Nissan Pathfinder (2012 year). Manual — part 572
TM-3
C
E
F
G
H
I
J
K
L
M
A
B
TM
N
O
P
DTC Confirmation Procedure . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . ...
P1752 INPUT CLUTCH SOLENOID . . . . ..
Description . . . . . . . . . . . . . . . ..
CONSULT Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . ...
On Board Diagnosis Logic . . . . . . . . . ..
Possible Cause . . . . . . . . . . . . . ...
DTC Confirmation Procedure . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . ...
P1757 FRONT BRAKE SOLENOID . . . . ...
Description . . . . . . . . . . . . . . . ..
CONSULT Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . ...
On Board Diagnosis Logic . . . . . . . . . ..
Possible Cause . . . . . . . . . . . . . ...
DTC Confirmation Procedure . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . ...
P1762 DIRECT CLUTCH SOLENOID . . . .
Description . . . . . . . . . . . . . . . ..
CONSULT Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . ...
On Board Diagnosis Logic . . . . . . . . . ..
Possible Cause . . . . . . . . . . . . . ...
DTC Confirmation Procedure . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . ...
P1767 HIGH AND LOW REVERSE CLUTCH
SOLENOID . . . . . . . . . . . . . . .
Description . . . . . . . . . . . . . . . ..
CONSULT Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . ...
On Board Diagnosis Logic . . . . . . . . . ..
Possible Cause . . . . . . . . . . . . . ...
DTC Confirmation Procedure . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . ...
P1772 LOW COAST BRAKE SOLENOID . . .
Description . . . . . . . . . . . . . . . ..
CONSULT Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . ...
On Board Diagnosis Logic . . . . . . . . . ..
Possible Cause . . . . . . . . . . . . . ...
DTC Confirmation Procedure . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . ...
P1774 LOW COAST BRAKE SOLENOID . . .
Description . . . . . . . . . . . . . . . ..
CONSULT Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . ...
On Board Diagnosis Logic . . . . . . . . . ..
Possible Cause . . . . . . . . . . . . . ...
DTC Confirmation Procedure . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . ...
P1815 M-MODE SWITCH . . . . . . . . ..
Description . . . . . . . . . . . . . . . ..
CONSULT Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . .
On Board Diagnosis Logic . . . . . . . . . ...
Possible Cause . . . . . . . . . . . . . .
DTC Confirmation Procedure . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . ...
Component Inspection . . . . . . . . . . ...
MAIN POWER SUPPLY AND GROUND CIR-
CUIT . . . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
CLOSED THROTTLE POSITION AND WIDE
OPEN THROTTLE POSITION CIRCUIT . . .
CONSULT Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . .
BRAKE SIGNAL CIRCUIT . . . . . . . ..
CONSULT Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . .
A/T SHIFT LOCK SYSTEM . . . . . . . .
Description . . . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
OVERDRIVE CONTROL SWITCH . . . . ..
CONSULT Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . .
1ST POSITION SWITCH . . . . . . . . .
CONSULT Reference Value in Data Monitor
Mode . . . . . . . . . . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . .
ECU DIAGNOSIS INFORMATION . . .
TCM . . . . . . . . . . . . . . . . .
Reference Value . . . . . . . . . . . . .
Fail-Safe . . . . . . . . . . . . . . . .
DTC Inspection Priority Chart . . . . . . . .
DTC No. Index . . . . . . . . . . . . . ...
WIRING DIAGRAM . . . . . . . . .
A/T CONTROL SYSTEM . . . . . . . .
Wiring Diagram . . . . . . . . . . . . . ..
A/T SHIFT LOCK SYSTEM . . . . . . . .
Wiring Diagram . . . . . . . . . . . . . ..
SYMPTOM DIAGNOSIS . . . . . . .
SYSTEM SYMPTOM . . . . . . . . . ...
Symptom Chart . . . . . . . . . . . . . ..
PRECAUTION . . . . . . . . . . .
PRECAUTIONS . . . . . . . . . . . ...
August 2012
2012 Pathfinder
TM-4
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect . . . . . . . . .
Precaution for Work . . . . . . . . . . . ...
Precaution for On Board Diagnosis (OBD) System
of A/T and Engine . . . . . . . . . . . . ..
Precaution . . . . . . . . . . . . . . . .
Service Notice or Precaution . . . . . . . . .
PREPARATION . . . . . . . . . . ..
PREPARATION . . . . . . . . . . . ...
Special Service Tool . . . . . . . . . . . ..
Commercial Service Tool . . . . . . . . . ..
PERIODIC MAINTENANCE . . . . . ...
A/T FLUID . . . . . . . . . . . . . .
Checking the A/T Fluid (ATF) . . . . . . . .
Changing the A/T Fluid (ATF) . . . . . . . .
A/T Fluid Cooler Cleaning . . . . . . . . . .
INSPECTIONS BEFORE TROUBLE DIAG-
NOSIS . . . . . . . . . . . . . . . ..
Fluid Condition Check . . . . . . . . . . ...
Stall Test . . . . . . . . . . . . . . . .
Line Pressure Test . . . . . . . . . . . .
ROAD TEST . . . . . . . . . . . . . .
Check Before Engine Is Started . . . . . . .
Check at Idle . . . . . . . . . . . . . . ..
Cruise Test - Part 1 . . . . . . . . . . . ...
Cruise Test - Part 2 . . . . . . . . . . . ...
Cruise Test - Part 3 . . . . . . . . . . . ...
REMOVAL AND INSTALLATION . . . ..
SHIFT CONTROL SYSTEM . . . . . . .
Exploded view . . . . . . . . . . . . . ...
Removal and Installation . . . . . . . . . ...
Inspection and Adjustment . . . . . . . . .
OIL PAN . . . . . . . . . . . . . . ...
Removal and Installation . . . . . . . . . ...
CONTROL VALVE WITH TCM . . . . . .
Removal and Installation . . . . . . . . . ...
REAR OIL SEAL . . . . . . . . . . . ..
Removal and Installation . . . . . . . . . ...
KEY INTERLOCK CABLE . . . . . . . ...
Component . . . . . . . . . . . . . . .
Removal and Installation . . . . . . . . . ...
AIR BREATHER HOSE . . . . . . . . ...
2WD . . . . . . . . . . . . . . . . . . ..
2WD : Removal and Installation . . . . . . .
4WD . . . . . . . . . . . . . . . . . . .
4WD : Removal and Installation . . . . . . .
A/T FLUID COOLER . . . . . . . . . .
Removal and Installation . . . . . . . . . ...
UNIT REMOVAL AND INSTALLATION ...
TRANSMISSION ASSEMBLY . . . . . . ..
2WD . . . . . . . . . . . . . . . . . . .
2WD : Exploded View . . . . . . . . . . ...
2WD : Removal and Installation . . . . . . .
4WD . . . . . . . . . . . . . . . . . . .
4WD : Exploded View . . . . . . . . . . ...
4WD : Removal and Installation . . . . . . .
UNIT DISASSEMBLY AND ASSEMBLY ..
OVERHAUL . . . . . . . . . . . . . ..
Exploded View . . . . . . . . . . . . . ..
Oil Channel . . . . . . . . . . . . . . ...
Location of Adjusting Shims, Needle Bearings,
Thrust Washers and Snap Rings . . . . . . ..
DISASSEMBLY . . . . . . . . . . . .
Disassembly . . . . . . . . . . . . . . ..
OIL PUMP . . . . . . . . . . . . . . .
Exploded View . . . . . . . . . . . . . ..
Disassembly and Assembly . . . . . . . . ..
FRONT SUN GEAR, 3RD ONE-WAY
CLUTCH . . . . . . . . . . . . . . ...
Exploded View . . . . . . . . . . . . . ..
Disassembly and Assembly . . . . . . . . ..
FRONT CARRIER, INPUT CLUTCH, REAR
INTERNAL GEAR . . . . . . . . . . . .
Exploded View . . . . . . . . . . . . . ..
Disassembly and Assembly . . . . . . . . ..
MID SUN GEAR, REAR SUN GEAR, HIGH
AND LOW REVERSE CLUTCH HUB . . . ..
Exploded View . . . . . . . . . . . . . ..
Disassembly and Assembly . . . . . . . . ..
HIGH AND LOW REVERSE CLUTCH . . . .
Exploded View . . . . . . . . . . . . . ..
Disassembly and Assembly . . . . . . . . ..
DIRECT CLUTCH . . . . . . . . . . . .
Exploded View . . . . . . . . . . . . . ..
Disassembly and Assembly . . . . . . . . ..
ASSEMBLY . . . . . . . . . . . . . ..
Assembly (1) . . . . . . . . . . . . . . .
Adjustment . . . . . . . . . . . . . . .
Assembly (2) . . . . . . . . . . . . . . .
August 2012
2012 Pathfinder
TM-5
C
E
F
G
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K
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A
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TM
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SERVICE DATA AND SPECIFICATIONS
(SDS) . . . . . . . . . . . . . . ..
SERVICE DATA AND SPECIFICATIONS
(SDS) . . . . . . . . . . . . . . . .
General Specification . . . . . . . . . . .
Vehicle Speed at Which Gear Shifting Occurs . ..
Vehicle Speed at Which Lock-up Occurs/Releas-
es . . . . . . . . . . . . . . . . . . ...
Stall Speed . . . . . . . . . . . . . . .
Line Pressure . . . . . . . . . . . . . .
A/T Fluid Temperature Sensor . . . . . . . ..
Input Speed Sensor . . . . . . . . . . . ...
Output Speed Sensor . . . . . . . . . . .
Reverse brake . . . . . . . . . . . . . ...
Total End Play . . . . . . . . . . . . . ...
August 2012
2012 Pathfinder
TM-6
< BASIC INSPECTION >
DIAGNOSIS AND REPAIR WORKFLOW
BASIC INSPECTION
DIAGNOSIS AND REPAIR WORKFLOW
How to Perform Trouble Diagnosis for Quick and Accurate Repair
INFOID:0000000007357086
INTRODUCTION
The TCM receives a signal from the output speed sensor, accelera-
tor pedal position sensor (throttle position sensor) or transmission
range switch. Then provides shift control or lock-up control via A/T
solenoid valves.
The TCM also communicates with the ECM by means of a signal
sent from sensing elements used with the OBD-related parts of the
A/T system for malfunction-diagnostic purposes. The TCM is capa-
ble of diagnosing malfunctioning parts while the ECM can store mal-
functions in its memory.
Input and output signals must always be correct and stable in the
operation of the A/T system. The A/T system must be in good oper-
ating condition and be free of valve seizure, solenoid valve malfunc-
tion, etc.
It is much more difficult to diagnose an error that occurs intermit-
tently rather than continuously. Most intermittent errors are caused
by poor electric connections or improper wiring. In this case, careful
checking of suspected circuits may help prevent the replacement of
good parts.
A visual check only may not find the cause of the errors. A road test
with CONSULT (or GST) or a circuit tester connected should be per-
formed. Follow the “DETAILED FLOW”.
Before undertaking actual checks, take a few minutes to talk with a
customer who approaches with a driveability complaint. The cus-
tomer can supply good information about such errors, especially
intermittent ones. Find out what symptoms are present and under
what conditions they occur. A “Diagnostic work sheet” as shown on
the example (Refer to
) should be used.
Start your diagnosis by looking for “conventional” errors first. This will
help troubleshoot driveability errors on an electronically controlled
engine vehicle.
Also check related Service bulletins.
DETAILED FLOW
1.
COLLECT THE INFORMATION FROM THE CUSTOMER
Get the detailed information from the customer about the symptom (the condition and the environment when
the incident/malfunction occurred) using diagnosis worksheet. Refer to
.
>> GO TO 2.
2.
CHECK SYMPTOM 1
Check the following items based on the information obtained from the customer.
• Fail-safe. Refer to
• A/T fluid inspection. Refer to
TM-157, "Checking the A/T Fluid (ATF)"
• Stall test. Refer to
• Line pressure test. Refer to
SAT631IB
SAT632I
SEF234G
August 2012
2012 Pathfinder
DIAGNOSIS AND REPAIR WORKFLOW
TM-7
< BASIC INSPECTION >
C
E
F
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A
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TM
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>> GO TO 3.
3.
CHECK DTC
1. Check DTC.
2. Perform the following procedure if DTC is detected.
• Record DTC.
• Erase DTC. Refer to
TM-35, "OBD-II Diagnostic Trouble Code (DTC)"
.
Is any DTC detected?
YES
>> GO TO 4.
NO
>> GO TO 6.
4.
PERFORM DIAGNOSTIC PROCEDURE
Perform “Diagnosis Procedure” for the displayed DTC.
>> GO TO 5.
5.
PERFORM DTC CONFIRMATION PROCEDURE
Perform “DTC CONFIRMATION PROCEDURE”.
Is DTC detected?
YES
>> GO TO 4.
NO
>> GO TO 6.
6.
CHECK SYMPTOM 2
Try to confirm the symptom described by the customer.
Is any malfunction present?
YES
>> GO TO 7.
NO
>> INSPECTION END
7.
ROAD TEST
Perform “ROAD TEST”. Refer to
TM-167, "Check Before Engine Is Started"
>> GO TO 8.
8.
CHECK SYMPTOM 3
Try to confirm the symptom described by the customer.
Is any malfunction present?
YES
>> GO TO 2.
NO
>> INSPECTION END
Diagnostic Work Sheet
INFOID:0000000007357087
INFORMATION FROM CUSTOMER
KEY POINTS
•
WHAT
. . Vehicle and A/T model
•
WHEN
. . Date, Frequencies
•
WHERE
. . Road conditions
•
HOW
. . Operating conditions, Symptoms
Customer name MR/MS
Model and Year
VIN
Trans. Model
Engine
Mileage
Malfunction Date
Manuf. Date
In Service Date
Frequency
Continuous
Intermittent ( times a day)
August 2012
2012 Pathfinder
TM-8
< BASIC INSPECTION >
DIAGNOSIS AND REPAIR WORKFLOW
DIAGNOSTIC WORK SHEET
Symptoms
Vehicle does not move. (
Any position
Particular position)
No up-shift (
1st
→
2nd
2nd
→
3rd
3rd
→
4th
4th
→
5th)
No down-shift (
5th
→
4th
4th
→
3rd
3rd
→
2nd
2nd
→
1st)
Lock-up malfunction
Shift point too high or too low.
Shift shock or slip (
N
→
D
N
→
R
Lock-up
Any drive position)
Noise or vibration
No kick down
No pattern select
Cannot be changed to manual mode
Others
(
)
A/T CHECK indicator lamp (with
manual mode)
Continuously lit
Not lit
O/D OFF indicator lamp (without
manual mode)
Continuously lit
Not lit
Malfunction indicator lamp (MIL)
Continuously lit
Not lit
1
Read the item on cautions concerning fail-safe and understand the customer's complaint.
2
A/T fluid inspection, stall test and line pressure test
A/T fluid inspection
Leak (Repair leak location.)
State
Amount
Stall test
Torque converter one-way clutch
Front brake
High and low reverse clutch
Low coast brake
Forward brake
Reverse brake
Forward one-way clutch
1st one-way clutch
3rd one-way clutch
Engine
Line pressure low
Except for input
clutch and direct clutch,
clutches and brakes
OK
Line pressure test - Suspected part:
3
Perform self-diagnosis. — Check detected items to repair or replace malfunctioning part.
4
Perform road test.
5-1
Check before engine is started
5-2
Check at idle
5-3
Cruise test
Part 1
Part 2
Part 3
Check malfunction phenomena to repair or replace malfunctioning part after completing all road test.
Refer to
5
Drive vehicle to check that the malfunction phenomenon has been resolved.
6
Erase the results of the self-diagnosis from the TCM and the ECM.
August 2012
2012 Pathfinder
A/T CONTROL SYSTEM
TM-9
< SYSTEM DESCRIPTION >
C
E
F
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H
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A
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TM
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SYSTEM DESCRIPTION
A/T CONTROL SYSTEM
Cross-Sectional View
INFOID:0000000007357088
2WD models
SCIA5267E
1.
Front planetary gear
2.
Mid planetary gear
3.
Rear planetary gear
4.
Direct clutch
5.
High and low reverse clutch
6.
Reverse brake
7.
Drum support
8.
Forward brake
9.
Low coast brake
10. Input shaft
11. Torque converter
12. Oil pump
13. Front brake
14. 3rd one-way clutch
15. Input clutch
16. 1st one-way clutch
17. Control valve with TCM
18. Forward one-way clutch
19. Rear extension
20. Output shaft
August 2012
2012 Pathfinder
TM-10
< SYSTEM DESCRIPTION >
A/T CONTROL SYSTEM
4WD models
Shift Mechanism
INFOID:0000000007357089
The automatic transmission uses compact triple planetary gear systems to improve power-transmission effi-
ciency, simplify construction and reduce weight.
It also employs an optimum shift control and super wide gear ratios. They improve starting performance and
acceleration during medium and high-speed operation.
CONSTRUCTION
SCIA5268E
1.
Front planetary gear
2.
Mid planetary gear
3.
Rear planetary gear
4.
Direct clutch
5.
High and low reverse clutch
6.
Reverse brake
7.
Drum support
8.
Forward brake
9.
Low coast brake
10. Input shaft
11. Torque converter
12. Oil pump
13. Front brake
14. 3rd one-way clutch
15. Input clutch
16. 1st one-way clutch
17. Control valve with TCM
18. Forward one-way clutch
19. Adapter case
20. Output shaft
August 2012
2012 Pathfinder
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