument panel re-
moved)
2.
Combination meter M24
3.
IPDM E/R E16, E17, E18, E200,
E201, F10
AWMIA1468ZZ
PCS
DIAGNOSIS SYSTEM (IPDM E/R)
PCS-11
< SYSTEM DESCRIPTION >
[IPDM E/R]
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DIAGNOSIS SYSTEM (IPDM E/R)
Diagnosis Description
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AUTO ACTIVE TEST
Description
In auto active test mode, the IPDM E/R sends a drive signal to the following systems to check their operation.
• Oil pressure warning lamp
• Front wiper (LO, HI)
• Parking lamps
• Side marker lamps
• License plate lamps
• Tail lamps
• Front fog lamps (if equipped)
• Headlamps (LO, HI)
• A/C compressor (magnet clutch)
• Cooling fans
Operation Procedure
1. Close the hood and lift the wiper arms from the windshield. (Prevent windshield damage due to wiper
operation)
NOTE:
When auto active test is performed with hood opened, sprinkle water on windshield beforehand.
2. Turn ignition switch OFF.
3. Turn the ignition switch ON, and within 20 seconds, press the front door switch LH 10 times. Then turn the
ignition switch OFF.
CAUTION:
Close front door RH.
4. Turn the ignition switch ON within 10 seconds. After that the horn sounds once and the auto active test
starts.
5. The oil pressure warning lamp starts blinking when the auto active test starts.
6. After a series of the following operations is repeated 3 times, auto active test is completed.
NOTE:
When auto active test mode has to be cancelled halfway through test, turn ignition switch OFF.
CAUTION:
• If auto active test mode cannot be actuated, check door switch system. Refer to
.
• Do not start the engine.
Inspection in Auto Active Test Mode
When auto active test mode is actuated, the following 6 steps are repeated 3 times.
*: Outputs duty ratio of 50% for 5 seconds
→ duty ratio of 100% for 5 seconds on the cooling fan control module.
Operation
sequence
Inspection Location
Operation
1
Oil pressure warning lamp
Blinks continuously during operation of auto active test
2
Front wiper
LO for 5 seconds
→ HI for 5 seconds
3
• Parking lamps
• Side marker lamps
• License plate lamps
• Tail lamps
• Front fog lamps (if equipped)
10 seconds
4
Headlamps
LO
⇔ HI 5 times
5
A/C compressor (magnet clutch)
ON
⇔ OFF 5 times
6
*
Cooling fans
MID for 5 seconds
→ HI for 5 seconds
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