2008 INFINITI FX35 section pg
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AT-64
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
18Slips/Will
Not En-
gage When “D” or “M” posi-
tion, remains in 1st
gear. 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. Line pressure test AT- 4 9
5. CAN communication lineAT- 9 4
6. Control valve with TCMAT- 2 1 5
OFF vehicle7. 3rd one-way clutch
AT- 2 8 7
8. 1st one-way clutchAT- 2 9 5
9. Gear systemAT- 2 4 9
10. Reverse brakeAT- 2 6 7
11. 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
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
No. Items Symptom Condition Diagnostic Item
Reference
page
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C
Page 138 of 3924
TROUBLE DIAGNOSISAT-65
< SERVICE INFORMATION >
DE
F
G H
I
J
K L
M A
B
AT
N
O P
19
Slips/Will
Not En-
gage When “D” or “M” posi-
tion, remains in 2nd
gear.
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. Low coast brake solenoid valve AT- 1 5 1
4. Line pressure test AT- 4 9
5. CAN communication lineAT- 9 4
6. Control valve with TCMAT- 2 1 5
OFF vehicle7. 3rd one-way clutch
AT- 2 8 7
8. Gear systemAT- 2 4 9
9. Direct clutchAT- 3 0 3
10. 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
20
When “D” or “M” posi-
tion, remains in 3rd
gear. 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. Line pressure test AT- 4 9
4. CAN communication lineAT- 9 4
5. Control valve with TCMAT- 2 1 5
OFF vehicle6. 3rd one-way clutch
AT- 2 8 7
7. Gear systemAT- 2 4 9
8. High and low reverse clutchAT- 3 0 1
9. 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
10. 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 140 of 3924
TROUBLE DIAGNOSISAT-67
< SERVICE INFORMATION >
DE
F
G H
I
J
K L
M A
B
AT
N
O P
23
Slips/Will
Not En-
gage Vehicle cannot be
started from D
1.
Refer to AT- 1 8 0 , "
Ve-
hicle Cannot Be Start-
ed from D1". ON vehicle
1. A/T fluid level and state
AT- 4 9
2. Accelerator pedal position sensorAT- 1 3 0
3. Line pressure test AT- 4 9
4. CAN communication lineAT- 9 4
5. Control valve with TCMAT- 2 1 5
OFF vehicle6. Torque converter
AT- 2 6 7
7. Oil pump assemblyAT- 2 8 5
8. 3rd one-way clutchAT- 2 8 7
9. 1st one-way clutch AT- 2 9 5
10. Gear systemAT- 2 4 9
11. Reverse brakeAT- 2 6 7
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
24
Does not lock-up.
Refer to
AT- 1 9 0 , "A/T
Does Not Lock-up".ON vehicle 1. A/T fluid level and state
AT- 4 9
2. Line pressure testAT- 4 9
3. Engine speed signalAT- 11 2
4. Turbine revolution sensorAT- 1 0 6
5. Torque converter clutch solenoid valveAT- 1 2 4
6. CAN communication line AT- 9 4
7. Control valve with TCMAT- 2 1 5
OFF vehicle8. Torque converter
AT- 2 6 79. Oil pump assemblyAT- 2 8 5
25Does not hold lock-up
condition.
Refer to
AT- 1 9 2 , "A/T
Does Not Hold Lock-
up Condition". ON vehicle 1. A/T fluid level and state
AT- 4 9
2. Line pressure testAT- 4 9
3. Engine speed signalAT- 11 2
4. Turbine revolution sensorAT- 1 0 6
5. Torque converter clutch solenoid valveAT- 1 2 4
6. CAN communication line AT- 9 4
7. Control valve with TCMAT- 2 1 5
OFF vehicle8. Torque converter
AT- 2 6 79. Oil pump assemblyAT- 2 8 5
No. Items Symptom Condition Diagnostic Item Reference
page
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C
Page 141 of 3924
AT-68
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
26Slips/Will
Not En-
gage Lock-up is not re-
leased.
Refer to
AT- 1 9 4 ,
"Lock-up Is Not Re-
leased". ON vehicle1. A/T fluid level and state
AT- 4 9
2. Line pressure testAT- 4 9
3. Engine speed signalAT- 11 2
4. Turbine revolution sensorAT- 1 0 6
5. Torque converter clutch solenoid valveAT- 1 2 4
6. CAN communication line AT- 9 4
7. Control valve with TCMAT- 2 1 5
OFF vehicle8. Torque converter
AT- 2 6 79. Oil pump assemblyAT- 2 8 5
27No shock at all or the
clutch slips when vehi-
cle changes speed D1
→ D
2 or M1 → M2. 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. 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
No. Items Symptom Condition Diagnostic Item
Reference
page
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C
Page 142 of 3924
TROUBLE DIAGNOSISAT-69
< SERVICE INFORMATION >
DE
F
G H
I
J
K L
M A
B
AT
N
O P
28
Slips/Will
Not En-
gage No shock at all or the
clutch slips when vehi-
cle changes speed D2
→ D
3 or M2 → M3. 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. High and low reverse clutch solenoid valve AT- 1 4 9
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. 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
29
No shock at all or the
clutch slips when vehi-
cle changes speed D3
→ D
4 or M3 → M4. 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.Input clutch solenoid valve AT- 1 4 3
4. Front brake solenoid valve AT- 1 4 5
5. CAN communication line AT- 9 4
6. Line pressure testAT- 4 9
7. Control valve with TCMAT- 2 1 5
OFF vehicle8. Torque converter
AT- 2 6 7
9. Oil pump assemblyAT- 2 8 5
10. Input clutchAT- 2 8 9
11. Gear systemAT- 2 4 9
12. High and low reverse clutchAT- 3 0 1
13. Direct clutchAT- 3 0 3
No. Items Symptom Condition Diagnostic Item Reference
page
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C
Page 144 of 3924
TROUBLE DIAGNOSISAT-71
< SERVICE INFORMATION >
DE
F
G H
I
J
K L
M A
B
AT
N
O P
32
Slips/Will
Not En-
gage When pressing the ac-
celerator pedal and
shifting speed D4
→
D
3 or M4 → M3 the en-
gine 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. Input clutch solenoid valve AT- 1 4 3
4. Front brake solenoid valveAT- 1 4 5
5. CAN communication line AT- 9 4
6. Line pressure testAT- 4 9
7. Control valve with TCMAT- 2 1 5
OFF vehicle8. Torque converter
AT- 2 6 7
9. Oil pump assemblyAT- 2 8 5
10. 3rd one-way clutchAT- 2 8 7
11. Gear systemAT- 2 4 9
12. High and low reverse clutchAT- 3 0 1
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
33When pressing the ac-
celerator pedal and
shifting speed D3
→
D
2 or M3 → M2 the en-
gine 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. High and low reverse clutch solenoid valve AT- 1 4 9
4.Direct clutch solenoid valveAT- 1 4 7
5. CAN communication line AT- 9 4
6. Line pressure testAT- 4 9
7. Control valve with TCMAT- 2 1 5
OFF vehicle8. Torque converter
AT- 2 6 7
9. Oil pump assemblyAT- 2 8 5
10. 3rd one-way clutch AT- 2 8 7
11. Gear systemAT- 2 4 9
12. Direct clutchAT- 3 0 3
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 145 of 3924
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
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/T fluid level and state
AT- 4 9
2. Line pressure testAT- 4 9
3. Accelerator pedal position sensorAT- 1 3 0
4. High and low reverse clutch solenoid valveAT- 1 4 9
5. CAN communication line AT- 9 4
6. PNP switchAT- 1 0 2
7. A/T positionAT- 2 0 7
8. Control valve with TCMAT- 2 1 5
OFF vehicle9. Gear system
AT- 2 4 910. Output shaft AT- 2 6 7
11. Reverse brakeAT- 2 6 7
37While starting off by
accelerating in 1st, en-
gine 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. Control valve with TCMAT- 2 1 5
OFF vehicle6. Torque converter
AT- 2 6 7
7. Oil pump assemblyAT- 2 8 5
8. 3rd one-way clutchAT- 2 8 7
9. 1st one-way clutchAT- 2 9 5
10. Gear systemAT- 2 4 9
11. Reverse brakeAT- 2 6 7
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