Infiniti M45 (Y34). Manual — part 95
TROUBLE DIAGNOSIS FOR SYMPTOMS
AT-265
D
E
F
G
H
I
J
K
L
M
A
B
AT
Vehicle Does Not Creep Backward in “R” Position
ACS001FV
SYMPTOM:
The vehicle does not creep in “R” position, or an extreme lack of acceleration is observed.
DIAGNOSTIC PROCEDURE
1.
CHECK SELF-DIAGNOSTIC RESULTS
Execute self-diagnosis.
Do the self-diagnostic results indicate accelerator pedal position sensor, ATF pressure switch 6, high and low
reverse clutch solenoid valve, CAN communication line, PNP switch?
YES
>> Check the malfunctioning system. Refer to
AT-152, "DTC P1705 THROTTLE POSITION SEN-
AT-246, "DTC P1846 ATF PRESSURE SWITCH 6"
,
LOW REVERSE CLUTCH SOLENOID VALVE"
AT-103, "DTC U1000 CAN COMMUNICATION
AT-110, "DTC P0705 PARK/NEUTRAL POSITION SWITCH"
NO
>> GO TO 2.
2.
CHECK CONTROL LINKAGE
Check the control linkage.
●
Refer to
AT-305, "Checking of A/T Position"
OK or NG
OK
>> GO TO 3.
NG
>> Adjust control linkage. Refer to
3.
CHECK A/T FLUID LEVEL
Check A/T fluid level. Refer to
OK or NG
OK
>> GO TO 4.
NG
>> Refill ATF.
4.
CHECK STALL TEST
Check stall revolution with selector lever in “M” and “R” positions.
Refer to
.
OK or NG
OK
>> GO TO 5.
OK in “M” position, NG in “R” position>>1.Disassemble A/T. Refer
to
2. Check the following items. If any items are damaged,
repair or replace damaged parts.
–
Reverse brake
NG in both “M” and “R” positions>>GO TO 7.
SCIA1612E
SAT638A
SAT493G
AT-266
TROUBLE DIAGNOSIS FOR SYMPTOMS
5.
CHECK LINE PRESSURE
Check the line pressure with the engine idling. Refer to
OK or NG
OK
>> GO TO 8.
NG - 1 >> Line pressure high. GO TO 6.
NG - 2 >> Line pressure low. GO TO 7.
6.
DETECT MALFUNCTIONING ITEM
1.
Check control valve assembly. Refer to
AT-312, "Control Valve Assembly"
2.
Disassemble A/T. Refer to
3.
Check the following items:
–
Oil pump assembly. Refer to
OK or NG
OK
>> GO TO 8.
NG
>> Repair or replace damaged parts.
7.
DETECT MALFUNCTIONING ITEM
1.
Check control valve assembly. Refer to
AT-312, "Control Valve Assembly"
2.
Disassemble A/T. Refer to
3.
Check the following items:
–
Oil pump assembly. Refer to
–
–
Transmission case. Refer to
OK or NG
OK
>> GO TO 8.
NG
>> Repair or replace damaged parts.
8.
CHECK A/T FLUID CONDITION
1.
Remove oil pan. Refer to
AT-312, "Control Valve Assembly"
2.
Check A/T fluid condition. Refer to
OK or NG
OK
>> GO TO 9.
NG
>> GO TO 12.
SAT494G
SCIA5199E
TROUBLE DIAGNOSIS FOR SYMPTOMS
AT-267
D
E
F
G
H
I
J
K
L
M
A
B
AT
9.
DETECT MALFUNCTIONING ITEM
●
Check the malfunction items. If any items are damaged, repair or replace damaged parts. Refer to
OK or NG
OK
>> GO TO 10.
NG
>> Repair or replace damaged parts.
10.
CHECK SYMPTOM
Check again. Refer to
OK or NG
OK
>> INSPECTION END
NG
>> GO TO 11.
11.
CHECK TCM
1.
Check TCM input/output signal. Refer to
AT-86, "TCM Input/Output Signal Reference Values"
2.
If NG, recheck TCM pin terminals for damage or loose connection with harness connector.
OK or NG
OK
>> INSPECTION END
NG
>> Repair or replace damaged parts.
12.
DETECT MALFUNCTIONING ITEM
●
Check the malfunction items. If any items are damaged, repair or replace damaged parts. Refer to
OK or NG
OK
>> GO TO 10.
NG
>> Repair or replace damaged parts.
AT-268
TROUBLE DIAGNOSIS FOR SYMPTOMS
Vehicle Does Not Creep Forward in “D” Position
ACS001FW
SYMPTOM:
Vehicle does not creep forward when selecting “D” position.
DIAGNOSTIC PROCEDURE
1.
CHECK SELF-DIAGNOSTIC RESULTS
Execute self-diagnosis.
Do the self-diagnostic results indicate accelerator pedal position sensor, CAN communication line, PNP
switch?
YES
>> Check the malfunctioning system. Refer to
AT-152, "DTC P1705 THROTTLE POSITION SEN-
AT-103, "DTC U1000 CAN COMMUNICATION LINE"
NO
>> GO TO 2.
2.
CHECK CONTROL LINKAGE
Check the control linkage.
●
Refer to
AT-305, "Checking of A/T Position"
.
OK or NG
OK
>> GO TO 3.
NG
>> Adjust control linkage. Refer to
.
3.
CHECK A/T FLUID LEVEL
Check A/T fluid level. Refer to
OK or NG
OK
>> GO TO 4.
NG
>> Refill ATF.
4.
CHECK STALL TEST
Check stall revolution with selector lever in “D” position. Refer to
.
OK or NG
OK
>> GO TO 5.
NG
>> GO TO 7.
SCIA1612E
SAT638A
SAT493G
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