INFINITI FX35 2007 Service Manual

INTELLIGENT KEY SYSTEM BL-129
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Revision: 2006 July 2007 FX35/FX45
Check Door SwitchNIS001NQ
CHECK DOOR SWITCH (EXCEPT BACK DOOR SWITCH)
1. CHECK DOOR SWITCH INPUT SIGNAL
1. Turn ignition knob LOCK position.
2. Check voltage between BCM connector and ground.
OK or NG
OK >> Door switch circuit is OK.
NG >> GO TO 2.
2. CHECK DOOR SWITCH CIRCUIT
1. Disconnect door switch and BCM connector.
2. Check continuity between door switch connector B26, B36, B46, B206 terminals 1 and BCM connector M3, B14 terminals 62, 12, 63, 13.
3. Check continuity between door switch connector B26, B36, B46, B206 terminal 1 and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.
Item Connector Terminals
(Wire color) Door
condition Voltage (V)
(Approx.)
(+) (-)
Driver side B14 62 (W)
Ground CLOSE
↓
OPEN Battery voltage
↓ 0
Rear LH 63 (P)
Passenger side M3 12 (P/B)
Rear RH 13 (P/L)
PIIA7003E
Driver side door
1 (W) –62 (W) : Continuity should exist.
Passenger side door
1 (SB) – 12 (P/B) : Continuity should exist.
Rear door LH
1 (P) – 63 (P) : Continuity should exist.
Rear door RH
1 (P) – 13 (P/L) : Continuity should exist.
1 (W, SB, P) – Ground : Continuity should not exist.
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BL-130
INTELLIGENT KEY SYSTEM
Revision: 2006 July 2007 FX35/FX45
3. CHECK DOOR SWITCH
Check continuity between door switch terminal 1 and ground part of door switch.
OK or NG
OK >> Check door switch case ground condition.
NG >> Replace door switch.
CHECK BACK DOOR SWITCH
1. CHECK BACK DOOR SWITCH INPUT SIGNAL
Check voltage between BCM connector and ground.
OK or NG
OK >> Back door switch circuit is OK.
NG >> GO TO 2.
2. CHECK HARNESS CONTINUITY
1. Turn ignition switch OFF.
2. Disconnect BCM and back door closure motor connector.
3. Check continuity between BCM connector B14 terminal 58 and back door closure motor connector D109 terminal 7.
4. Check continuity between BCM connector B14 terminal 58 and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.
Terminal Door switch condition Continuity
1 Ground part of door switch Pushed No
Released Yes
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Connector Terminals (Wire color)
Condition Voltage (V)
(Approx.)
(+) (–)
B14 58 (L) Ground OPEN 0
CLOSE 9
PIIA6229E
58 (L) – 7 (L) : Continuity should exist.
58 (L) – Ground : Continuity should not exist.
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INTELLIGENT KEY SYSTEM BL-131
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Revision: 2006 July 2007 FX35/FX45
3. CHECK GROUND CIRCUIT
Check continuity between back door closure motor connector D109
terminal 8 and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace harness.
4. CHECK BACK DOOR SWITCH
Check continuity between back door closure motor D109 terminals 7
and 8.
OK or NG
OK >> GO TO 5.
NG >> Replace back door closure motor.
5. CHECK BCM OUTPUT SIGNAL
1. Connect BCM connector.
2. Check voltage between BCM connector and ground.
OK or NG
OK >> Check condition of harness and connector.
NG >> Replace BCM.
Check Unlock SensorNIS001NR
1. CHECK UNLOCK SENSOR POWER SUPPLY
Check voltage between Intelligent Key unit connector and ground.
OK or NG
OK >> Unlock sensor is OK.
NG >> GO TO 2. 8 (B) – Ground : Continuity should exist.
PIIA6170E
Terminals Back door condition Continuity
78 Open Yes
Close No
PIIA9934E
58 (L) – Ground : Approx. 9V
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Connector Terminals (Wire color)
Condition Voltage (V)
(Approx.)
(+) (-)
M34 28 (W/B) Ground Driver side door lock is
locked 5
Driver side door lock is
unlocked 0
PIIA6802E

BL-132
INTELLIGENT KEY SYSTEM
Revision: 2006 July 2007 FX35/FX45
2. CHECK UNLOCK SENSOR CIRCUIT
1. Turn ignition knob LOCK position.
2. Disconnect Intelligent Key unit and front door lock assembly (driver side) connector.
3. Check continuity between Intelligent Key unit connector M34 terminal 28 (W/B) and front door lock assembly (driver side) connector D10 terminal 4 (W).
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness between Intelligent Key unit and front door lock assembly (driver side).
3. CHECK UNLOCK SENSOR GROUND CIRCUIT
Check continuity between front door lock assembly (driver side) connector D10 terminal 5 (B) and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace harness.
4. CHECK INTELLIGENT KEY UNIT OUTPUT SIGNAL
1. Connect Intelligent Key unit connector.
2. Driver side door lock is locked.
3. Check voltage between Intelligent Key unit connector M34 terminal 28 (W/B) and ground.
OK or NG
OK >> Replace front door lock assembly (driver side).
NG >> Replace Intelligent Key unit. 28 (W/B) – 4 (W) : Continuity should exist.
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5 (B) – Ground : Continuity should exist.
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28 (W/B) – Ground : Approx. 5V
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INTELLIGENT KEY SYSTEM BL-133
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Revision: 2006 July 2007 FX35/FX45
Check Door Request SwitchNIS001NS
1. CHECK DOOR REQUEST SWITCH
With CONSULT-II
Display “DR REQ SW” (driver door), “AS REQ SW” (passenger
door) and “BD/TR REQ SW” (back door) on DATA MONITOR
screen, and check if ON-OFF display is linked to door request switch
operation.
OK or NG
OK >> Door request switch is OK.
NG >> GO TO 2.
2. CHECK DOOR REQUEST SWITCH SIGNAL
1. Turn ignition knob LOCK position.
2. Disconnect door request switch connector.
3. Check voltage between door request switch connector D12 (driver door), D42 (passenger door), D113 (back door) terminal 1 and ground.
OK or NG
OK >> GO TO 3.
NG >> GO TO 5.
3. CHECK DOOR REQUEST SWITCH OPERATION
Check continuity between door request switch D12 (driver door), D42 (passenger door), D113 (back door) ter-
minals 1 and 2.
OK or NG
OK >> GO TO 4.
NG >> Replace door request switch. Press door request switch. : ON
Release door request switch. : OFF
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Driver 1 (SB) - Ground : Approx. 5V
Passenger 1 (GY) - Ground : Approx. 5V
Back door 1 (GY) - Ground : Approx. 5V
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Terminal Condition Continuity
12 Press door request switch Yes
Return door request switch No
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BL-134
INTELLIGENT KEY SYSTEM
Revision: 2006 July 2007 FX35/FX45
4. CHECK DOOR REQUEST SWITCH GROUND CIRCUIT
Check continuity between door request switch connector D12 (driver side), D42 (passenger side), D113 (back
door) terminal 2 (B) and ground.
OK or NG
OK >> Check harness connection.
NG >> Repair or replace door request switch ground circuit.
5. CHECK DOOR REQUEST SWITCH CIRCUIT
1. Disconnect Intelligent Key unit connector.
2. Check continuity between Intelligent Key unit connector M34 terminals 5 (driver door), 25 (passenger door), and 29 (back door) and door request switch connector D12 (driver door), D42 (passenger door),
D113 (back door) terminal 1.
3. Check continuity between door request switch connector D12 (driver door), D42 (passenger door), D113 (back door) terminal
1 and ground.
OK or NG
OK >> Replace Intelligent Key unit.
NG >> Repair or replace harness between Intelligent Key unit and door request switch.
Check Intelligent Key Warning BuzzerNIS001NT
1. CHECK INTELLIGENT KEY WARNING BUZZER POWER SUPPLY CIRCUIT
1. Turn ignition knob LOCK position.
2. Disconnect Intelligent Key warning buzzer connector.
3. Check voltage between Intelligent Key warning buzzer connector D11 (driver side), D41 (passenger side) terminal 1 (L) and ground.
OK or NG
OK >> GO TO 2.
NG >> Repair or replace Intelligent Key warning buzzer power
supply circuit.
2 (B) - Ground : Continuity should exist.
PIIA6746E
Driver 5 (W/L) - 1 (SB) : Continuity should exist.
Passenger 25 (W/R) - 1 (GY) : Continuity should exist.
Back door 29 (GY) - 1 (GY) : Continuity should exist.
1 - Ground : Continuity should not exist.
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1 (L) - Ground : Battery voltage
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INTELLIGENT KEY SYSTEM BL-135
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Revision: 2006 July 2007 FX35/FX45
2. CHECK INTELLIGENT KEY WARNING BUZZER CIRCUIT
1. Disconnect Intelligent Key unit connector.
2. Check continuity between Intelligent Key unit connector M34 terminal 4 and Intelligent Key warning buzzer connector D11 (driver side), D41 (passenger side) terminal 2 (G).
3. Check continuity between Intelligent Key warning buzzer con- nector D11 (driver side), D41 (passenger side) terminal 2 (G)
and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness between Intelligent Key warn-
ing buzzer and Intelligent Key unit.
3. CHECK INTELLIGENT KEY WARNING BUZZER OPERATION
Connect battery power supply to Intelligent Key warning buzzer connector D11 (driver side), D41 (passenger
side) terminals 1 and 2, and check the operation.
OK or NG
OK >> Intelligent Key warning buzzer is OK.
NG >> Replace Intelligent Key warning buzzer
Check Outside Key AntennaNIS001NU
1. CHECK OUTSIDE KEY ANTENNA POWER SUPPLY
Push each door request switch, and use an oscilloscope to check voltage waveform of harness between Intel-
ligent Key unit connector M34 terminals 17 (back door), 19 (driver and rear LH door), and 37 (passenger and
rear RH door) and ground.
OK or NG
OK >> GO TO 2.
NG >> GO TO 3. 4 (LG) - 2 (G) : Continuity should exist.
2 (G) - Ground : Continuity should not exist.
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1 (BAT+) - 2 (BAT-) : the buzzer sounds
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Terminal (Wire color) Condition Signal
(Reference value)
(+) (-)
Back door:
17 (L)
Ground Push each
door request
switch
Driver, rear LH:
19 (SB)
Passenger,
rear RH
37 (G)
MIIB0375ESIIA1910J

BL-136
INTELLIGENT KEY SYSTEM
Revision: 2006 July 2007 FX35/FX45
2. CHECK OUTSIDE KEY ANTENNA OPERATION
1. Disconnect each outside key antenna connector.
2. Check the following.
–Check continuity between door mirror (outside key antenna) connector D2 (driver side), D32 (passenger
side) terminals 14 and 15
–Check continuity between outside key antenna D62 (rear door LH), D82 (rear door RH), D116 (back door)
terminals 1 and 2
OK or NG
OK >> GO TO 3.
NG >> Replace outside key antenna. Driver side, Passenger side
14 - 15 : Continuity should exist.
Back door, Rear door
1 - 2 : Continuity should exist.
PIIB8507E

INTELLIGENT KEY SYSTEM BL-137
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Revision: 2006 July 2007 FX35/FX45
3. CHECK OUTSIDE KEY ANTENNA CIRCUIT
1. Disconnect Intelligent Key unit connector.
2. Check continuity between each outside key antenna connector D2 (driver side), D32 (passenger side), D62 (rear door LH), D82 (rear door RH), D116 (back door) terminals 1, 2, 14, 15 and Intelligent Key unit
connector M34 terminals 17, 18, 19, 20, 37, and 38.
3. Check continuity between each out side key antenna connector terminals 1, 2, 6, 7 and ground.
OK or NG
OK >> Replace Intelligent Key unit.
NG >> Replace harness between outside key antenna and Intelligent Key unit.
Item Te r m i n a l
(Wire color) Continuity
Back door 1 (L/B) 17 (L)
Ye s
2 (W/B) 18 (W/L)
Driver side 14 (BR/W) 19 (SB)
15 (R/Y) 20 (GY)
Passenger side 14 (G/Y) 37 (G)
15 (L/Y) 38 (G/W)
Rear door LH 1 (G/Y) 19 (SB)
2 (PU/W) 20 (GY)
Rear door RH 1 (G/Y) 37 (G)
2 (PU/W) 38 (G/W)
Item Terminal
(Wire color) Continuity
Back door 1 (L/B)
Ground No
2 (W/B)
Rear door
(LH, RH) 1 (G/Y)
2 (PU/W)
Driver side 14 (BR/W)
15 (R/Y)
Passenger side 14 (G/Y)
15 (L/Y)
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BL-138
INTELLIGENT KEY SYSTEM
Revision: 2006 July 2007 FX35/FX45
Check Inside Key AntennaNIS001NV
1. CHECK INSIDE KEY ANTENNA POWER SUPPLY CIRCUIT
Push ignition knob and use an oscilloscope to check voltage waveform between Intelligent Key unit connector
M34 terminals 13 (luggage room), 15 (dash board), 35 (dash board) and ground.
OK or NG
OK >> GO TO 2.
NG >> GO TO 3.
2. CHECK INSIDE KEY ANTENNA OPERATION
1. Disconnect inside key antenna connector.
2. Check continuity between inside key antenna connector M70, M153 (dash board), B68 (luggage room) terminals 1 and 2.
OK or NG
OK >> GO TO 3.
NG >> Replace malfunctioning inside key antenna.
Terminal (Wire color) Condition Signal
(Reference value)
(+) (-)
Luggage room:
13 (P)
Ground Push igni-
tion knob.
Dash board:
15 (G)
35 (LG)
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1 - 2 : Continuity should exist.
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