Infiniti QX4 (R50). Manual — part 61
7
DETECT MALFUNCTIONING ITEM
1. Remove control valve Assembly. Refer to AT-273.
2. Check the following items:
I
Shift valve B
I
Shift solenoid valve B
I
Pilot valve
I
Pilot filter
3. Disassemble A/T.
4. Check the following items:
I
Servo piston assembly
I
High clutch assembly
I
Oil pump assembly
OK or NG
OK
©
GO TO 6.
NG
©
Repair or replace damaged parts.
GI
MA
EM
LC
EC
FE
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
TROUBLE DIAGNOSES FOR SYMPTOMS
10. A/T Does Not Shift: D
2
→
D
3
(Cont’d)
AT-241
11. A/T Does Not Shift: D
3
→
D
4
=NBAT0083
SYMPTOM:
I
A/T does not shift from D
3
to D
4
at the specified speed.
I
A/T must be warm before D
3
to D
4
shift will occur.
1
CHECK SYMPTOM
Are “7. Vehicle Does Not Creep Forward In “D”, “2” Or “1” Position” and “8. Vehicle Cannot Be Started From D
1
” OK?
Yes or No
Yes
©
GO TO 2.
No
©
Go to “7. Vehicle Does Not Creep Forward In “D”, “2” Or “1” Position” and “8. Vehicle
Cannot Be Started From D
1
2
CHECK SELF-DIAGNOSTIC RESULTS
With CONSULT-II
Does self-diagnosis, after cruise test, show damage to any of the following circuits?
I
Inhibitor switch
I
Overdrive control switch
I
A/T fluid temperature sensor
I
Revolution sensor
I
Shift solenoid valve A or B
I
Vehicle speed sensor
SAT580I
Yes or No
Yes
©
Check damaged circuit. Refer to “DTC P0705, P0710, P0720, P0750, P0755 or VHCL
SPEED SEN·MTR”, AT-99, 105, 111, 168, or 197.
No
©
GO TO 3.
TROUBLE DIAGNOSES FOR SYMPTOMS
11. A/T Does Not Shift: D
3
→
D
4
AT-242
3
CHECK THROTTLE POSITION SENSOR
Check throttle position sensor. Refer to EC-174, “Description”.
SAT142K
OK or NG
OK
©
GO TO 4.
NG
©
Repair or replace throttle position sensor.
4
CHECK A/T FLUID CONDITION
1. Remove oil pan.
2. Check A/T fluid condition.
SAT171B
OK or NG
OK
©
GO TO 5.
NG
©
GO TO 7.
5
DETECT MALFUNCTIONING ITEM
1. Remove control valve Assembly. Refer to AT-273.
2. Check the following items:
I
Shift valve B
I
Overrun clutch control valve
I
Shift solenoid valve B
I
Pilot valve
I
Pilot filter
OK or NG
OK
©
GO TO 6.
NG
©
Repair or replace damaged parts.
GI
MA
EM
LC
EC
FE
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
TROUBLE DIAGNOSES FOR SYMPTOMS
11. A/T Does Not Shift: D
3
→
D
4
(Cont’d)
AT-243
6
CHECK SYMPTOM
Check again.
OK or NG
OK
©
INSPECTION END
NG
©
1. Perform TCM input/output signal inspection.
2. If NG, recheck TCM pin terminals for damage or loose connection with harness con-
nector.
7
DETECT MALFUNCTIONING ITEM
1. Remove control valve Assembly. Refer to AT-273.
2. Check the following items:
I
Shift valve B
I
Overrun clutch control valve
I
Shift solenoid valve B
I
Pilot valve
I
Pilot filter
3. Disassemble A/T.
4. Check the following items:
I
Servo piston assembly
I
Brake band
I
Torque converter
I
Oil pump assembly
OK or NG
OK
©
GO TO 6.
NG
©
Repair or replace damaged parts.
TROUBLE DIAGNOSES FOR SYMPTOMS
11. A/T Does Not Shift: D
3
→
D
4
(Cont’d)
AT-244
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