Nissan Pathfinder (2005 year). Instruction — part 30
TROUBLE DIAGNOSIS FOR SYMPTOMS
AT-211
D
E
F
G
H
I
J
K
L
M
A
B
AT
2005 Pathfinder
A/T Does Not Shift: 5th gear
→
4th gear
UCS0037Y
SYMPTOM:
When shifted from D
5
to D
4
position, does not downshift from 5th to 4th gears.
DIAGNOSTIC PROCEDURE
1.
CHECK SELF-DIAGNOSIS RESULTS
Perform self-diagnosis. Refer to
AT-87, "SELF-DIAGNOSTIC RESULT MODE"
.
Is any malfunction detected by self-diagnostic results?
YES
>> Check the malfunctioning system. Refer to
AT-87, "SELF-DIAGNOSTIC RESULT MODE"
.
NO
>> GO TO 2.
2.
CHECK OVERDRIVE CONTROL SWITCH CIRCUIT
Check overdrive control switch. Refer to
AT-178, "OVERDRIVE CONTROL SWITCH"
.
OK or NG
OK
>> GO TO 3.
NG
>> Repair or replace damaged parts.
3.
CHECK A/T FLUID LEVEL
Check the A/T fluid level. Refer to
.
OK or NG
OK
>> GO TO 4.
NG
>> Refill ATF.
4.
CHECK CONTROL CABLE
Check the control cable.
●
Refer to
AT-222, "Checking of A/T Position"
.
OK or NG
OK
>> GO TO 5.
NG
>> Adjust control cable. Refer to
AT-222, "Adjustment of A/T Position"
.
5.
CHECK A/T FLUID CONDITION
1.
Remove oil pan. Refer to
AT-233, "Control Valve With TCM and A/T Fluid Temperature Sensor 2"
.
2.
Check A/T fluid condition. Refer to
AT-50, "Fluid Condition Check"
.
OK or NG
OK
>> GO TO 6.
NG
>> GO TO 9.
6.
DETECT MALFUNCTIONING ITEM
●
Check the malfunction items. If any items are damaged, repair or replace damaged parts. Refer to
(Symptom No.14).
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-212
TROUBLE DIAGNOSIS FOR SYMPTOMS
2005 Pathfinder
8.
PERFORM TCM INSPECTION
1.
Perform TCM input/output signals inspection. Refer to
AT-83, "TCM Input/Output Signal Reference Val-
.
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 the malfunction items. If any items are damaged, repair or replace damaged parts. Refer to
(Symptom No.14).
OK or NG
OK
>> GO TO 7.
NG
>> Repair or replace damaged parts.
TROUBLE DIAGNOSIS FOR SYMPTOMS
AT-213
D
E
F
G
H
I
J
K
L
M
A
B
AT
2005 Pathfinder
A/T Does Not Shift: 4th gear
→
3rd gear
UCS0037Z
SYMPTOM:
When shifted from D
4
to 3
3
position, does not downshift from 4th to 3rd gears.
DIAGNOSTIC PROCEDURE
1.
CHECK SELF-DIAGNOSIS RESULTS
Perform self-diagnosis. Refer to
AT-87, "SELF-DIAGNOSTIC RESULT MODE"
.
Is any malfunction detected by self-diagnostic results?
YES
>> Check the malfunctioning system. Refer to
AT-87, "SELF-DIAGNOSTIC RESULT MODE"
.
NO
>> GO TO 2.
2.
CHECK A/T FLUID LEVEL
Check the A/T fluid level. Refer to
.
OK or NG
OK
>> GO TO 3.
NG
>> Refill ATF.
3.
CHECK CONTROL CABLE
Check the control cable.
●
Refer to
AT-222, "Checking of A/T Position"
.
OK or NG
OK
>> GO TO 4.
NG
>> Adjust control cable. Refer to
AT-222, "Adjustment of A/T Position"
.
4.
CHECK A/T FLUID CONDITION
1.
Remove oil pan. Refer to
AT-233, "Control Valve With TCM and A/T Fluid Temperature Sensor 2"
.
2.
Check A/T fluid condition. Refer to
AT-50, "Fluid Condition Check"
.
OK or NG
OK
>> GO TO 5.
NG
>> GO TO 8.
5.
DETECT MALFUNCTIONING ITEM
●
Check the malfunction items. If any items are damaged, repair or replace damaged parts. Refer to
(Symptom No.15).
OK or NG
OK
>> GO TO 6.
NG
>> Repair or replace damaged parts.
6.
CHECK SYMPTOM
Check again. Refer to
.
OK or NG
OK
>> INSPECTION END
NG
>> GO TO 7.
AT-214
TROUBLE DIAGNOSIS FOR SYMPTOMS
2005 Pathfinder
7.
PERFORM TCM INSPECTION
1.
Perform TCM input/output signals inspection. Refer to
AT-83, "TCM Input/Output Signal Reference Val-
.
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.
8.
DETECT MALFUNCTIONING ITEM
●
Check the malfunction items. If any items are damaged, repair or replace damaged parts. Refer to
(Symptom No.15).
OK or NG
OK
>> GO TO 6.
NG
>> Repair or replace damaged parts.
TROUBLE DIAGNOSIS FOR SYMPTOMS
AT-215
D
E
F
G
H
I
J
K
L
M
A
B
AT
2005 Pathfinder
A/T Does Not Shift: 3rd gear
→
2nd gear
UCS00380
SYMPTOM:
When shifted from 3
3
to 2
2
position, does not downshift from 3rd to 2nd gears.
DIAGNOSTIC PROCEDURE
1.
CHECK SELF-DIAGNOSIS RESULTS
Perform self-diagnosis. Refer to
AT-87, "SELF-DIAGNOSTIC RESULT MODE"
.
Is any malfunction detected by self-diagnostic results?
YES
>> Check the malfunctioning system. Refer to
AT-87, "SELF-DIAGNOSTIC RESULT MODE"
.
NO
>> GO TO 2.
2.
CHECK A/T FLUID LEVEL
Check the A/T fluid level. Refer to
.
OK or NG
OK
>> GO TO 3.
NG
>> Refill ATF.
3.
CHECK CONTROL CABLE
Check the control cable.
●
Refer to
AT-222, "Checking of A/T Position"
.
OK or NG
OK
>> GO TO 4.
NG
>> Adjust control cable. Refer to
AT-222, "Adjustment of A/T Position"
.
4.
CHECK A/T FLUID CONDITION
1.
Remove oil pan. Refer to
AT-233, "Control Valve With TCM and A/T Fluid Temperature Sensor 2"
.
2.
Check A/T fluid condition. Refer to
AT-50, "Fluid Condition Check"
.
OK or NG
OK
>> GO TO 5.
NG
>> GO TO 8.
5.
DETECT MALFUNCTIONING ITEM
●
Check the malfunction items. If any items are damaged, repair or replace damaged parts. Refer to
(Symptom No.16).
OK or NG
OK
>> GO TO 6.
NG
>> Repair or replace damaged parts.
6.
CHECK SYMPTOM
Check again. Refer to
.
OK or NG
OK
>> INSPECTION END
NG
>> GO TO 7.
AT-216
TROUBLE DIAGNOSIS FOR SYMPTOMS
2005 Pathfinder
7.
PERFORM TCM INSPECTION
1.
Perform TCM input/output signals inspection. Refer to
AT-83, "TCM Input/Output Signal Reference Val-
.
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.
8.
DETECT MALFUNCTIONING ITEM
●
Check the malfunction items. If any items are damaged, repair or replace damaged parts. Refer to
(Symptom No.16).
OK or NG
OK
>> GO TO 6.
NG
>> Repair or replace damaged parts.
TROUBLE DIAGNOSIS FOR SYMPTOMS
AT-217
D
E
F
G
H
I
J
K
L
M
A
B
AT
2005 Pathfinder
A/T Does Not Shift: 2nd gear
→
1st gear
UCS00381
SYMPTOM:
When shifted from 2
2
to 1
1
position, does not downshift from 2nd to 1st gears.
DIAGNOSTIC PROCEDURE
1.
CHECK SELF-DIAGNOSIS RESULTS
Perform self-diagnosis. Refer to
AT-87, "SELF-DIAGNOSTIC RESULT MODE"
.
Is any malfunction detected by self-diagnostic results?
YES
>> Check the malfunctioning system. Refer to
AT-87, "SELF-DIAGNOSTIC RESULT MODE"
.
NO
>> GO TO 2.
2.
CHECK 1ST POSITION SWITCH CIRCUIT
With CONSULT-II
1.
Turn ignition switch “ON”.
2.
Select “ECU INPUT SIGNALS” in “DATA MONITOR” mode for
“A/T” with CONSULT-II.
3.
Read out “1 POSITION SW” switch moving selector lever to
each position.
Without CONSULT-II
1.
Turn ignition switch “ON”. (Do not start engine)
2.
Check voltage between A/T device harness connector terminal and ground.
OK or NG
OK
>> GO TO 3.
NG
>> Repair or replace damaged parts.
3.
CHECK A/T FLUID LEVEL
Check the A/T fluid level. Refer to
.
OK or NG
OK
>> GO TO 4.
NG
>> Refill ATF.
Monitor item
Condition
Display value
1 POSITION SW
When setting the selector
lever to “1” position.
ON
When setting selector
lever to other positions.
OFF
LCIA0339E
Item
Connector No.
Terminal No.
Condition
Data
(Approx.)
1st position
switch
M156
9 - Ground
When setting
the selector
lever to “1”
position.
0V
When setting
selector lever
to other posi-
tions.
Battery volt-
age
AT-218
TROUBLE DIAGNOSIS FOR SYMPTOMS
2005 Pathfinder
4.
CHECK CONTROL CABLE
Check the control cable.
●
Refer to
AT-222, "Checking of A/T Position"
.
OK or NG
OK
>> GO TO 5.
NG
>> Adjust control cable. Refer to
AT-222, "Adjustment of A/T Position"
.
5.
CHECK A/T FLUID CONDITION
1.
Remove oil pan. Refer to
AT-233, "Control Valve With TCM and A/T Fluid Temperature Sensor 2"
.
2.
Check A/T fluid condition. Refer to
AT-50, "Fluid Condition Check"
.
OK or NG
OK
>> GO TO 6.
NG
>> GO TO 9.
6.
DETECT MALFUNCTIONING ITEM
●
Check the malfunction items. If any items are damaged, repair or replace damaged parts. Refer to
(Symptom No.17).
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.
PERFORM TCM INSPECTION
1.
Perform TCM input/output signals inspection. Refer to
AT-83, "TCM Input/Output Signal Reference Val-
.
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 the malfunction items. If any items are damaged, repair or replace damaged parts. Refer to
(Symptom No.17).
OK or NG
OK
>> GO TO 7.
NG
>> Repair or replace damaged parts.
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