Nissan Pathfinder (2007 year). Manual — part 337
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
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2007 Pathfinder
IPDM E/R STATUS CONTROL
In order to save power, IPDM E/R switches status by itself based on each operating condition.
1.
CAN communication status
●
CAN communication is normally performed with other control units.
●
Individual unit control by IPDM E/R is normally performed.
●
When sleep request signal is received from BCM, mode is switched to sleep waiting status.
2.
Sleep waiting status
●
Process to stop CAN communication is activated.
●
All systems controlled by IPDM E/R are stopped. When 3 seconds have elapsed after CAN communi-
cation with other control units is stopped, mode switches to sleep status.
3.
Sleep status
●
IPDM E/R operates in low current-consumption mode.
●
CAN communication is stopped.
●
When a change in CAN communication signal is detected, mode switches to CAN communication sta-
tus.
●
When a change in ignition switch signal is detected, mode switches to CAN communication status.
CAN Communication System Description
EKS00G8F
Refer to
Function of Detecting Ignition Relay Malfunction
EKS00G8G
●
When the integrated ignition relay is stuck in a "closed contact" position and cannot be turned OFF, IPDM
E/R turns ON tail and parking lamps for 10 minutes to indicate IPDM E/R malfunction.
●
When the state of the integrated ignition relay does not agree with the state of the ignition switch signal
received via CAN communication, the IPDM E/R activates the tail lamp relay.
NOTE:
When the ignition switch is turned ON, the tail lamps are OFF.
Cooling fan
●
With the ignition switch ON, the cooling fan HI operates.
●
With the ignition switch OFF, the cooling fan stops.
Front wiper
Until the ignition switch is turned off, the front wiper LO and HI remains in the same status it
was in just before fail
−
safe control was initiated.
Rear window defogger
Rear window defogger relay OFF
A/C compressor
A/C compressor OFF
Front fog lamps
Front fog lamp relay OFF
Controlled system
Fail-safe mode
Ignition switch signal
Ignition relay status
Tail lamp relay
ON
ON —
OFF
OFF —
ON
OFF
—
OFF
ON ON
(10
minutes)
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IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
2007 Pathfinder
CONSULT-II Function (IPDM E/R)
EKS00G8H
CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.
CONSULT-II START PROCEDURE
Refer to
GI-38, "CONSULT-II Start Procedure"
SELF-DIAGNOSTIC RESULTS
Display Item List
NOTE:
The details for display of the period are as follows:
●
CRNT: Error currently detected with IPDM E/R.
●
PAST: Error detected in the past and placed in IPDM E/R memory.
IPDM E/R Diagnostic Mode
Description
SELF-DIAG RESULTS
Displays IPDM E/R self-diagnosis results.
DATA MONITOR
Displays IPDM E/R input/output data in real time.
CAN DIAG SUPPORT MNTR
The result of transmit/receive diagnosis of CAN communication can be read.
ACTIVE TEST
Operation of electrical loads can be checked by sending drive signal to them.
Display items
CONSULT-II
display code
Malfunction detection
TIME
Possible causes
CRNT
PAST
NO DTC IS
DETECTED. FURTHER
TESTING MAY BE
REQUIRED.
—
—
—
—
—
CAN COMM CIRC
U1000
●
If CAN communication reception/transmission
data has a malfunction, or if any of the control
units fail, data reception/transmission cannot
be confirmed.
●
When the data in CAN communication is not
received before the specified time.
X
X
Any of items listed
below have errors:
●
TRANSMIT DIAG
●
ECM
●
BCM/SEC
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
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DATA MONITOR
All Signals, Main Signals, Selection From Menu
NOTE:
●
Perform monitoring of IPDM E/R data with the ignition switch ON. When the ignition switch is in ACC posi-
tion, display may not be correct.
●
(*1) This item is displayed, but does not function.
CAN DIAG SUPPORT MNTR
Refer to
ACTIVE TEST
Display Item List
Item name
CONSULT-II
screen display
Display or unit
Monitor item selection
Description
ALL
SIGNALS
MAIN
SIGNALS
SELECTION
FROM MENU
Motor fan request
MOTOR FAN
REQ
1/2/3/4
X
X
X
Signal status input from ECM
Compressor
request
AC COMP REQ
ON/OFF
X
X
X
Signal status input from BCM
Parking, license
plate, and tail
lamp request
TAIL & CLR REQ
ON/OFF
X
X
X
Signal status input from BCM
Headlamp low
beam request
HL LO REQ
ON/OFF
X
X
X
Signal status input from BCM
Headlamp high
beam request
HL HI REQ
ON/OFF
X
X
X
Signal status input from BCM
Front fog lamps
request
FR FOG REQ
ON/OFF
X
X
X
Signal status input from BCM
Front wiper
request
FR WIP REQ
STOP/1LO/LO/HI
X
X
X
Signal status input from BCM
Wiper auto stop
WIP AUTO
STOP
ACT P/STOP P
X
X
X
Output status of IPDM E/R
Wiper protection
WIP PROT
OFF/LS/HS/
BLOCK
X
X
X
Control status of IPDM E/R
Starter request
ST RLY REQ
ON/OFF
X
X
Signal status input from BCM
Ignition relay
status
IGN RLY
ON/OFF
X
X
X
Ignition relay status monitored
with IPDM E/R
Rear defogger
request
RR DEF REQ
ON/OFF
X
X
X
Signal status input from BCM
Hood switch
HOOD SW (*1)
OFF
X
Signal status input from IPDM
E/R
Theft warning
horn request
THFT HRN REQ
ON/OFF
X
X
Signal status input from BCM
Horn chirp
HORN CHIRP
ON/OFF
X
X
Output status of IPDM E/R
Daytime lights
request
DTRL REQ
ON/OFF
X
X
Signal status input from BCM
Test name
CONSULT-II screen display
Description
Rear defogger output
REAR DEFOGGER
With a certain ON-OFF operation, the rear defogger relay can be oper-
ated.
Front wiper (HI, LO) output
FRONT WIPER
With a certain operation (OFF, HI ON, LO ON), the front wiper relay
(Lo, Hi) can be operated.
Cooling fan output
MOTOR FAN
With a certain operation (1, 2, 3, 4), the cooling fan can be operated.
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IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
2007 Pathfinder
Headlamp relay (HIGH,
LOW) output
EXTERNAL LAMPS
With a certain operation (OFF, HI ON, LO ON, TAIL ON, FOG ON), the
lamp relay (Low, High, Tail, Fog) can be operated.
Front fog lamp relay (FOG)
output
EXTERNAL LAMPS
With a certain operation (OFF, HI ON, LO ON, TAIL ON, FOG ON), the
lamp relay (Low, High, Tail, Fog) can be operated.
Tail lamp relay output
EXTERNAL LAMPS
With a certain operation (OFF, HI ON, LO ON, TAIL ON, FOG ON), the
lamp relay (Low, High, Tail, Fog) can be operated.
Horn output
HORN
With a certain ON-OFF operation, the horn relay can be operated.
Test name
CONSULT-II screen display
Description
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
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Auto Active Test
EKS00G8I
DESCRIPTION
●
In auto active test mode, operation inspection can be performed when IPDM E/R sends a drive signal to
the following systems:
–
Rear window defogger
–
Front wipers
–
Tail, license plate, front fog, and parking lamps
–
Headlamps (High, Low)
–
A/C compressor (magnet clutch)
–
Cooling fan
OPERATION PROCEDURE
1.
Close hood and front door RH, and lift wiper arms away from windshield (to prevent glass damage by
wiper operation).
NOTE:
When auto active test is performed with hood opened, sprinkle water on windshield beforehand.
2.
Turn ignition switch OFF.
3.
Turn ignition switch ON and, within 20 seconds, press front door switch LH 10 times. Then turn ignition
switch OFF.
4.
Turn ignition switch ON within 10 seconds after ignition switch OFF.
5.
When auto active test mode is actuated, horn chirps once.
6.
After a series of operations is repeated three times, auto active test is completed.
NOTE:
When auto active test mode has to be cancelled halfway, turn ignition switch OFF.
CAUTION:
Be sure to perform
when the auto active test cannot be performed.
INSPECTION IN AUTO ACTIVE TEST MODE
When auto active test mode is actuated, the following six steps are repeated three times.
WKIA4991E
Item Number
Test Item
Operation Time/Frequency
1
Rear window defogger
10 seconds
2
Front wipers
LOW 5 seconds then HIGH 5 seconds
3
Tail, license plate, front fog and parking lamps
10 seconds
4
Headlamps
Low ON for 10 seconds, then High ON-OFF five times.
5
A/C compressor (magnet clutch)
ON-OFF 5 times
6
Cooling fan
LOW for 5 seconds, then HIGH for 5 seconds
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IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
2007 Pathfinder
Concept of Auto Active Test
●
IPDM E/R actuates auto active test mode when it receives door switch signal from BCM via CAN commu-
nication line. Therefore, when auto active test mode is activated successfully, CAN communication
between IPDM E/R and BCM is normal.
●
If any of the systems controlled by IPDM E/R cannot be operated, possible cause can be easily diagnosed
using auto active test.
Diagnosis chart in auto active test mode
WKIA4992E
Symptom
Inspection contents
Possible cause
Rear window defogger
does not operate.
Perform auto active
test. Does rear win-
dow defogger oper-
ate?
YES
●
BCM signal input circuit
NO
●
Rear window defogger relay
●
Open circuit of rear window defogger
●
IPDM E/R malfunction
●
Harness or connector malfunction between IPDM E/R and rear window
defogger
Any of front wipers, tail
and parking lamps, front
fog lamps, and head-
lamps (High, Low) do
not operate.
Perform auto active
test. Does system in
question operate?
YES
●
BCM signal input system
NO
●
Lamp/wiper motor malfunction
●
Lamp/wiper motor ground circuit malfunction
●
Harness/connector malfunction between IPDM E/R and system in
question
●
IPDM E/R (integrated relay) malfunction
A/C compressor does
not operate.
Perform auto active
test. Does magnet
clutch operate?
YES
●
BCM signal input circuit
●
CAN communication signal between BCM and ECM
●
CAN communication signal between ECM and IPDM E/R
NO
●
Magnet clutch malfunction
●
Harness/connector malfunction between IPDM E/R and magnet clutch
●
IPDM E/R (integrated relay) malfunction
Cooling fan does not
operate.
Perform auto active
test. Does cooling fan
operate?
YES
●
ECM signal input circuit
●
CAN communication signal between ECM and IPDM E/R
NO
●
Cooling fan motor malfunction
●
Harness/connector malfunction between IPDM E/R and cooling fan
motor
●
IPDM E/R (integrated relay) malfunction
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
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2007 Pathfinder
Schematic
EKS00G8J
WKIA5855E
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IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
2007 Pathfinder
IPDM E/R Terminal Arrangement
EKS00G8K
WKIA5856E
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