Infiniti F50. Manual — part 46
TROUBLE DIAGNOSIS
AT-69
D
E
F
G
H
I
J
K
L
M
A
B
AT
Lock-up is not
released.
Refer to
ON vehicle
1. 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 assembly
OFF vehicle
8. Torque converter (ATF condition “NG” only. Refer to
9. Oil pump assembly (ATF condition “NG” only. Refer to
.)
Does not change
M5
→
M4.
ON vehicle
1. PNP switch
2. Fluid level and state
3. Control linkage adjustment
4. Manual mode switch
5. ATF pressure switch 1
6. CAN communication line
7. Control valve assembly
OFF vehicle
8. Front brake [brake band (ATF condition “NG” only. Refer to
.)]
Does not change
M4
→
M3.
ON vehicle
1. PNP switch
2. Fluid level and state
3. Control linkage adjustment
4. Manual mode switch
5. ATF pressure switch 1 and ATF pressure switch 3
6. CAN communication line
7. Control valve assembly
OFF vehicle
8. Front brake [brake band (ATF condition “NG” only. Refer to
.)]
9. Input clutch (ATF condition “NG” only. Refer to
.)
Does not change
M3
→
M2.
ON vehicle
1. PNP switch
2. Fluid level and state
3. Control linkage adjustment
4. Manual mode switch
5. ATF pressure switch 6
6. CAN communication line
7. Control valve assembly
OFF vehicle
8. Front brake [brake band (ATF condition “NG” only. Refer to
.)]
9. Input clutch (ATF condition “NG” only. Refer to
.)
10. High and low reverse clutch (ATF condition “NG” only. Refer to
.)
Symptom
Condition
Diagnostic Item
Reference page
AT-70
TROUBLE DIAGNOSIS
Does not change
M2
→
M1.
ON vehicle
1. PNP switch
2. Fluid level and state
3. Control linkage adjustment
4. Manual mode switch
5. ATF pressure switch 5
6. CAN communication line
7. Control valve assembly
OFF vehicle
8. Input clutch (ATF condition “NG” only. Refer to
9. High and low reverse clutch (ATF condition “NG” only. Refer to
10. Direct clutch (ATF condition “NG” only. Refer to
No shock at all or
the clutch slips
when vehicle
changes speed D
1
→
D
2
or M
1
→
M
2
.
ON vehicle
1. 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 assembly
OFF vehicle
7. Torque converter (ATF condition “NG” only. Refer to
.)
8. Oil pump assembly (ATF condition “NG” only. Refer to
.)
9. 3rd one-way clutch (ATF condition “NG” only. Refer to
.)
10. Gear system (ATF condition “NG” only. Refer to
11. Direct clutch (ATF condition “NG” only. Refer to
12. Forward brake* (ATF condition “NG” only. Refer to
.)
Symptom
Condition
Diagnostic Item
Reference page
TROUBLE DIAGNOSIS
AT-71
D
E
F
G
H
I
J
K
L
M
A
B
AT
No shock at all or
the clutch slips
when vehicle
changes speed D
2
→
D
3
or M
2
→
M
3
.
ON vehicle
1. Fluid level and state
2. Vehicle speed sensor A/T and vehicle speed sensor MTR
,
3. ATF pressure switch 6 and high and low reverse clutch solenoid valve
4. CAN communication line
5. Line pressure test
6. Control valve assembly
OFF vehicle
7. Torque converter (ATF condition “NG” only. Refer to
8. Oil pump assembly (ATF condition “NG” only. Refer to
.)
9. 3rd one-way clutch (ATF condition “NG” only. Refer to
.)
10. Gear system (ATF condition “NG” only. Refer to
.)
11. High and low reverse clutch (ATF condition “NG” only. Refer to
.)
12. Forward one-way clutch* (ATF condition “NG” only. Refer to
.)
13. Forward brake* (ATF condition “NG” only. Refer to
No shock at all or
the clutch slips
when vehicle
changes speed D
3
→
D
4
or M
3
→
M
4
.
ON vehicle
1. Fluid level and state
2. Vehicle speed sensor A/T and vehicle speed sensor MTR
,
3. ATF pressure switch 3 and input clutch solenoid valve
4. ATF pressure switch 1 and front brake solenoid valve
5. CAN communication line
6. Line pressure test
7. Control valve assembly
OFF vehicle
8. Torque converter (ATF condition “NG” only. Refer to
9. Oil pump assembly (ATF condition “NG” only. Refer to
.)
10. Input clutch (ATF condition “NG” only. Refer to
.)
11. Gear system (ATF condition “NG” only. Refer to
.)
12. High and low reverse clutch (ATF condition “NG” only. Refer to
.)
13. Direct clutch (ATF condition “NG” only. Refer to
.)
Symptom
Condition
Diagnostic Item
Reference page
AT-72
TROUBLE DIAGNOSIS
No shock at all or
the clutch slips
when vehicle
changes speed D
4
→
D
5
or M
4
→
M
5
.
ON vehicle
1. Fluid level and state
2. Vehicle speed sensor A/T and vehicle speed sensor MTR
,
3. ATF pressure switch 1 and front brake solenoid valve
,
4. ATF pressure switch 5 and direct clutch solenoid valve
,
5. CAN communication line
6. Line pressure test
7. Control valve assembly
OFF vehicle
8. Torque converter (ATF condition “NG” only. Refer to
.)
9. Oil pump assembly (ATF condition “NG” only. Refer to
.)
10. Front brake [brake band (ATF condition “NG” only. Refer to
.)]
11. Input clutch (ATF condition “NG” only. Refer to
12. Gear system (ATF condition “NG” only. Refer to
13. High and low reverse clutch (ATF condition “NG” only. Refer to
When you press
the accelerator
pedal and shift
speed D
5
→
D
4
or
M
5
→
M
4
the
engine idles or the
transmission slips.
ON vehicle
1. Fluid level and state
2. Vehicle speed sensor A/T and vehicle speed sensor MTR
,
3. ATF pressure switch 1 and front brake solenoid valve
,
4. ATF pressure switch 5 and direct clutch solenoid valve
,
5. CAN communication line
6. Line pressure test
7. Control valve assembly
OFF vehicle
8. Torque converter (ATF condition “NG” only. Refer to
.)
9. Oil pump assembly (ATF condition “NG” only. Refer to
.)
10. Input clutch (ATF condition “NG” only. Refer to
11. Gear system (ATF condition “NG” only. Refer to
12. High and low reverse clutch (ATF condition “NG” only. Refer to
13. Direct clutch (ATF condition “NG” only. Refer to
Symptom
Condition
Diagnostic Item
Reference page
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