2001 INFINITI QX4 check oil

6 DETECT MALFUNCTIONING ITEM
1. Remove control valve assembly. Refer to ªON-VEHICLE SERVICEº, AT-273.
2. Check the following items:
IValves to control line pressure (Pressure regulator valve, pressure modifier valve, pilot valve and pilot filter)
ILine pressure solenoid valve
3. Disassemble A/T.
4. Check the following items:
IOil pump assembly
ITorque converter
IReverse clutch assembly
IHigh clutch assembly
ILow & reverse brake assembly
ILow one-way clutch
©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
6. Vehicle Does Not Creep Backward In ªRº Position (Cont'd)
AT-229

3 CHECK LINE PRESSURE
Check line pressure at idle with selector lever in ªRº position.
Refer to ªLINE PRESSURE TESTº, AT-62.
SAT494G
OK or NG
OK©GO TO 4.
NG©1. Remove control valve assembly.
Refer to AT-273.
2. Check the following items:
IValves to control line pressure (Pressure regulator valve, pressure modifier valve, pilot
valve and pilot filter)
ILine pressure solenoid valve
3. Disassemble A/T.
4. Check the following items:
IOil pump assembly
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 6.
5 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.
GI
MA
EM
LC
EC
FE
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
TROUBLE DIAGNOSES FOR SYMPTOMS
7. Vehicle Does Not Creep Forward In ªDº, ª2º Or ª1º Position (Cont'd)
AT-231

6 DETECT MALFUNCTIONING ITEM
1. Remove control valve assembly. Refer to ªON-VEHICLE SERVICEº, AT-273.
2. Check the following items:
IValves to control line pressure (Pressure regulator valve, pressure modifier valve, pilot valve and pilot filter)
ILine pressure solenoid valve
3. Disassemble A/T.
4. Check the following items:
IOil pump assembly
IForward clutch assembly
IForward one-way clutch
ILow one-way clutch
ILow & reverse brake assembly
ITorque converter
©Repair or replace damaged parts.
TROUBLE DIAGNOSES FOR SYMPTOMS
7. Vehicle Does Not Creep Forward In ªDº, ª2º Or ª1º Position (Cont'd)
AT-232

4 CHECK LINE PRESSURE
Check line pressure at stall point with selector lever in ªDº position.
Refer to ªLINE PRESSURE TESTº, AT-62.
SAT494G
OK or NG
OK©GO TO 5.
NG©GO TO 8.
5 CHECK A/T FLUID CONDITION
1. Remove oil pan.
2. Check A/T fluid condition.
SAT171B
OK or NG
OK©GO TO 6.
NG©GO TO 8.
6 DETECT MALFUNCTIONING ITEM
1. Remove control valve assembly.
Refer to AT-273.
2. Check the following items:
IShift valve A
IShift valve B
IShift solenoid valve A
IShift solenoid valve B
IPilot valve
IPilot filter
OK or NG
OK©GO TO 7.
NG©Repair or replace damaged parts.
TROUBLE DIAGNOSES FOR SYMPTOMS
8. Vehicle Cannot Be Started From D1(Cont'd)
AT-234

7 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.
8 DETECT MALFUNCTIONING ITEM
1. Remove control valve assembly.
Refer to AT-273.
2. Check the following items:
IShift valve A
IShift valve B
IShift solenoid valve A
IShift solenoid valve B
IPilot valve
IPilot filter
3. Disassemble A/T.
4. Check the following items:
IForward clutch assembly
IForward one-way clutch
ILow one-way clutch
IHigh clutch assembly
ITorque converter
IOil pump assembly
OK or NG
OK©GO TO 7.
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
8. Vehicle Cannot Be Started From D1(Cont'd)
AT-235

4 CHECK THROTTLE POSITION SENSOR
Check throttle position sensor. Refer to EC-174, ªDescriptionº.
SAT142K
OK or NG
OK©GO TO 5.
NG©Repair or replace throttle position sensor.
5 CHECK A/T FLUID CONDITION
1. Remove oil pan.
2. Check A/T fluid condition.
SAT171B
OK or NG
OK©GO TO 6.
NG©GO TO 8.
6 DETECT MALFUNCTIONING ITEM
1. Remove control valve. Refer to AT-273.
2. Check the following items:
IShift valve A
IShift solenoid valve A
IPilot valve
IPilot filter
OK or NG
OK©GO TO 7.
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
9. A/T Does Not Shift: D1®D2Or Does Not Kickdown: D4®D2(Cont'd)
AT-237

7 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.
8 DETECT MALFUNCTIONING ITEM
1. Remove control valve. Refer to AT-273.
2. Check the following items:
IShift valve A
IShift solenoid valve A
IPilot valve
IPilot filter
3. Disassemble A/T.
4. Check the following items:
IServo piston assembly
IBrake band
IOil pump assembly
OK or NG
OK©GO TO 7.
NG©Repair or replace damaged parts.
TROUBLE DIAGNOSES FOR SYMPTOMS
9. A/T Does Not Shift: D1®D2Or Does Not Kickdown: D4®D2(Cont'd)
AT-238

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:
IShift valve B
IShift solenoid valve B
IPilot valve
IPilot filter
OK or NG
OK©GO TO 6.
NG©Repair or replace damaged parts.
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.
TROUBLE DIAGNOSES FOR SYMPTOMS
10. A/T Does Not Shift: D2®D3(Cont'd)
AT-240