door lock INFINITI QX56 2006 Factory Repair Manual

BL-86
VEHICLE SECURITY (THEFT WARNING) SYSTEM
Revision: November 20092006 QX56
Terminals and Reference Value for IPDM E/REIS0060K
1*: when horn reminder is ON.
2*: L/W is for USA.
3*: Y is for Canada.
CONSULT-II Function (BCM)EIS0060L
CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.
CONSULT-II INSPECTION PROCEDURE
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which carries out CAN communication.
Te r m i n a l Wire
Color Item
Condition Voltage (V)
(Approx.)
38 B Ground —0
39 L CAN-H ——
40 P CAN-L ——
41 Y/B Hood switch Hood closed
OFF 0V
Hood open ONBattery voltage
45 G/W Horn relay When doors locks are operated
using keyfob (OFF →
ON) *1 Battery voltage
→ 0V
52 L Headlamp low (LH) Ignition
SW ON Lighting
switch
2ND posi-
tion OFF
0V
ON Battery voltage
54 R/Y Headlamp low (RH) Ignition
SW ON Lighting
switch
2ND posi-
tion OFF
0V
ON Battery voltage
55 G Headlamp high (LH) Ignition
SW ON Lighting
switch
HIGH or
PA S S
position OFF
0V
ON Battery voltage
56 L/W *2
Y *3 Headlamp high (RH) Ignition
SW ON Lighting
switch
HIGH or
PA S S
position OFF
0V
ON Battery voltage
59 B Ground —0
BCM
diagnostic test item Diagnostic mode
Description
Inspection by part WORK SUPPORT
Supports inspections and adjustments. Commands are transmitted to the
BCM for setting the status suitable for required operation, input/output sig-
nals are received from the BCM and received date is displayed.
DATA MONITOR Displays BCM input/output data in real time.
ACTIVE TEST Operation of electrical loads can be checked by sending drive signal to
them.
SELF-DIAG RESULTS Displays BCM self-diagnosis results.
CAN DIAG SUPPORT MNTR The result of transmit/receive diagnosis of CAN communication can be
read.
ECU PART NUMBER BCM part number can be read. CONFIGURATION Performs BCM configuration read/write functions.

BL-88
VEHICLE SECURITY (THEFT WARNING) SYSTEM
Revision: November 20092006 QX56
CONSULT-II APPLICATION ITEM
Data Monitor
Active Test
Work Support
Monitored ItemDescription
DOOR SW-AS Indicates [ON/OFF] condition of front door switch RH.
DOOR SW-RR Indicates [ON/OFF] condition of rear door switch RH.
DOOR SW-RL Indicates [ON/OFF] condition of rear door switch LH.
DOOR SW-DR Indicates [ON/OFF] condition of front door switch LH.
BACK DOOR SW Indicates [ON/OFF] condition of back door latch.
TRNK OPN MNTR Indicates [ON/OFF] condition of glass hatch ajar switch.
ACC ON SW Indicates [ON/OFF] condition of ignition switch in ACC position.
IGN ON SW Indicates [ON/OFF] condition of ignition switch in ON position.
KEYLESS UNLOCK Indicates [ON/OFF] condition of unlock signal from keyfob.
KEYLESS LOCK Indicates [ON/OFF] condition of lock signal from keyfob.
KEY CYL LK-SW Indicates [ON/OFF] condition of lock signal from door key cylinder switch.
KEY CYL UN-SW Indicates [ON/OFF] condition of unlock signal from door key cylinder switch.
KEYLESS PBD Indicates [ON/OFF] condition of unlock signal from door key cylinder switch.
CDL UNLOCK SW Indicates [ON/OFF] condition of unlock signal from lock/unlock switch.
CDL LOCK SW Indicates [ON/OFF] condition of lock signal from lock/unlock switch.
HOOD SW Indicates [ON/OFF] condition of hood switch.
Test Item Description
THEFT IND This test is able to check security indicator lamp operation. The lamp will be turned on when
“ON ”
on CONSULT-II screen is touched.
HEADLAMP (HI) This test is able to check vehicle security lamp operation. The high beam headlamps will be acti-
vated for 0.5 seconds after “
ON” on CONSULT-II screen is touched.
VEHICLE SECURITY HORN This test is able to check vehicle security horn operation. The horns will be activated for 0.5 sec-
onds after
“ON ” on CONSULT-II screen is touched.
Test Item Description
SECURITY ALARM SET This mode can confirm and change security alarm ON-OFF setting.
THEFT ALM TRG The switch which triggered vehicle security alarm is recorded. This mode is able to confirm and
erase the record of vehicle security alarm. The trigger data can be erased by touching
“CLEAR ”
on CONSULT-II screen.

VEHICLE SECURITY (THEFT WARNING) SYSTEMBL-89
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Trouble DiagnosisEIS0060M
WORK FLOW

“POWER DOOR LOCK SYSTEM” Diagnosis refer to BL-16, "POWER DOOR LOCK SYSTEM" .

“REMOTE KEYLESS ENTRY SYSTEM ” Diagnosis refer to BL-44, "REMOTE KEYLESS ENTRY SYS-
TEM" .
WIIA0599E

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Symptom ChartEIS0060O
*1: Make sure the system is in the armed phase.SYMPTOM PROCEDURE Diagnostic procedure
1 Vehicle security
system cannot be
set by
···· Door switch Refer to
BL-92, "
Door Switch Check" .
Lock/unlock switch Refer to BL-98, "
Door Lock/Unlock Switch Check" .
Door outside key Refer to BL-96, "
Front Door Lock Assembly LH (Key Cylinder Switch)
Check" .
BCM If the above systems are “OK ”, replace BCM. Refer to BCS-20, "
BCM" .
2 Security indicator
does not turn
“
ON ”. Combination meter Refer to BL-95, "
Combination Meter (Security Indicator Lamp) Check" .
BCM If the above systems are “OK ”, replace BCM. Refer to BCS-20, "
BCM" .
3 *1 Vehicle secu-
rity system does
not alarm when
···· Any door, hood or glass hatch
is opened. Refer to BL-92, "
Door Switch Check" .
Refer to BL-94, "
Hood Switch Check" .
If the above systems are “ OK”, replace BCM. Refer to BCS-20, "
BCM" .
4 Vehicle security
alarm does not
activate. Horn alarm
Refer to BL-98, "
Vehicle Security Horn Alarm Check" .
If the above systems are “ OK”, check horn system.
Refer to WW-55, "
HORN" .
Headlamp alarm Refer to BL-98, "
Vehicle Security Headlamp Alarm Check" .
If the above systems are “ OK”, replace BCM. Refer to BCS-20, "
BCM" .
5 Vehicle security
system cannot be
canceled by
····Door outside key
Refer to BL-96, "
Front Door Lock Assembly LH (Key Cylinder Switch)
Check" .
If the above systems are “ OK”, check main power window and door lock/
unlock switch.
Keyfob Check remote keyless entry function. Refer to
BL-65, "
Keyfob Battery and
Function Check" .
If the above systems are “ OK”, replace BCM. Refer to BCS-20, "
BCM" .

BL-96
VEHICLE SECURITY (THEFT WARNING) SYSTEM
Revision: November 20092006 QX56
3. CHECK HARNESS CONTINUITY
1. Turn ignition switch OFF.
2. Disconnect BCM and combination meter (security indicator lamp).
3. Check continuity between BCM connector (A) M18 terminal 23 and combination meter (security indicator lamp) harness con-
nector (B) M24 terminal 28.
4. Check continuity between BCM connector (A) M18 terminal 23 and ground.
OK or NG
OK >> Check the following:

10A fuse [No. 19, located in fuse block (J/B)]

Harness for open or short between combination meter (security indicator lamp) and fuse
NG >> Repair or replace harness.
Front Door Lock Assembly LH (Key Cylinder Switch) CheckEIS0060S
1. CHECK FRONT DOOR LOCK ASSEMBLY LH (KEY CYLINDER SWITCH)
With CONSULT-II
Check front door lock assembly LH (key cylinder switch) ("KEY CYL LK-SW") and ("KEY CYL UN-SW) in
DATA MONITOR mode in CONSULT –II.Refer to BL-27, "
DATA MONITOR" .

When key inserted in front key cylinder is turned to LOCK:

When key inserted in front key cylinder is turned to UNLOCK:
Without CONSULT-II
Check voltage between main power window and door lock/unlock switch connector D7 terminals 4, 6 and
ground.
OK or NG
OK >> Front door lock assembly LH (key cylinder switch) signal is OK.
NG >> GO TO 2. 23 - 28
: Continuity should exist.
23 - ground : Continuity should not exist.
LIIA2253E
KEY CYL LK-SW : ON
KEY CYL UN-SW : ON
LIIA0188E
ConnectorTerminals
ConditionVoltage (V)
(Approx.)
(+) (– )
D7 4
Ground Neutral/Unlock
5
Lock 0
6 Neutral/Lock
5
Unlock 0
LIIA0566E

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2. CHECK DOOR KEY CYLINDER SWITCH LH GROUND HARNESS
Check continuity between front door lock assembly LH (key cylinder
switch) connector (A) D14 terminal 5 and body ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.
3. CHECK DOOR KEY CYLINDER SWITCH LH
Check continuity between front door lock assembly LH (key cylinder
switch) terminals.
OK or NG
OK >> GO TO 4.
NG >> Replace front door lock assembly LH (key cylinder switch). Refer to BL-131, "
Removal and Instal-
lation" .
4. CHECK DOOR KEY CYLINDER HARNESS
Check continuity between main power window and door lock/unlock
switch connector (A) D7 terminals 4, 6 and front door lock assembly
LH (key cylinder switch) connector (B) D14 terminals 1, 6 and body
ground.
OK or NG
OK >> Replace main power window and door lock/unlock switch.
NG >> Repair or replace harness.
Connector TerminalsContinuity
D14 5 – Ground Yes
WIIA0755E
Terminals Condition Continuity
1 – 5 Key is turned to UNLOCK or neutral.
No
Key is turned to LOCK. Yes
5 – 6 Key is turned to LOCK or neutral.
No
Key is turned to UNLOCK. Yes
LIIA1573E
Connector Terminals Connector Terminals Continuity
A: Main
power win- dow and
door lock/
unlock switch 4B: Front
door lock
assembly
LH (key
cylinder switch) 1Y
es
66Y es
4, 6 Ground No
WIIA0756E

BL-98
VEHICLE SECURITY (THEFT WARNING) SYSTEM
Revision: November 20092006 QX56
Vehicle Security Horn Alarm CheckEIS0060T
1. CHECK HORN OPERATION
Check if horn sounds with horn switch.
Does horn operate?
YES >> Check harness for open or short between IPDM E/R and horn relay.
NO >> Check horn circuit. Refer to WW-55, "
HORN" .
Vehicle Security Headlamp Alarm Check EIS0060U
1. CHECK VEHICLE SECURITY HEADLAMP ALARM OPERATION
Check if headlamps operate with lighting switch.
Do headlamps come on when turning switch ON?
YES >> Headlamp alarm is OK.
NO >> Check headlamp system. Refer to LT- 5 , "
HEADLAMP (FOR USA)" or LT- 3 3 , "HEADLAMP (FOR
CANADA) - DAYTIME LIGHT SYSTEM -" .
Door Lock/Unlock Switch Check EIS0060V
1. CHECK DOOR LOCK/UNLOCK SWITCH INPUT SIGNAL
Check if power door lock operates with door lock/unlock switch.
Do doors lock/unlock when using each door lock/unlock switch?
YES >> Door lock/unlock switch is OK.
NO >> Refer to BL-34, "
Door Lock/Unlock Switch Check" .

BL-100
AUTOMATIC BACK DOOR SYSTEM
Revision: November 20092006 QX56
System DescriptionEIS0060X
NOTE:
The automatic back door system must be initialized by fully closing the back door anytime the battery
or the back door control unit has been disconnected.
The automatic back door system consists of a one piece unit that combines the back door control unit along
with the back door motor, back door clutch and the back door encoder. The back door latch contains a lock
function that can control the two functions of automatic back door latch closure and electrical opener with a
single motor when you close the back door to the halfway-state.

Back door auto closure
When the back door is closed to the halfway state (half-latch) position, the motor automatically drives to
rotate the latch lever and pull it in from half latched to full latched.

Power back door
With the back door closed, press the power liftgate switch or press the keyfob button, or pull the back door
handle with the back door unlocked, the back door latch motor opens the locking plate and releases the
latch. The back door motor then raises the door to the full open position.
With the back door fully open, press the power liftgate switch, remote keyless entry button or the back
door close switch, the back door motor closes the door to the half-latch state. The back door latch motor
then drives the latch to the full close position.
At the onset of each power open or power close application, the hazard lamps will flash 3 times and the
warning chime will sound 3 times lasting a total of 2 seconds.
OPERATION DESCRIPTION
Power Liftgate Switch Operation (Fully Closed → Fully Open Operation)

When the power liftgate switch is pressed, back door control unit terminal 23 receives the signal.

The back door control unit checks the A/T selector lever (P position) through terminal 18, vehicle speed
through terminal 21, ignition status through terminal 7, glass hatch is closed through terminal 17 and bat-
tery voltage is present through terminal 3.

When the back door control unit receives the signal, if the auto back door operating enable conditions are
met, it sends a 5 volt signal through terminal 6 and grounds terminal 9 to sound the warning chime, sends
a signal to the BCM through terminal 4 to flash the hazard lamps and unlocks the back door latch through
terminal 12.

The back door control unit supplies power to the magnetic clutch and the back door motor and moves the
back door in the open direction. (At this time, it also executes speed control, input reverse, and anti-pinch
detection control.)

When the back door is opened to the full-open position, the full-open position is detected by the encoder,
and the back door control unit switches the back door motor OFF and the magnetic clutch is pulsed and
then turned OFF.

The back door is held in the fully open position by the gas stays.
Remote Keyless Entry Operation (Fully Closed → Fully Open Operation)

When the keyfob button is pressed for at least 0.5 seconds, back door control unit terminal 21 receives
the signal.

The back door control unit checks the A/T selector lever (P position) through terminal 18, vehicle speed
through terminal 21, ignition status through terminal 7, glass hatch is closed through terminal 17 and bat-
tery voltage is present through terminal 3.

When the back door control unit receives the signal, if the auto back door operating enable conditions are
met, it sends a 5 volt signal through terminal 6 and grounds terminal 9 to sound the warning chime, sends
a signal to the BCM through terminal 4 to flash the hazard lamps and unlocks the back door latch through
terminal 12.

The back door control unit supplies power to the magnetic clutch and the back door motor and moves the
back door in the open direction. (At this time, it also executes speed control, input reverse, and anti-pinch
detection control.)

When the back door is opened to the full-open position, the full-open position is detected by the encoder,
and the back door control unit switches the back door motor OFF and the magnetic clutch is pulsed and
then turned OFF.

The back door is held in the fully open position by the gas stays.

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Back Door Handle Switch Operation (Fully Closed → Fully Open Operation)

When the back door handle is pulled, back door control unit terminal 26 receives the signal.

The back door control unit checks that the back door is unlocked and checks the A/T selector lever (P
position) through terminal 18, vehicle speed through terminal 21, ignition status through terminal 7, glass
hatch is closed, battery voltage and back door close switch position through terminal 13.

When the back door control unit receives the signal, if all auto back door operating enable conditions are
met, it sends a 5 volt signal through terminal 6 and grounds terminal 9 to sound the warning chime, sends
a signal to the BCM through terminal 4 to flash the hazard lamps and unlocks the back door latch through
terminal 12.

The back door control unit supplies power to the magnetic clutch and the back door motor and moves the
back door in the open direction. (At this time, it also executes speed control, input reverse, and anti-pinch
detection control.)

When the back door is opened to the full-open position, the full-open position is detected by the encoder,
and the back door control unit switches the back door motor OFF and the magnetic clutch is pulsed and
then turned OFF.

The back door is held in the fully open position by the gas stays.
Power Liftgate Switch Operation (Fully Open → Fully Closed Operation)

When the power liftgate switch is pressed, the back door control unit terminal 23 receives the signal.

The back door control units checks door position through the rotary encoder.

When the back door control unit receives the signal, if the auto back door operating enable conditions are
met, it sends a signal through terminal 6 and grounds terminal 9 to sound the warning chime and sends a
signal to the BCM through terminal 4 to flash the hazard lamps.

The back door control unit supplies power to the magnetic clutch and the back door motor and move the
back door in the close direction. (At this time, it also executes speed control, input reverse, and anti-pinch
detection control.)

When the back door reaches the half-latch state, the half-latch switch detects this and the signal is sent to
the back door control unit terminal 22.

When the back door control unit receives the half latch switch signal, it switches OFF the back door motor
and the magnetic clutch and operates the cinch latch motor.

When the back door latch operates and full close is detected through terminal 14 of the back door control
unit, the cinch latch motor reverses to the neutral position and the back door auto closure operation ends
and the door is fully closed.
Remote Keyless Entry Operation (Fully Open → Fully Closed Operation)

When the keyfob is pressed for at least 0.5 seconds, the back door control unit terminal 21 receives the
signal.

The back door control units checks door position through the rotary encoder.

When the back door control unit receives the signal, if the auto back door operating enable conditions are
met, it sends a signal through terminal 6 and grounds terminal 9 to sound the warning chime and sends a
signal to the BCM through terminal 4 to flash the hazard lamps.

The back door control unit supplies power to the magnetic clutch and the back door motor and move the
back door in the close direction. (At this time, it also executes speed control, input reverse, and anti-pinch
detection control.)

When the back door reaches the half-latch state, the half-latch switch detects this and the signal is sent to
the back door control unit terminal 22.

When the back door control unit receives the half latch switch signal, it switches OFF the back door motor
and the magnetic clutch and operates the cinch latch motor.

When the back door latch operates and full close is detected through terminal 14 of the back door control
unit, the cinch latch motor reverses to the neutral position and the back door auto closure operation ends
and the door is fully closed.

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Auto Back Door Operation Enable Conditions
Control When Operating Enable Conditions Not Met During Power Open/Close
Control When Operating Enable Conditions No Longer Met
Operation Power liftgate switchRemote keyless entry Back door handle switch Back door
close switch
Operating direction Fully closed
→
open Fully open
→
closed Fully closed
→
open Fully open
→ closed Fully closed
→
open Fully open
→
closed Fully open
→
closed
Close
switch CANCEL or NEUTRAL
NEUTRALNEUTRAL
Vehicle stop
condition A/T selector
lever in P or N
range and vehi-
cle speed less
than 2 km/h or ignition switch
in OFF position —A/T selector
lever in P or N
range and vehi-
cle speed less
than 2 km/h or ignition switch
in OFF position —A/T selector
lever in P or N
range and vehi-
cle speed less
than 2 km/h or ignition switch
in OFF position ——
Battery volt-
age Approx. 11V or more
Back door
lock status ————
Unlocked——
Glass hatch Closed
ItemsOperation condition Not met caseControl
A/T selector lever P position P or N position with ignition ON
or any position with ignition
OFFOther
Continue power open or close,
but sounds warning chime.
Back door close switch NEUTRAL CANCEL
Cancels power open/close
operation or door will release to
manual mode.
Voltage drop
11V or more11 > V > 9
9 > V > reset voltage
reset voltage > V
No power function available
Handle switch Normal (GND)Error (OPEN) No operation. Cancel power
open/close release to manual.
Glass hatch ClosedOFF Cancels power door open oper-
ation, door will release to man-
ual mode.
Description
Operation Control
Back door close switch turned to CANCEL Warning chime active
→
Shift to manual mode after full open or
close operation is complete
(Recovery to power mode when main
switch turned OFF or door fully closed) →
Shift to manual mode
A/T selector lever P or N position with igni-
tion switch ON Warning chime active and one-way opera-
tion continuous
(Warning chime inactive and door fully
open or fully closed or operating conditions
recovered)Full open: power close operation allowed
Full close: operating conditions not met
→
no power open function.
Voltage drop 11 - 9V One-way operation continued (equivalent
to the case of starting voltage
← 11 V f o r
handle operation with warning chime
active) Not allowed
Voltage drop less than 9V
(Microcomputer reset voltage - clutch hold
voltage)

Motor stopped

Clutch may slip

Control not possible because microcom-
puter being reset Control not possible because microcom-
puter being reset