Nissan Pathfinder (2005 year). Instruction — part 368
POWER SUPPLY ROUTING CIRCUIT
PG-13
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2005 Pathfinder
IGNITION POWER SUPPLY — IGNITION SW. IN ON
WKWA2530E
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POWER SUPPLY ROUTING CIRCUIT
2005 Pathfinder
IGNITION POWER SUPPLY — IGNITION SW. IN ON AND/OR START
WKWA2531E
POWER SUPPLY ROUTING CIRCUIT
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2005 Pathfinder
WKWA2532E
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POWER SUPPLY ROUTING CIRCUIT
2005 Pathfinder
WKWA2533E
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
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2005 Pathfinder
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
PFP:284B7
System Description
EKS009XA
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IPDM E/R (Intelligent Power Distribution Module Engine Room) integrates the relay box and fuse block
which were originally placed in engine compartment. It controls integrated relays via IPDM E/R control cir-
cuits.
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IPDM E/R-integrated control circuits perform ON-OFF operation of relays, CAN communication control,
etc.
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It controls operation of each electrical component via ECM, BCM and CAN communication lines.
CAUTION:
None of the IPDM E/R integrated relays can be removed.
SYSTEMS CONTROLLED BY IPDM E/R
1.
Lamp control
Using CAN communication lines, it receives signals from the BCM and controls the following lamps:
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Headlamps (Hi, Lo)
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Parking lamps
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Tail lamps
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Front fog lamps
2.
Wiper control
Using CAN communication lines, it receives signals from the BCM and controls the front wipers.
3.
Rear window defogger relay control
Using CAN communication lines, it receives signals from the BCM and controls the rear window defogger
relay.
4.
A/C compressor control
Using CAN communication lines, it receives signals from the BCM and controls the A/C compressor
(magnetic clutch).
5.
Starter control
Using CAN communication lines, it receives signals from the TCM and controls the starter relay.
6.
Cooling fan control
Using CAN communication lines, it receives signals from the ECM and controls the cooling fan relays.
7.
Horn control
Using CAN communication lines, it receives signals from the BCM and controls the horn relay.
CAN COMMUNICATION LINE CONTROL
With CAN communication, by connecting each control unit using two communication lines (CAN L-line, CAN
H-line), it is possible to transmit a maximum amount of information with minimum wiring. Each control unit can
transmit and receive data, and reads necessary information only.
1.
Fail-safe control
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When CAN communication with other control units is impossible, IPDM E/R performs fail-safe control.
After CAN communication returns to normal operation, it also returns to normal control.
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Operation of control parts by IPDM E/R during fail-safe mode is as follows:
Controlled system
Fail-safe mode
Headlamp
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With the ignition switch ON, the headlamp (low) is ON.
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With the ignition switch OFF, the headlamp (low) is OFF.
Tail and parking lamps
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With the ignition switch ON, the tail and parking lamps are ON.
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With the ignition switch OFF, the tail and parking lamps are OFF.
Cooling fan
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With the ignition switch ON, the cooling fan HI operates.
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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
PG-18
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
2005 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
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CAN communication is normally performed with other control units.
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Individual unit control by IPDM E/R is normally performed.
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When sleep request signal is received from BCM, mode is switched to sleep waiting status.
2.
Sleep waiting status
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Process to stop CAN communication is activated.
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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
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IPDM E/R operates in low current-consumption mode.
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CAN communication is stopped.
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When a change in CAN communication signal is detected, mode switches to CAN communication sta-
tus.
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When a change in ignition switch signal is detected, mode switches to CAN communication status.
CAN Communication System Description
EKS009XB
Refer to
.
Function of Detecting Ignition Relay Malfunction
EKS009XC
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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.
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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.
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)
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
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2005 Pathfinder
CONSULT-II Function (IPDM E/R)
EKS009XD
CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.
CONSULT-II BASIC OPERATION
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which carries out CAN communication.
1.
With the ignition switch OFF, connect CONSULT-II and CON-
SULT-II CONVERTER to the data link connector, then turn igni-
tion switch ON.
2.
Touch “START (NISSAN BASED VHCL)”.
3.
Touch “IPDM E/R” on “SELECT SYSTEM” screen.
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If “IPDM E/R” is not displayed, print "SELECT SYSTEM"
screen, then refer to
.
Inspection Item, Diagnosis Mode
Description
SELF-DIAG RESULTS
The IPDM E/R performs diagnosis of CAN communication and self-diagnosis.
DATA MONITOR
The input/output data of the IPDM E/R is displayed in real time.
ACTIVE TEST
The IPDM E/R sends a drive signal to electronic components to check their operation.
CAN DIAG SUPPORT MNTR
The result of transmit/receive diagnosis of CAN communication can be read.
BBIA0538E
BCIA0029E
BCIA0030E
PG-20
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
2005 Pathfinder
4.
Select “SELF-DIAG RESULTS” or “DATA MONITOR”.
SELF-DIAGNOSTIC RESULTS
Operation Procedure
1.
Touch “SELF-DIAG RESULTS” on “SELECT DIAG MODE”
screen.
2.
Self-diagnosis results are displayed.
Display Item List
NOTE:
The details for display of the period are as follows:
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CRNT: Error currently detected with IPDM E/R.
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PAST: Error detected in the past and placed in IPDM E/R memory.
DATA MONITOR
Operation Procedure
1.
Touch “DATA MONITOR” on “SELECT DIAG MODE” screen.
2.
Touch "ALL SIGNALS”, “MAIN SIGNALS” or “SELECTION FROM MENU” on the “DATA MONITOR”
screen.
3.
Touch “START”.
4.
Touch the required monitoring item on "SELECT ITEM MENU".
BCIA0031E
WKIA1264E
Display items
CONSULT-II
display code
Malfunction detection
TIME
Possible
causes
CRNT
PAST
NO DTC IS DETECTED.
FURTHER TESTING
MAY BE REQUIRED.
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CAN COMM CIRC
U1000
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If CAN communication reception/transmission
data has a malfunction, or if any of the control
units fail, data reception/transmission cannot be
confirmed.
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When the data in CAN communication is not
received before the specified time.
X
X
Any of items
listed below
have errors:
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TRANSMIT
DIAG
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ECM
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BCM/SEC
ALL SIGNALS
All signals will be monitored.
MAIN SIGNALS
Monitors the predetermined item(s).
SELECTION FROM MENU
Selects and monitors individual signal(s).
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