engine INFINITI FX35 2007 Repair Manual

TROUBLE DIAGNOSIS AT-73
D E
F
G H
I
J
K L
M A
B
AT
Revision: 2006 July 2007 FX35/FX4526
Slips/Will
Not
Engage Lock-up is not
released.
Refer to AT-217,
"Lock-up Is Not
Released" . ON vehicle 1. A/T fluid level and state
AT- 5 3
2. Line pressure testAT- 5 4
3. Engine speed signalAT-123
4. Turbine revolution sensor AT- 11 6
5. Torque converter clutch solenoid valveAT-125
6. CAN communication lineAT-104
7. Control valve with TCMAT-239
OFF vehicle 8. Torque converter
AT-2949. Oil pump assemblyAT-312
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 3
2. Vehicle speed sensor A/T and vehicle speed sensor MTR AT- 11 8,
AT-139
3. ATF pressure switch 5 and direct clutch solenoid valve AT-175,
AT-154
4. CAN communication line AT-104
5. Line pressure test AT- 5 4
6. Control valve with TCMAT-239
OFF vehicle 7. Torque converter
AT-294
8. Oil pump assemblyAT-312
9. 3rd one-way clutchAT-315
10. Gear systemAT-274
11. Direct clutchAT-332
12. Forward brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to AT-18,
"Cross-sectional View (2WD Models)" , AT- 1 9 , "Cross-sec-
tional View (VQ35DE Models for AWD)" or AT-20, "Cross-
sectional View (VK45DE Models for AWD)" ) AT-294
No. Items Symptom Condition Diagnostic Item
Reference
page

TROUBLE DIAGNOSIS AT-75
D E
F
G H
I
J
K L
M A
B
AT
Revision: 2006 July 2007 FX35/FX45
30
Slips/Will
Not
Engage No shock at all or the
clutch slips when
vehicle changes
speed D
4 → D5 or
M
4 → M5 . ON vehicle
1. A/T fluid level and state
AT- 5 3
2. Vehicle speed sensor A/T and vehicle speed sensor MTR AT- 11 8,
AT-139
3. ATF pressure switch 1 and front brake solenoid valve AT-171,
AT-150
4. ATF pressure switch 5 and direct clutch solenoid valve AT-175,
AT-154
5. CAN communication line AT-104
6. Line pressure test AT- 5 4
7. Control valve with TCMAT-239
OFF vehicle 8. Torque converter
AT-294
9. Oil pump assemblyAT-312
10. Front brake (brake band)AT-294
11. Input clutchAT-317
12. Gear systemAT-274
13. High and low reverse clutchAT-329
31 When you press the
accelerator pedal and
shift speed D5 → D4
or M
5 → M4 the
engine idles or the A/
T slips. ON vehicle
1. A/T fluid level and state
AT- 5 3
2. Vehicle speed sensor A/T and vehicle speed sensor MTR AT- 11 8,
AT-139
3. ATF pressure switch 1 and front brake solenoid valve AT-171,
AT-150
4. ATF pressure switch 5 and direct clutch solenoid valve AT-175,
AT-154
5. CAN communication line AT-104
6. Line pressure test AT- 5 4
7. Control valve with TCMAT-239
OFF vehicle 8. Torque converter
AT-294
9. Oil pump assemblyAT-312
10. Input clutchAT-317
11. Gear systemAT-274
12. High and low reverse clutchAT-329
13. Direct clutchAT-332
No. Items Symptom Condition Diagnostic Item Reference
page

AT-76
TROUBLE DIAGNOSIS
Revision: 2006 July 2007 FX35/FX45
32
Slips/Will
Not
Engage When pressing the
accelerator pedal and
shifting speed D4 →
D
3 or M4 → M3 the
engine idles or the A/
T slips. ON vehicle
1. A/T fluid level and state
AT- 5 3
2. Vehicle speed sensor A/T and vehicle speed sensor MTR AT- 11 8,
AT- 1 3 9
3. ATF pressure switch 3 and input clutch solenoid valve AT- 1 7 3,
AT- 1 4 6
4. ATF pressure switch 1 and front brake solenoid valve AT- 1 7 1,
AT- 1 5 0
5. CAN communication line AT- 1 0 4
6. Line pressure test AT- 5 4
7. Control valve with TCMAT- 2 3 9
OFF vehicle 8. Torque converter
AT- 2 9 4
9. Oil pump assemblyAT- 3 1 2
10. 3rd one-way clutchAT- 3 1 5
11. Gear systemAT- 2 7 4
12. High and low reverse clutchAT- 3 2 9
13. Forward one-way clutch (Parts behind drum support is
impossible to perform inspection by disassembly. Refer to
AT-18, "
Cross-sectional View (2WD Models)" , AT- 1 9 ,
"Cross-sectional View (VQ35DE Models for AWD)" or AT-
20, "Cross-sectional View (VK45DE Models for AWD)" ) AT- 2 9 4
14. Forward brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to AT-18,
"Cross-sectional View (2WD Models)" , AT-19, "Cross-sec-
tional View (VQ35DE Models for AWD)" or AT- 2 0 , "Cross-
sectional View (VK45DE Models for AWD)" ) AT- 2 9 4
33 When pressing the
accelerator pedal and
shifting speed D3 →
D
2 or M3 → M2 the
engine idles or the A/
T slips. ON vehicle
1. A/T fluid level and state
AT- 5 3
2. Vehicle speed sensor A/T and vehicle speed sensor MTR AT- 11 8,
AT- 1 3 9
3. ATF pressure switch 6, high and low reverse clutch sole-
noid valve AT- 1 7 7,
AT- 1 5 8
4. ATF pressure switch 5 and direct clutch solenoid valve AT- 1 7 5,
AT- 1 5 4
5. CAN communication line AT- 1 0 4
6. Line pressure test AT- 5 4
7. Control valve with TCMAT- 2 3 9
OFF vehicle 8. Torque converter
AT- 2 9 4
9. Oil pump assemblyAT- 3 1 2
10. 3rd one-way clutch AT- 3 1 5
11. Gear systemAT- 2 7 4
12. Direct clutchAT- 3 3 2
13. Forward brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to AT-18,
"Cross-sectional View (2WD Models)" , AT-19, "Cross-sec-
tional View (VQ35DE Models for AWD)" or AT- 2 0 , "Cross-
sectional View (VK45DE Models for AWD)" ) AT- 2 9 4
No. Items Symptom Condition Diagnostic Item
Reference
page

TROUBLE DIAGNOSIS AT-77
D E
F
G H
I
J
K L
M A
B
AT
Revision: 2006 July 2007 FX35/FX45
34
Slips/Will
Not
Engage When pressing the
accelerator pedal and
shifting speed D2 →
D
1 or M2 → M1 the
engine idles or the A/
T slips. ON vehicle
1. A/T fluid level and state
AT- 5 3
2. Vehicle speed sensor A/T and vehicle speed sensor MTR AT- 11 8,
AT-139
3. ATF pressure switch 5 and direct clutch solenoid valve AT-175,
AT-154
4. CAN communication line AT-104
5. Line pressure test AT- 5 4
6. Control valve with TCMAT-239
OFF vehicle 7. Torque converter
AT-294
8. Oil pump assemblyAT-312
9. 3rd one-way clutchAT-315
10. 1st one-way clutchAT-323
11. Gear systemAT-274
12. Reverse brakeAT-294
13. Forward one-way clutch (Parts behind drum support is
impossible to perform inspection by disassembly. Refer to
AT- 1 8 , "
Cross-sectional View (2WD Models)" , AT-19,
"Cross-sectional View (VQ35DE Models for AWD)" or AT-
20, "Cross-sectional View (VK45DE Models for AWD)" ) AT-294
14. Forward brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to AT-18,
"Cross-sectional View (2WD Models)" , AT- 1 9 , "Cross-sec-
tional View (VQ35DE Models for AWD)" or AT-20, "Cross-
sectional View (VK45DE Models for AWD)" ) AT-294
35
With selector lever in
“D” position, accelera-
tion is extremely poor. ON vehicle
1. A/T fluid level and state
AT- 5 3
2. Line pressure testAT- 5 4
3. Accelerator pedal position sensorAT-131
4. CAN communication lineAT-104
5. PNP switch AT- 11 2
6. A/T positionAT-231
7. Control valve with TCMAT-239
OFF vehicle 8. Torque converter
AT-294
9. Oil pump assemblyAT-312
10. 1st one-way clutchAT-323
11. Gear systemAT-274
12. Reverse brakeAT-294
13. Forward one-way clutch (Parts behind drum support is
impossible to perform inspection by disassembly. Refer to
AT- 1 8 , "
Cross-sectional View (2WD Models)" , AT-19,
"Cross-sectional View (VQ35DE Models for AWD)" or AT-
20, "Cross-sectional View (VK45DE Models for AWD)" ) AT-294
14. Forward brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to AT-18,
"Cross-sectional View (2WD Models)" , AT- 1 9 , "Cross-sec-
tional View (VQ35DE Models for AWD)" or AT-20, "Cross-
sectional View (VK45DE Models for AWD)" ) AT-294
No. Items Symptom Condition Diagnostic Item
Reference
page

AT-78
TROUBLE DIAGNOSIS
Revision: 2006 July 2007 FX35/FX45
36
Slips/Will
Not
Engage With selector lever in
“R” position, accelera-
tion is extremely poor. ON vehicle 1. A/T fluid level and state
AT- 5 3
2. Line pressure testAT- 5 4
3. Accelerator pedal position sensorAT- 1 3 1
4. ATF pressure switch 6, high and low reverse clutch sole-
noid valve AT- 1 7 7,
AT- 1 5 8
5. CAN communication line AT- 1 0 4
6. PNP switch AT- 11 2
7. A/T positionAT- 2 3 1
8. Control valve with TCMAT- 2 3 9
OFF vehicle 9. Gear system
AT- 2 7 410. Output shaft AT- 2 9 4
11. Reverse brakeAT- 2 9 4
37 While starting off by
accelerating in 1st,
engine races or slip-
page occurs. ON vehicle
1. A/T fluid level and state
AT- 5 3
2. Line pressure testAT- 5 4
3. Accelerator pedal position sensorAT- 1 3 1
4. CAN communication lineAT- 1 0 4
5. Control valve with TCMAT- 2 3 9
OFF vehicle 6. Torque converter
AT- 2 9 4
7. Oil pump assemblyAT- 3 1 2
8. 3rd one-way clutchAT- 3 1 5
9. 1st one-way clutchAT- 3 2 3
10. Gear systemAT- 2 7 4
11. Reverse brakeAT- 2 9 4
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)" , AT- 1 9 ,
"Cross-sectional View (VQ35DE Models for AWD)" or AT-
20, "Cross-sectional View (VK45DE Models for AWD)" ) AT- 2 9 4
13. Forward brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to AT-18,
"Cross-sectional View (2WD Models)" , AT-19, "Cross-sec-
tional View (VQ35DE Models for AWD)" or AT- 2 0 , "Cross-
sectional View (VK45DE Models for AWD)" ) AT- 2 9 4
No. Items Symptom Condition Diagnostic Item
Reference
page

TROUBLE DIAGNOSIS AT-79
D E
F
G H
I
J
K L
M A
B
AT
Revision: 2006 July 2007 FX35/FX45
38
Slips/Will
Not
Engage While accelerating in
2nd, engine races or
slippage occurs. ON vehicle
1. A/T fluid level and state
AT- 5 3
2. Line pressure testAT- 5 4
3. Accelerator pedal position sensorAT-131
4. CAN communication lineAT-104
5. ATF pressure switch 5 and direct clutch solenoid valve AT-175,
AT-154
6. Control valve with TCM AT-239
OFF vehicle 7. Torque converter
AT-294
8. Oil pump assemblyAT-312
9. 3rd one-way clutchAT-315
10. Gear systemAT-274
11. Direct clutchAT-332
12. Forward brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to AT-18,
"Cross-sectional View (2WD Models)" , AT- 1 9 , "Cross-sec-
tional View (VQ35DE Models for AWD)" or AT-20, "Cross-
sectional View (VK45DE Models for AWD)" ) AT-294
39
While accelerating in
3rd, engine races or
slippage occurs. ON vehicle
1. A/T fluid level and state
AT- 5 3
2. Line pressure testAT- 5 4
3. Accelerator pedal position sensorAT-131
4. CAN communication lineAT-104
5. ATF pressure switch 6, high and low reverse clutch sole-
noid valve AT-177,
AT-158

6. Control valve with TCM AT-239
OFF vehicle 7. Torque converter
AT-294
8. Oil pump assemblyAT-312
9. 3rd one-way clutchAT-315
10. Gear systemAT-274
11. High and low reverse clutchAT-329
12. Forward one-way clutch (Parts behind drum support is
impossible to perform inspection by disassembly. Refer to
AT- 1 8 , "
Cross-sectional View (2WD Models)" , AT-19,
"Cross-sectional View (VQ35DE Models for AWD)" or AT-
20, "Cross-sectional View (VK45DE Models for AWD)" ) AT-294
13. Forward brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to AT-18,
"Cross-sectional View (2WD Models)" , AT- 1 9 , "Cross-sec-
tional View (VQ35DE Models for AWD)" or AT-20, "Cross-
sectional View (VK45DE Models for AWD)" ) AT-294
No. Items Symptom Condition Diagnostic Item
Reference
page

AT-80
TROUBLE DIAGNOSIS
Revision: 2006 July 2007 FX35/FX45
40
Slips/Will
Not
Engage While accelerating in
4th, engine races or
slippage occurs. ON vehicle
1. A/T fluid level and state
AT- 5 3
2. Line pressure testAT- 5 4
3. Accelerator pedal position sensorAT- 1 3 1
4. CAN communication lineAT- 1 0 4
5. ATF pressure switch 3 and input clutch solenoid valve AT- 1 7 3,
AT- 1 4 6
6. Control valve with TCM AT- 2 3 9
OFF vehicle 7. Torque converter
AT- 2 9 4
8. Oil pump assemblyAT- 3 1 2
9. Input clutchAT- 3 1 7
10. Gear systemAT- 2 7 4
11. High and low reverse clutchAT- 3 2 9
12. Direct clutchAT- 3 3 2
41 While accelerating in
5th, engine races or
slippage occurs. ON vehicle
1. A/T fluid level and state
AT- 5 3
2. Line pressure testAT- 5 4
3. Accelerator pedal position sensorAT- 1 3 1
4. CAN communication lineAT- 1 0 4
5. ATF pressure switch 1 and front brake solenoid valve AT- 1 7 1,
AT- 1 5 0
6. Control valve with TCM AT- 2 3 9
OFF vehicle 7. Torque converter
AT- 2 9 4
8. Oil pump assembly AT- 3 1 2
9. Front brake (brake band)AT- 2 9 4
10. Input clutchAT- 3 1 7
11. Gear systemAT- 2 7 4
12. High and low reverse clutchAT- 3 2 9
42 Slips at lock-up. ON vehicle 1. A/T fluid level and state
AT- 5 3
2. Line pressure testAT- 5 4
3. Engine speed signalAT- 1 2 3
4. Turbine revolution sensor AT- 11 6
5. Torque converter clutch solenoid valveAT- 1 2 5
6. CAN communication lineAT- 1 0 4
7. Control valve with TCMAT- 2 3 9
OFF vehicle 8. Torque converter
AT- 2 9 49. Oil pump assemblyAT- 3 1 2
No. Items Symptom Condition Diagnostic Item Reference
page

AT-84
TROUBLE DIAGNOSIS
Revision: 2006 July 2007 FX35/FX45
53
Others Shift point is low in “D”
position. ON vehicle 1. Vehicle speed sensor A/T and vehicle speed sensor MTR
AT- 11 8
,
AT- 1 3 9
2. Accelerator pedal position sensor AT- 1 3 1
3. CAN communication lineAT- 1 0 4
4. Control valve with TCMAT- 2 3 9
54 Judder occurs during
lock-up. ON vehicle 1. A/T fluid level and state
AT- 5 3
2. Engine speed signalAT- 1 2 3
3. Turbine revolution sensor AT- 11 6
4. Vehicle speed sensor A/T and vehicle speed sensor MTR AT- 11 8,
AT- 1 3 9
5. Accelerator pedal position sensor AT- 1 3 1
6. CAN communication lineAT- 1 0 4
7. Torque converter clutch solenoid valveAT- 1 2 5
8. Control valve with TCMAT- 2 3 9
OFF vehicle 9. Torque converter AT- 2 9 4
55 Strange noise in “R”
position. ON vehicle
1. A/T fluid level and state
AT- 5 3
2. Engine speed signalAT- 1 2 3
3. CAN communication lineAT- 1 0 4
4. Control valve with TCMAT- 2 3 9
OFF vehicle 5. Torque converter
AT- 2 9 4
6. Oil pump assemblyAT- 3 1 2
7. Gear systemAT- 2 7 4
8. High and low reverse clutchAT- 3 2 9
9. Reverse brakeAT- 2 9 4
56 Strange noise in “N”
position. ON vehicle
1. A/T fluid level and state
AT- 5 3
2. Engine speed signalAT- 1 2 3
3. CAN communication lineAT- 1 0 4
4. Control valve with TCMAT- 2 3 9
OFF vehicle 5. Torque converter
AT- 2 9 46. Oil pump assemblyAT- 3 1 2
7. Gear systemAT- 2 7 4
No. Items Symptom Condition Diagnostic Item Reference
page

TROUBLE DIAGNOSIS AT-85
D E
F
G H
I
J
K L
M A
B
AT
Revision: 2006 July 2007 FX35/FX45
57
Others Strange noise in “D”
position. ON vehicle
1. A/T fluid level and state
AT- 5 3
2. Engine speed signalAT-123
3. CAN communication lineAT-104
4. Control valve with TCMAT-239
OFF vehicle 5. Torque converter
AT-294
6. Oil pump assemblyAT-312
7. Gear systemAT-274
8. Forward brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to AT-18,
"Cross-sectional View (2WD Models)" , AT- 1 9 , "Cross-sec-
tional View (VQ35DE Models for AWD)" or AT-20, "Cross-
sectional View (VK45DE Models for AWD)" ) AT-294
58 Vehicle does not
decelerate by engine
brake.
Refer to AT-227,
"Vehicle Does Not
Decelerate by Engine
Brake" . ON vehicle
1. PNP switch
AT- 11 2
2. A/T fluid level and state AT- 5 3
3. A/T positionAT-231
4. Manual mode switchAT-166
5. ATF pressure switch 5AT-175
6. CAN communication lineAT-104
7. Control valve with TCMAT-239
OFF vehicle 8. Input clutch
AT-3179. High and low reverse clutchAT-329
10. Direct clutchAT-332
59 Engine brake does
not work M5 → M4. ON vehicle 1. PNP switch
AT- 11 2
2. A/T fluid level and state AT- 5 3
3. A/T positionAT-231
4. Manual mode switchAT-166
5. ATF pressure switch 1AT-171
6. CAN communication lineAT-104
7. Control valve with TCMAT-239
OFF vehicle 8. Front brake (brake band) AT-294
60 Engine brake does
not work M4 → M3. ON vehicle 1. PNP switch
AT- 11 2
2. A/T fluid level and state AT- 5 3
3. A/T positionAT-231
4. Manual mode switchAT-166
5. ATF pressure switch 1 and ATF pressure switch 3 AT-171,
AT-173
6. CAN communication line AT-104
7. Control valve with TCMAT-239
OFF vehicle 8. Front brake (brake band)
AT-2949. Input clutchAT-317
No. Items Symptom Condition Diagnostic Item Reference
page

AT-86
TROUBLE DIAGNOSIS
Revision: 2006 July 2007 FX35/FX45
61
Others Engine brake does
not work M3 → M2. ON vehicle 1. PNP switch
AT- 11 2
2. A/T fluid level and state AT- 5 3
3. A/T positionAT- 2 3 1
4. Manual mode switchAT- 1 6 6
5. ATF pressure switch 6AT- 1 7 7
6. CAN communication lineAT- 1 0 4
7. Control valve with TCMAT- 2 3 9
OFF vehicle 8. Front brake (brake band)
AT- 2 9 49. Input clutchAT- 3 1 7
10. High and low reverse clutchAT- 3 2 9
62 Engine brake does
not work M2 → M1. ON vehicle 1. PNP switch
AT- 11 2
2. A/T fluid level and state AT- 5 3
3. A/T positionAT- 2 3 1
4. Manual mode switchAT- 1 6 6
5. ATF pressure switch 5AT- 1 7 5
6. CAN communication lineAT- 1 0 4
7. Control valve with TCMAT- 2 3 9
OFF vehicle 8. Input clutch
AT- 3 1 79. High and low reverse clutchAT- 3 2 9
10. Direct clutchAT- 3 3 2
63 Maximum speed low. ON vehicle
1. A/T fluid level and state
AT- 5 3
2. Line pressure testAT- 5 4
3. Accelerator pedal position sensorAT- 1 3 1
4. CAN communication lineAT- 1 0 4
5. Direct clutch solenoid valveAT- 1 5 4
6. Control valve with TCMAT- 2 3 9
OFF vehicle 7. Torque converter
AT- 2 9 4
8. Oil pump assemblyAT- 3 1 2
9. Input clutchAT- 3 1 7
10. Gear systemAT- 2 7 4
11. High and low reverse clutchAT- 3 2 9
12. Direct clutchAT- 3 3 2
13. Forward one-way clutch (Parts behind drum support is
impossible to perform inspection by disassembly. Refer to
AT-18, "
Cross-sectional View (2WD Models)" , AT- 1 9 ,
"Cross-sectional View (VQ35DE Models for AWD)" or AT-
20, "Cross-sectional View (VK45DE Models for AWD)" ) AT- 2 9 4
14. Forward brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to AT-18,
"Cross-sectional View (2WD Models)" , AT-19, "Cross-sec-
tional View (VQ35DE Models for AWD)" or AT- 2 0 , "Cross-
sectional View (VK45DE Models for AWD)" ) AT- 2 9 4
No. Items Symptom Condition Diagnostic Item
Reference
page