Infiniti FX35 / FX45. Manual — part 35
AT-68
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
26
Slips/Will
Not En-
gage
Lock-up is not re-
leased.
Refer to
.
ON vehicle
1. A/T fluid level and state
2. Line pressure test
3. Engine speed signal
4. Turbine revolution sensor
5. Torque converter clutch solenoid valve
6. CAN communication line
7. Control valve with TCM
OFF vehicle
8. Torque converter
9. Oil pump assembly
27
No shock at all or the
clutch slips when vehi-
cle changes speed D
1
→
D
2
or M1
→
M2.
ON vehicle
1. A/T fluid level and state
2. Vehicle speed sensor A/T and vehicle speed sensor MTR
3. Direct clutch solenoid valve
4. CAN communication line
5. Line pressure test
6. Control valve with TCM
OFF vehicle
7. Torque converter
8. Oil pump assembly
9. 3rd one-way clutch
10. Gear system
11. Direct clutch
12. Forward brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to
No.
Items
Symptom
Condition
Diagnostic Item
Reference
page
TROUBLE DIAGNOSIS
AT-69
< SERVICE INFORMATION >
D
E
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 D
2
→
D
3
or M2
→
M3.
ON vehicle
1. A/T fluid level and state
2. Vehicle speed sensor A/T and vehicle speed sensor MTR
3. High and low reverse clutch solenoid valve
4. CAN communication line
5. Line pressure test
6. Control valve with TCM
OFF vehicle
7. Torque converter
8. Oil pump assembly
9. 3rd one-way clutch
10. Gear system
11. High and low reverse clutch
12. Forward one-way clutch (Parts behind drum support is im-
possible to perform inspection by disassembly. Refer to
16, "Cross-Sectional View (2WD Models)"
Sectional View (VQ35DE Models for AWD)"
Sectional View (VK45DE Models for AWD)"
13. Forward brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to
)
29
No shock at all or the
clutch slips when vehi-
cle changes speed D
3
→
D
4
or M3
→
M4.
ON vehicle
1. A/T fluid level and state
2. Vehicle speed sensor A/T and vehicle speed sensor MTR
3.Input clutch solenoid valve
4. Front brake solenoid valve
5. CAN communication line
6. Line pressure test
7. Control valve with TCM
OFF vehicle
8. Torque converter
9. Oil pump assembly
10. Input clutch
11. Gear system
12. High and low reverse clutch
13. Direct clutch
No.
Items
Symptom
Condition
Diagnostic Item
Reference
page
AT-70
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
30
Slips/Will
Not En-
gage
No shock at all or the
clutch slips when vehi-
cle changes speed D
4
→
D
5
or M4
→
M5.
ON vehicle
1. A/T fluid level and state
2. Vehicle speed sensor A/T and vehicle speed sensor MTR
3. Front brake solenoid valve
4. Direct clutch solenoid valve
5. CAN communication line
6. Line pressure test
7. Control valve with TCM
OFF vehicle
8. Torque converter
9. Oil pump assembly
10. Front brake (brake band)
11. Input clutch
12. Gear system
13. High and low reverse clutch
31
When you press the
accelerator pedal and
shift speed D
5
→
D
4
or
M5
→
M4 the engine
idles or the A/T slips.
ON vehicle
1. A/T fluid level and state
2. Vehicle speed sensor A/T and vehicle speed sensor MTR
3. Front brake solenoid valve
4. Direct clutch solenoid valve
5. CAN communication line
6. Line pressure test
7. Control valve with TCM
OFF vehicle
8. Torque converter
9. Oil pump assembly
10. Input clutch
11. Gear system
12. High and low reverse clutch
13. Direct clutch
No.
Items
Symptom
Condition
Diagnostic Item
Reference
page
TROUBLE DIAGNOSIS
AT-71
< SERVICE INFORMATION >
D
E
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 D
4
→
D
3
or M4
→
M3 the en-
gine idles or the A/T
slips.
ON vehicle
1. A/T fluid level and state
2. Vehicle speed sensor A/T and vehicle speed sensor MTR
3. Input clutch solenoid valve
4. Front brake solenoid valve
5. CAN communication line
6. Line pressure test
7. Control valve with TCM
OFF vehicle
8. Torque converter
9. Oil pump assembly
10. 3rd one-way clutch
11. Gear system
12. High and low reverse clutch
13. Forward one-way clutch (Parts behind drum support is im-
possible to perform inspection by disassembly. Refer to
16, "Cross-Sectional View (2WD Models)"
Sectional View (VQ35DE Models for AWD)"
Sectional View (VK45DE Models for AWD)"
14. Forward brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to
)
33
When pressing the ac-
celerator pedal and
shifting speed D
3
→
D
2
or M3
→
M2 the en-
gine idles or the A/T
slips.
ON vehicle
1. A/T fluid level and state
2. Vehicle speed sensor A/T and vehicle speed sensor MTR
3. High and low reverse clutch solenoid valve
4.Direct clutch solenoid valve
5. CAN communication line
6. Line pressure test
7. Control valve with TCM
OFF vehicle
8. Torque converter
9. Oil pump assembly
10. 3rd one-way clutch
11. Gear system
12. Direct clutch
13. Forward brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to
)
No.
Items
Symptom
Condition
Diagnostic Item
Reference
page
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