2005 INFINITI QX4 parking brake

-1QUICK 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 & MirrorsRFRoofEIExterior & InteriorIPInstrument PanelSESeatAPAdjustable PedalJAIR CONDITIONERATCAutomatic Air ConditionerKELECTRICALSCStarting & Charging SystemLTLighting SystemDIDriver Information SystemWWWiper, Washer & HornBCSBody Control SystemLANLAN SystemAVAudio Visual, Navigation & Telephone SystemACSAuto Cruise Control SystemPGPower Supply, Ground & Circuit ElementsLMAINTENANCEMAMaintenanceMINDEXIDXAlphabetical IndexEdition: October 2004
Revision: October 2005BDACEFGHIJKLM

ACS-2Revision: October 20052005 QX56 DTC 92 ECM CIRCUIT ........................................... 48
DTC 96 NP RANGE ............................................... 48
DTC 97 AT CIRCUIT .............................................. 49
DTC 98 GEAR POSITION ...................................... 49
DTC 102 LASER STAIN ......................................... 50
DTC 103 LASER SENSOR FAIL ............................ 51
DTC 104 LASER AIMING INCMP .......................... 51
DTC 107 LASER COMM FAIL ................................ 51
DTC 109 LASER HIGH TEMP ............................... 52
TROUBLE DIAGNOSIS FOR SYMPTOMS .............. 53
Symptom Chart ....................................................... 53
Symptom 1: ON/OFF Switch Does Not Switch ON*
1
, ON/OFF Switch Does Not Switch OFF*
2 .............. 54
Symptom 2: The ICC System Cannot Be Set (ON/
OFF Switch Turns On/Off) ...................................... 54
Symptom 3: The ICC System Cannot Be Operated
by the CANCEL Switch, ACCEL/RES Switch, or
DISTANCE Switch .................................................. 55Symptom 4: The ICC System Is Not Cancelled
When the Gear Is in ‘N’ ...........................................56
Symptom 5: Chime Does Not Sound ......................56
Symptom 6: Driving Force Is Hunting .....................57
Symptom 7: The ICC System Frequently Cannot
Detect the Vehicle Ahead/The Detection Zone is
Short .......................................................................57
Symptom 8: The System Does Not Detect the Vehi-
cle Ahead at All .......................................................57
ELECTRICAL COMPONENT INSPECTION .............59
ICC Steering Switch ................................................59
ICC Brake Switch and Stop Lamp Switch ...............59
Parking Brake Switch ..............................................59
REMOVAL AND INSTALLATION ..............................60
ICC Unit ..................................................................60
ICC Sensor .............................................................60
ICC Steering Switch ................................................60

ACS-12
[ICC]
LASER BEAM AIMING ADJUSTMENT
Revision: October 20052005 QX56
LASER BEAM AIMING ADJUSTMENTPFP:00026
Outline of Laser Beam Aiming Adjustment ProcedureEKS00BLN
CAUTION:

The laser beam aiming adjustment cannot be performed without CONSULT-II.

The laser beam aiming adjustment must be performed every time the ICC sensor is removed,
installed or has been moved as a result of a collision.
1. Prepare the vehicle and the work area.
2. Set up the ICC target board.
3. Adjust the sensor following the procedure on CONSULT-II.
4. Check system operation after the adjustment.
PreparationEKS00BLO

Place the vehicle on level ground. Shift the transmission into "P" position and release the parking brake.

Adjust the tire pressure to the specified value.

See that there is no load in the vehicle. Coolant, engine oil and fuel should be filled to correct level.

Check that the vehicle suspension has been adjusted to the standard height by the load leveling rear air
suspension system. Refer to RSU-12, "
Basic Inspection" .

Clean the sensor with a soft cloth.
Setting up the ICC Target BoardEKS00BLP
CAUTION:
Accuracy in setting up the ICC target board is essential for the laser beam aiming adjustment.
ADJUSTING HEIGHT OF THE TARGET
1. Attach a triangle scale as shown.Tool number : KV99110100 (J-45718)
LKIA0632E
WKIA1849E

ACS-24
[ICC]
TERMINALS AND REFERENCE VALUE
Revision: October 20052005 QX56
TERMINALS AND REFERENCE VALUEPFP:00000
Terminals and Reference Values for ICC UnitEKS00BLU
Terminals and Reference Values for ICC SensorEKS00BLV
Te r m i n a lWire
colorItemCondition
Voltage (V)
(Approx.) Ignition
switchOperation
1W/L
Battery power supply OFF — Battery voltage
2W/L
5 P CAN-L — — —
7 B/R N-P RANGE ON A/T selector lever in "P" or "N" Battery voltage
10 V/R Brake booster signal ON —
14 L CAN-H — — —
19 B
Ground
ON——
20 B
29 BR/WICC brake switch
(normally closed)Selector
lever: Not in
“N” or “P”
positionDepress the brake
pedal0
Release the brake
pedalBattery voltage
30 L DDL-TX — — —
33 R/B Ignition switch power supply ON —
Battery voltage
38 R/GStop lamp switch
(normally open) OFFDepress the brake pedal
Release the brake pedal 0
39 V/W DDL-RX — — —
40 G Parking brake signal
ONParking brake is ON 0
Parking brake is OFF Battery voltage
42 R/B Ignition switch power supply — Battery voltage
46 B Ground — —
47 BR Stop lamp drive output signalBrake operating with ICC system Battery voltage
Brake not operating with ICC
system0
SKIA1243E
Te r m i n a lWire
colorItemCondition
Voltage (V)
Ignition
switchOperation
1 R/B Ignition switch power supply
ON— Battery voltage
2 L CAN-H — —
3 P CAN-L — —
4 B Ground — —

TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
ACS-27
[ICC]
C
D
E
F
G
H
I
J
L
MA
B
ACS
Revision: October 20052005 QX56
6. Touch “WORK SUPPORT”, “SELF-DIAG RESULTS”, “DATA
MONITOR”, "CAN DIAG SUPPORT MNTR", “ACTIVE TEST” or
“ECU PART NUMBER” on selection screen.
WORK SUPPORT
Work Item
Cause of Auto-Cancel
1. Touch “WORK SUPPORT” on "SELECT DIAG MODE" screen.
2. Touch “CAUSE OF AUTO-CANCEL” on "SELECT WORK ITEM"
screen.
3. Cause of automatic cancellation screen will be shown.
4. The last five causes of automatic cancellation of ICC system will
be displayed.
Possible Causes of "Auto-Cancel"
Laser Beam Adjust
For details, refer to ACS-12, "LASER BEAM AIMING ADJUSTMENT" .
BCIA0031E
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.
ECM CIRCUIT ECM did not permit ICC operation.
OPE SW VOLT CIRC Voltage outside the standard was detected.
LASER SUN BEAM Intense light such as sunlight entered ICC sensor light sensing part.
LASER TEMP Temperature around ICC sensor became low.
WHL SPD ELEC NOISE Wheel speed sensor signal caught electromagnetic noise.
OP SW DOUBLE TOUCH ICC steering switches were pressed at the same time.
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.
NO RECORD—

ELECTRICAL COMPONENT INSPECTION
ACS-59
[ICC]
C
D
E
F
G
H
I
J
L
MA
B
ACS
Revision: October 20052005 QX56
ELECTRICAL COMPONENT INSPECTIONPFP:00000
ICC Steering SwitchEKS00BMS
1. Disconnect ICC steering switch.
2. Check resistance between terminals 14 and 15 while depressing
each switch.
ICC Brake Switch and Stop Lamp SwitchEKS00BMT
Check each switch after adjusting brake pedal. Refer to BR-6,
"BRAKE PEDAL" .
Parking Brake SwitchEKS00BMU
Switch ConditionResistance [Ω]
(Approx.)
ON/OFF Depressed 0
Released 5,456
DISTANCE Depressed 741
Released 5,456
ACCEL/RES Depressed 2,586
Released 5,456
COAST/SET Depressed 1,406
Released 5,456
CANCEL Depressed 309
Released 5,456
WKIA1916E
Continuity
ICC brake switch Stop lamp switch
When brake pedal is depressed No Yes
When brake pedal is released Yes No
WKIA3405E
Continuity to ground
Parking brake pedal depressed Yes
Parking brake pedal released No
WKIA1918E

AT-18
A/T CONTROL SYSTEM
Revision: October 20052005 QX56
Shift MechanismECS00CDV
The automatic transmission uses compact triple planetary gear systems to improve power-transmission effi-
ciency, simplify construction and reduce weight.
It also employs an optimum shift control and super wide gear ratios. They improve starting performance and
acceleration during medium and high-speed operation.
CONSTRUCTION
FUNCTION OF CLUTCH AND BRAKE
1. Front brake 2. Input clutch 3. Direct clutch
4. High and low reverse clutch 5. Reverse brake 6. Forward brake
7. Low coast brake 8. 1st one-way clutch 9. Forward one-way clutch
10. 3rd one-way clutch 11. Front sun gear 12. Input shaft
13. Mid internal gear 14. Front internal gear 15. Rear carrier
16. Rear sun gear 17. Mid sun gear 18. Front carrier
19. Mid carrier 20. Rear internal gear 21. Output shaft
22. Parking gear 23. Parking pawl
PCIA0002J
Name of the Part Abbreviation Function
Front brake (1) FR/B Fastens the front sun gear (11).
Input clutch (2) I/CConnects the input shaft (12), the front internal gear (14) and the mid internal
gear (13).
Direct clutch (3) D/C Connects the rear carrier (15) and the rear sun gear (16).
High and low reverse clutch (4) HLR/C Connects the mid sun gear (17) and the rear sun gear (16).
Reverse brake (5) R/B Fastens the rear carrier (15).
Forward brake (6) Fwd/B Fastens the mid sun gear (17).
Low coast brake (7) LC/B Fastens the mid sun gear (17).
1st one-way clutch (8) 1st OWCAllows the rear sun gear (16) to turn freely forward relative to the mid sun gear
(17) but fastens it for reverse rotation.
Forward one-way clutch (9) Fwd OWCAllows the mid sun gear (17) to turn freely in the forward direction but fastens it
for reverse rotation.
3rd one-way clutch (10) 3rd OWCAllows the front sun gear (11) to turn freely in the forward direction but fastens
it for reverse rotation.

AT-20
A/T CONTROL SYSTEM
Revision: October 20052005 QX56
POWER TRANSMISSION
“N” Position
Since both the forward brake and the reverse brake are released, torque from the input shaft drive is not trans-
mitted to the output shaft.
“P” Position

The same as for the “N” position, both the forward brake and the reverse brake are released, so torque
from the input shaft drive is not transmitted to the output shaft.

The parking pawl linked with the select lever meshes with the parking gear and fastens the output shaft
mechanically.
SCIA5642E
1. Front brake 2. Input clutch 3. Direct clutch
4. High and low reverse clutch 5. Reverse brake 6. Forward brake
7. Low coast brake 8. 1st one-way clutch 9. Forward one-way clutch
10. 3rd one-way clutch 11. Front sun gear 12. Input shaft
13. Mid internal gear 14. Front internal gear 15. Rear carrier
16. Rear sun gear 17. Mid sun gear 18. Front carrier
19. Mid carrier 20. Rear internal gear 21. Output shaft
22. Parking gear 23. Parking pawl
PCIA0003J