Clutch NISSAN NAVARA 2005 Repair Manual Online

AT-162
DTC P1846 ATF PRESSURE SWITCH 6
DTC P1846 ATF PRESSURE SWITCH 6
PFP:25240
DescriptionECS00G1W
Fail-safe function to detect high and low reverse clutch solenoid valve condition.
CONSULT-II Reference ValueECS00G1X
On Board Diagnosis LogicECS00G1Y
Diagnostic trouble code “P1846 ATF PRES SW 6/CIRC” with CONSULT-II is detected when TCM detects that
actual gear ratio is normal, and relation between gear position and condition of ATF pressure switch 6 is irreg-
ular during depressing accelerator pedal. (Other than during shift change)
Possible CauseECS00G1Z
lATF pressure switch 6
lHarness or connectors
(The switch circuit is open or shorted.)
DTC Confirmation ProcedureECS00G20
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch OFF and
wait at least 10 seconds before performing the next test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-II
1. Start engine.
2. Accelerate vehicle to maintain the following conditions.
ACCELE POSI: 1.5/8 - 2.0/8
SLCT LVR POSI: “D” position
GEAR: “2”
“3” (HLR/C ON/OFF)
Driving location: Driving the vehicle uphill (increased
engine load) will help maintain the driving conditions
required for this test.
3. Perform step 2 again.
4. Turn ignition switch OFF, then perform step 1 to 3 again.
5. Check “SELF-DIAG RESULTS” mode for “A/T” with CONSULT-
II.
If DTC (P1846) is detected, go toAT- 1 6 3 , "
Diagnostic Procedure".
If DTC (P1767) is detected, go toAT- 1 4 8 , "
Diagnostic Procedure".
Item name Condition Display value
AT F P R E S S W 6High and low reverse clutch engaged. Refer toAT- 1 7
.ON
High and low reverse clutch disengaged. Refer toAT- 1 7
.OFF
BCIA0031E

DTC P1846 ATF PRESSURE SWITCH 6
AT-163
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Diagnostic ProcedureECS00G21
1.CHECK INPUT SIGNAL
With CONSULT-II
1. Start engine.
2. Select “ECU INPUT SIGNALS” or “MAIN SIGNALS” in “DATA
MONITOR” mode for “A/T” with CONSULT-II.
3. Drive vehicle in the “D” position (2nd
3rd gear), and confirm
the ON/OFF actuation of “ATF PRES SW 6”.
OK or NG
OK >> GO TO 4.
NG >> GO TO 2.
2.CHECK TCM POWER SUPPLY AND GROUND CIRCUIT
Check TCM power supply and ground circuit. Refer toAT- 1 6 4 , "
MAIN POWER SUPPLY AND GROUND CIR-
CUIT".
OK or NG
OK >> GO TO 3.
NG >> Repair or replace damaged parts.
3.DETECT MALFUNCTIONING ITEM
Check the following.
lA/T assembly harness connector pin terminals for damage or loose connection with harness connector.
OK or NG
OK >> Replace control valve with TCM. Refer toAT- 2 1 8 , "Control Valve With TCM and A/T Fluid Temper-
ature Sensor 2".
NG >> Repair or replace damaged parts.
4.CHECK DTC
PerformAT- 1 6 2 , "
DTC Confirmation Procedure".
OK or NG
OK >>INSPECTION END
NG >> GO TO 2.
Item name Condition Display value
AT F P R E S S W 6High and low reverse clutch engaged.
Refer toAT- 1 7
.ON
High and low reverse clutch disengaged.
Refer toAT- 1 7
.OFFPCIA0067E

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

ON-VEHICLE SERVICE
AT-227
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A/T FLUID TEMPERATURE SENSOR 2 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 oil pan and oil pan gasket.
5. 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".
6. Disconnect A/T fluid temperature sensor 2 connector.
CAUTION:
Be careful not to damage connector.
7. Straighten terminal clip to free A/T fluid temperature sensor 2
harness.
SCIA2308E
SCIA5199E
SCIA5023E
SCIA5146E

ON-VEHICLE SERVICE
AT-239
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5. Remove oil pan and oil pan gasket.
6. Check foreign materials in oil pan to help determine causes of
malfunction. If the ATF is very dark, smells burned, or contains
foreign particles, the frictional material (clutches, band) may
need replacement. A tacky film that will not wipe clean indicates
varnish 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".
7. Support A/T assembly using a transmission jack.
CAUTION:
When setting transmission jack, place wooden blocks to
prevent from damaging control valve with TCM and trans-
mission case.
8. Remove A/T cross member. Refer toAT- 2 4 7 , "
Removal and Installation".
9. Remove tightening bolts for rear extension assembly and trans-
mission case.
lSelf-sealing bolt (1)
: Bolt (10)
10. Tap rear extension assembly with a soft hammer.
SCIA2308E
SCIA5199E
SCIA7176J
SCIA3432E

AT-252
OVERHAUL
1. O-ring 2. Oil pump cover 3. O-ring
4. Oil pump housing 5. Self-sealing bolt 6. Torque converter
7. Converter housing 8. Oil pump housing oil seal 9. Bearing race
10. Needle bearing 11. O-ring 12. Front carrier assembly
13. Needle bearing 14. Snap ring 15. Front sun gear
16. 3rd one-way clutch 17. Snap ring 18. Bearing race
19. Needle bearing 20. Seal ring 21. Input clutch assembly
22. Needle bearing 23. Rear internal gear 24. Brake band
25. Mid carrier assembly 26. Needle bearing 27. Bearing race
28. Rear carrier assembly 29. Needle bearing 30. Mid sun gear
31. Seal ring 32. Rear sun gear 33. 1st one-way clutch
34. Snap ring 35. Needle bearing 36. High and low reverse clutch hub
37. Snap ring 38. Bearing race 39. Needle bearing
Refer to GI section to make sure icons (symbol marks) in the figure. Refer toGI-10, "
Components".
However, refer to the following symbols for others.
:Apply Liquid Gasket (Three Bond 1215) or equivalent.

OVERHAUL
AT-253
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1. Bearing race 2. High and low reverse clutch assembly 3. Needle bearing
4. Direct clutch assembly 5. Needle bearing 6. Reverse brake dish plate
7. Reverse brake driven plate 8. N-spring 9. Snap ring
SCIA5181E

DISASSEMBLY
AT-263
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DISASSEMBLYPFP:31020
DisassemblyECS00G3E
CAUTION:
Do not disassemble parts behind drum support. Refer toAT-14, "
Cross-Sectional View (2WD Models)"
,AT-15, "Cross-Sectional View (4WD Models)".
1. Drain ATF through drain hole.
2. Remove torque converter by holding it firmly and turing while
pulling straight out.
3. Check torque converter one-way clutch using a check tool as
showninthefigure.
a. Insert a check tool into the groove of bearing support built into
one-way clutch outer race.
b. When fixing bearing support with a check tool, rotate one-way
clutch spline using a screwdriver.
c. Make sure that inner race rotates clockwise only. If not, replace
torque converter assembly.
4. Remove converter housing from transmission case.
CAUTION:
Be careful not to scratch converter housing.
SCIA5010E
SCIA3171E
SCIA5171E

AT-264
DISASSEMBLY
5. Remove O-ring from input clutch assembly.
6. Remove tightening bolts for oil pump assembly and transmis-
sion case.
7. Attach the sliding hammers to oil pump assembly and extract it
evenly from transmission case.
CAUTION:
lFully tighten the sliding hammer screws.
lMake sure that bearing race is installed to oil pump
assembly edge surface.
8. Remove O-ring from oil pump assembly.
SCIA5011E
SCIA2300E
SCIA4608E
SCIA5172E

DISASSEMBLY
AT-265
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9. Remove bearing race from oil pump assembly.
10. Remove needle bearing from front sun gear.
11. Remove front sun gear assembly from front carrier assembly.
NOTE:
Remove front sun gear by rotating left/right.
12. Remove seal rings from input clutch assembly.
13. Remove front carrier assembly, input clutch assembly and rear
internal gear as a unit.
CAUTION:
Be careful to remove it with needle bearing.
SCIA6529E
SCIA2808E
SCIA5014E
SCIA2470E
SCIA5173E