Infiniti G20 (P11). Manual — part 59
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
4
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
CL
MT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
TROUBLE DIAGNOSES FOR SYMPTOMS
5. Large Shock. “N”
→
“R” Position (Cont’d)
AT-233
6. Vehicle Does Not Creep Backward In “R”
Position
=NCAT0086
SYMPTOM:
Vehicle does not creep backward when selecting “R” 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 “1” and “R” positions.
SAT493G
OK or NG
OK
©
GO TO 3.
OK in “1” position, NG in
“R” position
©
1. Remove control valve assembly. Refer to “ON-VEHICLE SERVICE”, 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
Torque converter
I
Reverse clutch assembly
I
High clutch assembly
NG in both “1” and “R”
positions
©
GO TO 6.
TROUBLE DIAGNOSES FOR SYMPTOMS
6. Vehicle Does Not Creep Backward In “R” Position
AT-234
3
CHECK LINE PRESSURE
Check line pressure at idle with selector lever in “R” position. Refer to “Line Pressure Test”, AT-66.
SAT494G
OK or NG
OK
©
GO TO 4.
NG
©
1. Remove control valve assembly. Refer to “ON-VEHICLE SERVICE”, 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.
GI
MA
EM
LC
EC
FE
CL
MT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
TROUBLE DIAGNOSES FOR SYMPTOMS
6. Vehicle Does Not Creep Backward In “R” Position (Cont’d)
AT-235
6
DETECT MALFUNCTIONING ITEM
1. Remove control valve assembly. Refer to “ON-VEHICLE SERVICE”, 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
Torque converter
I
Reverse clutch assembly
I
High clutch assembly
I
Low & reverse brake assembly
I
Low one-way clutch
OK or NG
OK
©
GO TO 5.
NG
©
Repair or replace damaged parts.
TROUBLE DIAGNOSES FOR SYMPTOMS
6. Vehicle Does Not Creep Backward In “R” Position (Cont’d)
AT-236
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