ground INFINITI FX35 2004 Service Manual

BL-128
INTELLIGENT KEY SYSTEM
Revision: 2004 November 2004 FX35/FX45
4. IGNITION KNOB SWITCH CIRCUIT INSPECTION
1. Disconnect Intelligent Key unit connector.
2. Check continuity between Intelligent Key unit connector M34 terminal 27 (L/W) and key switch and igni-
tion knob switch connector M22 terminal 2 (L/W).
3. Check continuity between key switch and ignition knob switch
connector terminal 2 (L/W) and ground.
OK or NG
OK >> Replace Intelligent Key unit.
NG >> Repair or replace harness between Intelligent Key unit
and key switch and ignition knob switch.
Check Door SwitchAIS004NF
CHECK DOOR SWITCH (EXCEPT BACK DOOR SWITCH)
1. DOOR SWITCH INPUT SIGNAL INSPECTION
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 2.27 (L/W) - 2 (L/W) : Continuity should exist.
2 (L/W) - Ground : Continuity should not exist.
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Item ConnectorTerminals
(Wire color)Door
conditionVoltage (V)
(Approx.)
(+) (-)
Driver side
B1462 (W)
GroundCLOSE
↓
OPENBattery voltage
↓
0 Rear LH 63 (P)
Passenger side
M312 (P/B)
Rear RH 13 (P/L)
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INTELLIGENT KEY SYSTEM
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Revision: 2004 November 2004 FX35/FX45
2. DOOR SWITCH CIRCUIT INSPECTION
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.
3. DOOR SWITCH INSPECTION
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.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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Terminal Door switch condition Continuity
1 Ground part of door switchPushed No
Released Yes
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ConnectorTerminals (Wire color)
ConditionVoltage (V)
(Approx.)
(+) (–)
B14 58 (L) GroundOPEN 0
CLOSE 9
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BL-130
INTELLIGENT KEY SYSTEM
Revision: 2004 November 2004 FX35/FX45
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.
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.58 (L) – 7 (L) : Continuity should exist.
58 (L) – Ground : Continuity should not exist.
PIIA6226E
8 (B) – Ground : Continuity should exist.
PIIA6170E
Terminals Back door condition Continuity
78Open Yes
Close No
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INTELLIGENT KEY SYSTEM
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Revision: 2004 November 2004 FX35/FX45
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 SensorAIS004NG
1. UNLOCK SENSOR POWER SUPPLY INSPECTION
Check voltage between Intelligent Key unit connector and ground.
OK or NG
OK >> Unlock sensor is OK.
NG >> GO TO 2.
2. UNLOCK SENSOR CIRCUIT INSPECTION
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). 58 (L) – Ground : Approx. 9V
PIIA6229E
ConnectorTerminals (Wire color)
ConditionVoltage (V)
(Approx.)
(+) (-)
M34 28 (W/B) GroundDriver side door lock is
locked5
Driver side door lock is
unlocked0
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28 (W/B) – 4 (W) : Continuity should exist.
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BL-132
INTELLIGENT KEY SYSTEM
Revision: 2004 November 2004 FX35/FX45
3. UNLOCK SENSOR GROUND CIRCUIT INSPECTION
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. INTELLIGENT KEY UNIT OUTPUT SIGNAL INSPECTION
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.
Check Door Request SwitchAIS004NH
1. DOOR REQUEST SWITCH INSPECTION
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 2.5 (B) – Ground : Continuity should exist.
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28 (W/B) – Ground : Approx. 5V
PIIA6802E
Press door request switch. : ON
Release door request switch. : OFF

INTELLIGENT KEY SYSTEM
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Revision: 2004 November 2004 FX35/FX45
2. DOOR REQUEST SWITCH SIGNAL INSPECTION
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. DOOR REQUEST SWITCH OPERATION INSPECTION
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.
4. DOOR REQUEST SWITCH GROUND CIRCUIT INSPECTION
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.Driver 1 (SB) - Ground : Approx. 5V
Passenger 1 (GY) - Ground : Approx. 5V
Back door 1 (GY) - Ground : Approx. 5V
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Press door request
switch.: Continuity should exist.
Return door request
switch.: Continuity should not exist.
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2 (B) - Ground : Continuity should exist.
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BL-134
INTELLIGENT KEY SYSTEM
Revision: 2004 November 2004 FX35/FX45
5. DOOR REQUEST SWITCH CIRCUIT INSPECTION
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 BuzzerAIS004NI
1. INTELLIGENT KEY WARNING BUZZER POWER SUPPLY CIRCUIT INSPECTION
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. INTELLIGENT KEY WARNING BUZZER CIRCUIT INSPECTION
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. 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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4 (LG) - 2 (G) : Continuity should exist.
2 (G) - Ground : Continuity should not exist.
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INTELLIGENT KEY SYSTEM
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Revision: 2004 November 2004 FX35/FX45
3. INTELLIGENT KEY WARNING BUZZER OPERATION INSPECTION
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 AntennaAIS004NJ
1. OUTSIDE KEY ANTENNA POWER SUPPLY INSPECTION
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 3.1 (BAT+) - 2 (BAT-) : the buzzer sounds
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Terminal (Wire color)
ConditionSignal
(Reference value)
(+) (-)
Back door:
17 (OR/L)
GroundPush each
door request
switch Driver, rear LH:
19 (SB)
Passenger,
rear RH
37 (G)
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INTELLIGENT KEY SYSTEM
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Revision: 2004 November 2004 FX35/FX45
3. OUTSIDE KEY ANTENNA CIRCUIT INSPECTION
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, 6, 7 and Intelligent Key unit con-
nector 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. Back door1 (L/B) - 17 (OR/L): Continuity should exist.
2 (W/B) - 18 (PU/R): Continuity should exist.
Driver side7 (BR/W) - 19 (SB): Continuity should exist.
6 (R/Y) - 20 (R/G): Continuity should exist.
Passenger side7 (G/Y) - 37 (G): Continuity should exist.
6 (L/Y) - 38 (PU/W): Continuity should exist.
Rear door LH1 (G/Y) - 19 (SB): Continuity should exist.
2 (PU/W) - 20 (R/G): Continuity should exist.
Rear door RH1 (G/Y) - 37 (G): Continuity should exist.
2 (PU/W) - 38 (PU/W): Continuity should exist.
Back door1 (L/B) - Ground: Continuity should not exist.
2 (W/B) - Ground: Continuity should not exist.
Rear door
(LH, RH)1 (G/Y) - Ground: Continuity should not exist.
2 (PU/W) - Ground: Continuity should not exist.
Driver side7 (BR/W) - Ground: Continuity should not exist.
6 (R/Y) - Ground: Continuity should not exist.
Passenger
side7 (G/Y) - Ground: Continuity should not exist.
6 (L/Y) - Ground: Continuity should not exist.
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BL-138
INTELLIGENT KEY SYSTEM
Revision: 2004 November 2004 FX35/FX45
Check Inside Key AntennaAIS004NK
1. INSIDE KEY ANTENNA POWER SUPPLY CIRCUIT INSPECTION
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. INSIDE KEY ANTENNA OPERATION INSPECTION
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)
ConditionSignal
(Reference value)
(+) (-)
Luggage room:
13 (Y)
GroundPush igni-
tion knob. Dash board:
15 (W/R)
35 (LG)
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1 - 2 : Continuity should exist.
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