2004 INFINITI FX35 torque

AT-52
TROUBLE DIAGNOSIS
Revision: 2004 November 2004 FX35/FX45
CAUTION:
Run the engine at idle for at least one minute.
Judgement Stall Test
O: Stall speed within standard value position
H: Stall speed higher than standard value
L: Stall speed lower than standard value
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 A/T fluid reaches in range of 50 to 80°C (122
to 176°F), then inspect the amount of A/T fluid 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 front propeller shaft from vehicle (with AWD models). Refer to PR-4, "
Removal and Installation" . Stall speed:
VQ35DE engine: 2,650 - 2,950 rpm
VK45DE engine: 2,300 - 2,600 rpm
Selector lever position
Expected problem location
D, M R
Stall speedHO

Forward brake

Forward one-way clutch

1st one-way clutch

3rd one-way clutch
OH

Reverse brake
LL

Engine and torque converter one-way clutch
HH

Line pressure low
Does not shift up D, M position 1 → 2 Slipping in 2nd, 3rd, 4th gears Direct clutch slippage
Does not shift up D, M position 2 → 3 Slipping in 3rd, 4th, 5th gears high and low reverse clutch slippage
Does not shift up D, M position 3 → 4 Slipping in 4th, 5th gears Input clutch slippage
Does not shift up D, M position 4 → 5 Slipping in 5th gear Front brake slippage
SCIA2187E

TROUBLE DIAGNOSIS
AT-53
D
E
F
G
H
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K
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MA
B
AT
Revision: 2004 November 2004 FX35/FX45
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.
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 1 , "
STALL TEST" .
7. After the measurements are complete, install the oil pressure
detection plug and tighten to the regulation torque below.
CAUTION:
Do not reuse the O-ring.
Line Pressure
SCIA5309E
SCIA1224E
:7.3 N·m (0.74 kg-m, 65 in-lb)SAT493G
Engine speedLine pressure [kPa (kg/cm
2 , psi)]
R position D, M positions
At idle speed 392 - 441 (4.0 - 4.5, 57 - 64) 373 - 422 (3.8 - 4.3, 54 - 61)
At stall speed 1,700 - 1,890 (17.3 - 19.3, 247 - 274) 1,310 - 1,500 (13.3 - 15.3, 190 - 218)

TROUBLE DIAGNOSIS
AT-67
D
E
F
G
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MA
B
AT
Revision: 2004 November 2004 FX35/FX45
6
Shift
ShockShock is too large for
downshift when accel-
erator pedal is
pressed.ON vehicle1. Accelerator pedal position sensorAT-136
2. Control linkage adjustmentAT-234
3. CAN communication lineAT-105
4. Engine speed signalAT-121
5. Turbine revolution sensorAT-143
6. Vehicle speed sensor A/T and vehicle speed sensor MTRAT- 11 6,
AT-145
7. Fluid level and stateAT- 5 1
8. Control valve with TCMAT-242
OFF vehicle9. Front brake (brake band)AT-27410. Input clutch AT-308
11. High and low reverse clutchAT-320
12. Direct clutchAT-323
7Shock is too large for
upshift when acceler-
ator pedal is released.ON vehicle1. Accelerator pedal position sensorAT-136
2. Control linkage adjustmentAT-234
3. Engine speed signalAT-121
4. CAN communication lineAT-105
5. Turbine revolution sensorAT-143
6. Vehicle speed sensor A/T and vehicle speed sensor MTRAT- 11 6,
AT-145
7. Fluid level and stateAT- 5 1
8. Control valve with TCMAT-242
OFF vehicle9. Front brake (brake band)AT-27410. Input clutch AT-308
11. High and low reverse clutch AT-320
12. Direct clutch AT-323
8Shock is too large for
lock-up.ON vehicle1. Accelerator pedal position sensorAT-136
2. Control linkage adjustmentAT-234
3. Engine speed signalAT-121
4. CAN communication lineAT-105
5. Turbine revolution sensorAT-143
6. Vehicle speed sensor A/T and vehicle speed sensor MTRAT- 11 6,
AT-145
7. Torque converter clutch solenoid valveAT-123
8. Fluid level and stateAT- 5 1
9. Control valve with TCMAT-242
OFF vehicle 10. Torque converterAT-286
No. Items Symptom Condition Diagnostic ItemReference
page

TROUBLE DIAGNOSIS
AT-73
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B
AT
Revision: 2004 November 2004 FX35/FX45
23
Slips/Will
Not
EngageVehicle cannot be
started from D
1 .
Refer to AT-203,
"Vehicle Cannot Be
Started From D1" .ON vehicle1. Fluid level and stateAT- 5 1
2. Accelerator pedal position sensorAT-136
3. Line pressure testAT- 5 2
4. CAN communication lineAT-105
5. Control valve with TCMAT-242
OFF vehicle6. Torque converterAT-286
7. Oil pump assemblyAT-303
8. 3rd one-way clutchAT-306
9. 1st one-way clutch AT-314
10. Gear systemAT-274
11. Reverse brakeAT-286
12. Forward one-way clutch (Parts behind drum support is
impossible to perform inspection by disassembly. Refer to
AT- 1 7 , "
Cross-Sectional View (2WD Models)" or AT- 1 8 ,
"Cross-Sectional View (AWD Models)" )AT-286
13. Forward brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to AT-17,
"Cross-Sectional View (2WD Models)" or AT-18, "Cross-
Sectional View (AWD Models)" )AT-286
24Does not lock-up.
Refer to AT-216, "A/T
Does Not Perform
Lock-up" .ON vehicle1. Fluid level and stateAT- 5 1
2. Line pressure testAT- 5 2
3. Engine speed signalAT-121
4. Turbine revolution sensorAT-143
5. Torque converter clutch solenoid valveAT-123
6. CAN communication lineAT-105
7. Control valve with TCMAT-242
OFF vehicle8. Torque converterAT-2869. Oil pump assemblyAT-303
25Does not hold lock-up
condition.
Refer to AT-218, "A/T
Does Not Hold Lock-
up Condition" .ON vehicle1. Fluid level and stateAT- 5 1
2. Line pressure testAT- 5 2
3. Engine speed signalAT-121
4. Turbine revolution sensorAT-143
5. Torque converter clutch solenoid valveAT-123
6. CAN communication lineAT-105
7. Control valve with TCMAT-242
OFF vehicle8. Torque converterAT-2869. Oil pump assemblyAT-303
No. Items Symptom Condition Diagnostic ItemReference
page

AT-74
TROUBLE DIAGNOSIS
Revision: 2004 November 2004 FX35/FX45
26
Slips/Will
Not
engageLock-up is not
released.
Refer to AT-220,
"Lock-up Is Not
Released" .ON vehicle1. Fluid level and stateAT- 5 1
2. Line pressure testAT- 5 2
3. Engine speed signalAT- 1 2 1
4. Turbine revolution sensorAT- 1 4 3
5. Torque converter clutch solenoid valveAT- 1 2 3
6. CAN communication lineAT- 1 0 5
7. Control valve with TCMAT- 2 4 2
OFF vehicle8. Torque converterAT- 2 8 69. Oil pump assemblyAT- 3 0 3
27No shock at all or the
clutch slips when
vehicle changes
speed D
1 → D2 or
M
1 → M2 . ON vehicle1. Fluid level and stateAT- 5 1
2. Vehicle speed sensor A/T and vehicle speed sensor MTRAT- 11 6,
AT- 1 4 5
3. ATF pressure switch 5 and direct clutch solenoid valveAT- 1 8 2,
AT- 1 6 0
4. CAN communication lineAT- 1 0 5
5. Line pressure testAT- 5 2
6. Control valve with TCMAT- 2 4 2
OFF vehicle7. Torque converterAT- 2 8 6
8. Oil pump assemblyAT- 3 0 3
9. 3rd one-way clutchAT- 3 0 6
10. Gear systemAT- 2 7 4
11. Direct clutchAT- 3 2 3
12. Forward brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to AT-17,
"Cross-Sectional View (2WD Models)" or AT- 1 8 , "Cross-
Sectional View (AWD Models)" )AT- 2 8 6
No. Items Symptom Condition Diagnostic ItemReference
page

TROUBLE DIAGNOSIS
AT-75
D
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AT
Revision: 2004 November 2004 FX35/FX45
28
Slips/Will
Not
engageNo shock at all or the
clutch slips when
vehicle changes
speed D
2 → D3 or
M
2 → M3 .ON vehicle1. Fluid level and stateAT- 5 1
2. Vehicle speed sensor A/T and vehicle speed sensor MTRAT- 11 6,
AT-145
3. ATF pressure switch 6, high and low reverse clutch sole-
noid valveAT-184,
AT-164
4. CAN communication lineAT-105
5. Line pressure testAT- 5 2
6. Control valve with TCMAT-242
OFF vehicle7. Torque converterAT-286
8. Oil pump assemblyAT-303
9. 3rd one-way clutchAT-306
10. Gear systemAT-274
11. High and low reverse clutchAT-320
12. Forward one-way clutch (Parts behind drum support is
impossible to perform inspection by disassembly. Refer to
AT- 1 7 , "
Cross-Sectional View (2WD Models)" or AT- 1 8 ,
"Cross-Sectional View (AWD Models)" )AT-286
13. Forward brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to AT-17,
"Cross-Sectional View (2WD Models)" or AT-18, "Cross-
Sectional View (AWD Models)" )AT-286
29No shock at all or the
clutch slips when
vehicle changes
speed D
3 → D4 or
M
3 → M4 .ON vehicle1. Fluid level and stateAT- 5 1
2. Vehicle speed sensor A/T and vehicle speed sensor MTRAT- 11 6,
AT-145
3. ATF pressure switch 3 and input clutch solenoid valveAT-180,
AT-152

4. ATF pressure switch 1 and front brake solenoid valveAT-178
,
AT-156
5. CAN communication lineAT-105
6. Line pressure testAT- 5 2
7. Control valve with TCMAT-242
OFF vehicle8. Torque converterAT-286
9. Oil pump assemblyAT-303
10. Input clutchAT-308
11. Gear systemAT-274
12. High and low reverse clutchAT-320
13. Direct clutchAT-323
No. Items Symptom Condition Diagnostic ItemReference
page

AT-76
TROUBLE DIAGNOSIS
Revision: 2004 November 2004 FX35/FX45
30
Slips/Will
Not
engageNo shock at all or the
clutch slips when
vehicle changes
speed D
4 → D5 or
M
4 → M5 .ON vehicle1. Fluid level and stateAT- 5 1
2. Vehicle speed sensor A/T and vehicle speed sensor MTRAT- 11 6,
AT- 1 4 5
3. ATF pressure switch 1 and front brake solenoid valveAT- 1 7 8,
AT- 1 5 6
4. ATF pressure switch 5 and direct clutch solenoid valveAT- 1 8 2,
AT- 1 6 0
5. CAN communication lineAT- 1 0 5
6. Line pressure testAT- 5 2
7. Control valve with TCMAT- 2 4 2
OFF vehicle8. Torque converterAT- 2 8 6
9. Oil pump assemblyAT- 3 0 3
10. Front brake (brake band)AT- 2 8 6
11. Input clutchAT- 3 0 8
12. Gear systemAT- 2 7 4
13. High and low reverse clutchAT- 3 2 0
31When you press the
accelerator pedal and
shift speed D5 → D4
or M
5 → M4 the
engine idles or the
transmission slips.ON vehicle1. Fluid level and stateAT- 5 1
2. Vehicle speed sensor A/T and vehicle speed sensor MTRAT- 11 6,
AT- 1 4 5
3. ATF pressure switch 1 and front brake solenoid valveAT- 1 7 8,
AT- 1 5 6
4. ATF pressure switch 5 and direct clutch solenoid valveAT- 1 8 2,
AT- 1 6 0
5. CAN communication lineAT- 1 0 5
6. Line pressure testAT- 5 2
7. Control valve with TCMAT- 2 4 2
OFF vehicle8. Torque converterAT- 2 8 6
9. Oil pump assemblyAT- 3 0 3
10. Input clutchAT- 3 0 8
11. Gear systemAT- 2 7 4
12. High and low reverse clutchAT- 3 2 0
13. Direct clutchAT- 3 2 3
No. Items Symptom Condition Diagnostic ItemReference
page

TROUBLE DIAGNOSIS
AT-77
D
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AT
Revision: 2004 November 2004 FX35/FX45
32
Slips/Will
Not
engageWhen you press the
accelerator pedal and
shift speed D4 → D3
or M
4 → M3 the
engine idles or the
transmission slips.ON vehicle1. Fluid level and stateAT- 5 1
2. Vehicle speed sensor A/T and vehicle speed sensor MTRAT- 11 6,
AT-145
3. ATF pressure switch 3 and input clutch solenoid valveAT-180,
AT-152
4. ATF pressure switch 1 and front brake solenoid valveAT-178,
AT-156
5. CAN communication lineAT-105
6. Line pressure testAT- 5 2
7. Control valve with TCMAT-242
OFF vehicle8. Torque converterAT-286
9. Oil pump assemblyAT-303
10. 3rd one-way clutchAT-306
11. Gear systemAT-274
12. High and low reverse clutchAT-320
13. Forward one-way clutch (Parts behind drum support is
impossible to perform inspection by disassembly. Refer to
AT- 1 7 , "
Cross-Sectional View (2WD Models)" or AT- 1 8 ,
"Cross-Sectional View (AWD Models)" )AT-286
14. Forward brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to AT-17,
"Cross-Sectional View (2WD Models)" or AT-18, "Cross-
Sectional View (AWD Models)" )AT-286
33When you press the
accelerator pedal and
shift speed D3 → D2
or M
3 → M2 the
engine idles or the
transmission slips.ON vehicle1. Fluid level and stateAT- 5 1
2. Vehicle speed sensor A/T and vehicle speed sensor MTRAT- 11 6,
AT-145
3. ATF pressure switch 6, high and low reverse clutch sole-
noid valveAT-184,
AT-164
4. ATF pressure switch 5 and direct clutch solenoid valveAT-182,
AT-160
5. CAN communication lineAT-105
6. Line pressure testAT- 5 2
7. Control valve with TCMAT-242
OFF vehicle8. Torque converterAT-286
9. Oil pump assemblyAT-303
10. 3rd one-way clutch AT-306
11. Gear systemAT-274
12. Direct clutchAT-323
13. Forward brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to AT-17,
"Cross-Sectional View (2WD Models)" or AT-18, "Cross-
Sectional View (AWD Models)" )AT-286
No. Items Symptom Condition Diagnostic ItemReference
page