atc INFINITI FX35 2005 Service Manual

ABCDEFGHIJKMLQUICK REFERENCE INDEX AGENERAL INFORMATIONGIGeneral InformationBENGINEEMEngine MechanicalLUEngine Lubrication SystemCOEngine Cooling SystemECEngine Control SystemFLFuel SystemEXExhaust SystemACCAccelerator Control SystemCTRANSMISSION/
TRANSAXLEATAutomatic TransmissionDDRIVELINE/AXLETFTransferPRPropeller ShaftFFDFront Final DriveRFDRear Final DriveFAXFront AxleRAXRear AxleESUSPENSIONFSUFront SuspensionRSURear SuspensionWTRoad Wheels & TiresFBRAKESBRBrake SystemPBParking Brake SystemBRCBrake Control SystemGSTEERINGPSPower Steering SystemHRESTRAINTSSBSeat BeltsSRSSupplemental Restraint System
(SRS)IBODYBLBody, Lock & Security SystemGWGlasses, Window System & Mir-
rorsRFRoofEIExterior & InteriorIPInstrument PanelSESeatJAIR CONDITIONERATCAutomatic Air ConditionerKELECTRICALSCStarting & Charging SystemLTLighting SystemDIDriver Information SystemWWWiper, Washer & HornBCSBody Control SystemLANLAN SystemAVAudio Visual, Navigation & Tele-
phone SystemACSAuto Cruise Control SystemPGPower Supply, Ground & Circuit Ele-
mentsLMAINTENANCEMAMaintenanceMINDEXIDXAlphabetical IndexEdition: August 2004
Revision: July 2005

ACTION TEST ACS-9
[ICC]
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ACTION TESTPFP:00000
ICC System Running TestAKS00C8H
VEHICLE-TO-VEHICLE DISTANCE CONTROL MODE
Set Checking
1. Press the MAIN switch for less than 1.5 seconds.
2. Drive the vehicle between 25 MPH (40 km/h for CANADA models) and 90 MPH (144 km/h for CANADA models).
3. Push the SET/COAST switch.
4. Confirm that the desired speed is set as hand is released from the SET/COAST switch.
NOTE:

When there is no vehicle ahead, drive at the set speed steadily.

When there is a vehicle ahead, control to maintain distance from the vehicle ahead, watching its speed.

The set vehicle speed is displayed on the ICC system indicator in the combination meter.
Check For Increase Of Cruising Speed
1. Set vehicle-to-vehicle distance control mode at desired speed.
2. Check if the set speed increases by 1 MPH (1 km/h for CANADA models) as RESUME/ACCELERATE switch is pushed.
NOTE:
The maximum set speed of the vehicle-to-vehicle distance control mode is 90 MPH (144 km/h for CANADA
models).
Check For Decrease Of Cruising Speed
1. Set vehicle-to-vehicle distance control mode at desired speed.
2. Check if the set speed decreases by 1 MPH (1 km/h for CANADA models) as SET/COAST switch is pushed.
NOTE:

Vehicle-to-vehicle distance control mode is automatically turned off when the driving speed lowers to 20
MPH (32 km/h for CANADA models) due to the deceleration of the vehicle ahead.

The minimum set speed of the vehicle-to-vehicle distance control mode is 25 MPH (40 km/h for CANADA
models).
Check For Cancellation Of Vehicle-To-Vehicle Distance Control Mode (Normal Driving Condi-
tion) In The Following Cases:
1. When the brake pedal is depressed after the system is turned ON.
2. When the selector lever is shifted into other than “D” including manual shift.
3. When the MAIN switch is turned OFF.
4. When CANCEL switch is operated.
Check For Restoring Speed That Is Set By Vehicle-To-Vehicle Distance Control Mode Before
Cancellation
1. Cancel the system by depressing the foot brake. Then, check that the speed before cancellation is
restored when pressing RESUME/ACCELERATE switch with 25 MPH (40 km/h for CANADA models) or
above.
2. Cancel the system by shifting the selector lever into other than “D”. Then, check if the speed set before the cancellation is restored when RESUME/ACCELERATE switch is pressed.
3. Check if the speed previously set is restored when RESUME/ACCELERATE switch is operated with driv- ing 25 MPH (40 km/h for CANADA models), after canceling vehicle-to-vehicle distance control mode by
operating the CANCEL switch.

TROUBLE DIAGNOSIS — GENERAL DESCRIPTION ACS-31
[ICC]
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6. Touch any of “WORK SUPPORT”, “SELF-DIAG RESULTS”,
“DATA MONITOR”, “CAN DIAG SUPPORT MNTR”, “ACTIVE
TEST” and “ECU PART NUMBER” on selection screen.
WORK SUPPORT
Work Item
Cause of Auto-Cancel
1. Touch “WORK SUPPORT” on the “SELECT DIAG MODE” screen. Refer to ACS-30, "
CONSULT-II BASIC OPERATION" .
2. Touch “CAUSE OF AUTO-CANCEL” on the “SELECT WORK ITEM” screen.
3. Cause of automatic cancellation screen will be shown. CAUTION:
Last five cancel (system cancel) causes are displayed.
Display Item List
Laser Beam Adjust
For details, refer to ACS-12, "LASER BEAM AIMING ADJUSTMENT" .
PKIA8867E
Operation Function
CAUSE OF AUTO-CANCEL Indicates causes of automatic cancellation of the ICC system.
LASER BEAM ADJUST Outputs laser beam, calculates dislocation of the beam, and indicates adjustment direction.
SKIA6191E
Cause of cancellation Description
OPERATING WIPER Windshield wipers were operated at HI or LO speed operation.
OPERATING ABS ABS function was operated.
OPERATING TCS TCS function was operated.
OPERATING VDC VDC function was operated.
OPE SW VOLT CIRC Outside the standard control switch input voltage was detected.
ECM CIRCUIT ECM did not permit ICC operation.
LASER SUN BEAM Intense light such as sunlight entered ICC sensor light sensing part.
LASER TEMP Temperature around ICC sensor became low.
OP SW DOUBLE TOUCH ICC steering switches were pressed at the same time.
WHL SPD ELEC NOISE Wheel speed sensor signal caught electromagnetic noise.
VDC/TCS OFF SW VDC OFF switch was pressed.
WHEEL SPD UNMATCH Wheel speed became different from AT vehicle speed.
TIRE SLIP Wheel slipped.
PKB SW ON Parking brake is applied.
IGN LOW VOLT Power supply voltage became low.
SNOW MODE SW Snow mode switch was pressed.
NO RECORD —

ACS-66
[ICC]
TROUBLE DIAGNOSIS FOR SYMPTOMS
Revision: 2005 July 2005 FX
Symptom 1: MAIN Switch Does Not Turn ON*1 , MAIN Switch Does Not Turn
OFF
*2AKS00C99
NOTE:

*1: The ICC system display in the combination meter does not illuminate.

*2: The ICC system display in the combination meter remains powered.
1. CHECK MAIN SWITCH
With CONSULT-II
With “DATA MONITOR”, check that MAIN switch operates normally.
OK or NG
OK >> GO TO 2.
NG >> GO TO 3.
2. CHECK CONNECTOR ICC UNIT
1. Turn ignition switch OFF.
2. Disconnect ICC unit connector.
3. Check connector housing for disconnected, loose, bent, and collapsed terminals.
OK or NG
OK >> GO TO 3.
NG >> Poor connector connection
1. Repair ICC unit connector.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system again.
3. CHECK ICC UNIT SELF-DIAGNOSIS
With CONSULT-II
1. Perform self-diagnosis with CONSULT-II.
2. Check if “DTC 20 CAN COMM CIRCUIT” is indicated.
Is it indicated?
YES >> Refer to ACS-43, "DTC 20 CAN COMM CIRCUIT" .
NO >> Refer to ACS-47, "
DTC 46 OPERATION SW CIRC" .
Symptom 2: ICC System Cannot Be Set (MAIN Switch Turns ON/OFF)AKS00C9A
The ICC cannot be set in the following cases.

When the vehicle speed is not in range of approx. 25 MPH (40 km/h) to 90 MPH (144 km/h).

When the A/T selector lever is in gears other than ‘D’.

While the brake is in operation.
1. CHECK CAUSE OF AUTOMATIC CANCELLATION
With CONSULT-II
With “CAUSE OF AUTO-CANCEL” in “WORK SUPPORT”, check if any cause of cancellation exists.
OK or NG
OK >> Cancel with appropriate cause, and go to specified diagnosis.

“OPE SW VOLT CIRC”: Refer to ACS-47, "DTC 46 OPERATION SW CIRC" .

“VHCL SPD UNMATCH”: Refer to ACS-44, "DTC 41 VHCL SPEED SE CIRC" .

“IGN LOW VOLT”: Refer to ACS-43, "DTC 31 POWER SUPPLY CIR, DTC 34 POWER SUP-
PLY CIR 2" .
NG >> GO TO 2.

ACS-70
[ICC]
TROUBLE DIAGNOSIS FOR SYMPTOMS
Revision: 2005 July 2005 FX
2. CHECK FUNCTION
After adjusting ICC sensor beam aiming, perform ICC system running test. Check that preceding vehicle
detection performance has been improved.
OK or NG
OK >> INSPECTION END
NG >> 1. Replace ICC sensor, and perform laser beam aiming adjustment.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system again.
Symptom 8: The System Does Not Detect the Vehicle Ahead at AllAKS00C9F
1. VISUAL CHECK 1
With ignition switch turned ON (engine not started), check that all indicator lamps in ICC system display are
continuously lit. (Check for a missing segment in preceding vehicle detection display.)
OK or NG
OK >> GO TO 2.
NG >> Check for combination meter. Refer to DI-15, "
Trouble Diagnosis" .
2. VISUAL CHECK 2
Check ICC sensor body window for contamination and foreign materials.
OK or NG
OK >> If any contamination or foreign materials are found, remove them. Perform ICC system running test.
NG >> GO TO 3.
3. VISUAL CHECK 3
Check ICC sensor body window for cracks and scratches.
OK or NG
OK >> GO TO 4.
NG >> 1. Replace ICC sensor, and perform laser beam aiming adjustment.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system again.
4. ADJUST ICC SENSOR
After adjusting ICC sensor beam aiming, perform ICC system running test. Check that preceding vehicle
detection performance has been improved.
OK or NG
OK >> INSPECTION END
NG >> 1. Replace ICC sensor, and perform laser beam aiming adjustment.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system again.

A/T CONTROL SYSTEM AT-33
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Line Pressure ControlACS002LI

When an input torque signal equivalent to the engine drive force is sent from the ECM to the TCM, the
TCM controls the line pressure solenoid.

This line pressure solenoid controls the pressure regulator valve as the signal pressure and adjusts the
pressure of the operating oil discharged from the oil pump to the line pressure most appropriate to the
driving state.
LINE PRESSURE CONTROL IS BASED ON THE TCM LINE PRESSURE CHARACTERISTIC
PATTERN

The TCM has stored in memory a number of patterns for the optimum line pressure characteristic for the
driving state.

In order to obtain the most appropriate line pressure characteristic to meet the current driving state, the
TCM controls the line pressure solenoid current valve and thus controls the line pressure.
Normal Control
Each clutch is adjusted to the necessary pressure to match the
engine drive force.
Back-Up Control (Engine Brake)
When the select operation is performed during driving and the trans-
mission is shifted down, the line pressure is set according to the
vehicle speed.
PCIA0007E
PCIA0008E
PCIA0009E

AT-90
TROUBLE DIAGNOSIS
Revision: 2005 July 2005 FX
CONSULT-II Function (A/T)ACS002M9
CONSUT-II can display each diagnostic item using the diagnostic test models shown following.
FUNCTION
CONSULT-II REFERENCE VALUE
NOTICE:
1. The CONSULT-II electrically displays shift timing and lock-up timing (that is, operation timing of each sole-
noid).
Check for time difference between actual shift timing and the CONSULT-II display. If the difference is
noticeable, mechanical parts (except solenoids, sensors, etc.) may be malfunctioning. Check mechanical
parts using applicable diagnostic procedures.
2. Shift schedule (which implies gear position) displayed on CONSULT-II and that indicated in Service Man- ual may differ slightly. This occurs because of the following reasons:
–Actual shift schedule has more or less tolerance or allowance,
–Shift schedule indicated in Service Manual refers to the point where shifts start, and
–Gear position displayed on CONSULT-II indicates the point where shifts are completed.
3. Display of solenoid valves on CONSULT-II changes at the start of shifting, while gear position is displayed upon completion of shifting (which is computed by TCM).
Diagnostic test mode Function Reference page
Self-diagnostic results Self-diagnostic results can be read and erased quickly. AT- 9 3
Data monitor Input/Output data in the ECU can be read.AT- 9 6
CAN diagnostic support
monitor The results of transmit/receive diagnosis of CAN communication can be read.
AT- 1 0 0
Function test Performed by CONSULT-II instead of a technician to determine whether each system
is “OK” or “NG”. —
DTC work support Select the operating condition to confirm Diagnosis Trouble Codes. AT- 1 0 0
ECU part number ECU part number can be read. —
Item name Condition Display value
(Approx.)
VHCL/S SE·A/T During driving Approximately
matches the speed-
ometer reading.
VHCL/S SE·MTR
ACCELE POSI Released accelerator pedal. 0.0/8
Fully depressed accelerator pedal. 8/8
CLSD THL POS Released accelerator pedal. ON
Fully depressed accelerator pedal. OFF
W/O THL POS Fully depressed accelerator pedal. ON
Released accelerator pedal. OFF
BRAKE SW Depressed brake pedal. ON
Released brake pedal. OFF
ENGINE SPEED Engine running Closely matches the
tachometer reading.
TURBINE REV During driving (lock-up ON) Approximately
matches the engine
speed.
ATF TEMP SE 1 0 °C (32 ° F) - 20 °C (68 °F) - 80 °C (176 °F) 3.3 - 2.7 - 0.9 V
ATF TEMP SE 2 3.3 - 2.5 - 0.7 V
TCC SOLENOID When performing slip lock-up 0.2 - 0.4 A
When performing lock-up 0.4 - 0.6 A
LINE PRES SOL During driving 0.2 - 0.6 A

AT-118
DTC P0720 VEHICLE SPEED SENSOR A/T (REVOLUTION SENSOR)
Revision: 2005 July 2005 FX
DTC P0720 VEHICLE SPEED SENSOR A/T (REVOLUTION SENSOR)PFP:32702
DescriptionACS002MQ
The revolution sensor detects the revolution of the idler gear parking pawl lock gear and emits a pulse signal.
The pulse signal is sent to the TCM which converts it into vehicle speed.
CONSULT-II Reference ValueACS003K4
On Board Diagnosis LogicACS002MR

This is an OBD-II self-diagnostic item.

Diagnostic trouble code “P0720 VEH SPD SEN/CIR AT” with CONSULT-II or 1st judgement flicker without
CONSULT-II is detected under the following conditions.
–When TCM does not receive the proper voltage signal from the sensor.
–After ignition switch is turned ON, irregular signal input from vehicle speed sensor MTR before the vehicle
starts moving.
Possible CauseACS002MS

Harness or connectors
(Sensor circuit is open or shorted.)

Revolution sensor

Vehicle speed sensor MTR
DTC Confirmation ProcedureACS002MT
CAUTION:

Always drive vehicle at a safe speed.

Be careful not to rev engine into the red zone on the tachometer.
NOTE:
If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch OFF and
wait at least 10 seconds before performing the next test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-II
1. Turn ignition switch ON. (Do not start engine.)
2. Select “ECU INPUT SIGNALS” in “DATA MONITOR” mode for “A/T” with CONSULT-II.
3. Touch “START”.
4. Drive vehicle and check for an increase of “VHCL/S SE·A/T” value in response to “VHCL/S SE·MTR” value.
If the check result is NG, go to AT- 1 2 1 , "
Diagnostic Procedure" .
If the check result is OK, go to following step.
5. Select “DATA MONITOR” mode for “A/T” with CONSULT-II.
6. Start engine and maintain the following conditions for at least 5 consecutive seconds.
VHCL SPEED SE: 30 km/h (19 MPH) or more
THRTL POS SEN: More than 1.0/8
Selector lever: “D” position
Driving location: Driving the vehicle uphill (increased engine load) will help maintain the driving
conditions required for this test.
If the check result is NG, go to AT- 1 2 1 , "
Diagnostic Procedure" .
If the check result is OK, go to following step.
7. Maintain the following conditions for at least 5 consecutive seconds. ENGINE SPEED: 3,500 rpm or more
THRTL POS SEN: More than 1.0/8
Selector lever: “D” position
Item name Condition Display value (km/h)
VHCL/S SE·A/T During driving Approximately matches the speedometer reading.
BCIA0031E

DTC P0720 VEHICLE SPEED SENSOR A/T (REVOLUTION SENSOR) AT-121
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Diagnostic ProcedureACS002MU
1. CHECK INPUT SIGNAL
With CONSULT-II
1. Turn ignition switch ON. (Do not start engine.)
2. Select “ECU INPUT SIGNALS” in “DATA MONITOR” mode for “A/T” with CONSULT-II.
3. Start engine.
4. Read out the value of “VHCL/S SE·A/T” while driving. Check the value changes according to driving speed.
OK or NG
OK >> GO TO 6.
NG >> GO TO 2.
2. CHECK TCM POWER SUPPLY AND GROUND CIRCUIT
Check TCM power supply and ground circuit. Refer to AT- 1 8 3 , "
MAIN POWER SUPPLY AND GROUND CIR-
CUIT" .
OK or NG
OK >> GO TO 3.
NG >> Repair or replace damaged parts.
3. DETECT MALFUNCTIONING ITEM
Check the following.

The A/T assembly harness connector pin terminals for damage or loose connection with harness connec-
tor.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace damaged parts.
Item name Condition Display value (km/h)
VHCL/S SE·A/T During driving Approximately matches
the speedometer reading.
SCIA2148E

DTC P0725 ENGINE SPEED SIGNAL AT-123
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DTC P0725 ENGINE SPEED SIGNALPFP:24825
DescriptionACS002MV
The engine speed signal is sent from the ECM to the TCM.
CONSULT-II Reference ValueACS003K5
On Board Diagnosis LogicACS002MW

This is an OBD-II self-diagnostic item.

Diagnostic trouble code “P0725* ENGINE SPEED SIG” with CONSULT-II or 16th judgement flicker with-
out CONSULT-II is detected when TCM does not receive the ignition signal from ECM during engine
cranking or running.
*: For VQ35DE engine.
Possible CauseACS002MX

Harness or connectors
(ECM to TCM circuit is open or shorted.)
DTC Confirmation ProcedureACS002MY
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch “OFF”
and wait at least 10 seconds before performing the next test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-II
1. Turn ignition switch ON. (Do not start engine.)
2. Select “MAIN SIGNALS“ in “DATA MONITOR” mode for “A/T” with CONSULT-II.
3. Start engine and maintain the following conditions for at least 10 consecutive seconds.
VHCL SPEED SE: 10 km/h (6 MPH) or more
ACCELE POSI: More than 1.0/8
Selector lever: “D” position
4. If DTC is detected, go to AT- 1 2 4 , "
Diagnostic Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-II”.
Item name Condition Display value (rpm)
ENGINE SPEED Engine running Closely matches the tachometer reading.
BCIA0031E