key INFINITI QX4 2005 Factory Service Manual

TROUBLE DIAGNOSIS
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DIAGNOSTIC WORKSHEET
Information From Customer
KEY POINTS

WHAT..... Vehicle & A/T model

WHEN..... Date, Frequencies

WHERE..... Road conditions

HOW..... Operating conditions, Symptoms
Diagnostic Worksheet Chart
Customer name MR/MS Model & Year VIN
Trans. Model Engine Mileage
Malfunction Date Manuf. Date In Service Date
Frequency❏ Continuous❏ Intermittent ( times a day)
Symptoms❏ Vehicle does not move. (❏ Any position❏ Particular position)
❏ No up-shift (❏ 1st → 2nd❏ 2nd → 3rd❏ 3rd → 4th ❏ 4th → 5th)
❏ No down-shift (❏ 5th → 4th ❏ 4th → 3rd❏ 3rd → 2nd❏ 2nd → 1st)
❏ Lock-up malfunction
❏ Shift point too high or too low.
❏ Shift shock or slip (❏ N → D❏ Lock-up❏ Any drive position)
❏ Noise or vibration
❏ No kick down
❏ No pattern select
❏ Others
()
Malfunction indicator lamp (MIL)❏ Continuously lit❏ Not lit
1❏ Read the item on cautions concerning fail-safe and understand the customer's complaint.AT- 4 1
2❏ ATF inspection
AT- 5 0❏ Leak (Repair leak location.)
❏ Sta te
❏ Amount
3❏ Stall test and line pressure test
AT- 5 0
, AT-
51
❏ Stall test
❏ Torque converter one-way clutch
❏ Front brake
❏ High and low reverse clutch
❏ Low coast brake
❏ Forward brake
❏ Reverse brake
❏ Forward one-way clutch❏ 1st one-way clutch
❏ 3rd one-way clutch
❏ Engine
❏ Line pressure low
❏ Except for input clutch and direct
clutch, clutches and brakes OK
❏ Line pressure inspection - Suspected part:

AT-222
A/T SHIFT LOCK SYSTEM
Revision: October 20052005 QX56
A/T SHIFT LOCK SYSTEMPFP:34950
DescriptionECS00CKO

The electrical key interlock mechanism also operates as a shift lock:
With the ignition switch turned to ON, the selector lever cannot be shifted from “P” (parking) to any other
position unless the brake pedal is depressed.
With the key removed, the selector lever cannot be shifted from “P” to any other position.
The key cannot be removed unless the selector lever is placed in “P”.

The shift lock and key interlock mechanisms are controlled by the ON-OFF operation of the shift lock sole-
noid and by the operation of the rotator and slider located inside the key cylinder, respectively.
Shift Lock System Electrical Parts LocationECS00CKP
LCIA0326E

AT-224
A/T SHIFT LOCK SYSTEM
Revision: October 20052005 QX56
Shift Lock Control Unit Reference ValuesECS00CKR
SHIFT LOCK HARNESS CONNECTOR TERMINALS LAYOUT
SHIFT LOCK CONTROL UNIT INSPECTION TABLE
Data are reference values.
NOTE:
Confirm that the pointer swings only momentarily because the output time is so short. If the inspection is done with an oscilloscope, it
should be observed that the power source voltage lasts for 3.5 to 10 ms.
LCIA0327E
TER-
MINAL
NO.WIRE
COLORITEM CONDITIONVOLTAGE
(Approx.)
1 Y/R Power sourceIgnition switch: “ON” Battery voltage
Ignition switch: “OFF” Battery voltage
2L/R Detention switch
(for key)When selector lever is not in "P" position with key inserted. Battery voltage
Except the above 0V
3GRDetention switch
(for shift)When selector lever is not in "P" position Battery voltage
Except the above 0V
4 R/G Stop lamp switchWhen brake pedal is depressed Battery voltage
When brake pedal is released 0V
5W/RVehicle speed sig-
nal——
——
6 G/R Ignition signalIgnition switch: “OFF” 0V
Ignition switch: “ON” Battery voltage
7 R/W Shift lock solenoidWhen brake pedal is depressed with ignition switch "ON". 0V
When brake pedal is depressed. Battery voltage
8 B Ground Always 0V
9 G/W Key lock solenoidWhen the selector lever is set to a position other than the “P”
position, and the key switch is turned from “ON” to “OFF”Battery voltage for
approx. 0.1 sec.
(Note)
Except the above 0V
10 W/G Key unlock solenoidWhen ignition switch is not in "ON” position with key inserted.Battery voltage for
approx. 0.1 sec.
(Note)
Except the above 0V

A/T SHIFT LOCK SYSTEM
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Revision: October 20052005 QX56
Component InspectionECS00CKS
SHIFT LOCK SOLENOID

Check operation by applying battery voltage to the A/T device.
CAUTION:
Be sure to apply the voltage of the correct polarity to the
respective terminals. Otherwise, the part may be damaged.
DETENTION SWITCH
For key:

Check continuity between terminals of the A/T device.
DETENTION SWITCH
For shift:

Check continuity between terminals of the A/T device.
KEY LOCK SOLENOID
Key lock

Check operation by applying battery voltage to key switch and
key lock solenoid.
CAUTION:
Be careful not to cause burnout of the harness.
Connector No. Terminal No.
M203 9 (Battery voltage) - 10 (Ground)
LCIA0328E
ConditionConnector
No.Terminal No. Continuity
When selector lever is “P”
position.
M203 5 - 6No
When selector lever is not “P”
position.Ye s
LIIA1599E
ConditionConnector
No.Terminal No. Continuity
When selector lever is “P”
position.
M203 3 - 4No
When selector lever is not “P”
position.Ye s
WCIA0401E
Connector No. Terminal No.
M27 1 (Battery voltage) - 2 (Ground)
WCIA0240E

AT-226
A/T SHIFT LOCK SYSTEM
Revision: October 20052005 QX56
Key unlock

Check operation by applying battery voltage to key switch and
key lock solenoid.
CAUTION:
Be careful not to cause burnout of the harness.
KEY SWITCH

Check continuity between terminals of the key switch and key
lock solenoid.
STOP LAMP SWITCH

Check continuity between terminals of the stop lamp switch har-
ness connector.
Check stop lamp switch after adjusting brake pedal.
Connector No. Terminal No.
M27 2 (Battery voltage) - 1 (Ground)
WCIA0241E
Condition Connector No. Terminal No. Continuity
Key inserted
M27 3 - 4Ye s
Key withdrawn No
SCIA5662E
ConditionConnector
No.Terminal No. Continuity
When brake pedal is depressed
E38 1 -2Ye s
When brake pedal is released No
SCIA2045E

AV-68
NAVIGATION SYSTEM
Revision: October 20052005 QX56
Setting of the under section display
How To Perform Under Section Display Setting
1. Select “Setting of the Under Section Display”.

The setting status that is selected from A/C or AV is shown at the lower part of the screen.
Vehicle Electronic Systems
Application Items
How To Perform Navigation Setting
1. Start the engine.
2. Push “SETTING” button.
3. Select “Vehicle Electronic Systems”.
System Settings
How To Perform System Setting
1. Start the engine.
2. Push “SETTING” button.
3. Select “System Settings”.
Icon Description
Adjust Driver Seat When Exiting Vehicle The driver's seat automatically moves back and returns to the original position.
Lift Steering Column When Exiting Vehicle The steering column automatically tilts up and returns to the original position.
Remote Unlock Driver's Door FirstThis option allows selection of which doors will unlock first during an unlocking oper-
ation.
Keyless Remote Response — HornThis option allows the horn chirp mode when pressing the LOCK or UNLOCK button
on the keyfob to be changed.
Keyless Remote Response — LightsThis option allows the hazard flash mode when pressing the LOCK or UNLOCK but-
ton on the keyfob to be changed.
Auto Re-Lock Time This option allows the length of time before doors auto re-lock to be set.
Sensitivity of Automatic Headlights This option allows the sensitivity of the autolights to be set.
Automatic Headlights Off Delay This option allows the length of time before the autolights turn off to be set.
Speed Dependent Wiper This option allows the driving speed dependent wiper function to be turned on or off.
Return All Settings to Default All settings will return to the initial conditions.
WKIA1802E
SKIA4536E

NAVIGATION SYSTEM
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AV
Revision: October 20052005 QX56
Application Items
Language Setting
How To Perform Language Setting
1. Select "Language/Unit".

Language setting can be switched.

Unit setting can be changed.
Clock Settings
How To Perform Clock Setting
1. Select “Clock”.

Select the "Hours" or "Minutes" key and tilt the joystick to the
right or left to adjust the time.

Turn ON and OFF daylight saving time.

Select the "Auto Adjust" key. The time will be reset to the GPS
time.

Select the "Select Time Zone" key. The [TIME ZONE] screen will
appear.
Beep Setting
How To Perform Beep Setting
1. Select “Beep Setting”.

When Beep Setting is on (indicator light on), a beep will sound if
the button is pushed.
NOTE:
Items in exception of Beep Setting ON/OFF.

An error beep.

An interrupted-screen beep.
Icon DescriptionReference
page
Language/Unit Settings of language or unit can be performed.AV- 6 9
Clock Settings of clock can be performed.AV- 6 9
Beep Setting Settings of beep sound can be performed.AV- 6 9
SKIA2065E
SKIA2063E
SKIA4829E

NAVIGATION SYSTEM
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AV
Revision: October 20052005 QX56
“HEADING” MODE

To display North up, select “North up”.

To display the car heading up, select “Heading up”.
“NEARBY DISPLAY ICONS” MODE

Select an icon to display on the map screen.
“SAVE CURRENT LOCATION” MODE

The current vehicle location can be registered in “Address
Book”.
NOTE:
“Address Book” can store 50 items maximum.
“ADJUST CURRENT LOCATION” MODE
1. Move marker to correct location.
2. Select "SET" and then vehicle mark will be located in the current
position.
3. Select an icon “right” or “left” to calibrate the heading direction.
(Arrow marks will rotate corresponding to the calibration key.)
SKIA0561E
SKIA0562E
SKIA0556E
SKIA0563E

BCM (BODY CONTROL MODULE)
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Revision: October 20052005 QX56

BCM is activated with low current consumption mode.

CAN communication is not active.

When CAN communication operation is detected, it switches to CAN communication status.

When a state of the following switches changes, it switches to CAN communication state:
–Key switch
–Hazard switch
–Door lock/unlock switch
–Front door switch (LH, RH)
–Rear door switch (LH, RH)
–Back door switch
–Combination switch (passing, lighting switch 1st position, front fog lamp)
–Keyfob (lock/unlock signal)
–Door lock assembly LH (key cylinder switch)

When control performed only by BCM is required by switch, it shifts to CAN communication inactive
mode.

Status of combination switch reading function is changed.
SYSTEMS CONTROLLED BY BCM DIRECTLY

Power door lock system. Refer to BL-16, "POWER DOOR LOCK SYSTEM" .

Remote keyless entry system. Refer to BL-44, "REMOTE KEYLESS ENTRY SYSTEM" .

Power window system. Refer to GW-15, "POWER WINDOW SYSTEM" . NOTE

Sunroof system. Refer to RF-10, "SUNROOF" . NOTE

Room lamp timer. Refer to LT- 1 2 9 , "INTERIOR ROOM LAMP" .

Warning chime system. Refer to DI-42, "WARNING CHIME" .

Turn signal and hazard warning lamps system. Refer to LT-80, "TURN SIGNAL AND HAZARD WARNING
LAMPS" .
NOTE:
Power supply only. No system control.
SYSTEMS CONTROLLED BY BCM AND IPDM E/R

Panic system. Refer to BL-44, "REMOTE KEYLESS ENTRY SYSTEM" .

IVIS (NATS) system. Refer to BL-137, "IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)" .

Headlamp, tail lamp, front fog lamp, auto light and battery saver control systems. Refer to LT- 6 , "HEAD-
LAMP (FOR USA)" , LT- 3 3 , "HEADLAMP (FOR CANADA) - DAYTIME LIGHT SYSTEM -" , LT-108,
"PARKING, LICENSE PLATE AND TAIL LAMPS" , LT-69, "FRONT FOG LAMP" or LT-47, "AUTO LIGHT
SYSTEM" .

Front wiper and washer system. Refer to WW-4, "FRONT WIPER AND WASHER SYSTEM" .

Rear wiper and washer system. Refer to WW-35, "REAR WIPER AND WASHER SYSTEM" .

Rear window defogger system. Refer to GW-77, "REAR WINDOW DEFOGGER" .
MAJOR COMPONENTS AND CONTROL SYSTEM
System Input Output
Remote keyless entry system Keyfob

All-door locking actuator

Back door opener actuator

Turn signal lamp (LH, RH)
Power door lock systemFront power door lock/unlock
switch (LH, RH)All-door locking actuator
Power supply (IGN) to power window
and sunroofIgnition power supply Power supply to power window and sunroof system
Power supply (BAT) to power window
and sunroofBattery power supply Power supply to power window and sunroof system

BCS-8
BCM (BODY CONTROL MODULE)
Revision: October 20052005 QX56
CAN Communication System DescriptionEKS00D7X
Refer to LAN-5, "CAN COMMUNICATION" .
Panic alarm
Key switch

KeyfobIPDM E/R
Auto light system

Auto light sensor

Combination switchIPDM E/R
Battery saver control

Ignition switch

Combination switchIPDM E/R
Headlamp Combination switch IPDM E/R
Tail lamp Combination switch IPDM E/R
Fog lamp Combination switch IPDM E/R
Turn signal lamp Combination switch

Turn signal lamp

Combination meter
Hazard lamp Hazard switch

Turn signal lamp

Combination meter
Room lamp timer

Key switch

Keyfob

Main power wndow and door
lock/unlock switch

Front door switch LH

All door switchInterior room lamp
Key warning chime

Key switch

Front door switch LHCombination meter (warning buzzer)
Light warning chime

Combination switch

Key switch

Front door switch LHCombination meter (warning buzzer)
Vehicle-speed-sensing intermittent
wiper

Combination switch

Combination meterIPDM E/R
Rear window defogger Rear window defogger switch IPDM E/R
Air conditioner switch signal Front air control ECM
Blower fan switch signal Front air control ECMSystem Input Output