2008 INFINITI FX35 Service Manual

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Page 145 of 3924

INFINITI FX35 2008 Service Manual
AT-72
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
34Slips/Will
Not En-
gage When pressing the ac-
celerator pedal and
shifting speed D2
→
D
1 or M2 → M1 the
engine idles or the A/T
slips. O

AT-72
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
34Slips/Will
Not En-
gage When pressing the ac-
celerator 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- 4 9
2. Vehicle speed sensor A/T and vehicle speed sensor MTRAT- 1 0 8,
AT- 1 3 7
3. Direct clutch solenoid valve AT- 1 4 7
4. CAN communication line AT- 9 4
5. Line pressure testAT- 4 9
6. Control valve with TCMAT- 2 1 5
OFF vehicle7. Torque converter
AT- 2 6 7
8. Oil pump assemblyAT- 2 8 5
9. 3rd one-way clutchAT- 2 8 7
10. 1st one-way clutchAT- 2 9 5
11. Gear systemAT- 2 4 9
12. Reverse brakeAT- 2 6 7
13. Forward one-way clutch (Parts behind drum support is im-
possible to perform inspection by disassembly. Refer to AT-
16, "Cross-Sectional View (2WD Models)", AT- 1 7 , "Cross-
Sectional View (VQ35DE Models for AWD)" or AT- 1 8 , "Cross-
Sectional View (VK45DE Models for AWD)") AT- 2 6 7
14. Forward brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to
AT- 1 6 , "
Cross-
Sectional View (2WD Models)", AT- 1 7 , "Cross-Sectional View
(VQ35DE Models for AWD)" or AT- 1 8 , "Cross-Sectional View
(VK45DE Models for AWD)") AT- 2 6 7
35
With selector lever in
“D” position, accelera-
tion is extremely poor. ON vehicle
1. A/T fluid level and state
AT- 4 9
2. Line pressure testAT- 4 9
3. Accelerator pedal position sensorAT- 1 3 0
4. CAN communication line AT- 9 4
5. PNP switchAT- 1 0 2
6. A/T positionAT- 2 0 7
7. Control valve with TCMAT- 2 1 5
OFF vehicle8. Torque converter
AT- 2 6 7
9. Oil pump assemblyAT- 2 8 5
10. 1st one-way clutchAT- 2 9 5
11. Gear systemAT- 2 4 9
12. Reverse brakeAT- 2 6 7
13. Forward one-way clutch (Parts behind drum support is im-
possible to perform inspection by disassembly. Refer to AT-
16, "Cross-Sectional View (2WD Models)", AT- 1 7 , "Cross-
Sectional View (VQ35DE Models for AWD)" or AT- 1 8 , "Cross-
Sectional View (VK45DE Models for AWD)") AT- 2 6 7
14. Forward brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to
AT- 1 6 , "
Cross-
Sectional View (2WD Models)", AT- 1 7 , "Cross-Sectional View
(VQ35DE Models for AWD)" or AT- 1 8 , "Cross-Sectional View
(VK45DE Models for AWD)") AT- 2 6 7
No. Items Symptom Condition Diagnostic Item
Reference
page
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

Page 146 of 3924

INFINITI FX35 2008 Service Manual
TROUBLE DIAGNOSISAT-73
< SERVICE INFORMATION >
DE
F
G H
I
J
K L
M A
B
AT
N
O P
36
Slips/Will
Not En-
gage With selector lever in
“R” position
, accelera-
tion is extremely poor. ON vehicle1. A/

Page 147 of 3924

INFINITI FX35 2008 Service Manual
AT-74
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
38Slips/Will
Not En-
gage While accelerating in
2nd, engine races or
slippage occurs.
ON vehicle
1. A/T fluid level and state
AT- 4 9
2. Line pressu

AT-74
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
38Slips/Will
Not En-
gage While accelerating in
2nd, engine races or
slippage occurs.
ON vehicle
1. A/T fluid level and state
AT- 4 9
2. Line pressure testAT- 4 9
3. Accelerator pedal position sensorAT- 1 3 0
4. CAN communication line AT- 9 4
5. Direct clutch solenoid valveAT- 1 4 7
6. Control valve with TCMAT- 2 1 5
OFF vehicle7. Torque converter
AT- 2 6 7
8. Oil pump assemblyAT- 2 8 5
9. 3rd one-way clutchAT- 2 8 7
10. Gear systemAT- 2 4 9
11. Direct clutchAT- 3 0 3
12. Forward brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to AT- 1 6 , "
Cross-
Sectional View (2WD Models)", AT- 1 7 , "Cross-Sectional View
(VQ35DE Models for AWD)" or AT- 1 8 , "Cross-Sectional View
(VK45DE Models for AWD)") AT- 2 6 7
39
While accelerating in
3rd, engine races or
slippage occurs. ON vehicle
1. A/T fluid level and state
AT- 4 9
2. Line pressure testAT- 4 9
3. Accelerator pedal position sensorAT- 1 3 0
4. CAN communication line AT- 9 4
5. High and low reverse clutch solenoid valveAT- 1 4 9
6. Control valve with TCM AT- 2 1 5
OFF vehicle7. Torque converter
AT- 2 6 7
8. Oil pump assemblyAT- 2 8 5
9. 3rd one-way clutchAT- 2 8 7
10. Gear systemAT- 2 4 9
11. High and low reverse clutchAT- 3 0 1
12. Forward one-way clutch (Parts behind drum support is im-
possible to perform inspection by disassembly. Refer to AT-
16, "Cross-Sectional View (2WD Models)", AT- 1 7 , "Cross-
Sectional View (VQ35DE Models for AWD)" or AT- 1 8 , "Cross-
Sectional View (VK45DE Models for AWD)") AT- 2 6 7
13. Forward brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to
AT- 1 6 , "
Cross-
Sectional View (2WD Models)", AT- 1 7 , "Cross-Sectional View
(VQ35DE Models for AWD)" or AT- 1 8 , "Cross-Sectional View
(VK45DE Models for AWD)") AT- 2 6 7
No. Items Symptom Condition Diagnostic Item
Reference
page
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

Page 148 of 3924

INFINITI FX35 2008 Service Manual
TROUBLE DIAGNOSISAT-75
< SERVICE INFORMATION >
DE
F
G H
I
J
K L
M A
B
AT
N
O P
40
Slips/Will
Not En-
gage While accelerating in
4th, engine races or
slippage occurs.
ON vehicle
1. A/T fluid level

Page 149 of 3924

INFINITI FX35 2008 Service Manual
AT-76
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
43Slips/Will
Not En-
gage No creep at all.
Refer to
AT- 1 7 5 , "
Ve-
hicle Does Not Creep
Backward in "R" Posi-
tion", AT- 1 7 8 , "Vehicle
Doe

Page 150 of 3924

INFINITI FX35 2008 Service Manual
TROUBLE DIAGNOSISAT-77
< SERVICE INFORMATION >
DE
F
G H
I
J
K L
M A
B
AT
N
O P
45
Slips/Will
Not En-
gage With selector lever in
“D” position, driving is
not possible. ON vehicle
1. A/T fluid

Page 151 of 3924

INFINITI FX35 2008 Service Manual
AT-78
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
48Does Not
Change Does not change M4
→
M3.
Refer to AT- 1 9 7 , "A/T
Does Not Shift: 4th
Gear → 3rd Gear".ON vehicle 1. PNP switch
AT- 1 0 2

Page 152 of 3924

INFINITI FX35 2008 Service Manual
TROUBLE DIAGNOSISAT-79
< SERVICE INFORMATION >
DE
F
G H
I
J
K L
M A
B
AT
N
O P
53
Others Shift point is low in “D”
position.
ON vehicle1. Vehicle speed sensor A/T and vehicle speed sensor MTR
AT

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