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 "SUPPLEMENTAL RESTRAINT SYSTEM" and "SEAT BELTS" of this Service Information.
| 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 performed by an authorized NISSAN/INFINITI dealer. Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag Module, see the " SUPPLEMENTAL RESTRAINT SYSTEM ". Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this Service Information. SRS wiring harnesses can be identified by yellow and/or orange harnesses or harness connectors. |
Precaution Necessary for Steering Wheel Rotation after Battery Disconnect
Note. Before removing and installing any control units, first turn the push-button ignition switch to the LOCK position, then disconnect both battery cables. After finishing work, confirm that all control unit connectors are connected properly, then re-connect both battery cables. Always use CONSULT-III to perform self-diagnosis as a part of each function inspection after finishing work. If a DTC is detected, perform trouble diagnosis according to self-diagnosis results.
This vehicle is equipped with a push-button ignition switch and a steering lock unit.
If the battery is disconnected or discharged, the steering wheel will lock and cannot be turned.
If turning the steering wheel is required with the battery disconnected or discharged, follow the procedure below before starting the repair operation.
Service Notice or Precaution
- Do not reuse transfer fluid, once it has been drained.
- Check the fluid level or replace the fluid only with the vehicle parked on level ground.
- During removal or installation, keep inside of transfer clear of dust or dirt.
- Replace all tires at the same time. Always use tires of the proper size and the same brand and pattern. Fitting improper size and unusual wear tires applies excessive force to vehicle mechanism and can cause longitudinal vibration.
- Disassembly should be done in a clean work area, it is preferable to work in dustproof area.
- 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.
- All parts should be carefully cleaned with a general purpose, non-flammable solvent before inspection or reassembly.
- Check for the correct installation status prior to removal or disassembly. If matching marks are required, be certain they do not interfere with the function of the parts when applied.
- Check appearance of the disassembled parts for damage, deformation, and unusual wear. Replace them with a new ones if necessary.
- Gaskets, seals and O-rings should be replaced any time when the transfer is disassembled.
- In principle, tighten bolts or nuts gradually in several steps working diagonally from inside to outside. If tightening sequence is specified, use it.
- Observe the specified torque when assembling.
- Clean and flush the parts sufficiently and blow-dry them.
- Be careful not to damage sliding surfaces and mating surfaces.
- Clean inner parts with lint-free cloth or towels. Do not use cotton work gloves and rags to prevent adhering fibers.
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 ST27862000 (-) Drift 62.5 mm (2.461 in) dia. 42 mm (1.65 in) dia. Installing front oil seal KV381054S0 (J-34286) Puller Removing rear oil seal ST30720000 (J-25405) Drift 77 mm (3.03 in) dia. 55.5 mm (2.185 in) dia. Installing rear oil seal Installing mainshaft oil seal KV40104830 (-) Drift 70 mm (2.76 in) dia. 63.5 mm (2.500 in) dia. Installing rear oil seal KV38100300 (J-25523) Drift 54 mm (2.13 in) dia. 46 mm (1.81 in) dia. 32 mm (1.26 in) dia. Removing mainshaft bearing ST33052000 (-) Drift 28 mm (1.10 in) dia. 22 mm (0.87 in) dia. Removing mainshaft assembly ST30611000 (J-25742-1) Drift bar 350 mm (1.10 in) 25 mm (1.10 in) dia. M12 x 1.5P Removing rear bearing ST35321000 (-) Drift 49 mm (1.93 in) dia. 41 mm (1.61 in) dia. Removing rear bearing Installing mainshaft assembly ST31214000 (J-25269-B) Drift 34 mm (1.34 in) dia. 25.5 mm (1.004 in) dia. Removing front drive shaft front bearing Removing front drive shaft rear bearing KV38104010 (-) Drift 67 mm (2.64 in) dia. 49 mm (1.93 in) dia. Installing front drive shaft rear bearing Installing rear bearing ST33200000 (J-26082) Drift 60 mm (2.36 in) dia. 44.5 mm (1.752 in) dia. Installing front drive shaft front bearing ST30621000 (J-25742-5) Drift 80 mm (3.15 in) dia. 59 mm (2.32 in) dia. Installing mainshaft bearing
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Commercial Service Tool
COMMERCIAL SERVICE TOOL DESCRIPTION CHART Tool name Description Puller Removing companion flange Flange wrench Removing and installing self-lock nut Puller Removing front drive shaft front bearing Removing front drive shaft rear bearing Removing companion flange (VK45DE models) Power tool Loosening bolts and nuts
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ELECTRIC CONTROLLED COUPLING
Operation Principle
Scheme 80
Scheme 81
- AWD control unit supplies command current to electric controlled coupling (AWD solenoid).
- Control clutch is engaged by electromagnet and torque is detected in control clutch.
- The cam operates in response to control clutch torque and applies pressure to main clutch.
- Main clutch transmits torque to front wheels according to pressing power. Transmission torque to front wheels is determined according to command current.
Scheme 82
- Controls distribution of drive power between rear-wheel drive (0:100) and AWD (50:50) conditions according to signals from sensors.
- Self-diagnosis can be done with CONSULT-III.
AWD WARNING LAMP
Turns ON when there is a malfunction in AWD system. It indicates that fail-safe mode is engaged and vehicle change to rear-wheel drive or shifting driving force-AWD (Front-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.
AWD Warning Lamp Indication
| Condition | AWD warning lamp |
|---|---|
| Lamp check | Turns ON when ignition switch is turned ON. Turns OFF approx. 1 second after engine start. |
| AWD system malfunction | ON |
| Protection function is activated due to heavy load to electric controlled coupling. (AWD system is not malfunctioning and AWD system changes to 2WD mode.) | Rapid flashing: 2 times/second (Flashing in approx. 1 minute and then turning OFF) |
| Large difference in diameter of front/rear tires | Slow flashing: 1 time/2 seconds (Continuing to flash until turning ignition switch OFF) |
| Other than above (system normal) | OFF |
AWD WARNING LAMP INDICATION CONDITIONS
Scheme 83
FUNCTION
CONSULT-III can display each diagnostic item using the diagnostic test modes shown following.
| Diagnostic test mode | Function |
|---|---|
| Self-diagnostic results | Self-diagnostic results can be read and erased quickly. |
| Data monitor | Input/Output data in the AWD control unit can be read. |
| Active test | Diagnostic Test Mode in which CONSULT-III drives some actuators apart from the AWD control unit and also shifts some parameters in a specified range. |
| ECU part number | AWD control unit part number can be read. |
DIAGNOSTIC TEST MODES REFERENCE CHART
SELF-DIAG RESULT MODE
Drive at 30 km/h (19 MPH) or more for approximately 1 minute before performing the self-diagnosis.
Display Item List
| Items (CONSULT-III screen terms) | Diagnostic item is detected when... | Check item |
|---|---|---|
| CONTROLLER FAILURE [C1201] | Malfunction has occurred inside AWD control unit. | " DTC C1201 CONTROLLER FAILER " |
| ABS SYSTEM [C1203] | Malfunction related to wheel sensor has been detected by ABS actuator and electric unit (control unit). | " DTC C1203 ABS SYSTEM " |
| 4WD SOLENOID [C1204] | Malfunction related to AWD solenoid has been detected. | " DTC C1204 AWD SOLENOID " |
| 4WD ACTUATOR RLY [C1205] | Malfunction has been detected from AWD actuator relay integrated with AWD control unit, or malfunction related to AWD solenoid has been detected. | " DTC C1205 AWD ACTUATOR RELAY "or " DTC C1204 AWD SOLENOID " |
| ENGINE SIGNAL 1 [C1210] | Malfunction has been detected from ECM. | " DTC C1210 ENGINE CONTROL SIGNAL " |
| CAN COMM CIRCUIT [U1000] | When AWD control unit is not transmitting or receiving CAN communication signal for 2 seconds or more. | " DTC U1000 CAN COMMUNICATION LINE " |
| CONTROL UNIT (CAN) [U1010] | Detecting error during the initial diagnosis of CAN controller of AWD control unit. | " DTC U1000 CAN COMMUNICATION LINE " |
| NO DTC IS DETECTED. FURTHER TESTING MAY BE REQUIRED. | No NG item has been detected. |
SELF-DIAG RESULT MODE DISPLAY ITEM LIST
| CAUTION | If "CAN COMM CIRCUIT [U1000]" or "[U1010]" is displayed with other DTCs, first perform the trouble diagnosis for CAN communication line. Make sure that ABS warning lamp turns OFF by driving for a minute at vehicle speed of 30 km/h (19 MPH) or more after turning ignition switch "OFF" if AWD warning lamp turns ON with system malfunction of "ABS SYSTEM [C1203]". AWD warning lamp may not turn OFF if it is normal unless ignition switch turns OFF at once and engine restarts after that. |
How to Erase Self-Diagnostic Results
Before erasing DTC memory, start the engine and drive at 30 km/h (19 MPH) or more for approximately 1 minute. Check that ABS warning lamp turns OFF.
Note. When 4WD warning lamp is ON with system malfunction of DTC "C1203", 4WD warning lamp may not turned OFF unless running the vehicle at 30 km/h (19 MPH) or more for a minute and check ABS warning lamp is turned OFF. Then turn ignition key OFF, and start engine again.
DATA MONITOR MODE
Display Item List
| X: Standard \/: Optional Item | |||
|---|---|---|---|
| Monitor item (Unit) | SELECT MONITOR ITEM | Remarks | |
| ECU INPUT | SIGNALS MAIN SIGNALS | ||
| FR RH SENSOR [km/h] or [mph] | X | X | Wheel speed calculated by front wheel sensor RH signal is displayed. |
| FR LH SENSOR [km/h] or [mph] | X | X | Wheel speed calculated by front wheel sensor LH signal is displayed. |
| RR RH SENSOR [km/h] or [mph] | X | X | Wheel speed calculated by rear wheel sensor RH signal is displayed. |
| RR LH SENSOR [km/h] or [mph] | X | X | Wheel speed calculated by rear wheel sensor LH signal is displayed. |
| BATTERY VOLT [V] | \/ | \/ | Power supply voltage for AWD control unit |
| THRTL POS SEN [%] | \/ | \/ | Throttle opening status is displayed. |
| ETS SOLENOID [A] | \/ | \/ | Monitored value of current at AWD solenoid |
| STOP LAMP SW [ON/OFF] | \/ | \/ | Stop lamp switch signal status via CAN communication line is displayed. |
| ENG SPEED SIG [RUN/STOP] | \/ | \/ | Engine status is displayed. |
| ETS ACTUATOR [ON/OFF] | \/ | \/ | Operating condition of AWD actuator relay (integrated in AWD control unit) is displayed. |
| 4WD WARN LAMP [ON/OFF] | \/ | \/ | Control status of AWD warning lamp is displayed. |
| 4WD MODE SW [AUTO] | \/ | \/ | Mode switch is not equipped, but displayed. |
| 4WD MODE MON [AUTO] | \/ | V | Control status of AWD is displayed. |
| DIS-TIRE MONI [mm] | \/ | \/ | Improper size tire installed condition is displayed. |
| P BRAKE SW [ON/OFF] | \/ | \/ | Parking switch signal status via CAN communication line is displayed. |
| Voltage [V] | \/ | \/ | The value measured by the voltage probe is displayed. |
| Frequency [Hz] | \/ | V | The value measured by the pulse probe is displayed. |
| DUTY-HI (high) [%] | \/ | \/ | |
| DUTY-LOW (low) [%] | \/ | \/ | |
| PLS WIDTH-HI [msec] | \/ | \/ | |
| PLS WIDTH-LOW [msec] | \/ v b | \/ | |
DATA MONITOR MODE DISPLAY ITEM LIST
CONSULT-III REFERENCE VALUE IN DATA MONITOR MODE
Data are reference value.
| Monitor item [Unit] | Condition | Display value | |
|---|---|---|---|
| ETS SOLENOID [A] | Engine running | At idle speed | Approx. 0.000A |
| When depressing accelerator pedal | Approx. 0.000 - 0.500A (1) | ||
| (1) The values are changed by throttle opening and engine speed. | |||
| (1) | The values are changed by throttle opening and engine speed. |
CONSULT-III REFERENCE VALUE IN DATA MONITOR MODE
Data are reference value.
| Monitor item | Condition | Display value |
|---|---|---|
| ETS ACTUATOR [ON/OFF] | Engine stopped (Ignition switch: ON) | Off |
| Engine running | On |
CONSULT-III REFERENCE VALUE IN DATA MONITOR MODE
Data are reference value.
| Monitor item [Unit] | Condition | Display value (Approx.) |
|---|---|---|
| BATTERY VOLT [V] | Ignition switch: ON | Battery voltage |
CONSULT-III REFERENCE VALUE IN DATA MONITOR MODE
While Driving, AWD Warning Lamp Flashes Rapidly (When Flashing in Approx. 1 Minute and Then Turning OFF)
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)
Note. Slow flashing: 1 time/2 seconds