2005 INFINITI FX35 oil

AT-52
TROUBLE DIAGNOSIS
Revision: 2005 July 2005 FX
Inspections Before Trouble DiagnosisACS002LY
A/T CHECK
A/T Fluid Leakage and A/T Fluid Level Check

Check for A/T fluid leakage and check the A/T fluid level. Refer to AT- 1 3 , "Checking A/T Fluid" .
A/T Fluid Condition Check
Inspect the A/T fluid condition.
STALL TEST
Stall Test Procedure
1. Inspect the amount of engine oil. Replenish the engine oil if necessary.
2. Drive for about 10 minutes to warm up the vehicle so that the A/ T fluid temperature is 50 to 80 °C (122 to 176 °F). Check the
amount of ATF. Replenish if necessary.
3. Securely engage the parking brake so that the tires do not turn.
4. Start engine, apply foot brake, and place selector lever in “D” position.
Fluid condition Conceivable Cause Required Operation
Varnished (viscous
varnish state) Clutch, brake
scorched Replace the ATF and check the A/T
main unit and the vehicle for mal-
functions (wire harnesses, cooler
pipes, etc.)
Milky white or
cloudy Water in the fluid
Replace the ATF and check for
places where water is getting in.
Large amount of
metal powder mixed
in Unusual wear of
sliding parts within
A/T Replace the ATF and check for
improper operation of the A/T.
SAT638A
SAT647B
SCIA7463E
SCIA6291E

AT-54
TROUBLE DIAGNOSIS
Revision: 2005 July 2005 FX
Stall test standard value position
LINE PRESSURE TEST
Line Pressure Test Port
Line Pressure Test Procedure
1. Inspect the amount of engine oil and replenish if necessary.
2. Drive the car for about 10 minutes to warm it up so that the ATF reaches in range of 50 to 80 °C (122 to
176 °F), then inspect the amount of ATF and replenish if necessary.
NOTE:
The A/T fluid temperature rises in range of 50 to 80 °C (122 to 176 °F) during 10 minutes of driving.
3. Remove the front propeller shaft from vehicle (with AWD models). Refer to PR-5, "
Removal and Installa-
tion" .
4. After warming up remove the oil pressure detection plug and install the oil pressure gauge [ST2505S001(J-34301-C)].
CAUTION:
When using the oil pressure gauge, be sure to use the O-
ring attached to the oil pressure detection plug.
5. Securely engage the parking brake so that the tires do not turn.
Does not shift-up “D” or “M” position 1 → 2 Slipping in 2nd, 3rd or 4th gear Direct clutch slippage
Does not shift-up “D” or “M” position 2 → 3 Slipping in 3rd, 4th or 5th gear High and low reverse clutch slippage
Does not shift-up “D” or “M” position 3 → 4 Slipping in 4th or 5th gear Input clutch slippage
Does not shift-up “D” or “M” position 4 → 5 Slipping in 5th gear Front brake slippage
SCIA2187E
SCIA5309E
SCIA7463E

TROUBLE DIAGNOSIS AT-55
D E
F
G H
I
J
K L
M A
B
AT
Revision: 2005 July 2005 FX
6. Start the engine, then measure the line pressure at both idle and
the stall speed.
CAUTION:

Keep the brake pedal pressed all the way down during
measurement.

When measuring the line pressure at the stall speed,
refer to AT- 5 2 , "
STALL TEST" .
7. After the measurements are complete, install the oil pressure detection plug and tighten to the specified torque.
CAUTION:

Do not reuse the O-ring.

Apply ATF to the O-ring.
Line Pressure
Judgement of Line Pressure Test
:7.3 N·m (0.74 kg-m, 65 in-lb)SAT493G
Engine speed Line pressure [kPa (kg/cm
2 , psi)]
“R” position “D”, “M” positions
At idle speed 425 - 465 (4.3 - 4.8, 62 - 67) 379 - 428 (3.9 - 4.4, 55 - 62)
At stall speed 1,605 - 1,950 (16.4 - 19.9, 233 - 283) 1,310 - 1,500 (13.4 - 15.3, 190 - 218)
Judgement Possible cause
Idle speed Low for all positions
(“P”, “R”, “N”, “D”,
“M”) Possible causes include malfunctions in the pressure supply system and low oil pump output.
For example

Oil pump wear

Pressure regulator valve or plug sticking or spring fatigue

Oil strainer
oil pump
pressure regulator valve passage oil leak

Engine idle speed too low
Only low for a spe-
cific position Possible causes include an oil pressure leak in a passage or device related to the position after
the pressure is distributed by the manual valve.
High Possible causes include a sensor malfunction or malfunction in the line pressure adjustment func-
tion.
For example

Accelerator pedal position signal malfunction

ATF temperature sensor malfunction

Line pressure solenoid malfunction (sticking in OFF state, filter clog, cut line)

Pressure regulator valve or plug sticking

AT-56
TROUBLE DIAGNOSIS
Revision: 2005 July 2005 FX
ROAD TEST
Description

The road test checks overall performance of the A/T and analyzes possible malfunction causes.

The road test is carried out in the following three stages.
1. Check before engine is started. Refer to AT- 5 6
.
2. Check at idle. Refer to AT- 5 7
.
3. Cruise test

Inspect all the items from Part 1 to Part 3. Refer to AT- 5 8 , AT- 6 0 , AT- 6 1 .

Before beginning the road test, check the test procedure and inspection items.

Test all inspection items until the symptom is uncovered. Diagnose NG items when all road tests are com-
plete.
Check Before Engine Is StartedACS002LZ
1. CHECK A/T CHECK INDICATOR LAMP
1. Park vehicle on level surface.
2. Move selector lever to “P” position.
3. Turn ignition switch OFF and wait at least 10 seconds.
4. Turn ignition switch ON.
Does A/T CHECK indicator lamp light up for about 2 seconds?
YES >> GO TO 2.
NO >> Stop the road test and go to AT- 1 9 3 , "
A/T CHECK Indicator Lamp Does Not Come On" .
2. CHECK A/T CHECK INDICATOR LAMP
Does A/T CHECK indicator lamp flash for about 8 seconds?
YES >> For TCM fail-safe mode, perform self-diagnostics and record all NG items on the AT- 4 7 , "DIAG-
NOSTIC WORKSHEET" . Refer to AT- 9 3 , "SELF-DIAGNOSTIC RESULT MODE" , AT- 1 0 3 , "Diag-
nostic Procedure without CONSULT-II" .
NO >> 1. Turn ignition switch OFF.
2. Perform self-diagnostics and record all NG items on the AT- 4 7 , "
DIAGNOSTIC WORKSHEET"
. Refer to AT- 9 3 , "SELF-DIAGNOSTIC RESULT MODE" , AT- 1 0 3 , "Diagnostic Procedure with-
out CONSULT-II" .
3. Go to AT- 5 7 , "
Check at Idle" .
Stall speed Oil pressure does
not rise higher than
the oil pressure for
idle. Possible causes include a sensor malfunction or malfunction in the pressure adjustment function.
For example

Accelerator pedal position signal malfunction

TCM breakdown

Line pressure solenoid malfunction (shorting, sticking in ON state)

Pressure regulator valve or plug sticking

Pilot valve sticking or pilot filter clogged
The pressure rises,
but does not enter
the standard posi-
tion. Possible causes include malfunctions in the pressure supply system and malfunction in the pres-
sure adjustment function.
For example

Accelerator pedal position signal malfunction

Line pressure solenoid malfunction (sticking, filter clog)

Pressure regulator valve or plug sticking

Pilot valve sticking or pilot filter clogged
Only low for a spe-
cific position Possible causes include an oil pressure leak in a passage or device related to the position after
the pressure is distributed by the manual valve.
Judgement Possible cause

AT-58
TROUBLE DIAGNOSIS
Revision: 2005 July 2005 FX
6. CHECK “R” POSITION FUNCTIONS
1. Engage the brake.
2. Move selector lever to “R” position.
3. Disengage the brake for 4 to 5 seconds.
Does the vehicle creep backward?
YES >> GO TO 7.
NO >> Enter a check mark at “Vehicle Does Not Creep Backward In “R” Position” on the AT- 4 7 , "
DIAG-
NOSTIC WORKSHEET" , then continue the road test.
7. CHECK “D” POSITION FUNCTIONS
Inspect whether the vehicle creep forward when the transmission is put into the “D” position.
Does the vehicle creep forward in the
“D” position?
YES >> Go to AT- 5 8 , "Cruise Test - Part 1" , AT- 6 0 , "Cruise Test - Part 2" , and AT- 6 1 , "Cruise Test - Part
3" .
NO >> Enter a check mark at “Vehicle Does Not Creep Forward In “D” Position” on the AT- 4 7 , "
DIAG-
NOSTIC WORKSHEET" , then continue the road test.
Cruise Test - Part 1ACS002M1
1. CHECK STARTING OUT FROM D1
1. Drive the vehicle for about 10 minutes to warm up the engine oil and ATF. Appropriate temperature for the ATF: 50 to 80 °C (122 to 176 °F)
2. Park the vehicle on a level surface.
3. Move selector lever to “P” position.
4. Start the engine.
5. Move selector lever to “D” position.
6. Press the accelerator pedal about half way down to accelerate the vehicle.
With CONSULT-II
Read the gear positions. Refer to AT- 9 6 , "
DATA MONITOR MODE" .
Starts from D1?
YES >> GO TO 2.
NO >> Enter a check mark at “Vehicle Cannot Be Started From D1” on the AT- 4 7 , "
DIAGNOSTIC WORK-
SHEET" , then continue the road test.
2. CHECK SHIFT-UP D1 → D2
Press down the accelerator pedal about half-way and inspect if the vehicle shifts up (D1 → D2) at the appro-
priate speed.

Refer to AT- 6 2 , "Vehicle Speed at Which Gear Shifting Occurs" .
With CONSULT-II
Read the gear position, throttle degree of opening, and vehicle speed. Refer to AT- 9 6 , "
DATA MONITOR
MODE" .
Does the A/T shift-up D1
→ D2 at the correct speed?
YES >> GO TO 3.
NO >> Enter a check mark at “A/T Does Not Shift: D1 → D2” on the AT- 4 7 , "
DIAGNOSTIC WORK-
SHEET" , then continue the road test.

AT-72
TROUBLE DIAGNOSIS
Revision: 2005 July 2005 FX
23
Slips/Will
Not
Engage Vehicle cannot be
started from D
1 .
Refer to AT-205,
"Vehicle Cannot Be
Started from D1" . ON vehicle
1. A/T fluid level and state
AT- 5 2
2. Accelerator pedal position sensorAT- 1 3 3
3. Line pressure test AT- 5 4
4. CAN communication lineAT- 1 0 6
5. Control valve with TCMAT- 2 4 3
OFF vehicle 6. Torque converter
AT- 2 9 0
7. Oil pump assemblyAT- 3 0 8
8. 3rd one-way clutch AT- 3 11
9. 1st one-way clutch AT- 3 1 8
10. Gear systemAT- 2 7 8
11. Reverse brakeAT- 2 9 0
12. Forward one-way clutch (Parts behind drum support is
impossible to perform inspection by disassembly. Refer to
AT-18, "
Cross-Sectional View (2WD Models)" or AT-19,
"Cross-Sectional View (AWD Models)" ) AT- 2 9 0
13. Forward brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to AT-18,
"Cross-Sectional View (2WD Models)" or AT- 1 9 , "Cross-
Sectional View (AWD Models)" ) AT- 2 9 0
24Does not lock-up.
Refer to AT-217, "A/T
Does Not Perform
Lock-up" . ON vehicle 1. A/T fluid level and state
AT- 5 2
2. Line pressure testAT- 5 4
3. Engine speed signalAT- 1 2 3
4. Turbine revolution sensorAT- 1 4 1
5. Torque converter clutch solenoid valveAT- 1 2 5
6. CAN communication lineAT- 1 0 6
7. Control valve with TCMAT- 2 4 3
OFF vehicle 8. Torque converter
AT- 2 9 09. Oil pump assemblyAT- 3 0 8
25 Does not hold lock-up
condition.
Refer to AT-219, "A/T
Does Not Hold Lock-
up Condition" . ON vehicle 1. A/T fluid level and state
AT- 5 2
2. Line pressure testAT- 5 4
3. Engine speed signalAT- 1 2 3
4. Turbine revolution sensorAT- 1 4 1
5. Torque converter clutch solenoid valveAT- 1 2 5
6. CAN communication lineAT- 1 0 6
7. Control valve with TCMAT- 2 4 3
OFF vehicle 8. Torque converter
AT- 2 9 09. Oil pump assemblyAT- 3 0 8
No. Items Symptom Condition Diagnostic Item Reference
page

TROUBLE DIAGNOSIS AT-73
D E
F
G H
I
J
K L
M A
B
AT
Revision: 2005 July 2005 FX26
Slips/Will
Not
Engage Lock-up is not
released.
Refer to AT-221,
"Lock-up Is Not
Released" . ON vehicle 1. A/T fluid level and state
AT- 5 2
2. Line pressure testAT- 5 4
3. Engine speed signalAT-123
4. Turbine revolution sensorAT-141
5. Torque converter clutch solenoid valveAT-125
6. CAN communication lineAT-106
7. Control valve with TCMAT-243
OFF vehicle 8. Torque converter
AT-2909. Oil pump assemblyAT-308
27 No shock at all or the
clutch slips when
vehicle changes
speed D
1 → D2 or
M
1 → M2 . ON vehicle
1. A/T fluid level and state
AT- 5 2
2. Vehicle speed sensor A/T and vehicle speed sensor MTR AT- 11 8,
AT-143
3. ATF pressure switch 5 and direct clutch solenoid valve AT-179,
AT-158
4. CAN communication line AT-106
5. Line pressure test AT- 5 4
6. Control valve with TCMAT-243
OFF vehicle 7. Torque converter
AT-290
8. Oil pump assemblyAT-308
9. 3rd one-way clutch AT- 3 11
10. Gear systemAT-278
11. Direct clutchAT-326
12. Forward brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to AT-18,
"Cross-Sectional View (2WD Models)" or AT-19, "Cross-
Sectional View (AWD Models)" ) AT-290
No. Items Symptom Condition Diagnostic Item
Reference
page

AT-74
TROUBLE DIAGNOSIS
Revision: 2005 July 2005 FX
28
Slips/Will
Not
Engage No shock at all or the
clutch slips when
vehicle changes
speed D
2 → D3 or
M
2 → M3 . ON vehicle
1. A/T fluid level and state
AT- 5 2
2. Vehicle speed sensor A/T and vehicle speed sensor MTR AT- 11 8,
AT- 1 4 3
3. ATF pressure switch 6, high and low reverse clutch sole-
noid valve AT- 1 8 1,
AT- 1 6 2
4. CAN communication line AT- 1 0 6
5. Line pressure test AT- 5 4
6. Control valve with TCMAT- 2 4 3
OFF vehicle 7. Torque converter
AT- 2 9 0
8. Oil pump assemblyAT- 3 0 8
9. 3rd one-way clutch AT- 3 11
10. Gear systemAT- 2 7 8
11. High and low reverse clutchAT- 3 2 3
12. Forward one-way clutch (Parts behind drum support is
impossible to perform inspection by disassembly. Refer to
AT-18, "
Cross-Sectional View (2WD Models)" or AT-19,
"Cross-Sectional View (AWD Models)" ) AT- 2 9 0
13. Forward brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to AT-18,
"Cross-Sectional View (2WD Models)" or AT- 1 9 , "Cross-
Sectional View (AWD Models)" ) AT- 2 9 0
29 No shock at all or the
clutch slips when
vehicle changes
speed D
3 → D4 or
M
3 → M4 . ON vehicle
1. A/T fluid level and state
AT- 5 2
2. Vehicle speed sensor A/T and vehicle speed sensor MTR AT- 11 8,
AT- 1 4 3
3. ATF pressure switch 3 and input clutch solenoid valve AT- 1 7 7,
AT- 1 5 0

4. ATF pressure switch 1 and front brake solenoid valve AT- 1 7 5
,
AT- 1 5 4
5. CAN communication line AT- 1 0 6
6. Line pressure test AT- 5 4
7. Control valve with TCMAT- 2 4 3
OFF vehicle 8. Torque converter
AT- 2 9 0
9. Oil pump assemblyAT- 3 0 8
10. Input clutchAT- 3 1 3
11. Gear systemAT- 2 7 8
12. High and low reverse clutchAT- 3 2 3
13. Direct clutchAT- 3 2 6
No. Items Symptom Condition Diagnostic Item Reference
page