2009 INFINITI QX56 ignition

KEY SWITCH (BCM INPUT)DLK-115
< COMPONENT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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KEY SWITCH (BCM INPUT)
Diagnosis ProcedureINFOID:0000000003775795
1.CHECK KEY SWITCH POWER SUPPLY CIRCUIT
1. Remove mechanical key from ignition switch.
2. Disconnect key switch and i gnition knob switch connector.
3. Check voltage between key switch and ignition knob switch har- ness connector M12 terminal 3 and ground.
Is the inspection result normal?
YES >> GO TO 2
NO >> Check harness between key switch and ignition knob switch and fuse.
2.CHECK KEY SWITCH
Check continuity between key switch and ignition knob switch termi-
nals 3 and 4.
Is the inspection result normal?
YES >> GO TO 3
NO >> Replace key cylinder assembly (built-in key switch).
3.CHECK KEY SWITCH SIGNAL CIRCUIT
1. Disconnect BCM connector.
2. Check continuity between BCM harness connector M18 terminal 37 and key switch and ignition knob switch harness connector
M12 terminal 4.
3. Check continuity between BCM harness connector M18 terminal 37 and ground.
Is the inspection result normal?
YES >> Key switch (BCM input) circuit is OK.
NO >> Repair or replace harness between key switch and ignition knob switch and BCM. 3 – Ground
: Battery voltage.
PIIB4254E
Component Terminals ConditionContinuity
Ignition switch 34 Insert mechanical key
into ignition switch.
Ye s
Remove mechanical key
from ignition switch. No
PIIA6140E
37 – 4
: Continuity should exist.
37 – Ground : Continuity should not exist.
PIIB4256E
Revision: December 20092009 QX56

DLK-116
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
IGNITION KNOB SWITCH
IGNITION KNOB SWITCH
Ignition Knob
Switch CheckINFOID:0000000003775796
1.CHECK IGNITION KNOB SWITCH
With CONSULT-III
Display “PUSH SW” on DATA MONITOR screen, and check if ON/OFF display is linked to ignition switch oper-
ation.
Without CONSULT-III
1. Turn ignition switch OFF.
2. Disconnect Intelligent Key unit connector.
3. Check voltage between Intelligent Key unit harness connector M70 terminal 27 and ground.
Is the inspection result normal?
YES >> Ignition knob switch is OK.
NO >> GO TO 2
2.CHECK IGNITION KNOB SWITCH POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect key switch and ignition knob switch connector.
3. Check voltage between key switch and ignition knob switch harness connector M12 terminal 1 and ground.
Is the inspection result normal?
YES >> GO TO 3
NO >> Repair or replace key switch and ignition knob switch power supply circuit.
3.CHECK IGNITION KNOB SWITCH OPERATION
Check continuity between key switch and ignition knob switch terminals 1 and 2.
Monitor item Condition
PUSH SW Ignition switch is pushed: ON
Ignition switch is released: OFF
ConnectorTe r m i n a l s
ConditionVoltage (V)
(Approx.)
(+) (–)
M70 27 Ground Ignition switch is
pushed
Battery voltage
Ignition switch is re-
leased 0
WIIA1175E
1 - Ground
: Battery voltage
PIIB4257E
Revision: December 20092009 QX56

IGNITION KNOB SWITCHDLK-117
< COMPONENT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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Is the inspection result normal?
YES >> GO TO 4
NO >> Replace key switch and ignition knob switch.
4.CHECK IGNITION KN OB SWITCH CIRCUIT
1. Check continuity between Intelligent Key unit harness connector (A) M70 terminal 27 and key switch and ignition knob switch harness c onnector (B) M12 terminal 2.
2. Check continuity between Intelligent Key unit harness connector M70 terminal 27 and ground.
Is the inspection result normal?
YES >> Check the condition of harness and harness connector.
NO >> Repair or replace harness between Intelligent Key unit and key switch and ignition knob switch.
Component Terminals ConditionContinuity
Ignition
knob switch 12 Ignition switch is pushed Yes
Ignition switch is released No
PIIA9929E
27 - 2
: Continuity should exist.
27 - Ground : Continuity should not exist.
WIIA1176E
Revision: December 20092009 QX56

MAP LAMP AND IGNITION KEYHOLE ILLUMINATION FUNCTIONDLK-119
< COMPONENT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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MAP LAMP AND IGNITION KEYHOLE ILLUMINATION FUNCTION
Diagnosis ProcedureINFOID:0000000003775798
1.CHECK MAP LAMP OPERATION
When room lamp switch is in "DOOR" position, open the driver or passenger door.
Map lamp and ignition keyhole illumination should illuminate.
Is the inspection result normal?
YES >> Map lamp circuit is OK.
NO >> Check map lamp circuit. Refer to INL-3, "
Work Flow".
Revision: December 20092009 QX56

DLK-120
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
KEYFOB ID SET UP WITH CONSULT-III
KEYFOB ID SET UP WITH CONSULT-III
ID Code Entry ProcedureINFOID:0000000003775799
KEYFOB ID SET UP WITH CONSULT-III
NOTE:
•
If a keyfob is lost, the ID code of the lost keyfob must be erased to prevent unauthorized use. A spe-
cific ID code can be erased with CONSULT-III. Ho wever, when the ID code of a lost keyfob is not
known, all controller ID codes should be erased. After all ID codes are erased, the ID codes of all
remaining and/or new keyfobs must be re-registered.
• When registering an additional keyfob, the existing ID codes in memory may or may not be erased. If
five ID codes are stored in memory when an additi onal code is registered, only the oldest code is
erased. If less than five codes are stored in memory when an additional code is registered, the new
ID code is added and no ID codes are erased.
• Entry of a maximum of five ID codes is allowed. Wh en more than five codes are entered, the oldest ID
code will be erased.
• Even if the same ID code that is already in memory is input, the same ID code can be entered. The
code is counted as an additional code.
1. Turn ignition switch ON.
2. Select “BCM”.
3. Select “MULTI REMOTE ENT”.
4. Select “WORK SUPPORT”.
5. You can register, erase or confirm a keyfob ID code. To register a new code, select the following option
and follow CONSULT-III instructions:
• “REMO CONT ID REGIST” Use this mode to register a keyfob ID code.
NOTE:
Register the ID code when keyfob or BCM is re placed, or when additional keyfob is required.
• “REMO CONT ID ERASUR” Use this mode to erase a keyfob ID code.
• “REMO CONT ID CONFIR”
Use this mode to confirm if a ke yfob ID code is registered or not.
Revision: December 20092009 QX56

AUTOMATIC BACK DOOR SELF-DIAGNOSIS PROCEDUREDLK-123
< COMPONENT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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AUTOMATIC BACK DOOR SELF-DIAGNOSIS PROCEDURE
Self-Diagnosis ProcedureINFOID:0000000003775801
INPUT SIGNAL CHECK MODE
Input signal check mode allows testing of swit ch input signal to the back door control unit.
To activate input signal check mode on the automatic sliding door, perform the following steps:
1. Turn ignition switch OFF.
2. Turn back door close switch to CANCEL (system cancelled).
3. Place A/T shift selector in P position.
4. Using the inside emergency release lever, open the back door.
5. Have an assistant press and hold the back door handle switch.
6. While the assistant continues to hold the back door handle switch, turn ignition switch ON (DO NOT start
engine).
7. After approximately 5 seconds, the back door warning chime will sound for 0.5 seconds.
8. Release the back door handle switch.
9. Within 8 seconds of the back door warning chime sounding, press and hold the power liftgate switch.
10. After approximately 5 seconds, the back door warning chime will sound for 1 second.
11. Release the power liftgate switch.
12. The input signal check mode is now initialized.
The input signal check mode can test the following inputs. The back door warning chime will sound for approx-
imately 0.5 second each time a switch signal input oc curs. Use this test when one of these inputs is not
responding during normal automatic back door operation.
*Back door warning chime should sound as soon as vehicle moves.
Turn ignition switch OFF to end input signal check mode.
OPERATING CHECK MODE
Operating check mode allows self-diagnos is of the automatic back door system.
To activate operating check mode on the automatic back door, perform the following steps:
1. Turn ignition switch OFF.
2. Turn back door close switch to CANCEL (system cancelled).
3. Place A/T shift selector in P position.
4. Using the inside emergency release lever, open the back door.
5. Have an assistant press and hold the back door handle switch.
6. While the assistant continues to hold the back door handle switch, turn ignition switch ON (DO NOT start engine).
7. After approximately 5 seconds, the back door warning chime will sound for 0.5 second.
8. Release the back door handle switch.
Switch signal OperationRefer to
Power liftgate switch OFF → ONDLK-129
Back door close switch (CLOSE) OFF → ON DLK-131
Back door close switch (CANCEL) OFF → ON DLK-132
Back door handle switch OFF → ON DLK-138
A/T shift selector (park position switch) P position → other than P position DLK-101
Vehicle speed* Vehicle speedTM-49
Remote keyless entry signal Keyfob switch OFF → ON DLK-103
Door lock/unlock signal LOCK → UNLOCK DLK-74
Pinch strip LH signal OFF → ON DLK-133
Pinch strip RH signal OFF → ON DLK-133
Revision: December 20092009 QX56

DLK-124
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
AUTOMATIC BACK DOOR SELF-DIAGNOSIS PROCEDURE
9. Within 8 seconds of the back door warning chime
sounding, press the power liftgate switch 5 times in
rapid succession.
10. After approximately 5 seconds, the back door warning chime will sound for 1 second.
11. Release the power liftgate switch.
12. Immediately close the back door manually.
13. Press and release the power liftgate swit ch to activate the operating check mode.
Self-diagnosis results are indicated by the back door warning chime.
Turn ignition switch OFF to end input signal check mode.
Back door warning chime order Back door warning chime length
Start self-diagnosis 1.5 seconds
OK NG
1. Operating conditions diagnosis 0.5 second0.2 second
2. Back door encoder diagnosis 0.5 second0.2 second
3. Back door clutch diagnosis 0.5 second0.2 second
4. Back door motor diagnosis 0.5 second0.2 second
5. Cinch latch motor diagnosis 0.5 second0.2 second
Restart self-diagnosis 1.5 seconds
ItemNG ResultRefer to
1. Operating conditions diagnosis result One of the following operating conditions no
longer met: ignition switch ON, back door close
switch (CANCEL) ON, A/T shift selector in P
position—
2. Back door encoder diagnosis result Sensor diagnosis/short, pulse signal, pulse
signal directionDLK-243
3. Back door clutch diagnosis result
Back door clutch does not operateDLK-243
4. Back door motor diagnosis result Back door motor does not operate (no operat-
ing current)
DLK-243
5. Cinch latch motor diagnosis result Cinch latch motor does not operate (no operat-
ing current)DLK-243
Revision: December 20092009 QX56

POWER LIFTGATE SWITCH FUNCTIONDLK-125
< COMPONENT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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POWER LIFTGATE SWITCH FUNCTION
Diagnosis ProcedureINFOID:0000000003775802
1.POWER LIFTGATE SWITCH FUNCTION INSPECTION
Check power liftgate switch using switch operation.
Did the back door respond correctly?
YES >> Power liftgate switch is OK.
NO >> GO TO 2
2.POWER LIFTGATE SWITCH SIGNAL INSPECTION
1. Turn ignition switch OFF.
2. While operating the power liftgate switch, check voltage between back door control unit connector B55 terminal 23 and
ground.
Is the inspection result normal?
YES >> Switch is OK.
NO >> GO TO 3
3.POWER LIFTGATE SWITCH CIRCUIT INSPECTION
1. Disconnect back door control unit and power liftgate switch connectors.
2. Check continuity between back door control unit connector (A) B55 terminal 23 and power liftgate switch connector (B) M92 ter-
minal 1.
3. Check continuity between back door control unit connector (A) B55 terminal 23 and ground.
Is the inspection result normal?
YES >> GO TO 4
NO >> Repair the harness between the power liftgate switch and the back door control unit.
4.POWER LIFTGATE SWITCH GROUND INSPECTION
Check continuity between power liftgate switch connector terminal 2
and ground.
Is the inspection result normal?
YES >> GO TO 5
NO >> Repair the harness between the power liftgate switch and ground.
5.POWER LIFTGATE SWITCH POWER SUPPLY CIRCUIT INSPECTION
1. Reconnect back door control unit.
2. Ensure liftgate is closed.
Te r m i n a l Measuring condition Voltage (V)
(Approx.)
(+) (-)
23 GroundPower liftgate
switch ON
0
OFF Battery voltage
LIIA0802E
23 - 1 : Continuity should exist.
23 - Ground : Continuity should not exist.
ALKIA0670ZZ
2 - Ground : Continuity should exist.
LIIA1065E
Revision: December 20092009 QX56