Transfer Case ATX14B: Other Nissan Armada I рестайлинг

DETAILED FLOW

1. CUSTOMER INFORMATION Interview the customer to obtain detailed information about the symptom. GO TO 2
2. PRELIMINARY CHECK Perform preliminary check. Refer to " «PRELIMINARY CHECK»(ref-382185-S14363516102011011400000) ". GO TO 3
3. SELF-DIAGNOSIS Perform self-diagnosis. Refer to " «CONSULT-III FUNCTION (ALL MODE AWD/4WD)»(ref-382185-S21568029572011011400000) ". GO TO 4
4. SYMPTOM Check for symptoms. Refer to " «SYMPTOM TABLE»(ref-382185-S36818497462011011400000) ". GO TO 5
5. MALFUNCTIONING PARTS Repair or replace the applicable parts. GO TO 6
6. SYSTEM OPERATION Check system operation. GO TO 7
7. SELF-DIAGNOSIS Perform self-diagnosis. Are any DTC's displayed? YES: GO TO 5 NO: Inspection End

CHECK BEFORE ENGINE IS STARTED

1. CHECK 4WD SHIFT INDICATOR LAMP Park vehicle on flat surface. Turn ignition switch to OFF position. Move A/T selector lever to P position. Set 4WD shift switch to 2WD position. Turn ignition switch to ON position. (Do not start engine.) Does 4WD shift indicator lamp turn ON for approximately 1 second? YES: GO TO 2 . NO: GO TO " «DIAGNOSIS PROCEDURE»(ref-382185-S34808978902011011400000) ".
2. CHECK 4WD WARNING LAMP Turn ignition switch to OFF position. Move A/T selector lever to P position. Set 4WD shift switch to 2WD position. Turn ignition switch to ON position. (Do not start engine.) Does 4WD warning lamp turn ON? YES: GO TO «CHECK AT IDLE»(ref-382185-S05454136672011011400000) . NO: GO TO " «DIAGNOSIS PROCEDURE»(ref-382185-S35999271742011011400000) ".

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1. CHECK 4WD SHIFT INDICATOR LAMP Park vehicle on flat surface and engage the parking brake. Turn ignition switch to OFF position. Move A/T selector lever to P position. Set 4WD shift switch to 2WD position. Start engine. Does 4WD shift indicator lamp turn ON? YES: GO TO 3 . NO: GO TO 2 .
2. CHECK 4WD WARNING LAMP Check 4WD warning lamp state. Is 4WD warning lamp turned ON? YES: Perform the self-diagnosis. Refer to " «CONSULT-III FUNCTION (ALL MODE AWD/4WD)»(ref-382185-S21568029572011011400000) ". NO: Refer to " «DIAGNOSIS PROCEDURE»(ref-382185-S20010474732011011400000) ".
3. CHECK 4WD SHIFT INDICATOR AND 4LO INDICATOR OPERATION Brake pedal depressed. Move A/T selector lever to N position. Set 4WD shift switch to 2WD, AUTO, 4H, 4LO, 4H, AUTO and 2WD in order. (Stay at each switch position for at least 1 second.) Do 4WD shift indicator and 4LO indicator lamps change properly? Does buzzer sound? YES: GO TO «CRUISE TEST»(ref-382185-S23914964302011011400000) . NO: GO TO " «DIAGNOSIS PROCEDURE»(ref-382185-S20010474732011011400000) ".

TRANSFER CONTROL UNIT

1. Transfer control unit controls transfer control device and it directs shifts from 4H-4LO and 2WD-4WD.
2. Self-diagnosis can be done.

TRANSFER SHIFT HIGH AND LOW RELAYS

Transfer shift high and low relays apply power supply to transfer control device (actuator motor).

TRANSFER SHUT OFF RELAY

Transfer shut off relay applies power supply to transfer motor relay.

4WD SHIFT SWITCH AND INDICATOR LAMPS

4WD Shift Switch

Able to select from 2WD, AUTO, 4H or 4LO.

4WD Shift Indicator Lamp

1. Displays driving conditions selected by 4WD shift switch with 2WD, AUTO and 4H indicators while engine is running. (When 4WD warning lamp is turned on, all 4WD shift indicator lamps are turned off.)
2. Turns ON for approximately 1 second when ignition switch is turned ON, for purpose of lamp check.

4LO Indicator Lamp

1. Displays 4LO condition while engine is running. 4LO indicator lamp flashes if transfer gear does not shift completely under 2WD, AUTO, 4H<=>4LO. (When 4WD warning lamp is turned on, 4LO indicator lamp is turned off.)
2. Turns ON for approximately 1 second when ignition switch is turned ON, for purpose of lamp check.

4WD WARNING LAMP

Turns on or flashes when there is a malfunction in 4WD system.

Also turns on when ignition switch is turned ON, for purpose of lamp check. Turns OFF approximately 1 second after the engine starts if system is normal.

4WD Warning Lamp Indication

4WD WARNING LAMP INDICATION CHART

ATP WARNING LAMP

When the A/T selector lever is in P position, the vehicle may move if the transfer case is in neutral. ATP warning lamp is turned on to indicate this condition to the driver.

LINE PRESSURE SWITCH

1. With the transfer system design, control of the oil pressure provides the transmission of drive torque to the front wheels. The main pressure to control the oil pressure is referred to as the line pressure.
2. The line pressure switch determines whether or not adequate line pressure has built up under different operating conditions.
3. The line pressure switch closes when line pressure is produced.
4. The line pressure switch senses line pressure abnormalities and turns the 4WD warning lamp ON.

CLUTCH PRESSURE SWITCH

1. The clutch pressure switch determines whether or not adequate clutch pressure has built up under different operating conditions.
2. The clutch pressure switch closes when clutch pressure is produced.
3. The clutch pressure switch senses clutch pressure abnormalities and turns the 4WD warning lamp ON.

WAIT DETECTION SWITCH

1. The wait detection switch operates when there is circulating torque produced in the propeller shaft (L-->H) or when there is a phase difference between 2-4 sleeve and clutch drum (H-->L). After the release of the circulating torque, the wait detection switch helps provide the 4WD lock gear (clutch drum) shifts. A difference may occur between the operation of the 4WD shift switch and actual drive mode. At this point, the wait detection switch senses an actual drive mode.
2. The wait detection switch operates as follows. 4WD lock gear (clutch drum) locked: ON 4WD lock gear (clutch drum) released: OFF
3. The wait detection switch senses an actual drive mode and the 4WD shift indicator lamp indicates the vehicle drive mode.

ATP SWITCH

ATP switch detects if transfer case is in neutral by the position of the L-H shift fork.

Note. Transfer case may be in neutral when shifting between 4H-4LO.

NEUTRAL-4LO SWITCH

The neutral-4LO switch detects that transfer gear is in neutral or 4LO (or shifting from neutral to 4LO) condition by L-H shift fork position.

TRANSFER MOTOR

1. The transfer motor drives the sub-oil pump to provide proper lubrication and oil pressure control when the vehicle is at standstill, during low-speed operations or is being driven in reverse.
2. The main oil pump is operated by the driving force of the mainshaft. In other words, sufficient oil pressure buildup does not occur when the vehicle is at standstill or during low-speed operations. While the vehicle is being driven in reverse, the main oil pump rotates in the reverse direction. Therefore the main oil pump does not discharge oil pressure. During any of the above vehicle operations, the transfer motor drives the sub-oil pump to compensate for insufficient oil pressure.
3. The transfer motor operates as follows: The motor relay turns OFF in the 2WD mode. The motor relay operates as described in the table below in modes other than the 2WD mode.
4. 4WD shift switch, transmission range switch, Neutral-4LO switch, vehicle speed sensor and throttle position sensor are used in conjunction with the transfer motor.

Transfer Motor Relay Operation

TRANSFER MOTOR RELAY OPERATION CHART

CLUTCH PRESSURE SOLENOID VALVE

The clutch pressure solenoid valve distributes front and rear torque in AUTO mode.

2-4WD SHIFT SOLENOID VALVE

The 2-4WD shift solenoid valve operates to apply oil pressure to the wet-multiplate clutch, depending on the drive mode. The driving force is transmitted to the front wheels through the clutch so the vehicle is set in the 4WD mode. Setting the vehicle in the 2WD mode requires no pressure buildup. In other words, pressure force applied to the wet-multiplate clutch becomes zero.

TRANSFER CONTROL DEVICE

Integrates actuator motor and actuator position switch.

Actuator Motor

Moves shift rods when signaled by transfer control unit.

Actuator Position Switch

Detects actuator motor position and then sends signal to transfer control unit.

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CAN Communication

Refer to " SYSTEM DESCRIPTION ".

FUNCTION

CONSULT-III can display each diagnostic item using the diagnostic test modes shown on following chart.

CONSULT-III FUNCTION CHART

Display Item List

DISPLAY ITEM CHART

WORK SUPPORT

When there is no malfunction with transfer and 4WD system, the following symptoms in AUTO mode may be claimed by a customer: vibration when accelerating on a low μ road (snow-covered or icy road) or a slight shock is felt at a few hertz as if it were being pushed lightly from behind.

It is possible to deal with these symptoms by changing the CLUTCH FORCE RELEASE LIMIT VALUE. However, be careful when changing the value because it may adversely affect driving performance.

TRANSFER SHIFT RELAY

1. Turn ignition switch OFF. (Stay for at least 5 seconds.)
2. Remove transfer shift high relay and transfer shift low relay. Refer to " «COMPONENT PARTS LOCATION»(ref-382185-S40824170572011011400000) ".
3. Apply 12V direct current between transfer shift relay terminals 1 and 2.
4. Check continuity between relay terminals 3 and 4, 3 and 5. TERMINAL CONTINUITY REFERENCE CHART Terminal Condition Continuity 3 - 4 12V direct current supply between terminals 1 and 2 No OFF Yes 3 - 5 12V direct current supply between terminals 1 and 2 Yes OFF No
5. If NG, replace transfer shift relay.

1. Remove transfer control device. Refer to " «REMOVAL AND INSTALLATION»(ref-382185-S35382624052011011400000) ".
2. Check operation by applying battery voltage to transfer control device (actuator motor) terminals 21 and 24. CAUTION: Do not operate actuator motor for more than 1 second. Change the actuator motor position to HIGH when installing. Be careful not to overheat the harness. TERMINAL REFERENCE CHART Terminal Actuator motor 21 (Battery voltage) - 24 (Ground) Clockwise rotate 24 (Battery voltage) - 21 (Ground) Counterclockwise rotate
3. Check resistance between transfer control device (actuator motor) terminals 21 and 24. 21 - 24 : Approx. 0.2 ohms
4. If NG, replace transfer control device (actuator motor).

TRANSFER DROPPING RESISTOR

1. Turn ignition switch OFF. (Stay for at least 5 seconds.)
2. Disconnect transfer dropping resistor harness connector.
3. Check resistance between transfer dropping resistor terminals 1 and 2. 1 - 2 : Approx. 11.2 - 12.8 ohms
4. If the inspection results are abnormal replace transfer dropping resistor. Refer to " «COMPONENT PARTS LOCATION»(ref-382185-S40824170572011011400000) ".

TRANSFER MOTOR RELAY

1. Turn ignition switch OFF. (Stay for at least 5 seconds.)
2. Remove transfer motor relay. Refer to " «COMPONENT PARTS LOCATION»(ref-382185-S40824170572011011400000) ".
3. Apply 12V direct current between transfer motor relay terminals 1 and 2.
4. Check continuity between relay terminals 3 and 5. TERMINAL CONTINUITY REFERENCE CHART Condition Continuity 12V direct current supply between terminals 1 and 2 Yes OFF No
5. If inspection results are abnormal replace transfer motor relay.

1. Turn ignition switch OFF. (Stay for at least 5 seconds.)
2. Remove transfer motor. Refer to " «REMOVAL AND INSTALLATION»(ref-382185-S33268697762011011400000) ".
3. Apply 12V direct current between transfer motor terminals 14 and 15.
4. If transfer motor does not operate, replace transfer motor.

FLASH CODE CHART

FLASH CODE CHART

Note. If actuator position switch or actuator circuit is displayed, first erase self-diagnostic results. (Actuator position switch or actuator circuit may be displayed after installing transfer control unit or transfer assembly.) If clutch pressure switch or line pressure switch is displayed only while driving in reverse, check the continuity of R position on transmission range switch. When there is no malfunction found in the electrical system, check the hydraulic system.

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Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER"

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. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.

Information necessary to service the system safely is included in the SRS AIRBAG article and SEAT BELTS article.

PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS

Precaution Necessary for Steering Wheel Rotation After Battery Disconnect

Note. This Procedure is applied only to models with Intelligent Key system and NATS (NISSAN ANTI-THEFT SYSTEM). Remove and install all control units after disconnecting both battery cables with the ignition knob in the "LOCK" position. Always use CONSULT-III to perform self-diagnosis as a part of each function inspection after finishing work. If DTC is detected, perform trouble diagnosis according to self-diagnostic results.

For models equipped with the Intelligent Key system and NATS, an electrically controlled steering lock mechanism is adopted on the key cylinder.

For this reason, if the battery is disconnected or if the battery is discharged, the steering wheel will lock and steering wheel rotation will become impossible.

If steering wheel rotation is required when battery power is interrupted, follow the procedure below before starting the repair operation.

Service Notice

1. After overhaul refill the transfer with new transfer fluid.
2. Check the fluid level or replace the fluid only with the vehicle parked on level ground.
3. During removal or installation, keep inside of transfer clear of dust or dirt.
4. Disassembly should be done in a clean work area.
5. Before proceeding with disassembly, thoroughly clean the transfer. It is important to prevent the internal parts from becoming contaminated by dirt or other foreign matter.
6. Check for the correct installation status prior to removal or disassembly. If matchmarks are required, be certain they do not interfere with the function of the parts when applied.
7. All parts should be carefully cleaned with a general purpose, non-flammable solvent before inspection or reassembly.
8. Check appearance of the disassembled parts for damage, deformation, and unusual wear. Replace them with new ones if necessary.
9. Gaskets, seals and O-rings should be replaced any time the transfer is disassembled.
10. In principle, tighten bolts or nuts gradually in several steps working diagonally from inside to outside. If tightening sequence is specified, use it.
11. Observe the specified torque when assembling.
12. Clean and flush the parts sufficiently and blow-dry them.
13. Be careful not to damage sliding surfaces and mating surfaces.
14. Use lint-free cloth or towels for wiping parts clean. Common shop rags can leave fibers that could interfere with the operation of the transfer.

Special Service Tool

The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.

SPECIAL SERVICE TOOL DESCRIPTION CHART Tool number (Kent-Moore No.) Tool name Description KV381054S0 (J-34286) Puller Removing front oil seal Removing rear oil seal Removing metal bushing KV38100500 (-) Drift Installing front oil seal 80 mm (3.15 in) dia. 60 mm (2.36 in) dia. ST30720000 (J-25405) Drift Installing rear oil seal Installing mainshaft front bearing and oil seal 77 mm (3.03 in) dia. 55.5 mm (2.185 in) dia. KV40105310 (-) Drift Installing dust cover 89 mm (3.50 in) dia. 80.7 mm (3.17 in) dia. ST22360002 (J-25679-01) Drift Installing side oil seal 23 mm (0.91 in) dia. 32 mm (1.26 in) dia. ST35300000 (-) Drift Removing sun gear assembly and planetary carrier assembly Removing carrier bearing Installing metal bushing 59 mm (2.32 in) dia. 45 mm (1.77 in) dia. ST33200000 (J-26082) Drift Removing mainshaft front bearing Installing sun gear assembly and planetary carrier assembly Installing mainshaft front bearing and oil seal 74.5 mm (2.933 in) dia. 62.5 mm (2.461 in) dia. ST30031000 (-) Puller Removing carrier bearing Removing front drive shaft front bearing Removing front drive shaft rear bearing 90 mm (3.54 in) dia. 50 mm (1.97 in) dia. ST33710000 (-) Drift Removing needle bearing Removing metal bushing 24 mm (0.94 in) dia. 89 mm (3.5 in) 30 mm (1.18 in) dia. ST35325000 (-) Drift bar Removing metal bushing 215 mm (8.46 in) 25 mm (0.98 in) dia. M12 x 1.5P ST33052000 (-) Adapter Removing front drive shaft front bearing Removing front drive shaft rear bearing Installing mainshaft 28 mm (1.10 in) dia. 22 mm (0.87 in) dia. ST22452000 (J-34335) Drift Removing press flange snap ring Installing press flange snap ring 45 mm (1.77 in) dia. 36 mm (1.42 in) dia. 400 mm (15.76 in) dia. ST30911000 (-) Puller Removing press flange snap ring Installing press flange snap ring Installing mainshaft Installing carrier bearing 98 mm (3.86 in) dia. 40.5 mm (1.594 in) dia. KV31103300 (-) Drift Removing press flange snap ring Installing press flange snap ring Installing carrier bearing 76.3 mm (3.004 in) dia. 130 mm (5.12 in) KV38100300 (J-25523) Drift Removing mainshaft rear bearing 54 mm (2.13 in) dia. 46 mm (1.81 in) dia. 32 mm (1.26 in) dia. ST15310000 (J-25640-B) Drift Installing mainshaft rear bearing 96 mm (3.78 in) dia. 84 mm (3.31 in) dia. KV40100621 (J-25273) Drift Installing front drive shaft front bearing Installing front drive shaft rear bearing 76 mm (2.99 in) dia. 69 mm (2.72 in) dia. ST30032000 (J-26010-01) Base Installing front drive shaft front bearing Installing front drive shaft rear bearing 38 mm (1.50 in) dia. 80 mm (3.15 in) dia. ST33220000 (-) Drift Installing needle bearing a: 37 mm (1.46 in) dia. b: 31 mm (1.22 in) dia. b: 22 mm (0.87 in) dia

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Commercial Service Tool

COMMERCIAL SERVICE TOOL DESCRIPTION CHART Tool name Description Puller Removing companion flange Pin punch Removing retainer pin Installing retainer pin 6 mm (0.24 in) dia. Power tool Removing transfer case assembly

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1. Partially drain transfer fluid. Refer to " «REPLACEMENT»(ref-382185-S19595566582011011400000) ".
2. Remove the oil filter bolts and oil filter. CAUTION: Do not damage center case or oil filter. Loosen bolts and detach oil filter evenly.
3. Remove the O-rings (1) from the oil filter (2).
4. Remove the oil filter stud from the oil filter.
5. Remove the O-ring from the oil filter stud.

Scheme 268

1. Apply ATF to the new O-ring, and install it on the oil filter stud. CAUTION: Do not reuse O-ring.
2. Install the oil filter stud to the oil filter.
3. Apply ATF to the two new O-rings (1), and install them on the oil filter (2). CAUTION: Do not reuse O-rings.
4. Install the oil filter to the transfer assembly. Tighten the bolts to the specified torque. Refer to " «DISASSEMBLY AND ASSEMBLY»(ref-382185-S11347808432011011400000) ". CAUTION: Do not damage oil filter. Attach oil filter and tighten bolts evenly.
5. Check the transfer fluid. Refer to " «INSPECTION»(ref-382185-S35418285852011011400000) ".
6. Start the engine for one minute. Then stop the engine and recheck the transfer fluid. Refer to " «INSPECTION»(ref-382185-S35418285852011011400000) ".

CLEARANCE BETWEEN INNER GEAR AND OUTER GEAR

CLEARANCE BETWEEN INNER GEAR AND OUTER GEAR SPECIFICATION CHART

CLUTCH

CLUTCH SPECIFICATION CHART

PINION GEAR END PLAY

PINION GEAR END PLAY SPECIFICATION CHART

CLEARANCE BETWEEN SHIFT FORK AND SLEEVE

CLEARANCE BETWEEN SHIFT FORK AND SLEEVE SPECIFICATION CHART

Sub-oil Pump

SUB-OIL PUMP SPECIFICATION CHART

Main Oil Pump

MAIN OIL PUMP SPECIFICATION CHART

Control Valve

CONTROL VALVE SPECIFICATION CHART

Control Valve Spring

CONTROL VALVE SPRING SPECIFICATION CHART

Return Spring

RETURN SPRING SPECIFICATION CHART