2010 INFINITI QX56 Ignition switch

DLK-174
< ECU DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
INTELLIGENT KEY UNIT
Terminal Layout - Intelligent Key Unit
INFOID:0000000005380590
Physical Values - Intelligent Key UnitINFOID:0000000005380591
DOOR BK SW Back door opener switch OFF CLOSE
While the back door opener switch is turned ON
OPEN
VEHICLE SPEED While driving Equivalent to speedo meter reading
Monitor Item
Condition Value/Status
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
OCC3879D
Revision: April 20092010 QX56

INTELLIGENT KEY UNITDLK-175
< ECU DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
C
D
E
F
G H
I
J
L
M A
B
DLK
N
O P
11 Y Power source (Fuse) — —Battery voltage
12 B Ground —— 0
13 B/W Center console area
antenna (front) (+)
signal
LOCK Any door open → all doors closed
14 W/G Center console area
antenna (front) (-)
signal
15 G Center console area
antenna (rear) (+)
signal
LOCK Any door open → all doors closed
16 L Center console area
antenna (rear) (-) sig-
nal
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
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: April 20092010 QX56

DLK-176
< ECU DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
INTELLIGENT KEY UNIT
29 LG/WBack door open
switch input —Back door handle switch ON.
0
Back door handle switch OFF. Battery voltage
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 Overhead console
area antenna (+) sig-
nal
LOCKPress ignition knob switch: ON (Ignition
knob switch)
34 BR Overhead console
area antenna (-) sig-
nal
35 O Luggage area anten-
na (+) signal
LOCK Back door open → all doors closed
36 R Luggage area anten-
na (-) 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: April 20092010 QX56

INTELLIGENT KEY UNITDLK-177
< ECU DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
C
D
E
F
G H
I
J
L
M A
B
DLK
N
O P
Terminal Layout - Steering Lock SolenoidINFOID:0000000005380592
Physical Values - Stee ring Lock SolenoidINFOID:0000000005380593
WIIA1169E
Te r m i n a lWire
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: April 20092010 QX56

DLK-196
< ECU DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
INTELLIGENT KEY UNIT
DTC Inspection Priority Chart
INFOID:0000000005380596
If some DTCs are displayed at the same time, perform inspections one by one based on the following priority
chart.
DTC IndexINFOID:0000000005380597
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 malfunction is pr esent when current condition is normal. It increases 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 condition if the malfunction is detected again.
Priority DTC
1 • U1000: CAN COMM CIRCUIT
• U1010: CONTROL UNIT (CAN)
2 • B2190: NATS ANTENNA AMP
• B2191: DIFFERENCE OF KEY
• B2192: ID DISCORD BCM-ECM
• B2193: CHAIN OF BCM-ECM
• B2194: ID DISCORD IMMU-I-KEY
3 • B2013: ID DISCORD BCM-S/L
• B2552: INTELLIGENT KEY
• B2590: ID DISCORD BCM-I-KEY
• P1610: LOCK MODE
• P1611: ID DISCORD, IMMU-ECM
• P1612: CHAIN OF ECM-IMMU
• P1614: CHAIN OF IMMU-KEY
• P1615: DIFFERENCE OF KEY
CONSULT display
Fail-safeFreeze Frame Data
•Vehicle Speed
•Odo/Trip Meter
•Vehicle Condition Intelligent Key warn-
ing lamp ON Reference page
No DTC is detected.
Further testing
may be required. ————
U1000: CAN COMM ———DLK-58
U1010: CONTROL UNIT(CAN) ———DLK-59
B2013: ID DISCORD BCM-S/L ××—SEC-28
B2190: NATS ANTENNA AMP ×—— SEC-31
B2191: DIFFERENCE OF KEY ×—— SEC-34
B2192: ID DISCORD BCM-ECM ×—— SEC-35
B2193: CHAIN OF BCM-ECM ×—— SEC-37
B2194: ID DISCORD IMMU-I-KEY ×—— SEC-38
B2552: INTELLIGENT KEY —×× SEC-39
B2590: IID DISCORD BCM-I-KEY —×× SEC-40
P1610: LOCK MODE —×× SEC-41
P1611: ID DISCORD, IMMU-ECM —×× SEC-42
P1612: CHAIN OF ECM-IMMU —— ×SEC-44
P1614: CHAIN OF IMMU-KEY ××× SEC-45
P1615: DIFFERENCE OF KEY—×× SEC-48
Revision: April 20092010 QX56

BACK DOOR CONTROL UNITDLK-197
< ECU DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
C
D
E
F
G H
I
J
L
M A
B
DLK
N
O P
BACK DOOR CONTROL UNIT
Reference ValueINFOID:0000000005147029
TERMINAL LAYOUT
PHYSICAL VALUES
LIIA2444E
Te r m i n a l Wire Col-
or Item
Condition Voltage (V)
(Approx.)
1 B Ground ——
2 B Ground ——
3 Y/R Battery power supply —Battery voltage
4 G Hazard lamp output Request to flash hazardsPulse must be >50ms
but less than 250ms
5 B/P Pinch strip ground ——
6 R Warning chime output Back door motor activeBattery voltage
7 G/R Ignition switch Ignition switch ON
Battery voltage
Ignition switch OFF 0
8 GR/B Back door close switch Close position ON
0
Neutral position OFF Battery voltage
9 L Warning chime ground ——
10 L/B Battery power —Battery voltage
11 Y Cinch latch motor
CLOSE output Back door close operation
Battery voltage
12 L Closure motor
RETURN output Back door release operation
Battery voltage
13 P/L Back door close switch Cancel position
0
Neutral position 5
14 P Close switch signal While fully opening back door
PIIA3278E
WIIA1047E
Revision: April 20092010 QX56

DLK-198
< ECU DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
BACK DOOR CONTROL UNIT
15 O/L Open switch signal
While fully closing back door
17 GR Glass hatch ajar signal Glass hatch OPEN
0
Glass hatch CLOSED 5
18 GR/R Park switch P or N position (Ignition is ON)
0
Other (Ignition is ON) 9
19 BR/B Pinch strip RH Detecting obstruction
0
Other 5
20 V/G Pinch strip LH Detecting obstruction
0
Other 5
21 W/V Power window serial link —
22 BR Half switch signal Back door half latch position
23 L/W Power liftgate switch ON
0
OFF Battery voltage
26 V Outside handle signal Back door handle switch (at rest)
Battery voltage
Back door handle switch (open) 0
Te r m i n a l
Wire Col-
or Item
Condition Voltage (V)
(Approx.)
WIIA1047E
PIIA2344E
PIIA2169E
Revision: April 20092010 QX56

DLK-210
< SYMPTOM DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
INTELLIGENT KEY SYSTEM SYMPTOMS
SYMPTOM DIAGNOSIS
INTELLIGENT KEY SYSTEM SYMPTOMS
Symptom TableINFOID:0000000005147032
ALL FUNCTIONS OF INTELLIGENT KEY SYSTEM DO NOT OPERATE
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 syst ems shown in the “Diagnosis/service procedure” column
in this order.
Conditions of Vehicle (Operating Conditions)
• “ENGINE START BY I-KEY” and “LOCK/UNLOCK BY I-KEY” are ON when se tting on CONSULT-III.
• All doors are closed.
Symptom Diagnosis/service procedureReference page
All doors and ignition switch do not respond to
Intelligent Key command. 1. Check Intelligent Key function and battery inspection.
DLK-106
2. Check Intelligent Key unit power supply and ground circuit. DLK-68
3. Check remote keyless entry receiver.DLK-103
4. Check BCM power supply and ground circuit. DLK-68
5. Replace Intelligent Key unit.DLK-106
Revision: April 20092010 QX56