key fob INFINITI QX56 2008 Factory Owner's Manual

DLK-136
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
INTELLIGENT KEY UNIT POWER BACK DOOR INPUT SIGNAL
INTELLIGENT KEY UNIT POWER BACK DOOR INPUT SIGNAL
DescriptionINFOID:0000000001539045
Carrying the Intelligent Key, enables the driver to
open the liftgate using the back door switch even when the
vehicle is locked. When pressing the back door switch, the back door switch sends this signal to the Intelligent
Key unit which treats it as a request switch signal. When the Intelligent Key unit, using the rear bumper
antenna, validates the presence of the Intelligent Key, it sends an open signal to the back door control unit
regardless whether the vehicle is locked.
Rear bumper antenna is mounted on the rear bumper and is used to allow the back door handle opening of
the locked back door when the Intelligent Key is present.
Diagnosis ProcedureINFOID:0000000001539046
1.BACK DOOR SWITCH SIGNAL INSPECTION
With all doors unlocked, check the back door switch operation by pressing the back door switch.
Did the back door respond correctly by opening?
YES >> GO TO 2
NO >> Refer to DLK-134, "
Diagnosis Procedure".
2.KEYFOB SIGNAL INSPECTION
Check keyfob operation using lock and unlock buttons.
Did the keyfob operate correctly?
YES >> GO TO 3
NO >> Refer to DLK-102, "
Diagnosis Procedure".
3.INTELLIGENT KEY UNIT SIGNAL INSPECTION
NOTE:
Since the diode is a uni-directional component, pay close attention to the polarity of the ohmmeter
being used as the presence of a diode in the circuit will affect the result.
1. Turn ignition switch OFF.
2. Disconnect Intelligent Key unit, back door sw itch and back door control unit connectors.
3. Check continuity between Intelligent Key unit connector (A) M70 terminal 29 and back door switch connector (B) D706 terminal 3.
4. Check continuity between Intelligent Key unit connector (A) M70 terminal 29 and ground.
Is the inspection result normal?
YES >> Replace the Intelligent Key unit.
NO >> Repair or replace the harness or the diode as neces- sary.
29 (+) - 3 (-) : Continuity should exist.
29 (+) - Ground (-) : Conti
nuity should not exist.ALKIA1793ZZ
Revision: March 2010 2008 QX56

INTELLIGENT KEY UNIT POWER BACK DOOR OUTPUT SIGNAL
DLK-137
< COMPONENT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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INTELLIGENT KEY UNIT POWE R BACK DOOR OUTPUT SIGNAL
DescriptionINFOID:0000000001539047
The keyfob of the Intelligent Key unit is capable of opening and closing the power back door. The driver can
open or close the liftgate by pressing the liftgate button regardless whether the vehicle is locked provided the
keyfob is within operating range.
Diagnosis ProcedureINFOID:0000000001539048
1.POWER LIFTGATE SWITCH FUNCTION INSPECTION
Check power liftgate switch using switch operation.
Did the back door respond correctly?
YES >> GO TO 2
NO >> Refer to DLK-121, "
Diagnosis Procedure".
2.KEYFOB SIGNAL INSPECTION
Check keyfob operation using lock and unlock buttons.
Did the keyfob operate correctly?
YES >> GO TO 3
NO >> Refer to DLK-102, "
Diagnosis Procedure".
3.INTELLIGENT KEY UNIT SIGNAL INSPECTION
1. Turn ignition switch OFF.
2. Disconnect Intelligent Key unit, back door cont rol unit and power liftgate switch connectors.
3. Check continuity between Intelligent Key unit connector (A) M70
terminal 23 and back door control unit connector (B) B55 termi-
nal 23.
4. Check continuity between Intelligent Key unit connector (A) M70 terminal 23 and ground.
Is the inspection result normal?
YES >> Replace Intelligent Key unit.
NO >> Repair or replace the harness as necessary. 23 - 23 : Continuity should exist.
23 - Ground : Continuity should not exist.
ALKIA0680ZZ
Revision: March 2010
2008 QX56

DLK-146
< ECU DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
BCM (BODY CONTROL MODULE)
19 V/WRemote keyless entry
receiver (power sup-
ply) Output OFF Ignition switch OFF
20 G/W Remote keyless entry
receiver (signal) Input OFFStand-by (keyfob buttons re-
leased)
When remote keyless entry
receiver receives signal from
keyfob (keyfob buttons
pressed)
21 G NATS antenna amp. Input OFF
→
ON Ignition switch (OFF
→ ON)Just after turning ignition switch
ON: Pointer of tester should
move for approx. 1 second, then return to battery voltage.
22 W/V BUS — —Ignition switch ON or power
window timer operates
23 G/O Security indicator
lamp Output OFF
Goes OFF
→ illuminates (Ev-
ery 2.4 seconds) Battery voltage
→ 0V
25 BR NATS antenna amp. Input OFF
→
ON Ignition switch (OFF
→ ON)Just after turning ignition switch
ON: Pointer of tester should
move for approx. 1 second, then return to battery voltage.
26 Y/L Rear wiper auto stop
switch 2 Input ONRise up position (rear wiper
arm on stopper)
0V
A Position (full clockwise stop
position) 0V
Forward sweep (counterclock-
wise direction) Fluctuating
B Position (full counterclock-
wise stop position) Battery voltage
Reverse sweep (clockwise di-
rection) Fluctuating
27 W/R Compressor ON sig-
nal Input ONA/C switch OFF
5V
A/C switch ON 0V
Te r m i n a l
Wire
color Signal name Signal
input/
output Measuring condition
Reference value or waveform
(Approx.)
Ignition
switch Operation or condition
LIIA1893E
LIIA1894E
LIIA1895E
PIIA2344E
Revision: March 2010
2008 QX56

INTELLIGENT KEY UNITDLK-165
< ECU DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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DLK
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INTELLIGENT KEY UNIT
Reference Value - Intelligent Key UnitINFOID:0000000001539057
TERMINAL LAYOUT
PHYSICAL VALUES
WIIA1168E
Te r m i n a lWire
Color Item Condition
Voltage (V)Approx.
Ignition
Switch Po- sition Operation or Conditions
1L/Y Steering lock sole-
noid power supply LOCK
— 5
2 L CAN-H —— —
3 P CAN-L —— —
4GR Intelligent Key warn-
ing buzzer (front of
vehicle) LOCK
Operate door request
switch. Buzzer OFF
Battery voltage
Buzzer ON 0
5B/W Front door request
switch LH —Press front door request switch LH.
0
Other than above Battery voltage
6 G/R Ignition switch (ON) ON —Battery voltage
7 B/R Key switch LOCKInsert mechanical key into ignition key
cylinder.
Battery voltage
Remove mechanical key from ignition
key cylinder. 0
8G Remote keyless en-
try receiver ground
—— 0
9GR Remote keyless en-
try receiver signal —When remote keyless entry receiver re-
ceives signal from keyfob.
Stand-by
11 Y Power source (Fuse) — —Battery voltage
12 B Ground —— 0
OCC3879D
Revision: March 2010 2008 QX56

DLK-204
< SYMPTOM DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
BACK DOOR OPENER FUNCTION
BACK DOOR OPENER FUNCTION
BACK DOOR OPENER SWITCH
BACK DOOR OPENER SWITCH : Symptom TableINFOID:0000000001539068
TRUNK OPEN FUNCTION MALFUNCTION
NOTE:
• Before performing the diagnosis in the following table, check “WORK FLOW”. Refer to
DLK-6, "
Work Flow".
• Check that vehicle is under the condition shown in “Conditions of vehicle” before starting diagnosis, and
check each symptom.
• If the following symptoms” are detected, check systems shown in the “Diagnosis/service procedure” column in this order.
Conditions of Vehicle (Operating Conditions)
• Vehicle is in park.
BACK DOOR SWITCH
Symptom Suspect systemsRefer to
Automatic operations are not executed from the back door fully
closed or fully open position.
(Auto closure operates normally). Power liftgate switch system inspection
DLK-137
Park switch —
Power window serial link —
Pinch strip system inspection DLK-129
Automatic operations are not carried out together with open/close
operations.
(Manual operations are normal). Power liftgate switch system inspection
DLK-137Back door close switch system inspectionDLK-133
Auto back door power supply and ground cir-
cuit system inspection. DLK-65
The auto closure function does not operate.
(Stops at the halfway position for auto closing operations).
Pinch strip system inspection
DLK-129
During auto closing operations, if obstruction is detected, the door
does not operate in reverse. Back door motor assembly
DLK-236
During close or cinch operations, the door does not operate in re-
verse if the back door handle is operated. Handle switch system
DLK-136
When the keyfob is operated, the back door does not operate au-
tomatically. Remote keyless entry system inspection
DLK-99Power window serial link —
Pinch strip system inspection DLK-129
Auto closure does not operate. Half-latch switch system
DLK-131Cinch latch motor systemDLK-135
Handle switch systemDLK-136
The back door does not open.
(Closure motor rotation is not reversed). Open switch system
DLK-132
Handle switch systemDLK-136
Warning chime does not sound. Back door warning chime systemDLK-130
Auto closure operation works, but the back door is not fully closed Close switch system
DLK-133
Handle switch systemDLK-136
Cinch latch motor systemDLK-135
Back door latch assembly mechanism dam-
aged or worn.DLK-236
Auto open operation releases lock, but does not fully open back
door. Glass hatch ajar switch check
DLK-125
Glass hatch lock actuator does not operate
(Right front door must be unlocked for normal operation) Glass hatch switch check
DLK-123Glass hatch lock actuator check DLK-88
Replace BCMBCS-55
Revision: March 2010 2008 QX56

PREPARATIONDLK-221
< PREPARATION > [WITH INTELLIGENT KEY SYSTEM]
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PREPARATION
PREPARATION
Special Service ToolINFOID:0000000001539081
The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
Tool number
(Kent-Moore No.)
Tool name Description
—
(J-39570)
Chassis ear Locating the noise
—
(J-43980)
NISSAN Squeak and Rat-
tle Kit Repairing the cause of noise
—
(J-43241)
Remote Keyless Entry
Te s t e r Used to test keyfobs
SIIA0993E
SIIA0994E
LEL946A
Revision: March 2010
2008 QX56

LAN
CAN COMMUNICATION SYSTEMLAN-45
< FUNCTION DIAGNOSIS > [CAN]
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O P
N
Engine speed signal
T RRR R R R R R
Engine status signal TR
Fuel consumption monitor signal TR
RT
ICC steering switch signal TR
Malfunction indicator lamp signal T R
Wide open throttle position signal T R
A/T CHECK indicato r lamp signal T R
A/T fluid temperature sensor signal T R
A/T position indicator lamp signal TR RR
A/T self-diagnosis signal R T
Current gear position signal TR R
Input speed signal R TR
Output shaft revolution signal R TR R
P range signal TR R RR
ICC sensor signal T R
Buzzer output signal TR
TR
ICC OD cancel request signal R RT
ICC operation signal R RT
ICC system display signal TR
System setting signal TRT
RTR
A/C switch/indicator signal TR
RT
A/C switch signal RT R
Blower fan motor switch signal RT
Day time running light request signal TR R
Door lock/unlock status signal TR
Door switch signal R R TR R R
Front fog light request signal TR
Front wiper request signal RT R
High beam request signal TR R
Horn chirp signal TR
Ignition switch signal RTR R
Key fob door unlock signal RT
Key fob ID signal RT
Key switch signal RT
Low beam request signal TR
Position light request signal TR R
Rear window defogger switch signal T RR
Sleep wake up signal RT R R
Theft warning horn request signal TR
Signal name/Connecting unit
ECM
TCM
LASER ICC
ADP AV
BCM
HVAC I-KEY M&A
STRG 4WD
ABS
IPDM-E
Revision: March 2010 2008 QX56

PCS-24
< ECU DIAGNOSIS >[IPDM E/R]
IPDM E/R (INTELLIGENT POWER DI
STRIBUTION MODULE ENGINE ROOM)
41 Y/B Hood switch Input —Hood closed OFF
0V
Hood open ON Battery voltage
42 GR Oil pressure switch Input — Engine running
Battery voltage
Engine stopped 0V
43 L/Y Wiper auto stop signal Input ON or
START Wiper switch OFF, LO, INT Battery voltage
44 BR Daytime light relay
control Input ONDaytime light system active
0V
Daytime light system inactive Battery voltage
45 G/W Horn relay control Input ON When door locks are operated
using keyfob or Intelligent Key
(OFF
→ ON)* Battery voltage
→ 0V
46 GR Fuel pump relay con-
trol
Input —Ignition switch ON or START
0V
Ignition switch OFF or ACC Battery voltage
47 O Throttle control motor
relay control
Input —Ignition switch ON or START
0V
Ignition switch OFF or ACC Battery voltage
48 B/R Starter relay (trans-
mission range switch) Input
ON or
START A/T shift selector lever in "P"
or "N"
0V
A/T shift selector lever any
other position Battery voltage
49 R/L Trailer tow relay Output ON Lighting
switch must
be in the 1st
positionOFF
0V
ON Battery voltage
50 W/R Front fog lamp (LH) Output ON or
START Lighting
switch must
be in the 2nd
position
(LOW beam
is ON) and
the front fog
lamp switch OFF
0V
ON Battery voltage
51 W/R Front fog lamp (RH) Output ON or
START Lighting
switch must
be in the 2nd
position
(LOW beam
is ON) and
the front fog
lamp switch OFF
0V
ON Battery voltage
52 L LH low beam head-
lamp Output — Lighting switch in 2nd position Battery voltage
54 R/Y RH low beam head-
lamp
Output — Lighting switch in 2nd position Battery voltage
55 G LH high beam head-
lamp
Output —Lighting switch in 2nd position
and placed in HIGH or PASS
position
Battery voltage
56 L/W RH high beam head-
lamp Output —Lighting switch in 2nd position
and placed in HIGH or PASS
position Battery voltage
Te r m i n a l
Wire
co lor Si
gn

al nameSignal
input/
output Measuring condition
Reference value(Approx.)
Igni-
tion
switch Operation or condition
Revision: March 2010
2008 QX56

BCM (BODY CONTROL MODULE)PWC-55
< ECU DIAGNOSIS >
C
DE
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G H
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M A
B
PWC
N
O P
19 V/W Remote keyless entry
receiver (power sup-
ply) Output OFF Ignition switch OFF
20 G/W Remote keyless entry
receiver (signal) Input OFFStand-by (keyfob buttons re-
leased)
When remote keyless entry
receiver receives signal from
keyfob (keyfob buttons
pressed)
21 G NATS antenna amp. Input OFF
→
ON Ignition switch (OFF → ON) Just after turning ignition switch
ON: Pointer of tester should
move for approx. 1 second, then return to battery voltage.
22 W/V BUS — —Ignition switch ON or power
window timer operates
23 G/O Security indicator
lamp Output OFF
Goes OFF
→ illuminates (Ev-
ery 2.4 seconds) Battery voltage
→ 0V
25 BR NATS antenna amp. Input OFF
→
ON Ignition switch (OFF → ON) Just after turning ignition switch
ON: Pointer of tester should
move for approx. 1 second, then return to battery voltage.
26 Y/L Rear wiper auto stop
switch 2 Input ONRise up position (rear wiper
arm on stopper)
0V
A Position (full clockwise stop
position) 0V
Forward sweep (counterclock-
wise direction) Fluctuating
B Position (full counterclock-
wise stop position) Battery voltage
Reverse sweep (clockwise di-
rection) Fluctuating
27 W/R Compressor ON sig-
nal Input ONA/C switch OFF
5V
A/C switch ON 0V
Te r m i n a l
Wire
color Signal name Signal
input/
output Measuring condition
Reference value or waveform
(Approx.)
Ignition
switch Operation or condition
LIIA1893E
LIIA1894E
LIIA1895E
PIIA2344E
Revision: March 2010
2008 QX56

RF-20
< ECU DIAGNOSIS >
BCM (BODY CONTROL MODULE)
19 V/WRemote keyless entry
receiver (power sup-
ply) Output OFF Ignition switch OFF
20 G/W Remote keyless entry
receiver (signal) Input OFFStand-by (keyfob buttons re-
leased)
When remote keyless entry
receiver receives signal from
keyfob (keyfob buttons
pressed)
21 G NATS antenna amp. Input OFF
→
ON Ignition switch (OFF
→ ON)Just after turning ignition switch
ON: Pointer of tester should
move for approx. 1 second, then return to battery voltage.
22 W/V BUS — —Ignition switch ON or power
window timer operates
23 G/O Security indicator
lamp Output OFF
Goes OFF
→ illuminates (Ev-
ery 2.4 seconds) Battery voltage
→ 0V
25 BR NATS antenna amp. Input OFF
→
ON Ignition switch (OFF
→ ON)Just after turning ignition switch
ON: Pointer of tester should
move for approx. 1 second, then return to battery voltage.
26 Y/L Rear wiper auto stop
switch 2 Input ONRise up position (rear wiper
arm on stopper)
0V
A Position (full clockwise stop
position) 0V
Forward sweep (counterclock-
wise direction) Fluctuating
B Position (full counterclock-
wise stop position) Battery voltage
Reverse sweep (clockwise di-
rection) Fluctuating
27 W/R Compressor ON sig-
nal Input ONA/C switch OFF
5V
A/C switch ON 0V
Te r m i n a l
Wire
color Signal name Signal
input/
output Measuring condition
Reference value or waveform
(Approx.)
Ignition
switch Operation or condition
LIIA1893E
LIIA1894E
LIIA1895E
PIIA2344E
Revision: March 2010
2008 QX56