ground INFINITI FX35 2004 Service Manual

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REMOTE KEYLESS ENTRY SYSTEM
Revision: 2004 November 2004 FX35/FX45
Check IPDM E/R OperationAIS004MO
1. CHECK IPDM E/R INPUT VOLTAGE
Check voltage between IPDM E/R connector E9 terminal 51 and
ground.
OK or NG
OK >> Replace IPDM E/R.
NG >> GO TO 2.
2. CHECK IPDM E/R HARNESS
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R and horn relay connector.
3. Check continuity between IPDM E/R connector E9 terminal 51
and horn relay connector E10 terminal 1.
OK or NG
OK >> Check harness connection.
NG >> Repair or replace harness.51 (SB) – Ground : Battery voltage
PIIA6403E
51 (SB) – 1 (SB) : Continuity should exist.
PIIA6404E

BL-110
INTELLIGENT KEY SYSTEM
Revision: 2004 November 2004 FX35/FX45
26 P/L Stop lamp switch —Brake pedal depressed (ON) 5
Brake pedal not depressed (OFF) 0
27 L/W Ignition knob switch —Press ignition knob. 12
Return ignition knob to LOCK position. 0
28 W/B Door unlock sensor — Door is locking → unlock 5 → 0
29 GYDoor request switch
(back door)—Back door request switch operation:
Press (ON)0
Other than the above (OFF) 5
31 Y/B Steering lock unit ground — — 0
32 R/BSteering lock unit com-
municationLOCKPress ignition knob with Intelligent Key
inside vehicle.
Other than the above 5
35 LGInside key antenna (+)
signal
(Dashboard)
LOCKAny door open → Close (Door switch:
ON → OFF)
Ignition knob switch: ON (press ignition
knob.)
36 PUInside key antenna (-)
signal
(Dashboard)
37 G Outside antenna RH (+)
LOCKPassenger door request switch opera-
tion (Switch: ON)
38PU/
WOutside antenna RH (-)
39 R/Y Detention switch LOCKA/T selector lever in “P” position. 0
A/T selector lever in other position. Battery voltage
40BR/
WDoor lock relay LOCKDoor request switch (passenger side)
pressedBattery voltage → 0 → Battery
voltage Te r -
minal
No.Wire
colorItemMeasuring condition
Standard (V)
Approx. Ignition knob
positionOperation or conditions
SIIA1911J
SIIA1910J
SIIA1910J

INTELLIGENT KEY SYSTEM
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Revision: 2004 November 2004 FX35/FX45
Terminals and Reference Value for Steering Lock unitAIS004N1
Terminals and Reference Value for BCMAIS004N2
Terminal
numberWire
colorSignal DesignationMeasuring condition
Standard (V)
Ignition knob
positionOperation or conditions
1 L/R Battery power supply LOCK — Approx. 12
2R/WSteering lock unit
power supplyLOCK — Approx. 5
3R/BSteering lock unit com-
munication signalLOCKPress ignition knob with Intelligent
Key inside vehicle.
Other than the above Approx. 5
4Y/BSteering lock unit
ground—— Approx. 0
SIIA1911J
TERMI-
NALWIRE
COLORITEM CONDITIONVOLTAGE (V)
Approx.
1PUKey ring illumination output sig-
nal Key ring illumination is lighting. Battery voltage
Key ring illumination is being turned off. 0
12 P/BFront door switch (Passenger
side)Door open (ON) → Close (OFF) 0 → Battery voltage
13 P/L Rear door switch RH Door open (ON) → Close (OFF) 0 → Battery voltage
37 B/W Key switchInsert mechanical key from ignition key
sylinder.Battery voltage
Remove mechanical key from ignition
key cylinder.0
38 W/L Ignition switchIgnition switch is in ON or START posi-
tionBattery voltage
39 L CAN-H — —
40 R CAN-L — —
41 R/B Battery saver output signal30 minutes after ignition switch is turned
to OFF0
Ignition switch is in ON position Battery voltage
42 L/R Battery power supply (fuse) — Battery voltage
44 YDriver door lock actuator
(Unlock)Door lock / unlock switch
(Free → Unlock)0 → Battery voltage
45 G/W Left turn signal lampWhen door lock or unlock is operated
using Intelligent Key.*
1
(ON → OFF)Battery voltage → 0
46 BR/W Right turn signal lampWhen door lock or unlock is operated
using Intelligent Key.*
1
(ON → OFF)Battery voltage → 0
47 Y/R Step lamp output signalStep lamp is lighting. 0
Step lamp is being turned off. Battery voltage
48 PU/W Room lamp output signalRoom lamp is lighting.*
20
Room lamp is being turned off.*
2Battery voltage
49 B Ground — 0

BL-112
INTELLIGENT KEY SYSTEM
Revision: 2004 November 2004 FX35/FX45
*1: In the state that hazard reminder operates.
*2: In the state that room lamp switch is in “DOOR” position.
Terminals and Reference Value for IPDM E/RAIS004N3
50 PU Door lock actuator (Lock)Door lock / unlock switch
(Free → Lock)0 → Battery voltage
51 W/BPassenger and rear doors lock
actuator (Unlock)Door lock / unlock switch
(Free → Unlock)0 → Battery voltage
52 B Ground — 0
54 WBattery power supply
(power window)—Battery voltage
55 GBattery power supply (Fusible
link)—Battery voltage
58 L Back door switch Back door open (ON) → Close (OFF) 0 → 9
62 W Front door switch (Driver side) Door open (ON) → Close (OFF) 0 → Battery voltage
63 P Rear door switch LH Door open (ON) → Close (OFF) 0 → Battery voltage TERMI-
NALWIRE
COLORITEM CONDITIONVOLTAGE (V)
Approx.
TERMINAL WIRE
COLORITEM CONDITIONVOLTAGE (V)
Approx.
38 B Ground — 0
48 L CAN – H — —
49 R CAN – L — —
51 SB Horn relayWhen panic alarm is operated using
Intelligent Key (OFF → ON)Battery voltage → 0
60 B Ground — 0

BL-118
INTELLIGENT KEY SYSTEM
Revision: 2004 November 2004 FX35/FX45
Trouble Diagnosis Symptom ChartAIS004N9
ALL FUNCTIONS OF THE INTELLIGENT KEY ARE NOT OPERATING
REMOTE CONTROL ENTRY FUNCTION MALFUNCTION
Symptom Diagnoses service procedure Refer to page
“KEY” and “P shift” warning lamps in combination
meter do not light up at all.1.Check Intelligent Key unit power supply and ground
circuitBL-124
2. Check CAN communicationBL-123
3. Replace Intelligent Key unitBL-146
“KEY” and “P shift” warning lamps in combination
meter turn on, but doors cannot be locked/
unlocked or the engine can not be started using
Intelligent Key.1.Use CONSULT-II to check if the Intelligent Key has
been registeredRefer to
CONSULT-II
Operation
Manual
2.Use CONSULT-II setting change function to check if
Intelligent Key system has been cancelledBL-115
3. Intelligent Key inspectionBL-147
4. Replace Intelligent Key unitBL-146
Symptom Diagnoses service procedure Refer to page
Door lock/unlock does not operate (other func-
tions normal) when Intelligent Key remote con-
troller button is operated.1. Check door lock/unlock settingBL-115
2. Intelligent Key inspectionBL-147
3. Check door unlock sensorBL-131
4. Check door switchBL-128
5. Replace BCMBCS-15
6. Replace Intelligent Key unitBL-146
Driver side selective door unlock function does
not operate, when Intelligent Key remote control-
ler button is operated.
(All other remote control entry function is OK.)1. Check selective door unlock settingBL-115
2. Replace BCMBCS-15
3. Replace Intelligent Key unitBL-146
Panic alarm (horn and headlamp) do not acti-
vate, when panic alarm button is continuously
pressed.
(All other remote control entry function is OK.)1. Check panic alarm modeBL-115
2. Check headlamp functionBL-145
3. Check horn functionBL-145
4. Check IPDM E/R operationBL-145
5. Check key switch (Intelligent Key unit input)BL-124
6. Check ignition knob switchBL-127
7. Replace Intelligent Key unitBL-146
Hazard lamps do not flash during door lock oper-
ation using Intelligent Key remote controller but-
ton operated.
(Turn signal lamp operation is OK.)
(All other remote control entry function is OK.)1. Check key reminder settingBL-115
2. Replace BCMBCS-15
3. Replace Intelligent Key unitBL-146
Hazard lamps do not flash during door lock oper-
ation using Intelligent Key remote controller but-
ton operated.
(Turn signal lamps do not operate.)Check hazard functionBL-145
Intelligent Key warning buzzer does not sound
during door lock/unlock operation using Intelli-
gent Key remote controller button is operated.
(All other remote control entry function is OK.)1.Check if the operation confirmation Intelligent Key
warning buzzer was cancelled by the CONSULT-II set-
tings change functionBL-115
2. Check Intelligent Key warning buzzerBL-134
3. Replace Intelligent Key unitBL-146

BL-120
INTELLIGENT KEY SYSTEM
Revision: 2004 November 2004 FX35/FX45
ENGINE START FUNCTION MALFUNCTION
Intelligent Key Operation Inspection
Mechanical Key Operation Inspection
WARNING CHIME FUNCTION MALFUNCTION
Before conducting the diagnosis in the following table, check “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 inspectionBL-147
2. Check inside key antennaBL-138
3. Replace Intelligent Key unitBL-146
KEY warning lamp on combination meter
lights up in green when ignition knob is
pressed.1. Check ignition knob switchBL-1272. Check steering lock unitBL-139
3. Check Intelligent Key unit power supply and ground circuitBL-124
4. Replace Intelligent Key unitBL-146
Ignition knob turns even without both Intelli-
gent Key and mechanical key.Replace steering lock unit —
Security indicator will still flash when igni-
tion knob is pressed.1. Check key switch (Intelligent Key unit input)BL-124
2. Replace Intelligent Key unitBL-146
Security indicator does not flash with igni-
tion knob released at LOCK position. (push
switch OFF)1. CAN communication systemBL-123
2. Ignition knob switch systemBL-127
3. Intelligent Key unit power supply and ground circuitBL-124
Starter motor does not cranking.
(Ignition knob can turn)1. Check detention switchBL-1422. Check stop lamp switchBL-141
3. Replace Intelligent Key unitBL-146
Symptom Diagnoses service procedure Refer to page
Ignition knob can not turn
Security indicator remains flashing with
mechanical key inserted.1. Check key switch (BCM input)BL-126
2. Replace Intelligent Key unitBL-146
KEY indicator and security indicator does
not flashing with mechanical key inserted.1. Check stop lamp switchBL-141
2. Replace Intelligent Key unitBL-146
Starter motor does not cranking.
(Ignition knob can turn)1. Check detention switchBL-1422. Check stop lamp switchBL-141
3. Replace Intelligent Key unitBL-146
Symptom Diagnoses service procedure Refer to page
Ignition key warning chime is inoperative.
(When mechanical key used)1. Check CAN communicationBL-123
2. Check key switch (Intelligent Key unit input)BL-124
3. Check door switchBL-128
4. Inspect combination meter (warning)DI-4
5. Replace Intelligent Key unitBL-146
Ignition knob OFF position warning
chime (for inside vehicle) does not
sound.
(Ignition key warning chime operates)1. Check CAN communicationBL-1232. Check ignition knob switchBL-127
3. Check key switch (Intelligent Key unit input)BL-124
4. Replace Intelligent Key unitBL-146

BL-124
INTELLIGENT KEY SYSTEM
Revision: 2004 November 2004 FX35/FX45
Check Intelligent Key Unit Power Supply and Ground CircuitAIS004NB
1. CHECK POWER SUPPLY CIRCUIT
1. Turn ignition knob OFF position.
2. Disconnect Intelligent Key unit connector M34 and measure the
connector terminal (+) and ground (-) shown in the following
table.
OK or NG
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 (Intelligent Key Unit Input)AIS004NC
1. KEY SWITCH INSPECTION
With CONSULT-II
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.
Terminal
(wire color)Signal Designa-
tionIgnition switchVoltage (V)
(Approx.)
6 (G/R)Ignition power
supplyON Battery voltage
10 (LG/R)ACC power sup-
plyACC Battery voltage
11 (L/R)Battery power
supplyOFF Battery voltage
MIIB0360E
12 (B) - Ground : Continuity should exist.
MIIB0361E
When key is inserted in ignition knob : ON
When key is removed in ignition knob : OFF

INTELLIGENT KEY SYSTEM
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Revision: 2004 November 2004 FX35/FX45
2. KEY SWITCH POWER SUPPLY CIRCUIT INSPECTION
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. KEY SWITCH OPERATION INSPECTION
Check continuity between key switch and ignition knob switch terminals 3 and 4.
OK or NG
OK >> GO TO 4.
NG >> Replace key switch.
4. KEY SWITCH CIRCUIT INSPECTION
1. Disconnect Intelligent Key unit connector.
2. Check continuity between Intelligent Key unit connector 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. 3 (L/R) - Ground : Battery voltage
PIIA6738E
Terminals Condition Continuity
3 – 4Key is inserted in ignition key cylinder. Yes
Key is removed from ignition key cylinder. No
PIIA6140E
7 (B/W) - 4 (B/W) : Continuity should exist.
4 (B/W) - Ground : Continuity should not exist.
PIIA6740E

BL-126
INTELLIGENT KEY SYSTEM
Revision: 2004 November 2004 FX35/FX45
Check Key Switch (BCM Input)AIS004ND
1. KEY SWITCH POWER SUPPLY CIRCUIT INSPECTION
1. Turn ignition knob OFF position.
2. Disconnect key switch and ignition 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. KEY SWITCH INSPECTION
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. KEY SWITCH SIGNAL CIRCUIT INSPECTION
1. Disconnect key switch and ignition knob switch connector and
BCM 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.3 (L/R) – Ground : Battery voltage.
PIIA5093E
Terminals Condition Continuity
3 – 4Key is inserted in ignition key cylinder. Yes
Key is removed from ignition key cylinder. No
PIIA6140E
4 (B/W) – 37 (B/W) : Continuity should exist.
4 (B/W) – Ground : Continuity should not exist.
PIIA5095E

INTELLIGENT KEY SYSTEM
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Revision: 2004 November 2004 FX35/FX45
Check Ignition Knob SwitchAIS004NE
1. IGNITION KNOB SWITCH INSPECTION
With CONSULT-II
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. IGNITION KNOB SWITCH POWER SUPPLY CIRCUIT INSPECTION
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. IGNITION KNOB SWITCH OPERATION INSPECTION
Check continuity between key switch and ignition knob switch terminals 1 and 2.
OK or NG
OK >> GO TO 4.
NG >> Replace key switch and ignition knob switch.Press ignition knob. : ON
Return ignition knob (release hands
from ignition knob): OFF
1 (L/R) - Ground : Battery voltage
PIIA6741E
Press ignition knob. : Continuity should exist.
Return ignition knob
(release hands from
ignition knob).: Continuity should not exist.
PIIA9929E