AT-400
[ALL]
A/T SHIFT LOCK SYSTEM
Diagnostic ProcedureECS00408
SYMPTOM 1:
Selector lever cannot be moved from “P” position with key in ON position and brake pedal
applied.
Selector lever can be moved from “P” position with key in ON position and brake pedal released.
Selector lever can be moved from “P” position when key is removed from key cylinder.
SYMPTOM 2:
Ignition key cannot be removed when selector lever is set to “P” position.
Ignition key can be removed when selector lever is set to any position except “P”.
1. CHECK KEY INTERLOCK CABLE
Check key interlock cable for damage.
OK or NG
OK >> GO TO 2.
NG >> Repair key interlock cable. Refer to AT- 4 0 2 , "
KEY INTERLOCK CABLE" .
2. CHECK SELECTOR LEVER POSITION
Check selector lever position for damage.
OK or NG
OK >> GO TO 3.
NG >> Check selector lever. Refer to AT- 4 0 9 , "
PARK/NEUTRAL POSITION (PNP) SWITCH ADJUST-
MENT" .
3. CHECK SHIFT LOCK SOLENOID AND PARK POSITION SWITCH
1. Turn ignition switch to ON. (Do not start engine.)
2. Selector lever is set in P position.
3. Check operation sound.
OK or NG
OK >>INSPECTION END
NG >> GO TO 4.
4. CHECK POWER SOURCE
1. Turn ignition switch to ON. (Do not start engine.)
2. Check voltage between A/T device harness connector M58 ter-
minal 5 (P) and ground.
OK or NG
OK >> GO TO 7.
NG >> GO TO 5.
Condition Brake pedal Operation sound
When ignition switch is turned to
“ON” position and selector lever
is set in “P” position.Depressed Yes
Released No
Voltage:
Brake pedal depressed:
Battery voltage
Brake pedal released:
0V
SCIA5337E
A/T SHIFT LOCK SYSTEM
AT-401
[ALL]
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5. CHECK STOP LAMP SWITCH
1. Turn ignition switch to OFF.
2. Disconnect stop lamp switch harness connector.
3. Check continuity between stop lamp switch harness connector M12 terminals 3 (G) and 4 (P).
Check stop lamp switch after adjusting brake pedal — refer to BR-6, "
BRAKE PEDAL" .
OK or NG
OK >> GO TO 6.
NG >> Repair or replace damaged parts.
6. DETECT MALFUNCTIONING ITEM
Check the following items. If any items are damaged, repair or replace damaged parts.
1. Harness for short or open between battery and stop lamp switch harness connector 3 (G)
2. Harness for short or open between stop lamp switch harness connector 4 (P) and A/T device harness
connector 5 (P)
3. 15A fuse [No.22, located in the fuse block (J/B)]
4. Ignition switch (Refer to PG-2, "
POWER SUPPLY ROUTING" .)
OK or NG
OK >>INSPECTION END
NG >> Repair or replace damaged parts.
7. CHECK GROUND CIRCUIT
1. Turn ignition switch to OFF.
2. Disconnect A/T device harness connector.
3. Check continuity between A/T device harness connector M58
terminal 6 (B) and ground.
4. Connect A/T device harness connector.
OK or NG
OK >> Replace shift lock solenoid or park position switch.
NG >> Repair open circuit or short to ground or short to power
in harness or connectors.
SCIA1796E
Continuity should exist.
SCIA4284E
KEY INTERLOCK CABLE
AT-403
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2. Remove lock plate from steering lock assembly and remove key
interlock cable.
InstallationECS0040B
1. Turn ignition key to lock position.
2. Set A/T selector lever to P position.
3. Set key interlock cable to steering lock assembly and install lock
plate.
4. Clamp cable to steering column and fix to control cable with
band.
5. Insert interlock rod into adjuster holder.
6. Install casing cap to bracket.
7. Move slider in order to fix adjuster holder to interlock rod.
SAT854J
SAT854J
SAT804E
SAT805E
TF-2 Engine Control Signal ............................................. 44
DIAGNOSTIC PROCEDURE .............................. 44
CAN Communication Line ...................................... 45
DIAGNOSTIC PROCEDURE .............................. 45
TROUBLE DIAGNOSIS FOR SYMPTOMS .............. 46
4WD Indicator Lamp and LOCK Indicator Lamp Do
Not Turn ON for Approx. 1 Second When The Igni-
tion Switch Is Turned to ON .................................... 46
DIAGNOSTIC PROCEDURE .............................. 46
4WD Warning Lamp Does Not Turn ON When The
Ignition Switch Is Turned to ON .............................. 47
DIAGNOSTIC PROCEDURE .............................. 47
4WD Warning Lamp Does Not Turn OFF Several
Seconds after Engine Started ................................. 48
DIAGNOSTIC PROCEDURE .............................. 48
4WD Mode Cannot Be Switched after Engine Is
Started .................................................................... 49
DIAGNOSTIC PROCEDURE .............................. 49
Heavy Tight-Corner Braking Symptom Occurs
When the Vehicle Is Driven in AUTO Mode and the
Steering Wheel Is Turned Fully to Either Side after
the Engine Is Started .............................................. 50
DIAGNOSTIC PROCEDURE .............................. 50
Vehicle Does Not Enter 4WD Mode Even Though
4WD Warning Lamp Turned to OFF ....................... 51
DIAGNOSTIC PROCEDURE .............................. 52
While Driving, 4WD Warning Lamp Flashes Rapidly
(When Flashing in Approx. 1 Minute and Then Turn-
ing OFF) ................................................................. 52
While Driving, 4WD Warning Lamp Flashes Slowly
(When Continuing to Flash until Turning Ignition
Switch OFF) ............................................................ 53
DIAGNOSTIC PROCEDURE .............................. 534WD CONTROL UNIT ............................................... 54
Removal and Installation ......................................... 54
REMOVAL ............................................................ 54
INSTALLATION .................................................... 54
SIDE OIL SEAL ......................................................... 55
Removal and Installation ......................................... 55
REMOVAL ............................................................ 55
INSTALLATION .................................................... 55
AIR BREATHER HOSE ............................................. 56
Components ............................................................ 56
Removal and Installation ......................................... 56
TRANSFER ASSEMBLY ........................................... 57
Removal and Installation ......................................... 57
COMPONENTS ................................................... 57
REMOVAL ............................................................ 57
INSTALLATION .................................................... 58
Disassembly and Assembly .................................... 59
COMPONENTS ................................................... 59
ASSEMBLY INSPECTION ................................... 60
DISASSEMBLY .................................................... 64
INSPECTION AFTER DISASSEMBLY ................ 68
SELECTING ADJUSTING SHIMS ....................... 69
ASSEMBLY .......................................................... 70
SERVICE DATA AND SPECIFICATIONS (SDS) ...... 76
General Specifications ............................................ 76
Inspection and Adjustment ...................................... 76
PRELOAD TORQUE BEFORE DISASSEMBLY ... 76
PRELOAD TORQUE AFTER DISASSEMBLY
AND REASSEMBLY ............................................ 76
BACKLASH .......................................................... 76
COMPANION FLANGE RUNOUT ....................... 76
SELECTIVE PARTS ............................................ 76
PRECAUTIONS
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PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
EDS001W1
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. Information necessary to service the system safely is included in the SRS and SB section of
this Service Manual.
WARNING:
To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be per-
formed by an authorized NISSAN/INFINITI dealer.
Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section.
Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors.
PrecautionsEDS001V6
Before connecting or disconnecting the 4WD control unit
harness connector, turn ignition switch “OFF” and discon-
nect battery ground cable. Because battery voltage is
applied to 4WD control unit even if ignition switch is turned
“OFF”.
When connecting or disconnecting pin connectors into or
from 4WD control unit, take care not to damage pin termi-
nals (bend or break).
When connecting pin connectors, make sure that there are
no bends or breaks on 4WD control unit pin terminal.
Before replacing 4WD control unit, perform 4WD control
unit input/output signal inspection and make sure whether
4WD control unit functions properly or not. Refer to TF-30,
"4WD Control Unit Input/Output Signal Reference Values" .
SEF289H
SEF291H
SDIA1848E
TF-12
ALL MODE 4X4 SYSTEM
4WD MODE SWITCH
AUTO Mode
Electronic control allows optimal distribution of torque to front/rear wheels to match road conditions.
4WD mode makes possible stable driving, with no wheel spin, on snowy roads or other slippery surfaces.
On roads which do not require 4WD, AUTO mode contributes to improved fuel economy by driving in con-
ditions close to front-wheel drive.
Sensor inputs determine the vehicle's turning condition, and tight cornering/braking are controlled by dis-
tributing optimum torque to rear wheels.
LOCK Mode
Front/rear wheel torque distribution is fixed, ensuring stable driving when climbing slopes.
Vehicle will switch automatically to AUTO mode if vehicle speed increases. If vehicle speed then
decreases, the vehicle automatically returns to direct 4-wheel driving conditions.
LOCK mode will change to AUTO mode automatically, when the vehicle speed exceeds approx. 30 km/h
(19 MPH). The LOCK indicator light keeps illuminating.
NOTE:
If there is a significant difference in pressure or wear between tires, full vehicle performance is not available.
LOCK mode may be prohibited, or speeds at which LOCK mode is enabled may be restricted detecting tire
conditions.
2WD Mode
Vehicle is in front-wheel drive.
NOTE:
If front wheels are slipping in 2WD mode, do not switch to AUTO or LOCK. This can cause difficulties for
the system.
Even if the 4WD mode switch is in 2WD mode, the 4WD control unit occasionally automatically change to
AUTO mode depending on the driving condition (For example; Depressing the acceleration firmly). This is
not malfunction. However, 4WD indicator lamp dose not illuminate.
4WD INDICATOR LAMP AND LOCK INDICATOR LAMP
The following is the indications of indicator lamp.
4WD WARNING LAMP
Turns ON when there is a malfunction in 4WD system. It indicates that the vehicle is in fail-safe mode and
change to front-wheel drive or shifting driving force-4WD (Rear-wheels still have some driving torque).
Also turns ON when ignition switch is turned ON, for purpose of lamp check. Turns OFF approximately for 1
seconds after the engine starts if system is normal.
4WD Warning Lamp Indication
Condition 4WD indicator lamp LOCK indicator lamp
AUTO mode ON OFF
LOCK mode ON ON
2WD mode OFF OFF
Lamp check Turns ON for approx. 1 second when ignition switch is turned ON.
SDIA2298E
Condition 4WD warning lamp
Lamp checkTurns ON when ignition switch is turned ON. Turns OFF
approx. 1 seconds after engine start.
4WD system malfunctionON
Protection function is activated due to heavy load to electric con-
trolled coupling. (4WD system is not malfunctioning and 4WD system
changes to 2WD mode.)Rapid flashing: 2 times/second
(Flashing in approx. 1 minute and then turning OFF.)
ALL MODE 4X4 SYSTEM
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System DiagramEDS001VC
Large difference in diameter of front/rear tiresSlow flashing: 1 time/2 seconds
(Continuing to flash until turning ignition switch OFF)
Other than above (system normal) OFFCondition 4WD warning lamp
SDIA1866E
TROUBLE DIAGNOSIS
TF-29
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Trouble Diagnosis Chart for SymptomsEDS001VJ
If 4WD warning lamp turns ON, perform self-diagnosis. Refer to TF-32, "SELF-DIAG RESULT MODE" .
NOTE:
Light tight-corner braking symptom may occur depending on driving conditions in AUTO mode. This is not malfunction.
Heavy tight-corner braking symptom occurs when vehicle is driven in the following conditions: LOCK mode, steering
wheel is turned fully to either sides, and accelerator pedal was depressed.Symptom Condition Check item Reference page
4WD indicator lamp and LOCK indicator
lamp do not turn ON for approx. 1 second
when the ignition switch is turned to ON.
(4WD indicator lamp and LOCK indicator
lamp check)Ignition switch: ONCAN communication line
TF-46
Power supply and ground for 4WD con-
trol unit
Unified meter control unit
4WD warning lamp does not turn ON when
the ignition switch is turned to ON.
(4WD warning lamp check)Ignition switch: ONCAN communication line
TF-47
Unified meter control unit
4WD warning lamp does not turn OFF sev-
eral seconds after engine started.Engine runningCAN communication line
TF-48
Power supply and ground for 4WD con-
trol unit
Unified meter control unit
4WD solenoid
4WD actuator relay (integrated in 4WD
control unit)
Wheel sensor
4WD mode cannot be switched after engine
is started.Engine running4WD mode switch
TF-49
CAN communication line
Unified meter control unit
Heavy tight-corner braking symptom occurs
when the vehicle is driven in AUTO mode
and the steering wheel is turned fully to
either side after the engine is started. (See
NOTE.)
While driving
AUTO mode
Steering wheel is
turned fully to either
sidesCAN communication line
TF-50
4WD mode switch
Accelerator pedal position signal
4WD solenoid
Mechanical malfunction of electric con-
trolled coupling (clutch sticking etc.)
Vehicle does not enter 4WD mode even
though 4WD warning lamp turned to OFF.Vehicle speed: 10 km/h
(6 MPH) or less4WD solenoid
TF-51
Mechanical malfunction of electric con-
trolled coupling (Mechanical engage-
ment of clutch is not possible.)
Vehicle speed: 10 km/h
(6 MPH) or moreOperating condition of parking brake
4WD solenoid
Mechanical malfunction of electric con-
trolled coupling (Mechanical engage-
ment of clutch is not possible.)
While driving, 4WD warning lamp flashes
rapidly. (When flashing in approx. 1 minute
and then turning OFF.)
Rapid flashing: 2 times/second
While driving
AUTO mode and
LOCK modeProtection function is activated due to
heavy load to electric controlled cou-
pling. (4WD system is not malfunction-
ing.)TF-52
While driving, 4WD warning lamp flashes
slowly. (When continuing to flash until turn-
ing ignition switch OFF)
Slow flashing: 1 time/2 secondsWhile driving
Vehicle speed: 20 km/h
(12 MPH) or moreTire size is different between front and
rear of vehicle.TF-53