2008 INFINITI FX35 ignition switch

INTELLIGENT KEY SYSTEMBL-109
< SERVICE INFORMATION >
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Mechanical Key Operation Inspection
WARNING CHIME FUNCTION MALFUNCTION
Before conducting the diagnosis in the following table, c
heck “key reminder function” with power door lock sys-
tem.
Symptom Diagnoses service procedure Refer to page
Ignition knob can not turn
KEY warning lamp on combination meter
lights up in red when ignition knob is
pressed. (door lock functions normal) 1. Intelligent Key battery inspection
BL-130
2. Check inside key antennaBL-123
3. Replace Intelligent Key unitBL-130
KEY warning lamp on combination meter
lights up in green when ignition knob is
pressed.1. Check ignition knob switch
BL-1142. Check steering lock unitBL-124
3. Check Intelligent Key unit power supply and ground circuit B L - 111
4. Replace Intelligent Key unitBL-130
Ignition knob turns even without both Intelli-
gent Key and mechanical key.Replace steering lock unit —
Security indicator will still flash when ignition
knob is pressed. 1. Check key switch (Intelligent Key unit input)
BL-112
2. Replace Intelligent Key unitBL-130
Security indicator does not flash with ignition
knob released at LOCK position. (push
switch OFF)1. CAN communication system
BCS-13
2. Ignition knob switch system BL-114
3. Intelligent Key unit power supply and ground circuit B L - 111
Starter motor does not cranking.
(Ignition knob can turn)1. Check detention switch
BL-1262. Check stop lamp switchBL-126
3. Replace Intelligent Key unitBL-130
Symptom Diagnoses service procedure Refer to page
Ignition knob can not turn
Security indicator remains flashing with me-
chanical key inserted.1. Check key switch (BCM input)
BL-113
2. Replace Intelligent Key unitBL-130
KEY indicator and security indicator does
not flashing with mechanical key inserted. 1. Check stop lamp switch
BL-126
2. Replace Intelligent Key unitBL-130
Starter motor does not cranking.
(Ignition knob can turn)1. Check detention switch
BL-1262. Check stop lamp switchBL-126
3. Replace Intelligent Key unitBL-130
Symptom Diagnoses service procedure Refer to page
Ignition key warning chime is inoperative.
(When mechanical key used) 1. Check CAN communication
BCS-13
2. Check key switch (Intelligent Key unit input) BL-112
3. Check door switchBL-115
4. Inspect combination meter (warning) DI-5
5. Replace Intelligent Key unitBL-130
Ignition knob OFF position warning chime
(for inside vehicle) does not sound.
(Ignition key warning chime operates)1. Check CAN communication
BCS-132. Check ignition knob switch BL-114
3. Check key switch (Intelligent Key unit input)BL-112
4. Replace Intelligent Key unitBL-130
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BL-110
< SERVICE INFORMATION >
INTELLIGENT KEY SYSTEM
Ignition knob OFF position warning chime
(for outside vehicle: after door open/
closed) does not sound.1. Check CAN communication
BCS-132. Check ignition knob switch BL-114
3. Check door switchBL-115
4. Check Intelligent Key warning buzzerBL-120
5. Replace Intelligent Key unitBL-130
Intelligent Key take out warning chime
(when door open/closed) does not sound.1. Check CAN communication
BCS-13
2. Intelligent Key battery inspection BL-130
3. Check ignition knob switch BL-114
4. Check door switchBL-115
5. Check Intelligent Key warning buzzerBL-120
6. Replace Intelligent Key unitBL-130
Intelligent Key take out warning chime
(when door opened/closed) sounds even
though Intelligent Key is in vehicle.1. Check inside key antenna
BL-123
2. Intelligent Key battery inspectionBL-130
3. Replace Intelligent Key unitBL-130
P position selecting warning lamp does
not light up1. Check detention switch
BL-1262. Check combination meter DI-5
3. Replace Intelligent Key unitBL-130
Intelligent Key take out warning chime
(when selector lever is except P position)
does not sound.1. Check CAN communication
BCS-13
2. Check detention switch BL-126
3. Replace Intelligent Key unitBL-130
Intelligent Key take out warning chime
(through window) does not sound 1.
Check if Intelligent Key removal warning (take out from
window) was canceled by CONSULT-III settings change
function BL-1042. Check CAN communication
BCS-13
3. Intelligent Key battery inspection BL-130
4. Check ignition knob switch BL-114
5. Replace Intelligent Key unitBL-130
Intelligent Key take out warning chime
(through window) sounds even though In-
telligent Key is in vehicle.1. Check inside key antenna
BL-123
2. Intelligent Key battery inspectionBL-130
3. Replace Intelligent Key unitBL-130
Symptom Diagnoses service procedure Refer to page
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INTELLIGENT KEY SYSTEMBL-111
< SERVICE INFORMATION >
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Check CAN Comm unication System InspectionINFOID:0000000001534751
1.PERFORM SELF DIAGNOSTIC
1. Turn ignition switch ON and wait for 2 seconds or more.
2. Check “Self Diagnostic Result” of BCM.
Is
“CAN COMM CIRCUIT” displayed?
YES >> Refer to BCS-13, "U1000 CAN Communication Circuit".
NO >> INSPECTION END.
Check Intelligent Key Unit Power Supply and Ground CircuitINFOID:0000000001327853
1.CHECK POWER SUPPLY CIRCUIT
1. Turn ignition knob OFF position.
2. Disconnect Intelligent Key unit connector.
3. Check voltage between Intelligent Key unit connector and ground.
OK or NG
Door lock non-operation warning does not
sound. Intelligent Key warning chime does not sound
1. Intelligent Key battery inspection BL-130
2. Check door request switch BL-119
3. Check inside key antennaBL-123
4. Check Intelligent Key warning buzzerBL-120
5. Replace Intelligent Key unitBL-130
Ignition knob OFF position warning chime does not sound
1. Intelligent Key battery inspection BL-130
2. Check door request switch BL-119
3. Check outside key antennaBL-121
4. Check Intelligent Key warning buzzerBL-120
5. Check ignition knob switch BL-114
6. Replace Intelligent Key unitBL-130
Door ajar alarm
1. Check CAN communications BCS-13
2. Check door request switch BL-119
3. Check outside key antennaBL-121
4. Check Intelligent Key warning buzzerBL-120
5. Check door switch BL-115
6. Intelligent Key battery inspectionBL-130
7. Replace Intelligent Key unitBL-130
Symptom Diagnoses service procedure Refer to page
ConnectorTe r m i n a l
(Wire color) Ignition knob position
M34 (+) (–) OFF ACC ON
6
(W)
Ground 0V 0V Battery voltage
10
(LG) 0V Battery voltage Battery voltage
11
(L/R) Battery voltage Battery voltage Battery voltage
MIIB0360E
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BL-112
< SERVICE INFORMATION >
INTELLIGENT KEY SYSTEM
OK >> GO TO 2.
NG >> Repair or replace Intelligent Key power supply circuit.
2.CHECK GROUND CIRCUIT
Check continuity between Intelligent Key unit connector M34 termi-
nal 12 (B) and ground.
OK or NG
OK >> Power supply and ground circuits are normal.
NG >> Repair or replace the Intelligent Key unit ground circuit.
Check Key Switch (Intel ligent Key Unit Input)INFOID:0000000001327854
1.CHECK KEY SWITCH
With CONSULT-III
Display “KEY SW” on DATA MONITOR screen, and check if ON-OFF display is linked to insertion of mechan-
ical key in ignition knob.
OK or NG
OK >> Key switch is OK.
NG >> GO TO 2.
2.CHECK KEY SWITCH PO WER SUPPLY CIRCUIT
1. Remove mechanical key from ignition knob.
2. Disconnect key switch and ignition knob switch connector.
3. Check voltage between key switch and ignition knob switch connector M22 terminal 3 (L/R) and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace key switch power supply circuit.
3.CHECK KEY SWITCH OPERATION
Check continuity between key switch and ignition knob switch terminals 3 and 4.
OK or NG
OK >> GO TO 4.
NG >> Replace key switch. 12 (B) - Ground : Continuity should exist.
MIIB0361E
When key is inserted in ignition knob : ON
When key is removed in ignition knob : OFF
3 (L/R) - Ground : Battery voltage
PIIA6738E
Terminals Condition Continuity
34 Key is inserted in ignition key cylinder. Yes
Key is removed from ignition key cylinder. No
PIIA6140E
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INTELLIGENT KEY SYSTEMBL-113
< SERVICE INFORMATION >
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4.CHECK KEY SWITCH CIRCUIT
1. Disconnect Intelligent Key unit connector.
2. Check continuity between Intelligent Key unit connecto r M34 terminal 7 (B/W) and key switch and ignition
knob switch connector M22 terminal 4 (B/W).
3. Check continuity between key switch and ignition knob switch connector M22 terminal 4 (B/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 Key Switch (BCM Input)INFOID:0000000001327855
1.CHECK KEY SWITCH POWER SUPPLY CIRCUIT
1. Turn ignition knob OFF position.
2. Disconnect key switch and i gnition knob switch connector.
3. Check voltage between key switch and ignition knob switch con-
nector M22 terminal 3 (L/R) and ground.
OK or NG
OK >> GO TO 2.
NG >> Check harness between key switch and ignition knob switch and fuse.
2.CHECK KEY SWITCH
Check continuity between key switch and ignition knob switch as fol-
lows.
OK or NG
OK >> GO TO 3.
NG >> Replace key switch and ignition knob switch.
3.CHECK KEY SWITCH SIGNAL CIRCUIT 7 (B/W) - 4 (B/W) : Continuity should exist.
4 (B/W) - Ground : Continuity should not exist.
PIIA6740E
3 (L/R) – Ground : Battery voltage.
PIIA5093E
Terminals Condition Continuity
34 Key is inserted in ignition key cylinder. Yes
Key is removed from ignition key cylinder. No
PIIA6140E
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BL-114
< SERVICE INFORMATION >
INTELLIGENT KEY SYSTEM
1. Disconnect key switch and ignition knob switch connector andBCM connector.
2. Check continuity between key switch and ignition knob switch
connector M22 terminal 4 (B/W) and BCM connector M3 termi-
nal 37 (B/W).
3. Check continuity between key switch and ignition knob switch connector M22 terminal 4 (B/W) and ground.
OK or NG
OK >> Key switch (BCM input) circuit is OK.
NG >> Repair or replace harness between key switch and ignition knob switch and BCM.
Check Ignition Knob SwitchINFOID:0000000001327856
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 knob oper-
ation.
OK or NG
OK >> Ignition knob switch is OK.
NG >> GO TO 2.
2.CHECK IGNITION KNOB SWITCH POWER SUPPLY CIRCUIT
1. Turn ignition knob LOCK position.
2. Disconnect key switch and ignition knob switch connector.
3. Check voltage between key switch and ignition knob switch connector M22 terminal 1 (L/R) and ground.
OK or NG
OK >> GO TO 3.
NG >> 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. 4 (B/W) – 37 (B/W) : Cont
inuity should exist.
4 (B/W) – Ground : Conti nuity should not exist.
PIIA5095E
Press ignition knob. : ON
Return ignition knob (release hands
from ignition knob) : OFF
1 (L/R) - Ground : Battery voltage
PIIA6741E
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INTELLIGENT KEY SYSTEMBL-115
< SERVICE INFORMATION >
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OK or NG
OK >> GO TO 4.
NG >> Replace key switch and ignition knob switch.
4.CHECK IGNITION KN OB SWITCH CIRCUIT
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 SwitchINFOID:0000000001327857
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
Connector Terminal Condition Continuity
M22 1 2 Press ignition knob Yes
Return ignition knob (Re-
lease hands from ignition
knob)
No
PIIA9929E
27 (L/W) - 2 (L/W) : Cont
inuity should exist.
2 (L/W) - Ground : Contin uity should not exist.
PIIA6743E
Item ConnectorTe r m i n a l s
(Wire color) Door
condition Voltage (V)
(Approx.)
(+) (-)
Driver side B1462 (W)
Ground CLOSE
↓
OPEN Battery voltage
↓0
Rear LH 63 (P)
Passenger side M312 (P/B)
Rear RH 13 (P/L)
PIIA7003E
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BL-116
< SERVICE INFORMATION >
INTELLIGENT KEY SYSTEM
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.CHECK DOOR SWITCH
Check continuity between door switch te rminal 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. Driver side door
1 (W) –62 (W) : Conti
nuity should exist.
Passenger side door
1 (SB) – 12 (P/B) : Cont inuity should exist.
Rear door LH
1 (P) – 63 (P) : Conti nuity should exist.
Rear door RH
1 (P) – 13 (P/L) : Cont inuity should exist.
1 (W, SB, P) – Ground : Continuity should not exist.
PIIA7004E
Terminal Door switch condition Continuity
1 Ground part of door switch Pushed No
Released Yes
PIIA3351E
Connector Terminals (Wire color)
ConditionVoltage (V)
(Approx.)
(+) (–)
B14 58 (L) Ground OPEN 0
CLOSE 9
PIIA6229E
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