Nissan Pathfinder (2010 year). Instruction — part 518
PCS
SIGNAL BUFFER SYSTEM
PCS-9
< FUNCTION DIAGNOSIS >
[IPDM E/R]
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SIGNAL BUFFER SYSTEM
System Diagram
INFOID:0000000005260279
System Description
INFOID:0000000005260280
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
.
AWNIA0174GB
2010 Pathfinder
PCS-10
< FUNCTION DIAGNOSIS >
[IPDM E/R]
POWER CONSUMPTION CONTROL SYSTEM
POWER CONSUMPTION CONTROL SYSTEM
System Diagram
INFOID:0000000005260281
System Description
INFOID:0000000005260282
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
2010 Pathfinder
PCS
POWER CONSUMPTION CONTROL SYSTEM
PCS-11
< FUNCTION DIAGNOSIS >
[IPDM E/R]
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Component Parts Location
INFOID:0000000005260283
1.
IPDM E/R E118, E119, E120, E121,
E122, E123, E124
2.
Combination meter M24
3.
BCM (view with lower instrument
panel LH removed) M18, M19, M20
ALMIA0311ZZ
2010 Pathfinder
PCS-12
< FUNCTION DIAGNOSIS >
[IPDM E/R]
DIAGNOSIS SYSTEM (IPDM E/R)
DIAGNOSIS SYSTEM (IPDM E/R)
Diagnosis Description
INFOID:0000000005260284
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 low warning indicator
• Oil pressure gauge
• Rear window defogger
• Front wipers
• Tail, license and parking lamps
• Front fog lamps (if equipped)
• Headlamps (Hi, Lo)
• A/C compressor (magnetic clutch)
• Cooling fan
Operation Procedure
1. Close the hood and front door RH, and lift the wiper arms from the windshield (to prevent windshield dam-
age due to wiper operation).
NOTE:
When auto active test is performed with hood opened, sprinkle water on windshield before hand.
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.
4. Turn the ignition switch ON within 10 seconds. After that the horn sounds once and the auto active test
starts.
5. 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
(with Intelligent Key system),
(without Intelligent Key system).
• Do not start the engine.
Inspection in Auto Active Test Mode
When auto active test mode is actuated, the following 7 steps are repeated 3 times.
Operation
sequence
Inspection Location
Operation
1
Rear window defogger
10 seconds
2
Front wipers
LO for 5 seconds
→
HI for 5 seconds
WKIA4991E
2010 Pathfinder
PCS
DIAGNOSIS SYSTEM (IPDM E/R)
PCS-13
< FUNCTION DIAGNOSIS >
[IPDM E/R]
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Concept of auto active test
• IPDM E/R starts the auto active test with the door switch signals transmitted by BCM via CAN communica-
tion. Therefore, the CAN communication line between IPDM E/R and BCM is considered normal if the auto
active test starts successfully.
• The auto active test facilitates troubleshooting if any systems controlled by IPDM E/R cannot be operated.
Diagnosis chart in auto active test mode
3
Tail, license, front fog and parking lamps
10 seconds
4
Headlamps
LO for 10 seconds
→
HI on-off for 5 seconds
5
A/C compressor (magnetic clutch)
ON
⇔
OFF 5 times
6
Cooling fan
10 seconds
Operation
sequence
Inspection Location
Operation
AWMIA1124GB
Symptom
Inspection contents
Possible cause
Oil pressure low warning indicator does not operate
Perform auto active test.
Does the oil pressure low
warning indicator operate?
YES
• IPDM E/R signal input cir-
cuit
• ECM signal input circuit
• CAN communication signal
between ECM and combi-
nation meter
NO
• CAN communication signal
between IPDM E/R, BCM
and combination meter
Oil pressure gauge does not operate
Perform auto active test.
Does the oil pressure gauge
operate?
YES
IPDM E/R signal input circuit
NO
• CAN communication signal
between IPDM E/R, BCM
and combination meter
Rear window defogger does not operate
Perform auto active test.
Does the rear window defog-
ger operate?
YES
BCM signal input circuit
NO
• Harness or connector be-
tween A/C and AV switch
assembly and AV control
unit
• CAN communication signal
between BCM and IPDM E/
R
2010 Pathfinder
PCS-14
< FUNCTION DIAGNOSIS >
[IPDM E/R]
DIAGNOSIS SYSTEM (IPDM E/R)
CONSULT - III Function (IPDM E/R)
INFOID:0000000005260285
APPLICATION ITEM
CONSULT-III performs the following functions via CAN communication with IPDM E/R.
SELF DIAGNOSTIC
DATA MONITOR
Monitor item
Any of the following components do not operate
• Front wipers
• Tail lamps
• License plate lamps
• Parking lamps
• Front fog lamps (if equipped)
• Headlamps (Hi, Lo)
Perform auto active test.
Does the applicable system
operate?
YES
BCM signal input system
NO
• Lamp or front wiper motor
malfunction
• Lamp or front wiper motor
ground circuit
• Harness or connector be-
tween IPDM E/R and appli-
cable system
• IPDM E/R (integrated relay
malfunction)
A/C compressor does not operate
Perform auto active test.
Does the A/C compressor op-
erate?
YES
• BCM signal input circuit
• CAN communication signal
between BCM and ECM
• CAN communication signal
between ECM and IPDM E/
R
NO
• Magnetic clutch malfunction
• Harness or connector be-
tween IPDM E/R and mag-
netic clutch
• IPDM E/R (integrated relay
malfunction)
Cooling fan does not operate
Perform auto active test.
Does the cooling fan operate?
YES
• ECM signal input circuit
• CAN communication signal
between ECM and IPDM E/
R
NO
• Cooling fan motor malfunc-
tion
• Harness or connector be-
tween IPDM E/R and cool-
ing fan
• IPDM E/R (integrated relay
malfunction)
Symptom
Inspection contents
Possible cause
Diagnosis mode
Description
Self Diagnostic 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.
Active Test
IPDM E/R can provide a drive signal to electronic components to check their operations.
CAN Diag Support Monitor
The results of transmit/receive diagnosis of CAN communication can be read.
Monitor Item
[Unit]
MAIN SIG-
NALS
Description
MOTOR FAN REQ
[1/2/3/4]
×
Displays the status of the cooling fan speed request signal received from ECM via
CAN communication.
AC COMP REQ
[OFF/ON]
×
Displays the status of the A/C request signal received from AV control unit via
CAN communication.
2010 Pathfinder
PCS
DIAGNOSIS SYSTEM (IPDM E/R)
PCS-15
< FUNCTION DIAGNOSIS >
[IPDM E/R]
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ACTIVE TEST
Test item
TAIL&CLR REQ
[OFF/ON]
×
Displays the status of the position light request signal received from BCM via CAN
communication.
HL LO REQ
[OFF/ON]
×
Displays the status of the low beam request signal received from BCM via CAN
communication.
HL HI REQ
[OFF/ON]
×
Displays the status of the high beam request signal received from BCM via CAN
communication.
FR FOG REQ
[OFF/ON]
×
Displays the status of the front fog lamp request signal received from BCM via
CAN communication.
FR WIP REQ
[STOP/1LOW/LOW/HI]
×
Displays the status of the front wiper request signal received from BCM via CAN
communication.
WIP AUTO STOP
[STOP P/ACT P]
×
Displays the status of the front wiper auto stop signal judged by IPDM E/R.
WIP PROT
[OFF/Block]
×
Displays the status of the front wiper fail-safe operation judged by IPDM E/R.
ST RLY REQ
[OFF/ON]
Displays the status of the starter request signal received from ECM via CAN com-
munication.
IGN RLY
[OFF/ON]
×
Displays the status of the ignition relay judged by IPDM E/R.
RR DEF REQ
[OFF/ON]
×
Displays the status of the rear defogger request signal received from AV control
unit via CAN communication.
OIL P SW
[Open/Close]
Displays the status of the oil pressure switch judged by IPDM E/R.
DTRL REQ
[OFF]
Displays the status of the daytime light request signal received from BCM via CAN
communication.
THFT HRN REQ
[OFF/ON]
Displays the status of the theft warning horn request signal received from BCM
via CAN communication.
HORN CHIRP
[OFF/ON]
Displays the status of the horn reminder signal received from BCM via CAN com-
munication.
Monitor Item
[Unit]
MAIN SIG-
NALS
Description
Test item
Operation
Description
REAR DEFOGGER
OFF
OFF
ON
Operates rear window defogger relay.
FRONT WIPER
OFF
OFF
LO
Operates the front wiper relay.
HI
Operates the front wiper relay and front wiper high relay.
MOTOR FAN
1
OFF
2
OFF
3
Operates the cooling fan relay.
4
Operates the cooling fan relay.
EXTERNAL LAMPS
Off
OFF
TAIL
Operates the tail lamp relay.
Lo
Operates the headlamp low relay.
Hi
Operates the headlamp low relay and the headlamp (LH/RH) high relays alter-
nately at 1 second intervals.
Fog
Operates the front fog lamp relay
HORN
ON
Operates horn relay for 20 ms.
2010 Pathfinder
PCS-16
< COMPONENT DIAGNOSIS >
[IPDM E/R]
U1000 CAN COMM CIRCUIT
COMPONENT DIAGNOSIS
U1000 CAN COMM CIRCUIT
Description
INFOID:0000000005260286
.
DTC Logic
INFOID:0000000005260287
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
Diagnosis Procedure
INFOID:0000000005260288
1.
PERFORM SELF DIAGNOSTIC
1. Turn ignition switch ON and wait for 2 seconds or more.
2. Check “SELF-DIAG RESULTS” of IPDM E/R.
Is “CAN COMM CIRCUIT” displayed?
YES
>> Refer to
LAN-5, "CAN Communication Control Circuit"
.
NO
>> Refer to
GI-37, "Intermittent Incident"
.
DTC
CONSULT-III display
description
DTC Detection Condition
Possible cause
U1000
CAN COMM CIRCUIT
When IPDM E/R cannot communicate CAN
communication signal continuously for 2
seconds or more
In CAN communication system, any item (or items)
of the following listed below is malfunctioning.
• Receiving (TCM)
• Receiving (ECM)
• Receiving (BCM)
• Receiving (Combination meter)
2010 Pathfinder
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