check engine INFINITI FX35 2005 Service Manual

INTELLIGENT KEY SYSTEM BL-123
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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

INTELLIGENT KEY SYSTEM BL-125
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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

IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS) BL-223
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Revision: 2005 July 2005 FX
NATS SELF-DIAGNOSTIC RESULT ITEM CHART
Detected items (Screen terms) P No.Code
(Self-diagnostic
result of
“ENGINE”) Description Diagnostic procedure
ECM INT CIRC-IMMU P1613 The malfunction of ECM internal circuit
to BCM communication line is detected. Refer to
BL-226, "
Diagnostic
Procedure 1" .
CHAIN OF ECM-IMMU P1612 Communication impossible between
ECM and BCM. Refer to
BL-227, "
Diagnostic
Procedure 2" .
DIFFERENCE OF KEY P1615 BCM can receive the key ID signal but
the result of ID verification between key
ID and BCM is NG. Refer to
BL-228, "
Diagnostic
Procedure 3" .
CHAIN OF IMMU-KEY P1614 BCM cannot receive the key ID signal. Refer to
BL-231, "
Diagnostic
Procedure 6" .
ID DISCORD, IMM-ECM P1611 The result of ID verification between
BCM and ECM is NG. System initializa-
tion is required. Refer to
BL-229, "
Diagnostic
Procedure 4" .
LOCK MODE P1610 When the starting operation is carried
out 5 or more times consecutively under
the following conditions, IVIS(NATS) will
shift the mode to prevent the engine
start.

unregistered ignition key is used (with-
out intelligent key system)

BCM or ECM malfunctioning Refer to
BL-230, "
Diagnostic
Procedure 5" .
DON'T ERASE BEFORE
CHECKING ENG DIAG —
Engine trouble data and IVIS (NATS)
trouble data have been detected in ECM. Refer to
BL-224, "
WORK
FLOW" .

IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS) BL-225
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Revision: 2005 July 2005 FX
Trouble Diagnosis Symptom ChartAIS004PK
*: When IVIS (NATS) detects trouble, the security indicator lights up while electronic key is in the “ON” position.
Security Indicator InspectionAIS004PL
*: CONSULT-II self-diagnostic results display screen “no malfunction is detected”. SYMPTOM
Displayed “SELF-DIAG
RESULTS” on CON- SULT-II screen. DIAGNOSTIC PROCE-
DURE SYSTEM (Malfunctioning part or mode)

Security indicator
lighting up*

Engine hard to start ECM INT CIRC-IMMU
[P1613] Refer to
BL-226, "
Diag-
nostic Procedure 1" . ECM
CHAIN OF ECM-IMMU [P1612] Refer to
BL-227, "
Diag-
nostic Procedure 2" . Open circuit in battery voltage line to BCM (NATS
IMMU) circuit
Open circuit in ignition line to BCM (NATS IMMU)
circuit
Open circuit in ground line to BCM (NATS IMMU)
circuit
Open or short circuit between BCM (NATS IMMU)
and ECM communication line.
ECM
BCM (NATS IMMU)
DIFFERENCE OF KEY [P1615] Refer to
BL-228, "
Diag-
nostic Procedure 3" . Unregistered key
NATS IMMU
CHAIN OF IMMU-KEY
[P1614] Refer to
BL-231, "
Diag-
nostic Procedure 6" . Open or short circuit between BCM (NATS IMMU)
and NATS antenna amp.
Malfunction of key ID chip
BCM (NATS IMMU)
Antenna amp.
ID DISCORD, IMM-ECM [P1611] Refer to
BL-229, "
Diag-
nostic Procedure 4"
System initialization has not yet been completed.
ECM
LOCK MODE [P1610] Refer to
BL-230, "
Diag-
nostic Procedure 5" . LOCK MODE

MIL staying ON

Security indicator
lighting up* DON'T ERASE
BEFORE CHECKING
ENG DIAG Refer to
BL-224, "WORK FLOW" . Engine trouble data and IVIS (NATS) trouble data
have been detected in ECM
SYMPTOM SYSTEM
(Malfunctioning part or mode) DIAGNOSTIC PROCEDURE
Security indicator does not operate* Security indicator
Refer to BL-233, "
Diagnostic
Procedure 7" .
Open circuit between Fuse and BCM (NATS
IMMU)
Continuation of initialization mode
BCM (NATS IMMU)

BL-228
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)
Revision: 2005 July 2005 FX
4. CHECK GROUND CIRCUIT FOR BCM
1. Turn ignition switch OFF.
2. Check continuity between BCM connector M4 terminals 49 (B), 52 (B) and ground.
OK or NG
OK >> GO TO 5.
NG >> Repair or replace harness between BCM and ground.
5. REPLACE BCM
1. Replace BCM.
2. Perform initialization with CONSULT-II. For initialization, refer to “CONSULT-II Operation Manual NATS-IVIS/NVIS”.
Does the engine start?
YES >> BCM is malfunctioning.

Replace BCM.

Perform initialization with CONSULT-II.

For initialization, refer to “CONSULT-II Operation Manual NATS-IVIS/NVIS”.
NO >> ECM is malfunctioning.

Replace ECM.

Perform initialization or re-communicating function.
–For re-communicating function, refer to BL-215, "ECM Re-Communicating Function" .
–For initialization, refer to “CONSULT-II Operation Manual NATS-IVIS/NVIS”.
Diagnostic Procedure 3AIS004PO
Self-diagnostic results:
“DIFFERENCE OF KEY” is displayed on CONSULT-II screen
1. CONFIRM SELF-DIAGNOSTIC RESULTS
Confirm that SELF-DIAGNOSTIC RESULTS “DIFFERENCE OF
KEY” is displayed on CONSULT-II screen.
Does CONSULT-II screen display as shown in figure?
YES >> GO TO 2.
NO >> GO TO BL-225, "
Trouble Diagnosis Symptom Chart" .
49 (B) – Ground : Continuity should exist.
52 (B) – Ground : Continuity should exist.
PIIA5084E
PIIA1261E

IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS) BL-231
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4. PERFORM INITIALIZATION WITH CONSULT-II AGAIN
1. Replace BCM.
2. Perform initialization with CONSULT-II. For initialization, refer to “CONSULT-II Operation Manual NATS-
IVIS/NVIS”.
NOTE:
If the initialization is not completed or malfunctions, CONSULT-II
shows the message on the screen.
Can the system be initialized?
YES >> System is OK. BCM is malfunctioning.

Replace BCM.

Perform initialization with CONSULT-II.

For initialization, refer to “CONSULT-II Operation
Manual NATS-IVIS/NVIS”.
NO >> ECM is malfunctioning.

Replace ECM.

Perform initialization or re-communicating function.
–For initialization, refer to “CONSULT-II Operation Manual NATS-IVIS/NVIS”.
–For re-communicating function, refer to BL-215, "ECM Re-Communicating Function" .
Diagnostic Procedure 6AIS004PR
Self-diagnostic results:
“CHAIN OF IMMU-KEY” is displayed on CONSULT-II screen
1. CONFIRM SELF-DIAGNOSTIC RESULTS
Confirm self-diagnostic results “CHAIN OF IMMU-KEY” is displayed on CONSULT-II screen.
Does CONSULT-II screen display as shown?
YES >> GO TO 2.
NO >> GO TO BL-225, "
Trouble Diagnosis Symptom Chart" .
2. CHECK NATS ANTENNA AMP. INSTALLATION
Check NATS antenna amp. installation. Refer to BL-234, "
Removal and Installation NATS Antenna Amp." .
OK or NG
OK >> GO TO 3.
NG >> Reinstall NATS antenna amp. correctly.
3. CHECK KEY ID CHIP
Start engine with another registered ignition key or mechanical key.
Does the engine start?
YES >> Ignition key or mechanical key ID chip is malfunctioning.

Replace the ignition key or mechanical key.

Perform initialization with CONSULT-II.
For initialization, refer to “CONSULT-II Operation Manual NATS–IVIS/NVIS”.
NO >> GO TO 4.
SEL297W

IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS) BL-233
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Revision: 2005 July 2005 FX
7. CHECK NATS ANTENNA AMP. GROUND LINE CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between NATS antenna amp. connector M25 terminal 3 (B) and ground.
OK or NG
OK >> NATS antenna amp. is malfunctioning.
NG >>

Check harness for open or short between NATS
antenna amp. and ground.
NOTE:
If harness is OK, replace BCM, perform initialization
with CONSULT-II. For initialization, refer to “CON-
SULT-II Operation Manual NATS–IVIS/NVIS”.
Diagnostic Procedure 7AIS004PS
“SECURITY INDICATOR LAMP DOES NOT LIGHT UP”
1. CHECK FUSE

Check 10A fuse [No.19, located in the fuse block (J/B)]
NOTE:
Refer to BL-213, "
Component Parts and Harness Connector Location" .
OK or NG
OK >> GO TO 2.
NG >> Replace fuse.
2. CHECK SECURITY INDICATOR LAMP
1. Install 10A fuse [No.19, located in the fuse block (J/B)]
2. Start engine and turn ignition switch OFF.
3. Check the security indicator lamp lights up.
OK or NG
OK >> Inspection END.
NG >> GO TO 3.
3. CHECK SECURITY INDICATOR LAMP POWER SUPPLY CIRCUIT
1. Disconnect security indicator lamp connector.
2. Check voltage between security indicator lamp connector M38 terminal 1 (R/W) and ground.
OK or NG
OK >> GO TO 4.
NG >> Check harness for open or short between fuse and security indicator lamp.
3 (B) – Ground : Continuity should exist.
PIIA6148E
Security indicator lamp should light up.
1 (R/W) – Ground : Battery voltage
PIIA6149E

BR-6
BRAKE PEDAL
Revision: 2005 July 2005 FX
BRAKE PEDALPFP:46501
Inspection and AdjustmentAFS001MT
PLAY AND CLEARANCE BETWEEN BRAKE PEDAL AND FLOOR PANEL WITH PEDAL
DEPRESSED
1. Check brake pedal height from dash lower panel.
2. Adjust height referring to the following specifications.
SFIA1450E
H Brake pedal free height (from dash lower panel
top surface) 161.5
− 171.5 mm (6.36 − 6.75 in)
D Brake pedal depressed height [under a force of
490 N (50 kg, 110 lb) with engine running] More than 80 mm (3.15 in)
C Clearance between bracket and the threaded end
of stop lamp switch or ASCD cancel switch (or
brake switch) 0.74
− 1.96 mm (0.0291 −0.0772 in)
A Pedal play 3 − 11 mm (0.12 − 0.43 in)

BRAKE PEDAL BR-7
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ADJUSTMENT
1. Loosen stop lamp switch and ASCD cancel switch (or brake
switch) by turning it counterclockwise by 45 °.
2. Loosen lock nut (A) on input rod, then rotate input rod to set pedal to the specified height, and tighten lock nut (A).
CAUTION:
Make sure the threaded end of input rod stays inside clevis.
3. With pedal pulled and held by hand, press stop lamp switch and ASCD cancel switch (or brake switch) until its threaded end con-
tacts stopper rubber.
4. With the threaded end of stop lamp switch and ASCD cancel switch (or brake switch) contacting stopper rubber, rotate switch
clockwise by 45 ° to secure.
CAUTION:
Make sure that the clearance (C) between stopper rubber
and threaded end of stop lamp switch and ASCD cancel
switch (or brake switch) is within the standard.
5. Check pedal play. CAUTION:
Make sure that stop lamps go off when pedal is released.
6. Start engine to check brake pedal depressed height.
Removal and InstallationAFS001MU
COMPONENT PARTS LOCATION
Lock nut (A) :
Refer to BR-16, "
Removal and Installation"
SFIA0160E
SFIA1940E

BR-12
BRAKE PIPING AND HOSE
Revision: 2005 July 2005 FX
Removal and Installation of Rear Brake Piping and Brake Hose AFS001N0
REMOVAL
1. Drain brake fluid. Refer to BR-9, "Drain and Refill" .
2. Using a flare nut wrench, remove brake tube from brake hose.
3. Remove bolt.
4. Remove union bolt, and then remove brake hose from caliper assembly.
INSTALLATION
1. Install brake hose to caliper assembly positioning hole and tighten union bolt to the specified torque.
NOTE:
Do not reuse copper washer.
2. Install brake hose to brake tube, partially tighten flare nut as far as possible by hand, then tighten bolt to the specified torque.
3. Using a flare nut wrench, tighten flare nut to the specified torque.
4. Refill brake fluid and bleed air. Refer to BR-10, "
Bleeding Brake
System" .
Inspection After InstallationAFS001N1
CAUTION:
If a leak is detected at the connections, retighten it or, if necessary, replace the damaged part.
1. Check brake lines (tubes and hoses), and connections for fluid leaks, damage, twist, deformation, contact with other parts, and loose connections. Replace any damage parts.
2. While depressing brake pedal under a force of 785 N (80 kg, 177 lb) with engine running for approximately 5 seconds, check for fluid leakage from each part. : 23.5 N·m (2.4 kg-m, 17 ft-lb)
SFIA1942E