2005 NISSAN NAVARA service

AT-36
TROUBLE DIAGNOSIS
How to Perform Trouble Diagnosis for Quick and Accurate Repair
ECS00FWX
INTRODUCTION
The TCM receives a signal from the vehicle speed sensor, accelera-
tor pedal position sensor or PNP switch and provides shift control or
lock-up control via A/T solenoid valves.
Input and output signals must always be correct and stable in the
operation of the A/T system. The A/T system must be in good oper-
ating condition and be free of valve seizure, solenoid valve malfunc-
tion, etc.
It is much more difficult to diagnose a error that occurs intermittently
rather than continuously. Most intermittent errors are caused by poor
electric connections or improper wiring. In this case, careful check-
ing of suspected circuits may help prevent the replacement of good
parts.
A visual check only may not find the cause of the errors. A road test
with CONSULT-II or a circuit tester connected should be performed.
Follow theAT-37, "
WORK FLOW".
Before undertaking actual checks, take a few minutes to talk with a
customer who approaches with a driveability complaint. The cus-
tomer can supply good information about such errors, especially
intermittent ones. Find out what symptoms are present and under
what conditions they occur. A “DIAGNOSTIC WORKSFEET” as
shown on the example (Refer toAT-38
) should be used.
Start your diagnosis by looking for “conventional” errors first. This will
help troubleshoot driveability errors on an electronically controlled
engine vehicle.
Also check related Service bulletins.
SAT631IB
SAT632I
SEF234G

AT-38
TROUBLE DIAGNOSIS
DIAGNOSTIC WORKSHEET
Information from Customer
KEY POINTS
lWHAT..... Vehicle & A/T model
lWHEN..... Date, Frequencies
lWHERE..... Road conditions
lHOW..... Operating conditions, Symptoms
Diagnostic Worksheet Chart
Customer name MR/MS Model & Year VIN
Trans. Model Engine Mileage
Malfunction Date Manuf. Date In Service Date
FrequencyoContinuousoIntermittent (times a day)
SymptomsoVehicle does not move. (oAny positionoParticular position)
oNo up-shift (o1st®2ndo2nd®3rdo3rd®4tho4th®5th)
oNo down-shift (o5th®4tho4th®3rdo3rd®2ndo2nd®1st)
oLock-up malfunction
oShift point too high or too low.
oShift shock or slip (oN®DoLock-upoAny drive position)
oNoise or vibration
oNo kick down
oNo pattern select
oOthers
()
OD OFF indicator lampoContinuously litoNot lit
1oRead the item on cautions concerning fail-safe and understand the customer's complaint.AT- 3 4
2oA/T fluid inspectionAT- 4 3oLeak (Repair leak location.)
oState
oAmount
3oStall test and line pressure testAT- 4 3
AT- 4 4oStall te st
oTorque converter one-way clutch
oFront brake
oHigh and low reverse clutch
oLow coast brake
oForward brake
oReverse brake
oForward one-way clutcho1st one-way clutch
o3rd one-way clutch
oEngine
oLine pressure low
oExcept for input clutch and direct
clutch, clutches and brakes OK
oLine pressure inspection - Suspected part:

TROUBLE DIAGNOSIS
AT-77
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CONSULT-II Function (A/T)ECS00FXA
CONSULT-II can display each diagnostic item using the diagnostic test modes 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- 8 0
Data monitor Input/Output data in the ECU can be read.AT- 8 3
CAN diagnostic support
monitorThe results of transmit/receive diagnosis of CAN communication can be read.AT- 8 6
Function testConducted 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 Diagnostic Trouble Codes.AT- 8 6
ECU part number ECU part number can be read. —
Item name Condition Display value (Approx.)
VHCL/S SE-A/T
During drivingApproximately matches the speed-
ometer reading.
VHCL/S SE-MTR
ACCELE POSIReleased accelerator pedal. 0.0/8
Fully depressed accelerator pedal. 8.0/8
CLSD THL POSReleased accelerator pedal. ON
Fully depressed accelerator pedal. OFF
W/O THL POSFully depressed accelerator pedal. ON
Released accelerator pedal. OFF
BRAKE SWDepressed brake pedal. ON
Released brake pedal. OFF
ENGINE SPEED Engine runningClosely matches the tachometer
reading.
TURBINE REV During driving (lock-up ON)Approximately matches the engine
speed.
ATFTEMPSE1
0°C(32°F)-20°C(68°F)-80°C (176°F)3.3 - 2.7 - 0.9 V
ATFTEMPSE23.3 - 2.5 - 0.7 V
TCC SOLENOID When perform lock-up 0.4 - 0.6 A
LINE PRES SOL During driving 0.2 - 0.6 A
FR/B SOLENOIDFront brake engaged. Refer toAT- 1 7
. 0.6 - 0.8 A
Front brake disengaged. Refer toAT- 1 7
.0-0.05A

TROUBLE DIAGNOSIS
AT-79
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CONSULT-II SETTING PROCEDURE
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which carry out CAN communication.
lFor details, refer to the separate “CONSULT-II Operations Man-
ual”.
1. Turn ignition switch OFF.
2. Connect CONSULT-II and CONSULT-II CONVERTER to data
link connector, which is located in instrument lower panel on
driver side.
3. Turn ignition switch ON. (Do not start engine.)
4. Touch “START (NISSAN BASED VHCL)”.
5. Touch “A/T”.
If “A/T” is not indicated, go toGI-50, "
CONSULT-II Data Link
Connector (DLC) Circuit".
6. Perform each diagnostic test mode according to each service
procedure.
BBIA0369E
BCIA0029E
BCIA0030E
BCIA0031E

AT-218
ON-VEHICLE SERVICE
ON-VEHICLE SERVICE
PFP:00000
Control Valve With TCM and A/T Fluid Temperature Sensor 2ECS00G36
COMPONENTS
1. A/T 2. Snap ring 3. Sub-harness
4. Control valve with TCM 5. Bracket 6. A/T fluid temperature sensor 2
7. Oil pan gasket 8. Oil pan 9. Magnet
10. Drain plug 11. Drain plug gasket 12. Oil pan mounting bolt
13. Terminal cord assembly 14. O-ring
SCIA5478E

ON-VEHICLE SERVICE
AT-219
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CONTROL VALVE WITH TCM REMOVAL AND INSTALLATION
Removal
1. Disconnect the battery cable from the negative terminal.
2. Remove under cover.
3. Drain ATF through drain hole.
4. Remove control cable from A/T assembly. Refer toAT- 2 1 0 , "
COMPONENTS".
5. Disconnect A/T assembly harness connector.
6. Remove snap ring from A/T assembly harness connector.
7. Push A/T assembly harness connector.
CAUTION:
Be careful not to damage connector.
8. Remove oil pan and oil pan gasket.
9. Check foreign materials in oil pan to help determine cause of
malfunction. If the ATF is very dark, smell burned or contains
foreign particles, friction material (clutches, band) may need
replacement. A tacky film that will not wipe clean indicates var-
nish build up. Varnish can cause valves, servo, and clutches to
stick and can inhibit pump pressure.
lIf friction material is detected, replace radiator after repair
of A/T. Refer toCO-11, "
RADIATOR".
SCIA5021E
SCIA5022E
SCIA2308E
SCIA5199E

AT-220
ON-VEHICLE SERVICE
10. Remove magnets from oil pan.
11. Disconnect A/T fluid temperature sensor 2 connector.
CAUTION:
Be careful not to damage connector.
12. Straighten terminal clip to free terminal cord assembly A/T fluid
temperature sensor 2 harness.
13. Disconnect revolution sensor connector.
CAUTION:
Be careful not to damage connector.
14. Straighten terminal clips to free revolution sensor harness.
SCIA5200E
SCIA5023E
SCIA5446E
SCIA5024E
SCIA7022E

ON-VEHICLE SERVICE
AT-221
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15. Remove bolts A, B and C from control valve with TCM.
16. Remove control valve with TCM from transmission case.
CAUTION:
When removing, be careful with the manual valve notch and
manual plate height. Remove it vertically.
17. Remove A/T fluid temperature sensor 2 with bracket from con-
trol valve with TCM.
18. Remove bracket from A/T fluid temperature sensor 2.
19. Remove O-ring from A/T assembly harness connector.
Bolt symbol Length [mm (in)] Number of bolts
A42(1.65) 5
B55(2.17) 6
C40(1.57) 1
SCIA5139E
SCIA5142E
SCIA5301E
SCIA5264E
SCIA5155E