Nissan Pathfinder (2012 year). Manual — part 484
PCS-8
< SYSTEM DESCRIPTION >
[IPDM E/R]
POWER CONSUMPTION CONTROL SYSTEM
Component Parts Location
INFOID:0000000007355022
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
August 2012
2012 Pathfinder
PCS
DIAGNOSIS SYSTEM (IPDM E/R)
PCS-9
< SYSTEM DESCRIPTION >
[IPDM E/R]
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DIAGNOSIS SYSTEM (IPDM E/R)
Diagnosis Description
INFOID:0000000007355023
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
August 2012
2012 Pathfinder
PCS-10
< SYSTEM DESCRIPTION >
[IPDM E/R]
DIAGNOSIS SYSTEM (IPDM E/R)
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
August 2012
2012 Pathfinder
PCS
DIAGNOSIS SYSTEM (IPDM E/R)
PCS-11
< SYSTEM DESCRIPTION >
[IPDM E/R]
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CONSULT Function (IPDM E/R)
INFOID:0000000007355024
APPLICATION ITEM
CONSULT performs the following functions via CAN communication with IPDM E/R.
SELF DIAGNOSTIC RESULT
DATA MONITOR
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
Direct Diagnostic Mode
Description
Self Diagnostic Result
The IPDM E/R self diagnostic results are displayed.
Data Monitor
The IPDM E/R input/output data is displayed in real time.
Active Test
The IPDM E/R activates outputs to test components.
CAN Diag Support Mntr
The result of transmit/receive diagnosis of CAN communication is diplayed.
Monitor Item [Unit]
Main
Signals
Description
MOTOR FAN REQ [1/2/3/4]
×
Indicates cooling fan speed signal received from ECM on CAN communication
line
AC COMP REQ [On/Off]
×
Indicates A/C compressor request signal received from ECM on CAN commu-
nication line
August 2012
2012 Pathfinder
PCS-12
< SYSTEM DESCRIPTION >
[IPDM E/R]
DIAGNOSIS SYSTEM (IPDM E/R)
ACTIVE TEST
TAIL&CLR REQ [On/Off]
×
Indicates position light request signal received from BCM on CAN communica-
tion line
HL LO REQ [On/Off]
×
Indicates low beam request signal received from BCM on CAN communication
line
HL HI REQ [On/Off]
×
Indicates high beam request signal received from BCM on CAN communication
line
FR FOG REQ [On/Off]
×
Indicates front fog light request signal received from BCM on CAN communica-
tion line
FR WIP REQ [Stop/1LOW/Low/Hi]
×
Indicates front wiper request signal received from BCM on CAN communication
line
WIP AUTO STOP [STOP P/ACT P]
×
Indicates condition of front wiper auto stop signal
WIP PROT [Off/BLOCK]
×
Indicates condition of front wiper fail-safe operation
ST RLY REQ [On/Off]
Indicates starter request signal received from ECM on CAN communication line
IGN RLY [On/Off]
×
Indicates condition of ignition relay
RR DEF REQ [On/Off]
×
Indicates rear defogger request signal received from BCM on CAN communica-
tion line
OIL P SW [Open/Close]
Indicates condition of oil pressure switch
DTRL REQ [Off]
Indicates daytime light request signal received from BCM on CAN communica-
tion line
THFT HRN REQ [On/Off]
Indicates theft warning horn request signal received from BCM on CAN commu-
nication line
HORN CHIRP [On/Off]
Indicates horn reminder signal received from BCM on CAN communication line
Monitor Item [Unit]
Main
Signals
Description
Test item
Description
REAR DEFOGGER
This test is able to check rear defogger operation [On/Off].
FRONT WIPER
This test is able to check wiper motor operation [Hi/Lo/Off].
MOTOR FAN
This test is able to check cooling fan operation [4/3/2/1].
EXTERNAL LAMPS
This test is able to check external lamp operation [Fog/Hi/Lo/TAIL/Off].
HORN
This test is able to check horn operation [On].
August 2012
2012 Pathfinder
PCS
U1000 CAN COMM CIRCUIT
PCS-13
< DTC/CIRCUIT DIAGNOSIS >
[IPDM E/R]
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DTC/CIRCUIT DIAGNOSIS
U1000 CAN COMM CIRCUIT
Description
INFOID:0000000007355025
.
DTC Logic
INFOID:0000000007355026
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
Diagnosis Procedure
INFOID:0000000007355027
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 display de-
scription
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)
August 2012
2012 Pathfinder
PCS-14
< DTC/CIRCUIT DIAGNOSIS >
[IPDM E/R]
POWER SUPPLY AND GROUND CIRCUIT
POWER SUPPLY AND GROUND CIRCUIT
Diagnosis Procedure
INFOID:0000000007355028
Regarding Wiring Diagram information, refer to
.
1.
CHECK FUSES AND FUSIBLE LINK
Check that the following IPDM E/R fuses or fusible link are not blown.
Is the fuse blown?
YES
>> Replace the blown fuse or fusible link after repairing the affected circuit.
NO
>> GO TO 2
2.
CHECK BATTERY POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R.
3. Check voltage between IPDM E/R harness connectors and
ground.
Is the measurement value normal?
YES
>> GO TO 3
NO
>> Repair or replace harness.
3.
CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between IPDM E/R harness connectors and
ground.
Does continuity exist?
YES
>> Inspection End.
NO
>> Repair or replace harness.
Terminal No.
Signal name
Fuses and fusible link No.
1
Battery
A, D
2
Battery
C
Terminals
Ignition switch position
(+)
(
−
)
OFF
ON
START
Connector
Terminal
E118
1
Ground
Battery
voltage
Battery
voltage
Battery
voltage
2
Battery
voltage
Battery
voltage
Battery
voltage
SKIA1987E
IPDM E/R
Ground
Continuity
Connector
Terminal
E122 (A)
38
Yes
E124 (B)
59
AWMIA0024ZZ
August 2012
2012 Pathfinder
PCS
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
PCS-15
< ECU DIAGNOSIS INFORMATION >
[IPDM E/R]
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ECU DIAGNOSIS INFORMATION
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE
ROOM)
Reference Value
INFOID:0000000007355029
VALUES ON THE DIAGNOSIS TOOL
Monitor Item
Condition
Value/Status
MOTOR FAN REQ
Engine idle speed
Changes depending on engine
coolant temperature, air conditioner
operation status, vehicle speed,
etc.
1, 2, 3, 4
AC COMP REQ
A/C switch OFF
Off
A/C switch ON
On
TAIL&CLR REQ
Lighting switch OFF
Off
Lighting switch 1ST, 2ND, HI or AUTO (Light is illuminated)
On
HL LO REQ
Lighting switch OFF
Off
Lighting switch 2ND HI or AUTO (Light is illuminated)
On
HL HI REQ
Lighting switch OFF
Off
Lighting switch HI
On
FR FOG REQ
Lighting switch 2ND or AUTO (Light
is illuminated)
Front fog lamp switch OFF
Off
• Front fog lamp switch ON
• Daytime light activated (Canada
only)
On
FR WIP REQ
Ignition switch ON
Front wiper switch OFF
Stop
Front wiper switch INT
1LOW
Front wiper switch LO
Low
Front wiper switch HI
Hi
WIP AUTO STOP
Ignition switch ON
Front wiper stop position
STOP P
Any position other than front wiper
stop position
ACT P
WIP PROT
Ignition switch ON
Front wiper operates normally
Off
Front wiper stops at fail-safe opera-
tion
BLOCK
ST RLY REQ
Ignition switch OFF or ACC
Off
Ignition switch START
On
IGN RLY
Ignition switch OFF or ACC
Off
Ignition switch ON
On
RR DEF REQ
Rear defogger switch OFF
Off
Rear defogger switch ON
On
OIL P SW
Ignition switch OFF, ACC or engine running
Open
Ignition switch ON
Close
DTRL REQ
Daytime light system requested OFF with CONSULT.
Off
Daytime light system requested ON with CONSULT.
On
THFT HRN REQ
Not operated
Off
• Panic alarm is activated
• Horn is activated with VEHICLE SECURITY (THEFT WARNING) SYS-
TEM
On
August 2012
2012 Pathfinder
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