2001 INFINITI QX4 02 sensor

8. Vehicle Cannot Be Started From D1=NBAT0080SYMPTOM:
Vehicle cannot be started from D
1on Cruise test Ð Part 1.
1 CHECK SYMPTOM
Is ª6. Vehicle Does Not Creep Backward In ªRº Positionº OK?
YesorNo
Ye s©GO TO 2.
No©Go to ª6. Vehicle Does Not Creep Backward In ªRº Positionº, AT-227.
2 CHECK SELF-DIAGNOSTIC RESULTS
Does self-diagnosis show damage to vehicle speed sensor´A/T (revolution sensor), shift solenoid valve A, B or vehicle
speed sensor´MTR after cruise test?
SAT686I
YesorNo
Ye s©Check damaged circuit. Refer to ªDTC P0720, DTC P0750, DTC P0755 or VEHICLE
SPEED SENSOR. MTRº, AT-111, 168, 172 or 197.
No©GO TO 3.
3 CHECK THROTTLE POSITION SENSOR
Check throttle position sensor. Refer to EC-174, ªDescriptionº.
SAT142K
OK or NG
OK©GO TO 4.
NG©Repair or replace throttle position sensor.
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
AT-233

9. A/T Does Not Shift: D1®D2Or Does Not
Kickdown: D
4®D2=NBAT0081SYMPTOM:
A/T does not shift from D
1to D2at the specified speed.
A/T does not shift from D
4to D2when depressing accelerator
pedal fully at the specified speed.
1 CHECK SYMPTOM
Are ª7. Vehicle Does Not Creep Forward In ªDº, ª2º Or ª1º Positionº and ª8. Vehicle Cannot Be Started From D1º OK?
YesorNo
Ye s©GO TO 2.
No©Go to ª7. Vehicle Does Not Creep Forward In ªDº, ª2º Or ª1º Positionº and ª8. Vehicle
Cannot Be Started From D
1º, AT-230, 233.
2 CHECK PNP SWITCH CIRCUIT
With CONSULT-II
Does ªTCM INPUT SIGNALSº in Data Monitor show damage to PNP switch circuit?
Without CONSULT-II
Does self-diagnosis show damage to PNP switch circuit?
SAT367J
YesorNo
Ye s©Check PNP switch circuit. Refer to ªDTC P0705º, AT-99.
No©GO TO 3.
3 CHECK VEHICLE SPEED SENSOR´A/T AND VEHICLE SPEED SENSOR´MTR CIRCUIT
Check vehicle speed sensor´A/T (revolution sensor) and vehicle speed sensor´MTR circuit. Refer to ªDTC P0720 and
VEHICLE SPEED SENSOR´MTRº, AT-111, 197.
OK or NG
OK©GO TO 4.
NG©Repair or replace vehicle speed sensor´A/T (revolution sensor) and vehicle speed
sensor´MTR circuits.
TROUBLE DIAGNOSES FOR SYMPTOMS
9. A/T Does Not Shift: D1®D2Or Does Not Kickdown: D4®D2
AT-236

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

10. A/T Does Not Shift: D2®D3=NBAT0082SYMPTOM:
A/T does not shift from D
2to D3at the specified speed.
1 CHECK SYMPTOM
Are ª7. Vehicle Does Not Creep Forward In ªDº, ª2º Or ª1º Positionº and ª8. Vehicle Cannot Be Started From D1º OK?
YesorNo
Ye s©GO TO 2.
No©Go to ª7. Vehicle Does Not Creep Forward In ªDº, ª2º Or ª1º Positionº and ª8. Vehicle
Cannot Be Started From D
1º, AT-230, 233.
2 CHECK PNP SWITCH CIRCUIT
With CONSULT-II
Does ªTCM INPUT SIGNALSº in Data Monitor show damage to PNP switch circuit?
Without CONSULT-II
Does self-diagnosis show damage to PNP switch circuit?
SAT367J
YesorNo
Ye s©Check PNP switch circuit. Refer to ªDTC P0705º, AT-99.
No©GO TO 3.
3 CHECK THROTTLE POSITION SENSOR
Check throttle position sensor. Refer to EC-174, ªDescriptionº.
SAT142K
OK or NG
OK©GO TO 4.
NG©Repair or replace throttle position sensor.
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: D2®D3
AT-239

11. A/T Does Not Shift: D3®D4=NBAT0083SYMPTOM:
IA/T does not shift from D
3to D4at the specified speed.
IA/T must be warm before D
3to D4shift will occur.
1 CHECK SYMPTOM
Are ª7. Vehicle Does Not Creep Forward In ªDº, ª2º Or ª1º Positionº and ª8. Vehicle Cannot Be Started From D1º OK?
YesorNo
Ye s©GO TO 2.
No©Go to ª7. Vehicle Does Not Creep Forward In ªDº, ª2º Or ª1º Positionº and ª8. Vehicle
Cannot Be Started From D
1º, AT-230, 233.
2 CHECK SELF-DIAGNOSTIC RESULTS
With CONSULT-II
Does self-diagnosis, after cruise test, show damage to any of the following circuits?
IInhibitor switch
IOverdrive control switch
IA/T fluid temperature sensor
IRevolution sensor
IShift solenoid valve A or B
IVehicle speed sensor
SAT580I
YesorNo
Ye s©Check damaged circuit. Refer to ªDTC P0705, P0710, P0720, P0750, P0755 or VHCL
SPEED SEN´MTRº, AT-99, 105, 111, 168, 172 or 197.
No©GO TO 3.
TROUBLE DIAGNOSES FOR SYMPTOMS
11. A/T Does Not Shift: D3®D4
AT-242

3 CHECK THROTTLE POSITION SENSOR
Check throttle position sensor. Refer to EC-174, ªDescriptionº.
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:
IShift valve B
IOverrun clutch control valve
IShift solenoid valve B
IPilot valve
IPilot 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: D3®D4(Cont'd)
AT-243

12. A/T Does Not Perform Lock-up=NBAT0084SYMPTOM:
A/T does not perform lock-up at the specified speed.
1 CHECK SELF-DIAGNOSTIC RESULTS
Does self-diagnosis show damage to torque converter clutch solenoid valve circuit after cruise test?
SAT581I
YesorNo
Ye s©Check torque converter clutch solenoid valve circuit. Refer to ªDTC P0740º, AT-148.
No©GO TO 2.
2 CHECK THROTTLE POSITION SENSOR
Check throttle position sensor. Refer to EC-174, ªDescriptionº.
SAT142K
OK or NG
OK©GO TO 3.
NG©Repair or replace throttle position sensor.
3 DETECT MALFUNCTIONING ITEM
1. Remove control valve. Refer to AT-273.
2. Check following items:
ITorque converter clutch control valve
ITorque converter relief valve
ITorque converter clutch solenoid valve
IPilot valve
IPilot filter
OK or NG
OK©GO TO 4.
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
12. A/T Does Not Perform Lock-up
AT-245

15. Engine Speed Does Not Return To Idle
(Light Braking D
4®D3)=NBAT0087SYMPTOM:
IEngine speed does not smoothly return to idle when A/T
shifts from D
4to D3.
IVehicle does not decelerate by engine brake when turning
overdrive control switch OFF.
IVehicle does not decelerate by engine brake when shifting
A/T from ªDº to ª2º position.
1 CHECK SELF-DIAGNOSTIC RESULTS
Does self-diagnosis show damage to overrun clutch solenoid valve circuit after cruise test?
SAT583I
YesorNo
Ye s©Check overrun clutch solenoid valve circuit. Refer to ªDTC P1760º, AT-185.
No©GO TO 2.
2 CHECK THROTTLE POSITION SENSOR
Check throttle position sensor. Refer to EC-174, ªDescriptionº.
SAT142K
OK or NG
OK©GO TO 3.
NG©Repair or replace throttle position sensor.
TROUBLE DIAGNOSES FOR SYMPTOMS
15. Engine Speed Does Not Return To Idle (Light Braking D4®D3)
AT-250