2001 INFINITI QX4 elec

7. Vehicle Does Not Creep Forward In ªDº, ª2º
Or ª1º Position
=NBAT0079SYMPTOM:
Vehicle does not creep forward when selecting ªDº, ª2º or ª1º
position.
1 CHECK A/T FLUID LEVEL
Check A/T fluid level again.
SAT638A
OK or NG
OK©GO TO 2.
NG©Refill ATF.
2 CHECK STALL TEST
Check stall revolution with selector lever in ªDº position.
Refer to ªSTALL TESTº, AT-59.
SAT493G
OK or NG
OK©GO TO 3.
NG©GO TO 6.
TROUBLE DIAGNOSES FOR SYMPTOMS
7. Vehicle Does Not Creep Forward In ªDº, ª2º Or ª1º Position
AT-230

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

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

18. A/T Does Not Shift: D3®22, When Selector
Lever ªDº®ª2º Position
=NBAT0090SYMPTOM:
A/T does not shift from D
3to 22when changing selector lever
from ªDº to ª2º position.
1 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 ª9. A/T Does Not Shift: D
1,D2Or Does Not Kickdown: D4,D2º, AT-236.
TROUBLE DIAGNOSES FOR SYMPTOMS
18. A/T Does Not Shift: D3®22, When Selector Lever ªDº®ª2º Position
AT-254

19. A/T Does Not Shift: 22®11, When Selector
Lever ª2º®ª1º Position
=NBAT0091SYMPTOM:
A/T does not shift from 2
2to 11when changing selector lever
from ª2º to ª1º position.
1 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 2.
2 CHECK SYMPTOM
Check again.
SAT778B
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
19. A/T Does Not Shift: 22®11, When Selector Lever ª2º®ª1º Position
AT-255

SAT136K
21. TCM Self-diagnosis Does Not Activate (PNP,
Overdrive Control and Throttle Position
Switches Circuit Checks)
NBAT0204
SAT143K
SAT142K
SYMPTOM:
O/D OFF indicator lamp does not come on in TCM self-diag-
nostic procedure even the lamp circuit is good.
DESCRIPTIONNBAT0204S01IPNP switch
The PNP switch assemble includes a transmission range
switch. The transmission range switch detects the selector
position and sends a signal to the TCM.
IOverdrive control switch
Detects the overdrive control switch position (ON or OFF) and
sends a signal to the TCM.
IThrottle position switch
Consists of a wide open throttle position switch and a closed
throttle position switch.
The wide open throttle position switch sends a signal to the
TCM when the throttle valve is open at least 1/2 of the full
throttle position. The closed throttle position switch sends a
signal to the TCM when the throttle valve is fully closed.
GI
MA
EM
LC
EC
FE
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
TROUBLE DIAGNOSES FOR SYMPTOMS
21. TCM Self-diagnosis Does Not Activate (PNP, Overdrive Control and Throttle Position Switches Circuit Checks)
AT-257

DIAGNOSTIC PROCEDURE=NBAT0204S03NOTE:
The diagnostic procedure includes inspections for the overdrive
control and throttle position switch circuits.
1 INSPECTION START
Do you have CONSULT-II?
YesorNo
Yes (With CONSULT-II)©GO TO 2.
No (Without CONSULT-
II)©GO TO 3.
2 CHECK PNP SWITCH CIRCUIT (With CONSULT-II)
With CONSULT-II
1. Turn ignition switch to ªONº position.
(Do not start engine.)
2. Select ªTCM INPUT SIGNALSº in ªDATA MONITORº mode for ªA/Tº with CONSULT-II.
3. Read out ªPº, ªRº, ªNº, ªDº, ª2º and ª1º position switches moving selector lever to each position. Check the signal of the
selector lever position is indicated properly.
SAT643J
OK or NG
OK©GO TO 5.
NG©GO TO 4.
TROUBLE DIAGNOSES FOR SYMPTOMS
21. TCM Self-diagnosis Does Not Activate (PNP, Overdrive Control and Throttle Position Switches Circuit Checks) (Cont'd)
AT-258

3 CHECK PNP SWITCH CIRCUIT (Without CONSULT-II)
Without CONSULT-II
1. Turn ignition switch to ªONº position.
(Do not start engine.)
2. Check voltage between TCM terminals 26, 27, 34, 35, 36 and ground while moving selector lever through each posi-
tion.
MTBL0205
SAT517J
Does battery voltage exist (B) or non-existent (0)?
Ye s©GO TO 5.
No©GO TO 4.
4 DETECT MALFUNCTIONING ITEM
Check the following items:
IPNP switch
Refer to ªComponent Inspectionº, AT-263.
IHarness for short or open between ignition switch and PNP switch (Main harness)
IHarness for short or open between PNP switch and TCM (Main harness)
OK or NG
OK©GO TO 5.
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
21. TCM Self-diagnosis Does Not Activate (PNP, Overdrive Control and Throttle Position Switches Circuit Checks) (Cont'd)
AT-259