2006 INFINITI QX56 key

AT-46
TROUBLE DIAGNOSIS
Revision: November 20092006 QX56
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 EngineMileage
Malfunction Date Manuf. DateIn 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 2
2❏
ATF inspection
AT- 5 1❏ Leak (Repair leak location.)
❏ State
❏ Amount
3 ❏
Stall test and line pressure test
AT- 5 1
, AT-
52
❏ 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:

A/T SHIFT LOCK SYSTEMAT-221
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Revision: November 2009 2006 QX56
A/T SHIFT LOCK SYSTEMPFP:34950
DescriptionECS00ENU

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 LocationECS00ENV
LCIA0326E

A/T SHIFT LOCK SYSTEMAT-223
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Shift Lock Control Unit Reference ValuesECS00ENX
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 oscillo scope, it
should be observed that the power source voltage lasts for 3.5 to 10 ms.
WCIA0550E
TER-
MINAL NO. WIRE
COLOR ITEM
CONDITION VOLTAGE
(Approx.)
1Y/RPower source Ignition 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
3GR Detention switch (for
shift) When selector lever is not in "P" position
Battery voltage
Except the above 0V
4 R/G Stop lamp switch When brake pedal is depressed
Battery voltage
When brake pedal is released 0V
5 W/R Vehicle speed signal ——
6 G/R Ignition signal Ignition switch:
“OFF ” 0V
Ignition switch: “ON ” Battery voltage
7 R/W Shift lock solenoid When brake pedal is depressed with ignition switch "ON". 0V
When brake pedal is depressed.
Battery voltage
8 B Ground Always0V
9 G/W Key lock solenoid When 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 solenoid When ignition switch is not in "ON
” position with key inserted. Battery voltage for
approx. 0.1 sec.
(Note)
Except the above 0V

AT-224
A/T SHIFT LOCK SYSTEM
Revision: November 20092006 QX56
Component InspectionECS00ENY
SHIFT LOCK SOLENOID

Check operation by applying battery voltage to A/T device termi-
nal 9 and ground to terminal 10.
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 terminal 1 and ground to terminal 2.
CAUTION:
Be careful not to cause burnout of the harness.
LCIA0328E
Condition Terminal No. Continuity
When selector lever is “ P” position.
5 - 6No
When selector lever is not “P ” position. Yes
LIIA1599E
ConditionTerminal No. Continuity
When selector lever is “P ” position.
3 - 4No
When selector lever is not “P ” position. Yes
WCIA0401E
WCIA0240E

A/T SHIFT LOCK SYSTEMAT-225
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Key unlock

Check operation by applying battery voltage to key switch and
key lock solenoid terminal 2 and ground to terminal 1.
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.
WCIA0241E
Condition Terminal No. Continuity
Key inserted 3 - 4Ye s
Key withdrawn No
SCIA5662E
ConditionTerminal No. Continuity
When brake pedal is depressed 3 - 4Ye s
When brake pedal is released No
WCIA0559E

BCM (BODY CONTROL MODULE)BCS-7
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Revision: November 2009 2006 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:
–Ignition switch
–Key switch (insert)
–Hazard switch
–Main door lock/unlock switch
–Front door switch (LH, RH)
–Rear door switch (LH, RH)
–Back latch (door ajar switch)
–Glass hatch ajar switch
–Combination switch (passing, lighting switch 1st position, front fog lamp)
–Keyfob (lock/unlock signal)
–Front 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 3 4 , "INTERIOR ROOM LAMP" .

Warning chime system. Refer to DI-43, "WARNING CHIME" .

Turn signal and hazard warning lamps system. Refer to LT- 8 0 , "TURN SIGNAL AND HAZARD WARNING
LAMPS" .

Trailer turn signal and hazard warning lamps system (if equipped). Refer to LT- 1 2 6 , "TRAILER TOW" .

Rear wiper and washer system. Refer to WW-32, "REAR WIPER AND WASHER SYSTEM" .
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" .

Vehicle security system. Refer to BL-75, "VEHICLE SECURITY (THEFT WARNING) 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- 5 , "HEAD-
LAMP (FOR USA)" , LT- 3 3 , "HEADLAMP (FOR CANADA) - DAYTIME LIGHT SYSTEM -" , LT- 111 ,
"PARKING, LICENSE PLATE AND TAIL LAMPS" , LT- 6 9 , "FRONT FOG LAMP" or LT- 4 7 , "AUTO LIGHT
SYSTEM" .

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

Rear window defogger system. Refer to GW-74, "REAR WINDOW DEFOGGER" .
MAJOR COMPONENTS AND CONTROL SYSTEM
System InputOutput
Remote keyless entry system Remote keyless entry receiver (keyfob)

All door locking actuators

Back door opener actuator

Turn signal lamps
Power door lock system

Front power door lock/unlock switch (LH, RH)

All door switches

Key switch All door locking actuators

BCS-8
BCM (BODY CONTROL MODULE)
Revision: November 20092006 QX56
CAN Communication System DescriptionEKS00D7X
Refer to LAN-26, "CAN COMMUNICATION" .
Power supply [ignition (IGN)/retained
accessory power (RAP)] to power win-
dow and sunroof IGN/RAP supply
Power supply to power window and
sunroof system
Power supply (BAT) to power window
and sunroof Battery power supply Power supply to power window and
sunroof system
Panic alarm

Key switch

Remote keyless entry receiver (keyfob) IPDM E/R
Auto light system

Optical sensor

Combination switch IPDM E/R
Battery saver control

Ignition switch

Combination switch

Front door switch LH and RH IPDM E/R
Headlamp Combination switch IPDM E/R
Tail lamp Combination switch IPDM E/R
Front 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

Remote keyless entry receiver (keyfob)

Main power window and door lock/unlock switch

Front door lock assembly LH (key cylinder switch)

All door switches Interior room lamp
Key warning chime

Key switch

Front door switch LH Combination meter (warning
buzzer)
Light warning chime

Combination switch

Key switch

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

Combination switch

Combination meter IPDM 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 ECM
Low tire pressure warning system Remote keyless entry receiver

Combination meter

Display control unit
Trailer tow (if equipped) Combination switch Trailer turn signal relays
Vehicle security system

Remote keyless entry receiver (keyfob)

Main power window and door lock/unlock switch

Power window and door lock/unlock switch RH

Front door lock assembly LH (key cylinder switch)

All door switches

Back door latch (door ajar switch)

IPDM E/R

Security indicator lamp
System
InputOutput

BCS-12
BCM (BODY CONTROL MODULE)
Revision: November 20092006 QX56
4. Select item to be diagnosed on “SELECT TEST ITEM” screen.
ITEMS OF EACH PART
NOTE:
CONSULT-II will only display systems the vehicle possesses.
LKIA0183E
System and item CONSULT-II
display Diagnostic test mode (Inspection by part)
WORK
SUPPORT SELF−
DIAG
RESULTS CAN DIAG
SUPPORT MNTR DATA
MONITOR ECU
PA R T
NUMBER ACTIVE
TEST CON-
FIGU-
RATION
BCM BCM××× × ×
Power door lock system DOOR LOCK ×× ×
Rear defogger REAR
DEFOGGER ××
Warning chime BUZZER ××
Room lamp timer INT LAMP ×× ×
Remote keyless entry
system MULTI REMOTE
ENT
××
×
Headlamp HEAD LAMP×× ×
Wiper (front/rear) WIPER ×× ×
Turn signal lamp
Hazard lamp FLASHER
××
Blower fan switch signal
Air conditioner switch
signal AIR
CONDITIONER
×
Combination switch COMB SW ×
IVIS (NATS) IMMU ××
Interior lamp battery
saver BATTERY
SAVER
××
×
Back door TRUNK ××
Theft alarm THEFT ALM×× ×
Retained accessory
power control RETAINED PWR
×× ×
Oil pressure switch SIGNAL BUFFER ××
Air pressure monitor AIR PRESSURE
MONITOR××
× ×
Panic alarm PANIC ALARM ×