Infiniti Q45. Manual - part 39
TROUBLE DIAGNOSIS
AT-69
D
E
F
G
H
I
J
K
L
M
A
B
AT
26
Slips/Will
Not
Engage
Lock-up is not
released.
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
vehicle changes
speed D
1
→
D
2
or
M
1
→
M
2
.
ON vehicle
1. A/T fluid level and state
2. Vehicle speed sensor·A/T and vehicle speed sensor·MTR
3. ATF pressure switch 5 and 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
28
No shock at all or the
clutch slips when
vehicle changes
speed D
2
→
D
3
or
M
2
→
M
3
.
ON vehicle
1. A/T fluid level and state
2. Vehicle speed sensor·A/T and vehicle speed sensor·MTR
3. ATF pressure switch 6, high and low reverse clutch sole-
noid 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
impossible to perform inspection by disassembly. Refer to
13. Forward brake (Parts behind drum support is impossible
to perform inspection by disassembly. Refer to
No.
Items
Symptom
Condition
Diagnostic Item
Reference
page