2005 INFINITI FX35 battery

INTELLIGENT KEY SYSTEM BL-123
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Revision: 2005 July 2005 FX
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
circuit BL-129
2. Check CAN communication
BL-128
3. Replace Intelligent Key unitBL-151
“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 registered Refer to
CONSULT-II Operation Manual
2. Use CONSULT-II setting change function to check if
Intelligent Key system has been cancelled BL-120
3. Intelligent Key battery inspection
BL-152
4. Replace Intelligent Key unitBL-151
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 setting
BL-120
2. Intelligent Key battery inspectionBL-152
3. Check door unlock sensorBL-136
4. Check door switchBL-133
5. Replace BCMBCS-16
6. Replace Intelligent Key unit BL-151
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 setting
BL-120
2. Replace BCMBCS-16
3. Replace Intelligent Key unit BL-151
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 mode
BL-120
2. Check headlamp functionBL-150
3. Check horn functionBL-150
4. Check IPDM E/R operationBL-150
5. Check key switch (Intelligent Key unit input)BL-129
6. Check ignition knob switchBL-132
7. Replace Intelligent Key unitBL-151
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 setting
BL-120
2. Replace BCMBCS-16
3. Replace Intelligent Key unit BL-151
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 function
BL-150
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 function BL-120
2. Check Intelligent Key warning buzzer
BL-139
3. Replace Intelligent Key unitBL-151

BL-124
INTELLIGENT KEY SYSTEM
Revision: 2005 July 2005 FX
DOOR LOCK FUNCTION MALFUNCTION
Before conducting the diagnosis in the following table, check all power door lock system function. Refer to BL-
21, "POWER DOOR LOCK SYSTEM" .
Symptom Diagnoses service procedure Refer to page
Door lock/unlock does not operate when door
request switch operation is used (power door
lock system is normal). 1. Check door lock/unlock setting
BL-120
2. Check outside key antennaBL-140
3. Intelligent Key battery inspectionBL-152
4. Replace Intelligent Key unitBL-151
Door lock/unlock do not operate using door
request switch operated (power door lock sys-
tem is normal). 1. Check door switch
BL-1332. Check key switch (Intelligent Key unit input)BL-129
3. Check ignition knob switchBL-132
4. Replace Intelligent Key unitBL-151
Driver side selective door unlock function does
not operate, when door request switch is oper-
ated.
(All other door lock function is OK.) 1. Check selective door unlock setting
BL-120
2. Replace BCMBCS-16
Passenger side selective door unlock function
does not operate, when door request switch is
operated.
(All other door lock function is OK.) 1. Check selective door unlock setting
BL-120
2. Check passenger side select unlock relayBL-149
3. Replace Intelligent Key unitBL-151
Hazard lamps do not flash during door lock
operation using door request switch operated.
(Turn signal lamp operation is normal.)
(All other door lock function is OK.) 1. Check key reminder setting
BL-120
2. Replace BCMBCS-16
3. Replace Intelligent Key unit BL-151
Hazard lamps do not flash during door lock
operation using door request switch operated.
(Turn signal lamps do not operate.) Check hazard function
BL-150

Intelligent Key warning buzzer does not sound
during door lock/unlock operation using Intelli-
gent Key (regardless of whether Intelligent Key
remote controller button or request switch oper-
ation is used). 1. Check if the operation confirmation Intelligent Key
warning buzzer was cancelled by the CONSULT-II
settings change function BL-120
2. Check Intelligent Key warning buzzer
BL-139
3. Replace Intelligent Key unitBL-151
Door lock/unlock operation confirmation Intelli-
gent Key warning buzzer sounds, but door lock
actuator does not operate. (And hazard lamps
do not flash.) 1. Check CAN communication
BL-128
2. Replace Intelligent Key unitBL-151

INTELLIGENT KEY SYSTEM BL-125
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Revision: 2005 July 2005 FX
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 battery inspection
BL-152
2. Check inside key antennaBL-143
3. Replace Intelligent Key unitBL-151
KEY warning lamp on combination meter
lights up in green when ignition knob is
pressed. 1. Check ignition knob switch
BL-1322. Check steering lock unitBL-144
3. Check Intelligent Key unit power supply and ground circuitBL-129
4. Replace Intelligent Key unitBL-151
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-129
2. Replace Intelligent Key unitBL-151
Security indicator does not flash with igni-
tion knob released at LOCK position. (push
switch OFF) 1. CAN communication system
BL-128
2. Ignition knob switch systemBL-132
3. Intelligent Key unit power supply and ground circuitBL-129
Starter motor does not cranking.
(Ignition knob can turn) 1. Check detention switch
BL-1472. Check stop lamp switchBL-146
3. Replace Intelligent Key unitBL-151
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-131
2. Replace Intelligent Key unitBL-151
KEY indicator and security indicator does
not flashing with mechanical key inserted. 1. Check stop lamp switch
BL-146
2. Replace Intelligent Key unitBL-151
Starter motor does not cranking.
(Ignition knob can turn) 1. Check detention switch
BL-1472. Check stop lamp switchBL-146
3. Replace Intelligent Key unitBL-151
Symptom Diagnoses service procedure Refer to page
Ignition key warning chime is inoperative.
(When mechanical key used) 1. Check CAN communication
BL-128
2. Check key switch (Intelligent Key unit input)BL-129
3. Check door switchBL-133
4. Inspect combination meter (warning) DI-5
5. Replace Intelligent Key unitBL-151
Ignition knob OFF position warning
chime (for inside vehicle) does not
sound.
(Ignition key warning chime operates) 1. Check CAN communication
BL-1282. Check ignition knob switchBL-132
3. Check key switch (Intelligent Key unit input)BL-129
4. Replace Intelligent Key unitBL-151

BL-126
INTELLIGENT KEY SYSTEM
Revision: 2005 July 2005 FX
Ignition knob OFF position warning
chime (for outside vehicle: after door
open/closed) does not sound. 1. Check CAN communication
BL-1282. Check ignition knob switchBL-132
3. Check door switchBL-133
4. Check Intelligent Key warning buzzerBL-139
5. Replace Intelligent Key unitBL-151
Intelligent Key take out warning chime
(when door open/closed) does not
sound. 1. Check CAN communication
BL-128
2. Intelligent Key battery inspectionBL-152
3. Check ignition knob switchBL-132
4. Check door switchBL-133
5. Check Intelligent Key warning buzzerBL-139
6. Replace Intelligent Key unitBL-151
Intelligent Key take out warning chime
(when door opened/closed) sounds even
though Intelligent Key is in vehicle. 1. Check inside key antenna
BL-143
2. Intelligent Key battery inspectionBL-152
3. Replace Intelligent Key unitBL-151
P position selecting warning lamp does
not light up 1. Check detention switch
BL-1472. Check combination meter DI-5
3. Replace Intelligent Key unitBL-151
Intelligent Key take out warning chime
(when selector lever is except P position)
does not sound. 1. Check CAN communication
BL-128
2. Check detention switchBL-147
3. Replace Intelligent Key unitBL-151
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-II settings change
function BL-1202. Check CAN communication
BL-98
3. Intelligent Key battery inspectionBL-152
4. Check ignition knob switchBL-132
5. Replace Intelligent Key unitBL-151
Intelligent Key take out warning chime
(through window) sounds even though
Intelligent Key is in vehicle. 1. Check inside key antenna
BL-143
2. Intelligent Key battery inspectionBL-152
3. Replace Intelligent Key unitBL-151
Symptom Diagnoses service procedure Refer to page

INTELLIGENT KEY SYSTEM BL-127
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Revision: 2005 July 2005 FX
Door lock non-operation warning does
not sound. Intelligent Key warning chime does not sound
1. Intelligent Key battery inspection BL-152
2. Check door request switchBL-137
3. Check inside key antennaBL-143
4. Check Intelligent Key warning buzzerBL-139
5. Replace Intelligent Key unitBL-151
Ignition knob OFF position warning chime does not sound
1. Intelligent Key battery inspection BL-152
2. Check door request switchBL-137
3. Check outside key antennaBL-140
4. Check Intelligent Key warning buzzerBL-139
5. Check ignition knob switchBL-132
6. Replace Intelligent Key unitBL-151
Door ajar alarm
1. Check CAN communications BL-128
2. Check door request switchBL-137
3. Check outside key antennaBL-140
4. Check Intelligent Key warning buzzerBL-139
5. Check door switchBL-133
6. Intelligent Key battery inspectionBL-152
7. Replace Intelligent Key unitBL-151
Symptom Diagnoses service procedure Refer to page

INTELLIGENT KEY SYSTEM BL-129
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Revision: 2005 July 2005 FX
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.
3. Check voltage between Intelligent Key unit connector and ground.
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. CHECK KEY SWITCH
With CONSULT-II
Display “KEY SW” on DATA MONITOR screen, and check if ON-
OFF display is linked to insertion of mechanical key in ignition knob.
OK or NG
OK >> Key switch is OK.
NG >> GO TO 2.
Connector Terminal
(Wire color) Ignition knob position
M34 (+) (–) OFF ACC ON
6
(G/R)
Ground 0V 0V Battery voltage
10
(LG/R) 0V Battery voltage Battery voltage
11
(L/R) Battery voltage Battery voltage 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
PIIB1359E

BL-130
INTELLIGENT KEY SYSTEM
Revision: 2005 July 2005 FX
2. CHECK KEY SWITCH POWER 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.
4. CHECK KEY SWITCH CIRCUIT
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
34 Key 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

INTELLIGENT KEY SYSTEM BL-131
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Revision: 2005 July 2005 FX
Check Key Switch (BCM Input)AIS004ND
1. CHECK KEY SWITCH POWER SUPPLY CIRCUIT
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. 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
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
34 Key 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