Infiniti G20 (P11). Manual — part 60
7. Vehicle Does Not Creep Forward In “D”, “2”
Or “1” Position
=NCAT0087
SYMPTOM:
Vehicle does not creep forward when selecting “D”, “2” or “1”
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 “D” position. Refer to “Stall Test”, AT-62.
SAT493G
OK or NG
OK
©
GO TO 3.
NG
©
GO TO 6.
GI
MA
EM
LC
EC
FE
CL
MT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
TROUBLE DIAGNOSES FOR SYMPTOMS
7. Vehicle Does Not Creep Forward In “D”, “2” Or “1” Position
AT-237
3
CHECK LINE PRESSURE
Check line pressure at idle with selector lever in “D” position. Refer to “Line Pressure Test ”, AT-66.
SAT494G
OK or NG
OK
©
GO TO 4.
NG
©
1. Remove control valve assembly. Refer to AT-280.
2. Check the following items:
I
Valves to control line pressure (Pressure regulator valve, pressure modifier valve, pilot
valve and pilot filter)
I
Line pressure solenoid valve
3. Disassemble A/T.
4. Check the following item:
I
Oil 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.
TROUBLE DIAGNOSES FOR SYMPTOMS
7. Vehicle Does Not Creep Forward In “D”, “2” Or “1” Position (Cont’d)
AT-238
6
DETECT MALFUNCTIONING ITEM
1. Remove control valve assembly. Refer to AT-280.
2. Check the following items:
I
Valves to control line pressure (Pressure regulator valve, pressure modifier valve, pilot valve and pilot filter)
I
Line pressure solenoid valve
3. Disassemble A/T.
4. Check the following items:
I
Oil pump assembly
I
Forward clutch assembly
I
Forward one-way clutch
I
Low one-way clutch
I
Low & reverse brake assembly
I
Torque converter
OK or NG
OK
©
GO TO 5.
NG
©
Repair or replace damaged parts.
GI
MA
EM
LC
EC
FE
CL
MT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
TROUBLE DIAGNOSES FOR SYMPTOMS
7. Vehicle Does Not Creep Forward In “D”, “2” Or “1” Position (Cont’d)
AT-239
8. Vehicle Cannot Be Started From D
1
=NCAT0088
SYMPTOM:
Vehicle cannot be started from D
1
on Cruise test — Part 1.
1
CHECK SYMPTOM
Is 6. Vehicle Does Not Creep Backward In “R” Position OK?
Yes or No
Yes
©
GO TO 2.
No
©
Go to 6. Vehicle Does Not Creep Backward In “R” Position, AT-234.
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?
SAT934FB
Yes or No
Yes
©
Check damaged circuit. Refer to “DTC P0720, P0750, P0755 or VHCL SPEED
SEN·MTR”, AT-119, 181, or 215.
No
©
GO TO 3.
3
CHECK THROTTLE POSITION SENSOR
Check throttle position sensor. Refer to EC-177, “DTC P0120 THROTTLE POSITION SENSOR”.
SAT413J
OK or NG
OK
©
GO TO 4.
NG
©
Repair or replace throttle position sensor.
TROUBLE DIAGNOSES FOR SYMPTOMS
8. Vehicle Cannot Be Started From D
1
AT-240
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