2004 INFINITI QX56 ECO mode

PG-22
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
Revision: August 20072004 QX56
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 position,
display may not be correct.
ACTIVE TEST
Operation Procedure
1. Touch “ACTIVE TEST” on “SELECT DIAG-MODE” screen.
2. Touch item to be tested, and check operation.
3. Touch “START”.
4. Touch "STOP" while testing to stop the operation.
Item nameCONSULT-II
screen displayDisplay or unitMonitor item selection
Description
ALL
SIGNALSMAIN
SIGNALSSELECTION
FROM MENU
Motor fan requestMOTOR FAN
REQ1/2/3/4 X X X Signal status input from ECM
Compressor request AC COMP REQ ON/OFF X X X Signal status input from ECM
Position lights
requestTAIL & CLR REQ ON/OFF X X X Signal status input from BCM
Headlamp low beam
requestHL LO REQ ON/OFF X X X Signal status input from BCM
Headlamp high
beam requestHL HI REQ ON/OFF X X X Signal status input from BCM
Front fog lghts
requestFR FOG REQ ON/OFF X X X Signal status input from BCM
Front wiper request FR WIP REQSTOP/1LOW/
LOW/HIX X X Signal status input from BCM
Wiper auto stopWIP AUTO
STOPACT P/STOP P X X X Output status of IPDM E/R
Wiper protection WIP PROT OFF/Block X X X Control status of IPDM E/R
Starter request ST RLY REQ ON/OFF X X
Status of input signal
NOTE
Ignition relay
statusIGN RLY ON/OFF X X XIgnition relay status monitored
with IPDM E/R
Rear defogger
requestRR DEF REQ ON/OFF X X X Signal status input from BCM
Oil pressure switch OIL P SW OPEN/CLOSE X XSignal status input from IPDM
E/R (function is not enabled)
Hood switch HOOD SW OFF XSignal status input from IPDM
E/R (function is not enabled)
Theft warning horn
requestTHFT 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 running
lamp requestDTRL REQ ON/OFF X X Signal status input from BCM
Test name CONSULT-II screen display Description
Rear defogger output REAR DEFOGGERWith a certain ON-OFF operation, the rear defogger relay can be oper-
ated.
Front wiper (HI, LO) output FRONT WIPERWith a certain operation (OFF, HI, LO), 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.
Lamp (HI, LO, TAIL, FOG)
outputEXTERNAL LAMPSWith a certain operation (OFF, TAIL, LO, HI, FOG), the lamp relay
(Low, High, Tail, Fog) can be operated.

IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
PG-23
C
D
E
F
G
H
I
J
L
MA
B
PG
Revision: August 20072004 QX56
Auto Active TestEKS007NR
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 and parking lamps
–Front fog lamps
–Headlamps (Hi, Lo)
–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 BL-93, "
Door Switch Check" when the auto active test cannot be performed.
INSPECTION IN AUTO ACTIVE TEST MODE

When auto active test mode is actuated, the following seven steps are repeated three times.
Cornering lamp output CORNERING LAMP —
Horn output HORN With a certain ON-OFF operation, the horn relay can be operated.Test name CONSULT-II screen display Description
WKIA1972E

PR-4
FRONT PROPELLER SHAFT
Revision: August 20072004 QX56
FRONT PROPELLER SHAFTPFP:37200
On-Vehicle ServiceEDS002JZ
PROPELLER SHAFT VIBRATION
NOTE:
If a vibration is present at high speed, inspect the propeller shaft run out first.
1. Measure the run out of the propeller shaft tube at several points
by rotating the final drive companion flange with your hands.
2. If the run out still exceeds specifications, disconnect the propel-
ler shaft at the final drive companion flange; then rotate the com-
panion flange 90°, 180°, 270° degrees and reconnect the
propeller shaft.
3. Check the run out again. If the run out still exceeds specifica-
tions, replace the propeller shaft assembly.
4. After installation, check for vibration by driving the vehicle.
INSPECTION
Inspect the propeller shaft tube for dents or cracks. If damaged, replace the propeller shaft assembly.
Removal and InstallationEDS002K0
Model 2F1310
Propeller shaft run out limit : 0.6 mm (0.024 in) or less
SDIA1759E
WDIA0047E
1. Propeller shaft tube 2. Snap ring 3. Journal bearing
4. Journal 5. Flange yoke

PR-8
REAR PROPELLER SHAFT
Revision: August 20072004 QX56
REAR PROPELLER SHAFTPFP:37000
On-Vehicle ServiceEDS002K2
PROPELLER SHAFT VIBRATION
NOTE:
If vibration is present at high speed, check propeller shaft run out first, then check mounting between propeller
shaft and companion flange.
1. Measure the run out of the propeller shaft tube at several points
by rotating the final drive companion flange with your hands.
2. If the run out still exceeds specifications, disconnect the propel-
ler shaft at the final drive companion flange; then rotate the com-
panion flange 90°, 180°, 270° degrees and reconnect propeller
shaft.
3. Check the run out again. If the run out still exceeds specifica-
tions, replace the propeller shaft assembly.
4. After installation, check for vibration by driving vehicle.
INSPECTION
Inspect the propeller shaft tube for dents or cracks. If damaged, replace the propeller shaft assembly.
Removal and InstallationEDS002K3
Model 2S1350
Propeller shaft run out limit : 1.02 mm (0.0402 in) or less
SDIA1781E
WDIA0048E
1. Propeller shaft tube 2. Snap ring 3. Journal bearing
4. Sleeve yoke 5. Journal 6. Flange yoke

RF-20
SUNROOF
Revision: August 20072004 QX56
3. CHECK SUNROOF SWITCH
1. Disconnect sunroof switch connector.
2. Operate sunroof slide switch, and check continuity of the sun-
roof switch as follows.
OK or NG
OK >> Check the condition of the harness and connector.
NG >> Replace sunroof switch.
Sunroof Motor Assembly Power Supply and Ground Circuit CheckEIS002WX
1. CHECK POWER SUPPLY CIRCUIT
1. Disconnect the sunroof motor assembly connector.
2. Check voltage between sunroof motor assembly connector R4
terminals 1, 5 and ground.
*: For explanation of the three available mode settings, refer to RF-17, "
Work Support" .
OK or NG
OK >> GO TO 3.
NG >> GO TO 2.
Terminal Condition Continuity
1
2Sunroof switch in CLOSE position Yes
Other than above No
3Sunroof switch in OPEN position Yes
Other than above No
4Sunroof switch in TILT UP position Yes
Other than above No
6Sunroof switch in TILT DOWN position Yes
Other than above No
WIIA0232E
ConnectorTerminals (Wire color)
Condition Voltage
(Approx.)
(+) (–)
R4 1 (W/L) GroundIgnition switch ON Battery voltage
Within 45 seconds after
ignition switch is turned
OFF and all doors closed
(Mode 1)
*
Battery voltage
With ignition switch OFF
(Mode 2)*0
Within 2 minutes after
ignition switch is turned
OFF and all doors closed
(Mode 3)
*
Battery voltage
When front door LH or
RH is open while retained
power is operating.0
5 (W/R) Ignition switch OFF Battery voltage
WIIA0250E

TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
RSU-19
C
D
F
G
H
I
J
K
L
MA
B
RSU
Revision: August 20072004 QX56
Exhaust Valve Solenoid System InspectionEES0011B
INSPECTION PROCEDURE
1. SELF-DIAGNOSIS RESULT CHECK
Check self-diagnosis results.
Is the above displayed in the self-diagnosis display items?
YES >> If code C1803 was retrieved during self-diagnosis, GO TO 3. If code C1805 was retrieved during
self-diagnosis, GO TO 2.
NO >> Inspection End.
2. CHECK SYSTEM OPERATION
1. Load vehicle to standard laden condition (with driver, front passenger, 2 passengers in second row seats
and no cargo).
2. Conduct active test of "COMPRESSOR" to raise vehicle ride height to +20mm.
CAUTION:
The "COMPRESSOR" active test will remain ON until it is turned off using CONSULT-II. Allowing
the compressor to run for an extended period of time may cause damage to air suspension sys-
tem components due to excessive pressure in the air suspension system.
3. Return the rear load leveling air suspension system to normal operating mode.
4. Check self-diagnostic results.
Is code C1805 displayed again?
YES >> GO TO 3.
NO >> Inspection End.
3. CONNECTOR INSPECTION
1. Turn ignition switch OFF.
2. Disconnect suspension control unit connector B3 and suspension air compressor C9.
3. Check the terminals for deformation, disconnection, looseness or damage.
OK or NG
OK >> If code C1805 was retrieved during self-diagnosis, GO TO 4. If code C1803 was retrieved during
self-diagnosis, GO TO 6.
NG >> Repair or replace as necessary.
4. AIR HOSE INSPECTION
Inspect for pinched or damaged air hoses between the suspension air reservoir and each load leveling rear air
suspension shock absorber.
OK or NG
OK >> GO TO 5.
NG >> Repair or replace as necessary.
Self-diagnosis results
C1803
C1805

TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
RSU-21
C
D
F
G
H
I
J
K
L
MA
B
RSU
Revision: August 20072004 QX56
2. CHECK SYSTEM OPERATION
1. Load vehicle to standard laden condition (with driver, front passenger, 2 passengers in second row seats
and no cargo).
2. Conduct active test of "EXHAUST SOLENOID" to lower vehicle ride height to -20mm.
3. Return the rear load leveling air suspension system to normal operating mode.
4. Check self-diagnostic results.
Is code C1804 or C1808 displayed again?
YES >> GO TO 3.
NO >> Inspection End.
3. CONNECTOR INSPECTION
1. Turn ignition switch OFF.
2. Disconnect suspension control unit connector B3 and suspension air compressor C9.
3. Check the terminals for deformation, disconnection, looseness or damage.
OK or NG
OK >> If code C1804 or C1808 was retrieved during self-diagnosis, GO TO 4. If code C1802 was
retrieved during self-diagnosis, GO TO 6.
NG >> Repair or replace as necessary.
4. AIR HOSE INSPECTION
Inspect for pinched or damaged air hoses between the suspension air reservoir and each load leveling rear air
suspension shock absorber.
OK or NG
OK >> GO TO 5.
NG >> Repair or replace as necessary.
5. SUSPENSION AIR COMPRESSOR INSPECTION
Apply 12V to suspension air compressor C9 terminal 2 and body
ground to suspension air compressor C9 terminal 1.
OK or NG
OK >> GO TO 6.
NG >> Replace the suspension air compressor. Refer to RSU-
42, "REAR LOAD LEVELING AIR SUSPENSION COM-
PRESSOR ASSEMBLY" . System air pressure should vent.
WEIA0066E

SE-34
AUTOMATIC DRIVE POSITIONER
Revision: August 20072004 QX56
Preliminary CheckEIS002YF
SETTING CHANGE FUNCTION
The settings of the automatic driving positioner system can be changed, using CONSULT-II and the display in
the center of the instrument panel.
×: Applicable –: Not applicable
It is possible to set sliding front seat for entry/exit of vehicle by pressing set switch.
*: Setting of sliding front seat for entry/exit of vehicle is ON at factory-shipment. But if custom settings are reset, setting turns OFF.
NOTE:
After the setting is registered, the new setting is effective, even if the battery is disconnected.
POWER SUPPLY AND GROUND CIRCUIT INSPECTION
1. CHECK BCM FUSE
Check if any of the following fuses for the BCM are blown.
NOTE:
Refer to SE-11, "
Component Parts And Harness Connector Location" .
OK or NG
OK >> GO TO 2.
NG >> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse. Refer to SE-
11 , "Component Parts And Harness Connector Location" .
Setting item ContentCONSULT–II
(WORK SUPPORT)Display unitDefault
settingFactory
setting
SEAT SLIDE
VOLUME SETThe distance at exiting opera-
tion can be selected from the
following 3 modes.40 mm
—××
80 mm — —
150 mm — —
Sliding Front Seat and
Steering Wheel Raise
When Entry/ Exiting
VehicleThe seat sliding and steering
wheel raise turnout and return
at entry/exit can be selected:
ON (operated)–OFF (not
operated)ON ON: Indicator lamp ON —×
OFF OFF: Indicator lamp OFF×—
Reset custom settings* All settings to default. —Default: Setting button
ON——
Content Setting change operation Indicator LEDs
The seat sliding and steering
wheel raise turnout and return
at entry/exit can be operated.
Press the set switch for more than 10 secondsBlinking twice
The seat sliding and steering
wheel raise turnout and return
at entry/exit can be not oper-
ated.Blinking once
Unit Power source Fuse No.
BCMBattery power supplyf (50A)
ON or START power supply 59 (10A)
ACC or ON power supply 4 (10A)