lock INFINITI QX56 2009 Factory Service Manual

BCM (BODY CONTROL MODULE)SEC-53
< ECU DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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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: December 20092009 QX56

BCM (BODY CONTROL MODULE)SEC-55
< ECU DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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44 O Rear wiper auto stop
switch 1 Input ONRise up position (rear wiper
arm on stopper)
0V
A Position (full clockwise stop
position) Battery voltage
Forward sweep (counterclock-
wise direction) Fluctuating
B Position (full counterclock-
wise stop position) 0V
Reverse sweep (clockwise di-
rection) Fluctuating
47 SB Front door switch LH Input OFF ON (open)
0V
OFF (closed) Battery voltage
48 R/Y Rear door switch LH Input OFF ON (open)
0V
OFF (closed) Battery voltage
49 R Cargo lamp Output OFFAny door open (ON)
0V
All doors closed (OFF) Battery voltage
51 G/Y Trailer turn signal
(right) Output ON Turn right ON
52 G/B Trailer turn signal (left) Output ON Turn left ON
53 L/W Glass hatch lock actu-
ator
Output OFFGlass hatch switch released
0
Glass hatch switch pressed Battery
54 Y Rear wiper output cir-
cuit 2 Input ONRise up position (rear wiper
arm on stopper)
0V
A Position (full clockwise stop
position) 0V
Forward sweep (counterclock-
wise direction) 0V
B Position (full counterclock-
wise stop position) Battery voltage
Reverse sweep (clockwise di-
rection) Battery voltage
55 SB Rear wiper output cir-
cuit 1 Output ONOFF
0
ON Battery voltage
56 R/G Battery saver output Output OFF
30 minutes after ignition
switch is turned OFF 0V
ON — Battery voltage
57 Y/R Battery power supply Input OFF —Battery voltage
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
SKIA3009J
SKIA3009J
Revision: December 20092009 QX56

SEC-56
< ECU DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
BCM (BODY CONTROL MODULE)
58 W/R Optical sensor
Input ONWhen optical sensor is illumi-
nated
3.1V or more
When optical sensor is not illu-
minated 0.6V or less
59 G Front door lock as-
sembly LH actuator
(unlock) Output OFF
OFF (neutral)
0V
ON (unlock) Battery voltage
60 G/B Turn signal (left) Output ON Turn left ON
61 G/Y Turn signal (right) Output ON Turn right ON
62 R/W Step lamp LH and RH Output OFF ON (any door open)
0V
OFF (all doors closed) Battery voltage
63 L Interior room/map
lamp Output OFFAny door
switchON (open)
0V
OFF (closed) Battery voltage
65 V All door lock actuators
(lock) Output OFFOFF (neutral)
0V
ON (lock) Battery voltage
66 G/Y Front door lock actua-
tor RH, rear door lock
actuators LH/RH and
back door lock actua-
tor (unlock) Output OFF
OFF (neutral)
0V
ON (unlock) Battery voltage
67 B Ground Input ON—0V
68 W/L Power window power
supply (RAP) Output —Ignition switch ON
Battery voltage
Within 45 seconds after igni-
tion switch OFF Battery voltage
More than 45 seconds after ig-
nition switch OFF 0V
When front door LH or RH is
open or power window timer
operates 0V
69 W/R Power window power
supply
Output —
—Battery voltage
70 W/B Battery power supply Input OFF —Battery voltage
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
SKIA3009J
SKIA3009J
Revision: December 20092009 QX56

INTELLIGENT KEY UNITSEC-79
< ECU DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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INTELLIGENT KEY UNIT
Reference Value - Intelligent Key UnitINFOID:0000000004221485
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: December 20092009 QX56

SEC-80
< ECU DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
INTELLIGENT KEY UNIT
13 B/WInside key antenna 3
(front of center con-
sole) (+) signal
LOCK Any door open → all doors closed
14 W/G Inside key antenna 3
(front of center con-
sole) (-) signal
15 G Inside key antenna 1
(rear of center con-
sole) (+) signal
LOCK Any door open → all doors closed
16 L Inside key antenna 1
(rear of center con-
sole) (-) signal
17 W/L Rear bumper anten-
na (+) signal
LOCK Lift back door handle (close switch).
18 W/R Rear bumper anten-
na (-) signal
19 P Front outside anten-
na LH (+) signal
LOCK Press front door request switch LH.
20 V Front outside anten-
na LH (-) signal
21 B/W Remote keyless en-
try receiver RSSI sig-
nal ——
23 L/W Power back door out-
put —Power liftgate switch ON.
0
Power liftgate switch OFF. Battery voltage
25 P/L Front door request
switch RH —Press front door request switch RH.
0
Other than above Battery voltage
27 R/B Ignition knob switch — Press ignition switch.
Battery voltage
Return ignition switch to LOCK position. 0
28 R Unlock sensor
(driver side) —Door (driver si
de) is locked. 5
Door (driver side ) is unlocked. 0
29 LG/W Back door open
switch input —Back door handle switch ON.
0
Back door handle switch OFF. Battery voltage
Te r m i n a l
Wire
Color Item Condition
Voltage (V)Approx.
Ignition
Switch Po-
sition Operation or Conditions
PIIB7441E
PIIB7441E
SIIA1910J
SIIA1910J
PIIA2344E
Revision: December 20092009 QX56

INTELLIGENT KEY UNITSEC-81
< ECU DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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30 G/B Remote keyless en-
try receiver power
supply
—— 5
32 L/O Steering lock sole-
noid communication
signal LOCKWhen Intelligent Key is inside vehicle,
press ignition knob switch.
Other than above
5
33 W Inside key antenna 4
(overhead console
area) (+) signal
LOCKPress ignition knob switch: ON (Ignition
knob switch)
34 BR Inside key antenna 4
(overhead console
area) (-) signal
35 O Inside key antenna 2
(luggage compart-
ment) (+) signal
LOCK Back door open → all doors closed
36 R Inside key antenna 2
(luggage compart-
ment) (-) signal
37 LG Front outside anten-
na (+) signal RH
LOCK Press front door request switch RH.
38 B/Y Front outside anten-
na (-) signal RH
39 L/R P range switch —Selector lever is in “P” position.
0
Other than above Battery voltage
40 V AS select unlock out-
put
—UNLOCK with rear door locks disabled.
0
Other than above Battery voltage
Te r m i n a l
Wire
Color Item Condition
Voltage (V)Approx.
Ignition
Switch Po-
sition Operation or Conditions
SIIA1911J
PIIB7441E
PIIB7441E
SIIA1910J
Revision: December 20092009 QX56

SEC-82
< ECU DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
INTELLIGENT KEY UNIT
Reference Value - Steering Lock Solenoid
INFOID:0000000004221486
TERMINAL LAYOUT
PHYSICAL VALUES
WIIA1169E
Te r m i n a l Wire
Color Signal Designation Condition
Voltage (V)Approx.
Ignition
Switch Posi- tion Operation or Conditions
1 G/Y Power source (fuse) LOCK —Battery voltage
2L/Y Steering lock solenoid
power supply LOCK
— 5
3L/O Steering lock solenoid
communication signal
LOCKWhen Intelligent Key is inside ve-
hicle, press ignition knob switch.
Other than the above
5
4B Steering lock solenoid
ground —— 0
SIIA1911J
Revision: December 20092009 QX56

INTELLIGENT KEY UNITSEC-95
< ECU DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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Fail SafeINFOID:0000000003775938
DTC Inspection Priority ChartINFOID:0000000003775939
If some DTCs are displayed at the same time, perform inspections one by one based on the following priority
chart.
DTC IndexINFOID:0000000003775940
NOTE: Details of time display
• CRNT: Displays when there is a malfunction now or after returning to the normal condition until turning igni- tion switch OFF → ON again.
• 1 - 39: Displayed if any previous ma lfunction is present when current conditi on is normal. It increases like 1
→ 2 → 3...38 → 39 after returning to the normal condition whenever ignition switch OFF → ON. The counter
remains at 39 even if the number of cycles exceeds it. It is counted from 1 again when turning ignition switch
OFF → ON after returning to the normal condi tion if the malfunction is detected again.
Display contents of CONSULT-III Fail-safeCancellation
B2013: STRG COMM 1 • Inhibits steering look unlocking Erase DTC
B2552: INTELLIGENT KEY • Inhibits steering look unlocking
• Inhibits engine cranking
(BCM)
•Fuel cut (ECM) Erase DTC
B2590: NATS MALFUNCTION • Inhibits steering look unlocking
• Inhibits engine cranking
(BCM)
•Fuel cut (ECM) Erase DTC
Priority
DTC
1 • U1000: CAN COMM CIRCUIT
• U1010: CONTROL UNIT (CAN)
• B2552: INTELIGENT KEY
2 • B2013: STRG COMM 1
• B2590: NATS MALFUNCTION
CONSULT display
Detection conditionFail-safe Diagnosis
No DTC is detected.
further testing
may be required. ——
—
U1000: CAN COMM CIRCUIT Intelligent Key unit cannot receive CAN communi-
cation signal continuously for 2 seconds or more.
—Check CAN communi-
cation system.
Refer to SEC-22
U1010: CONTROL UNIT (CAN)
Intelligent Key unit detects internal CAN communi-
cation circuit malfunction.
—Replace Intelligent Key
unit.
B2013: STRG COMM 1 The ID verification result between Intelligent key
unit and steering lock solenoid are NG. Or Intelligent
Key unit cannot communicate with steering lock so-
lenoid. ×
Perform steering lock
solenoid ID registration
with CONSULT-III
B2552: INTELLIGENT KEY Intelligent Key unit internal malfunction. ×Replace Intelligent Key
unit.
B2590: NATS MALFUNCTION The ID verification result between Intelligent key
unit and BCM are NG. Or Intelligent Key unit cannot
communicate with BCM. ×
Check NATS
Refer to SEC-36
Revision: December 20092009 QX56

SEC-96
< ECU DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
IPDM E/R (INTELLIGENT POWER DI
STRIBUTION MODULE ENGINE ROOM)
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE
ROOM)
Reference ValueINFOID:0000000004221479
VALUES ON THE DIAGNOSIS TOOL
Monitor Item ConditionValue/Status
MOTOR FAN REQ Engine idle speed Changes depending on engine
coolant temperature, air conditioner
operation status, vehicle speed,
etc.0 - 100 %
A/C COMP REQ A/C switch OFF
OFF
A/C switch ON ON
TAIL&CLR REQ Lighting switch OFF
OFF
Lighting switch 1ST, 2ND, HI or AUTO (Light is illuminated) ON
HL LO REQ Lighting switch OFF
OFF
Lighting switch 2ND HI or AUTO (Light is illuminated) ON
HL HI REQ Lighting switch OFF
OFF
Lighting switch HI ON
FR FOG REQ Lighting switch 2ND or AUTO (Light
is illuminated) Front fog lamp switch OFF OFF
• Front fog lamp switch ON
• Daytime light activated (Canada
only) ON
HL WASHER REQ NOTE:
This item is displayed, but cannot be monitored.
OFF
FR WIP REQ Ignition switch ON Front wiper switch OFF
STOP
Front wiper switch INT 1LOW
Front wiper switch LO LOW
Front wiper switch HI HI
WIP AUTO STOP Ignition switch ON Front wiper stop position
STOP P
Any position other than front wiper
stop position ACT P
WIP PROT Ignition switch ON Front wiper operates normally OFF
Front wiper stops at fail-safe opera-
tion
BLOCK
ST RLY REQ Ignition switch OFF or ACC
OFF
Ignition switch START ON
IGN RLY Ignition switch OFF or ACC
OFF
Ignition switch ON ON
RR DEF REQ Rear defogger switch OFF
OFF
Rear defogger switch ON ON
OIL P SW Ignition switch OFF, ACC or engine running
OPEN
Ignition switch ON CLOSE
DTRL REQ Daytime light system requested OFF with CONSULT-III.
OFF
Daytime light system requested ON with CONSULT-III. ON
HOOD SW Hood closed.
OFF
Hood open. ON
Revision: December 20092009 QX56

IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
SEC-97
< ECU DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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THFT HRN REQ Not operated
OFF
• Panic alarm is activated
• Horn is activated with VEHICLE SECURITY (THEFT WARNING) SYS-
TEM ON
HORN CHIRP Not operated
OFF
Door locking with Intelligent Key (horn chirp mode) ON
Monitor Item
ConditionValue/Status
Revision: December 20092009 QX56