Nissan Silvia. Instruction — part 40
8. Large Shock. “N”
→
“R” Position
=NMAT0077
SYMPTOM:
There is large shock when changing from “N” to “R” position.
1
CHECK SELF-DIAGNOSTIC RESULTS
Does self-diagnosis show damage to A/T fluid temperature sensor, line pressure solenoid valve or throttle position sensor
circuit?
SAT831HA
Yes or No
Yes
©
Check damaged circuit. Refer to AT-98, AT-125 or AT-136.
No
©
GO TO 2.
2
CHECK THROTTLE POSITION SENSOR
Check throttle position sensor. Refer to EC-141, “Component Description”.
SAT414K
OK or NG
OK
©
GO TO 3.
NG
©
Repair or replace throttle position sensor.
GI
MA
EM
LC
EC
FE
CL
MT
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
TROUBLE DIAGNOSES FOR SYMPTOMS
8. Large Shock. “N”
→
“R” Position
AT-157
3
CHECK LINE PRESSURE
Check line pressure at idle with selector lever in “D” position. Refer to “LINE PRESSURE TEST”, AT-51.
SAT494G
OK or NG
OK
©
GO TO 4.
NG
©
1. Remove control valve assembly. Refer to AT-205.
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.
TROUBLE DIAGNOSES FOR SYMPTOMS
8. Large Shock. “N”
→
“R” Position (Cont’d)
AT-158
9. Vehicle Does Not Creep Backward In “R”
Position
=NMAT0078
SYMPTOM:
Vehicle does not creep backward when selecting “R” position.
1
CHECK A/T FLUID LEVEL
Check A/T fluid level again. Refer to AT-9.
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.
Refer to “STALL TEST”, AT-48.
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-205.
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.
GI
MA
EM
LC
EC
FE
CL
MT
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
TROUBLE DIAGNOSES FOR SYMPTOMS
9. Vehicle Does Not Creep Backward In “R” Position
AT-159
3
CHECK LINE PRESSURE
Check line pressure at idle with selector lever in “R” position. Refer to “LINE PRESSURE TEST”, AT-51.
SAT494G
OK or NG
OK
©
GO TO 4.
NG
©
1. Remove control valve assembly. Refer to “ON-VEHICLE SERVICE”, AT-205.
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
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
9. Vehicle Does Not Creep Backward In “R” Position (Cont’d)
AT-160
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