ignition INFINITI FX35 2005 Service Manual

TF-32
TROUBLE DIAGNOSIS FOR SYSTEM
Revision: 2005 July 2005 FX
4. CHECK DTC
Perform the self-diagnosis, after driving a vehicle for a while.
OK or NG
OK >> INSPECTION END
NG >> Replace AWD control unit.
Engine Control SignalADS001G7
DIAGNOSTIC PROCEDURE

Check the following if “ECM SIGNAL 1 [C1210]” is displayed in self-diagnostic results of CONSULT-II.
1. CHECK DTC WITH ECM
Perform self-diagnosis with ECM. Refer to EC-55, "
Emission-Related Diagnostic Information" (VQ engine
models) or EC-746, "
Emission-Related Diagnostic Information" (VK engine models).
Is any malfunction detected by self-diagnosis?
YES >> Check the malfunctioning system.
NO >> GO TO 2.
2. CHECK AWD CONTROL UNIT
Check AWD control unit input/output signal. Refer to TF-20, "
AWD Control Unit Input/Output Signal Reference
Va l u e s" .
OK or NG
OK >> GO TO 3.
NG >> Check AWD control unit pin terminals for damage or loose connection with harness connector. If any items are damaged, repair or replace damaged parts.
3. CHECK DTC
Perform the self-diagnosis, after driving a vehicle for a while.
OK or NG
OK >> INSPECTION END
NG >> Perform self-diagnosis with ECM again. Refer to EC-55, "
Emission-Related Diagnostic Informa-
tion" (VQ engine models) or EC-746, "Emission-Related Diagnostic Information" (VK engine
models).
CAN Communication LineADS000T2
DIAGNOSTIC PROCEDURE

Check the following if “CAN COMM CIRCUIT [U1000]” is detected in self-diagnostic results of CONSULT-
II.
1. CHECK CAN COMMUNICATION CIRCUIT
With CONSULT-II
1. Turn ignition switch “ON” and start engine.
2. Select “SELF-DIAG RESULTS” mode for “ALL MODE AWD/4WD” with in CONSULT-II.
3. Perform the self-diagnosis.
Is the
“CAN COMM CIRCUIT [U1000]” displayed?
YES >> Print out CONSULT-II screen and go to LAN-5, "Precau-
tions When Using CONSULT-II" .
NO >> INSPECTION END
SDIA1850E

TROUBLE DIAGNOSIS FOR SYMPTOMS TF-33
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Revision: 2005 July 2005 FX
TROUBLE DIAGNOSIS FOR SYMPTOMSPFP:00007
AWD Warning Lamp Does Not Turn ON When The Ignition Switch Is Turned to
ON
ADS000TW
DIAGNOSTIC PROCEDURE
1. CHECK SYSTEM FOR CAN COMMUNICATION LINE
Perform self-diagnosis. Refer to TF-22, "
SELF-DIAG RESULT MODE" .
Is the
“CAN COMM CIRCUIT [U1000]” displayed?
YES >> Perform trouble diagnosis for CAN communication line. Refer to TF-32, "CAN Communication
Line" .
NO >> GO TO 2.
2. CHECK AWD CONTROL UNIT
Check AWD control unit input/output signal. Refer to TF-20, "
AWD Control Unit Input/Output Signal Reference
Va l u e s" .
OK or NG
OK >> GO TO 3.
NG >> Check AWD control unit pin terminals for damage or loose connection with harness connector. If
any items are damaged, repair or replace damaged parts.
3. CHECK OUTPUT SIGNAL WITH UNIFIED METER AND A/C AMP.
With CONSULT-II
1. Turn ignition switch “ON”. (Do not start engine.)
2. Select “DATA MONITOR” mode for “METER A/C AMP” with CONSULT-II.
3. Start the engine, and then make sure that “4WD W/L” display turns from "ON" to "OFF" after several seconds.
OK or NG
OK >> GO TO 4.
NG >> Perform trouble diagnosis for combination meter. Refer to DI-15, "
Trouble Diagnosis" .
4. SYMPTOM CHECK
Check again.
OK or NG
OK >> INSPECTION END
NG >> Replace unified meter control unit assembly. Refer to DI-26, "
Disassembly and Assembly of Com-
bination Meter" .
AWD Warning Lamp Does Not Turn OFF Several Seconds after Engine StartedADS000TX
DIAGNOSTIC PROCEDURE
1. CHECK SELF-DIAGNOSTIC RESULTS
Perform self-diagnosis. Refer to TF-22, "
SELF-DIAG RESULT MODE" .
Is any malfunction detected by self-diagnosis?
YES >> Check the malfunctioning system.
NO >> GO TO 2.
Monitor item Condition Display value
4WD W/L Ignition switch ON ON
Start engine (after several seconds) OFF
SDIA2065E

TF-34
TROUBLE DIAGNOSIS FOR SYMPTOMS
Revision: 2005 July 2005 FX
2. CHECK AWD CONTROL UNIT POWER SUPPLY CIRCUIT
1. Turn ignition switch “OFF”.
2. Disconnect AWD control unit harness connector.
3. Turn ignition switch “ON”. (Do not start engine.)
4. Check voltage between AWD control unit harness connector ter- minals and ground.
5. Turn ignition switch “OFF”.
6. Check voltage between AWD control unit harness connector ter- minals and ground.
OK or NG
OK >> GO TO 3.
NG >> Check the following. If any items are damaged, repair or
replace damaged parts.

10A fuse [No. 12 or 21, located in the fuse block (J/B)]

Harness for short or open between battery and AWD control unit harness connector terminal 9

Harness for short or open between ignition switch and AWD control unit harness connector ter-
minal 7

Ignition switch. Refer to PG-3, "POWER SUPPLY ROUTING CIRCUIT" .
3. CHECK AWD CONTROL UNIT GROUND CIRCUIT
1. Turn ignition switch “OFF”.
2. Disconnect AWD control unit harness connector.
3. Check continuity between AWD control unit harness connector M92 terminals 10 (B), 11 (B) and ground.
Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 4.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
Connector Terminal (Wire color) Voltage (Approx.)
M92 7 (G/R) - Ground
Battery voltage
9 (G/W) - Ground
SDIA2319E
Connector Terminal (Wire color) Voltage (Approx.)
M92 7 (G/R) - Ground 0V
9 (G/W) - Ground Battery voltage
SDIA2320E
Continuity should exist.
SDIA1883E

TROUBLE DIAGNOSIS FOR SYMPTOMS TF-35
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Revision: 2005 July 2005 FX
4. CHECK AWD CONTROL UNIT
Check AWD control unit input/output signal. Refer to TF-20, "
AWD Control Unit Input/Output Signal Reference
Va l u e s" .
OK or NG
OK >> GO TO 5.
NG >> Check AWD control unit pin terminals for damage or loose connection with harness connector. If any items are damaged, repair or replace damaged parts.
5. CHECK OUTPUT SIGNAL WITH UNIFIED METER AND A/C AMP.
With CONSULT-II
1. Turn ignition switch “ON”. (Do not start engine.)
2. Select “DATA MONITOR” mode for “METER A/C AMP” with CONSULT-II.
3. Start the engine, and then make sure that “4WD W/L” display turns from "ON" to "OFF" after several seconds.
OK or NG
OK >> GO TO 6.
NG >> Perform trouble diagnosis for combination meter. Refer to DI-15, "
Trouble Diagnosis" .
6. SYMPTOM CHECK
Check again.
OK or NG
OK >> INSPECTION END
NG >> Replace unified meter control unit assembly. Refer to DI-26, "
Disassembly and Assembly of Com-
bination Meter" .
Heavy Tight-Corner Braking Symptom Occurs When The Vehicle Is Driven and
The Steering Wheel Is Turned Fully to Either Side after The Engine Is Started
ADS000TZ
NOTE:
Light tight-corner braking symptom may occur depending on driving conditions. This is not malfunc-
tion.
DIAGNOSTIC PROCEDURE
1. CHECK SYSTEM FOR CAN COMMUNICATION LINE
Perform self-diagnosis. Refer to TF-22, "
SELF-DIAG RESULT MODE" .
Is the
“CAN COMM CIRCUIT [U1000]” displayed?
YES >> Perform trouble diagnosis for CAN communication line. Refer to TF-32, "CAN Communication
Line" .
NO >> GO TO 2.
2. CHECK ACCELERATOR PEDAL POSITION SIGNAL CIRCUIT
Perform self-diagnosis for ECM. Refer to EC-55, "
Emission-Related Diagnostic Information" (VQ35DE mod-
els) or EC-746, "
Emission-Related Diagnostic Information" (VK45DE models).
Is any malfunction detected by self-diagnosis?
YES >> Check the malfunctioning system.
NO >> GO TO 3.
Monitor item Condition Display value
4WD W/L Ignition switch ON ON
Start engine (after several seconds) OFF
SDIA2065E

TF-36
TROUBLE DIAGNOSIS FOR SYMPTOMS
Revision: 2005 July 2005 FX
3. CHECK SYSTEM FOR AWD SOLENOID
Perform trouble diagnosis for AWD solenoid system. Refer to TF-28, "
AWD Solenoid" .
OK or NG
OK >> GO TO 4.
NG >> Repair or replace damaged parts.
4. CHECK ELECTRIC CONTROLLED COUPLING
1. Turn ignition switch “OFF”.
2. Set the selector lever to “N” (neutral) position and disengage the parking brake.
3. Lift up the vehicle.
4. Rotate the rear propeller shaft by hand.
5. Hold front propeller shaft lightly.
Does front propeller shaft rotate?
YES >> Replace electric controlled coupling for mechanical malfunction (clutch sticking etc.). Refer to TF-
45, "Disassembly and Assembly" .
NO >> GO TO 5.
5. SYMPTOM CHECK
Check again.
OK or NG
OK >> INSPECTION END
NG >> GO TO 6.
6. CHECK AWD CONTROL UNIT
Check AWD control unit input/output signal. Refer to TF-20, "
AWD Control Unit Input/Output Signal Reference
Va l u e s" .
OK or NG
OK >> INSPECTION END
NG >> Check AWD control unit pin terminals for damage or loose connection with harness connector. If
any items are damaged, repair or replace damaged parts.
Vehicle Does Not Enter AWD Mode Even Though AWD Warning Lamp Turned to
OFF
ADS000U0
DIAGNOSTIC PROCEDURE
1. CHECK AWD SOLENOID
Check AWD solenoid. Refer to TF-30, "
COMPONENT INSPECTION" .
OK or NG
OK >> GO TO 2.
NG >> Replace electric controlled coupling for malfunction of AWD solenoid. Refer to TF-45, "
Disassem-
bly and Assembly" .
2. CHECK AWD CONTROL UNIT
Check AWD control unit input/output signal. Refer to TF-20, "
AWD Control Unit Input/Output Signal Reference
Va l u e s" .
OK or NG
OK >> GO TO 3.
NG >> Check AWD control unit pin terminals for damage or loose connection with harness connector. If any items are damaged, repair or replace damaged parts.

TROUBLE DIAGNOSIS FOR SYMPTOMS TF-37
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Revision: 2005 July 2005 FX
3. SYMPTOM CHECK
Check again.
OK or NG
OK >> INSPECTION END
NG >> Replace electric controlled coupling for mechanical malfunction (mechanical engagement of
clutch is not possible.). Refer to TF-45, "
Disassembly and Assembly" .
While Driving, AWD Warning Lamp Flashes Rapidly (When Flashing in Approx.
1 Minute and Then Turning OFF)
ADS000U1
NOTE:
Rapid flashing: 2 times/second
This symptom protects drivetrain parts when a heavy load is applied to the electric controlled coupling and
multiple disc clutch temperature increases. Also, optional distribution of torque sometimes becomes rigid
before lamp flashes rapidly. Both cases are not malfunction.
When this symptom occurs, stop vehicle and allow it to idle for some times. Flashing will stop and system will
be restored.
While Driving, AWD Warning Lamp Flashes Slowly (When Continuing to Flash
until Turning Ignition Switch OFF)
ADS000U2
NOTE:
Slow flashing: 1 time/2 seconds
DIAGNOSTIC PROCEDURE
1. CHECK TIRE
Check the following.

Tire pressure

Wear condition

Longitudinal tire size (There is no difference between longitudinal tires.)
OK or NG
OK >> GO TO 2.
NG >> Drive at vehicle speed of 20 km/h (12 MPH) or more for 5 seconds or more after repairing or
replacing damaged parts. (Initialize improper size tire information.)
2. CHECK INPUT SIGNAL OF TIRE DIAMETER
With CONSULT-II
1. Start engine.
2. Drive at 20 km/h (12 MPH) or more for approx. 200 seconds.
3. Select “DATA MONITOR” mode for “ALL MODE AWD/4WD” with CONSULT-II.
4. Check monitor “DIS-TIRE MONI”.
Display of
“DIS-TIRE MONI”
“0-4mm”>> INSPECTION END
Except for “0-4mm”>>GO TO 3.
SDIA1900E

WT-1
ROAD WHEELS & TIRES
E SUSPENSION
CONTENTS
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SECTION WT
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WT
Revision: 2005 July 2005 FX
ROAD WHEELS & TIRES
PREPARATION ........................................................... 2
Special Service Tools .......................................... ..... 2
Commercial Service Tools ................................... ..... 2
NOISE, VIBRATION AND HARSHNESS (NVH)
TROUBLESHOOTING ........................................... ..... 3
NVH Troubleshooting Chart ................................ ..... 3
ROAD WHEEL ....................................................... ..... 4
Inspection ............................................................ ..... 4
ALUMINUM WHEEL ........................................ ..... 4
STEEL WHEEL ................................................ ..... 4
ROAD WHEEL TIRE ASSEMBLY ......................... ..... 5
Balancing Wheels (Bonding Weight Type) .......... ..... 5
REMOVAL ........................................................ ..... 5
WHEEL BALANCE ADJUSTMENT ................. ..... 5
Tire Rotation ........................................................ ..... 6
LOW TIRE PRESSURE WARNING SYSTEM ....... ..... 7
System Components ........................................... ..... 7
System Description ............................................. ..... 7
TRANSMITTER ................................................ ..... 7
REMOTE KEYLESS ENTRY RECEIVER ........ ..... 7
BCM (BODY CONTROL MODULE) ................. ..... 8
LOW TIRE PRESSURE WARNING LAMP ...... ..... 8
DISPLAY UNIT ................................................. ..... 8
CAN COMMUNICATION ....................................... ..... 9
System Description ............................................. ..... 9
TROUBLE DIAGNOSES ....................................... ... 10
Schematic ........................................................... ... 10
Wiring Diagram ................................................... .... 11
Control Unit Input/Output Signal Standard .......... ... 14
ID Registration Procedure ................................... ... 16
ID REGISTRATION WITH ACTIVATION TOOL ... 16
ID REGISTRATION WITHOUT ACTIVATION
TOOL ............................................................... ... 17
Transmitter Wake Up Operation .......................... ... 18
WITH ACTIVATION TOOL ............................... ... 18
Self-Diagnosis ..................................................... ... 19
DESCRIPTION ................................................. ... 19
FUNCTION ....................................................... ... 19
LOW TIRE PRESSURE WARNING LAMP DIAG-
NOSTIC CHART .............................................. ... 19 CONSULT-II ......................................................
... 20
WORK SUPPORT MODE ................................ ... 21
SELF-DIAGNOSTIC RESULTS MODE ............ ... 21
DATA MONITOR MODE ................................... ... 22
ACTIVE TEST MODE ...................................... ... 22
How to Perform Trouble Diagnosis for Quick and
Accurate Repair ................................................... ... 25
INTRODUCTION .............................................. ... 25
WORK FLOW ................................................... ... 25
Preliminary Check ............................................... ... 26
Malfunction Code/Symptom Chart ....................... ... 27
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC
ITEMS ..................................................................... ... 28
Inspection 1: Transmitter or Control Unit (BCM) .. ... 28
MALFUNCTION CODE NO. 21, 22, 23 OR 24 ... 28
Inspection 2: Transmitter - 1 ................................ ... 28
MALFUNCTION CODE NO. 31, 32, 33, 34, 41,
42, 43, 44, 45, 46, 47 OR 48 ............................ ... 28
Inspection 3: Transmitter - 2 ................................ ... 29
MALFUNCTION CODE NO. 35, 36, 37 OR 38 ... 29
Inspection 4: Vehicle Speed Signal ..................... ... 30
MALFUNCTION CODE NO. 52 ........................ ... 30
TROUBLE DIAGNOSIS FOR SYMPTOMS ........... ... 31
Inspection 1: Warning Lamp Does Not Come On
When Ignition Switch Is Turned On ..................... ... 31
Inspection 2: Warning Lamp Stays On When Ignition
Switch Is Turned On ............................................ ... 31
Inspection 3: Warning Lamp Blinks When Ignition
Switch Is Turned On ............................................ ... 33
Inspection 4: Turn Signal Lamp Blinks When Ignition
Switch Is Turned On ............................................ ... 34
Inspection 5: ID Registration Can Not Be Completed ... 34
REMOVAL AND INSTALLATION .......................... ... 35
Transmitter .......................................................... ... 35
REMOVAL ........................................................ ... 35
INSTALLATION ................................................ ... 35
SERVICE DATA ..................................................... ... 37
Road Wheel ......................................................... ... 37
Tire ...................................................................... ... 37
Tightening Torque ................................................ ... 37

WT-8
LOW TIRE PRESSURE WARNING SYSTEM
Revision: 2005 July 2005 FX
BCM (BODY CONTROL MODULE)
The BCM reads the air pressure signal received by the remote key-
less entry receiver, and controls the low tire pressure warning lamp
and the buzzer operations as shown below. It also has a judgement
function to detect a system malfunction.
LOW TIRE PRESSURE WARNING LAMP
The combination meter receives tire pressure status from the BCM
using CAN communication. When a low tire pressure condition is
sensed by the BCM, the combination meter low tire pressure warn-
ing lamp and buzzer are activated.
DISPLAY UNIT
Displays the air pressure of each tire.

After the ignition switch is turned ON, the pressure values are
not displayed until the data of each wheel stabilizes.
Condition Warning lamp Buzzer
Less than 178 kPa (1.78 kg/cm
2 , 26 psi)
[Flat tire] ON Sounds for 10 sec.
System malfunction ON OFF
SEIA0591E
SEIA0434E
SKIA5994E

WT-14
TROUBLE DIAGNOSES
Revision: 2005 July 2005 FX
Control Unit Input/Output Signal StandardAES000Z4
Standards using a circuit tester and oscilloscope
Terminal
Item Condition Voltage (V)
Approx. value
+–
15 (G)
Ground Tire pressure warning check
connector Always 5V
18 (B) Remote keyless entry receiver
(Ground) —0V
19 (R) Remote keyless entry receiver
(Power supply) Stand-by
Press any of the keyfob
switches
20 (Y) Remote keyless entry receiver
(Signal) Stand-by
Press any of the keyfob
switches
38 (W/L) Ignition switch Ignition switch ON or START Battery voltage (12V)
39 (L) Data line (CAN H) — —
40 (R) Data line (CAN L) — —
42 (L/R) Battery power supply (Fuse) Always Battery voltage (12V)
45 (G/W) Turn signal (left)

Ignition switch ON

Combination switch is turn
signal (left)
OCC3879D
OCC3882D
OCC3881D
OCC3880D
SKIA3009J

TROUBLE DIAGNOSES WT-15
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Revision: 2005 July 2005 FX( ): Wire color 46 (BR/W)
Ground Turn signal (right)

Ignition switch ON

Combination switch is turn
signal (right)
49 (B) Ground — 0V
52 (B)
55 (G) Battery power supply (F/L) Always Battery voltage (12V) Terminal
Item Condition Voltage (V)
Approx. value
+–
SKIA3009J