Infiniti M35/M45 Y50. Manual — part 73
TROUBLE DIAGNOSIS FOR SYMPTOMS
AT-215
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6.
DETECT MALFUNCTIONING ITEM
Check malfunction items. If any items are damaged, repair or replace damaged parts. Refer to
OK or NG
OK
>> GO TO 7.
NG
>> Repair or replace damaged parts.
7.
CHECK SYMPTOM
Check again. Refer to
OK or NG
OK
>> INSPECTION END
NG
>> GO TO 8.
8.
CHECK TCM
1.
Check TCM input/output signals. Refer to
AT-89, "TCM Input/Output Signal Reference Values"
.
2.
If NG, recheck A/T assembly harness connector terminals for damage or loose connection with harness
connector.
OK or NG
OK
>> INSPECTION END
NG
>> Repair or replace damaged parts.
9.
DETECT MALFUNCTIONING ITEM
Check malfunction items. If any items are damaged, repair or replace damaged parts. Refer to
OK or NG
OK
>> GO TO 7.
NG
>> Repair or replace damaged parts.
A/T Does Not Shift: 4th Gear
→
3rd Gear
NCS001QH
SYMPTOM:
When shifted from M4 to M3 position in manual mode, does not downshift from 4th to 3rd gear.
DIAGNOSTIC PROCEDURE
1.
CHECK SELF-DIAGNOSTIC RESULTS
Perform self-diagnosis. Refer to
AT-92, "SELF-DIAGNOSTIC RESULT MODE"
Is any malfunction detected by self-diagnostic results?
YES
>> Check malfunctioning system. Refer to
AT-92, "SELF-DIAGNOSTIC RESULT MODE"
"Judgement Self-diagnosis Code"
.
NO
>> GO TO 2.
2.
CHECK A/T FLUID LEVEL
Check A/T fluid level. Refer to
OK or NG
OK
>> GO TO 3.
NG
>> Refill ATF.
AT-216
TROUBLE DIAGNOSIS FOR SYMPTOMS
3.
CHECK A/T POSITION
AT-228, "Checking of A/T Position"
.
OK or NG
OK
>> GO TO 4.
NG
>> Adjust A/T position. Refer to
AT-227, "Adjustment of A/T Position"
4.
CHECK MANUAL MODE SWITCH
Check manual mode switch. Refer to
AT-167, "DTC P1815 MANUAL MODE SWITCH"
OK or NG
OK
>> GO TO 5.
NG
>> Repair or replace damaged parts.
5.
CHECK A/T FLUID CONDITION
1.
Remove oil pan. Refer to
AT-236, "Control Valve With TCM and A/T Fluid Temperature Sensor 2"
2.
Check A/T fluid condition. Refer to
AT-53, "A/T Fluid Condition Check"
OK or NG
OK
>> GO TO 6.
NG
>> GO TO 9.
6.
DETECT MALFUNCTIONING ITEM
Check malfunction items. If any items are damaged, repair or replace damaged parts. Refer to
OK or NG
OK
>> GO TO 7.
NG
>> Repair or replace damaged parts.
7.
CHECK SYMPTOM
Check again. Refer to
OK or NG
OK
>> INSPECTION END
NG
>> GO TO 8.
8.
CHECK TCM
1.
Check TCM input/output signals. Refer to
AT-89, "TCM Input/Output Signal Reference Values"
2.
If NG, recheck A/T assembly harness connector terminals for damage or loose connection with harness
connector.
OK or NG
OK
>> INSPECTION END
NG
>> Repair or replace damaged parts.
9.
DETECT MALFUNCTIONING ITEM
Check malfunction items. If any items are damaged, repair or replace damaged parts. Refer to
OK or NG
OK
>> GO TO 7.
NG
>> Repair or replace damaged parts.
TROUBLE DIAGNOSIS FOR SYMPTOMS
AT-217
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AT
A/T Does Not Shift: 3rd Gear
→
2nd Gear
NCS001QI
SYMPTOM:
When shifted from M3 to M2 position in manual mode, does not downshift from 3rd to 2nd gear.
DIAGNOSTIC PROCEDURE
1.
CHECK SELF-DIAGNOSTIC RESULTS
Perform self-diagnosis. Refer to
AT-92, "SELF-DIAGNOSTIC RESULT MODE"
Is any malfunction detected by self-diagnostic results?
YES
>> Check malfunctioning system. Refer to
AT-92, "SELF-DIAGNOSTIC RESULT MODE"
"Judgement Self-diagnosis Code"
.
NO
>> GO TO 2.
2.
CHECK A/T FLUID LEVEL
Check A/T fluid level. Refer to
OK or NG
OK
>> GO TO 3.
NG
>> Refill ATF.
3.
CHECK A/T POSITION
Check A/T position. Refer to
AT-228, "Checking of A/T Position"
OK or NG
OK
>> GO TO 4.
NG
>> Adjust A/T position. Refer to
AT-227, "Adjustment of A/T Position"
.
4.
CHECK MANUAL MODE SWITCH
Check manual mode switch. Refer to
AT-167, "DTC P1815 MANUAL MODE SWITCH"
OK or NG
OK
>> GO TO 5.
NG
>> Repair or replace damaged parts.
5.
CHECK A/T FLUID CONDITION
1.
Remove oil pan. Refer to
AT-236, "Control Valve With TCM and A/T Fluid Temperature Sensor 2"
2.
Check A/T fluid condition. Refer to
AT-53, "A/T Fluid Condition Check"
.
OK or NG
OK
>> GO TO 6.
NG
>> GO TO 9.
6.
DETECT MALFUNCTIONING ITEM
Check malfunction items. If any items are damaged, repair or replace damaged parts. Refer to
OK or NG
OK
>> GO TO 7.
NG
>> Repair or replace damaged parts.
7.
CHECK SYMPTOM
Check again. Refer to
OK or NG
OK
>> INSPECTION END
NG
>> GO TO 8.
AT-218
TROUBLE DIAGNOSIS FOR SYMPTOMS
8.
CHECK TCM
1.
Check TCM input/output signals. Refer to
AT-89, "TCM Input/Output Signal Reference Values"
2.
If NG, recheck A/T assembly harness connector terminals for damage or loose connection with harness
connector.
OK or NG
OK
>> INSPECTION END
NG
>> Repair or replace damaged parts.
9.
DETECT MALFUNCTIONING ITEM
Check malfunction items. If any items are damaged, repair or replace damaged parts. Refer to
OK or NG
OK
>> GO TO 7.
NG
>> Repair or replace damaged parts.
A/T Does Not Shift: 2nd Gear
→
1st Gear
NCS001QJ
SYMPTOM:
When shifted from M2 to M1 position in manual mode, does not downshift from 2nd to 1st gear.
DIAGNOSTIC PROCEDURE
1.
CHECK SELF-DIAGNOSTIC RESULTS
Perform self-diagnosis. Refer to
AT-92, "SELF-DIAGNOSTIC RESULT MODE"
.
Is any malfunction detected by self-diagnostic results?
YES
>> Check malfunctioning system. Refer to
AT-92, "SELF-DIAGNOSTIC RESULT MODE"
"Judgement Self-diagnosis Code"
.
NO
>> GO TO 2.
2.
CHECK A/T FLUID LEVEL
Check A/T fluid level. Refer to
OK or NG
OK
>> GO TO 3.
NG
>> Refill ATF.
3.
CHECK A/T POSITION
AT-228, "Checking of A/T Position"
.
OK or NG
OK
>> GO TO 4.
NG
>> Adjust A/T position. Refer to
AT-227, "Adjustment of A/T Position"
4.
CHECK MANUAL MODE SWITCH
Check manual mode switch. Refer to
AT-167, "DTC P1815 MANUAL MODE SWITCH"
OK or NG
OK
>> GO TO 5.
NG
>> Repair or replace damaged parts.
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