Nissan 2008 Pathfinder TRANSMISSION User Manual

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TRANSMISSION & DRIVELINE
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CONTENTS
TRANSAXLE & TRANSMISSION
BASIC INSPECTION .................................... 6
DIAGNOSIS AND REPAIR WORKFLOW .......... 6
How to Perform Trouble Diagnosis For Quick and
Accurate Repair ........................................................
6
Diagnostic Work Sheet ..............................................7
FUNCTION DIAGNOSIS ............................... 9
A/T CONTROL SYSTEM ..................................... 9
Cross-Sectional View ................................................9
Shift Mechanism ......................................................10
TCM Function ..........................................................21
CAN Communication ...............................................23
Input/Output Signal of TCM .....................................24
Line Pressure Control .............................................24
Shift Control ............................................................26
Lock-up Control .......................................................27
Engine Brake Control ..............................................28
Control Valve ...........................................................28
A/T Electrical Parts Location ...................................30
A/T SHIFT LOCK SYSTEM ................................31
System Description (With Manual Mode) ................31
Shift Lock System Electrical Parts Location (With
Manual Mode) .........................................................
31
System Description (W/O Manual Mode) ................31
Shift Lock System Electrical Parts Location (W/O
Manual Mode) .........................................................
32
ON BOARD DIAGNOSTIC (OBD) SYSTEM ......33
Introduction .............................................................33
OBD-II Function for A/T System ..............................33
One or Two Trip Detection Logic of OBD-II ............33
OBD-II Diagnostic Trouble Code (DTC) ..................33
Malfunction Indicator Lamp (MIL) ............................34
DIAGNOSIS SYSTEM (TCM) .............................35
CONSULT-III Function (TRANSMISSION) .............35
Diagnosis Procedure without CONSULT-III ............42
COMPONENT DIAGNOSIS .........................45
DTC U1000 CAN COMMUNICATION LINE .....45
Description ...............................................................45
On Board Diagnosis Logic .......................................45
Possible Cause ........................................................45
DTC Confirmation Procedure ..................................45
Diagnosis Procedure ...............................................45
DTC P0615 START SIGNAL CIRCUIT .............46
Description ...............................................................46
CONSULT-III Reference Value in Data Monitor
Mode ........................................................................
46
On Board Diagnosis Logic .......................................46
Possible Cause ........................................................46
DTC Confirmation Procedure ..................................46
Diagnosis Procedure ...............................................46
DTC P0700 TCM ...............................................49
Description ...............................................................49
On Board Diagnosis Logic .......................................49
Possible Cause ........................................................49
DTC Confirmation Procedure ..................................49
Diagnosis Procedure ...............................................49
DTC P0705 PARK/NEUTRAL POSITION
SWITCH .............................................................
50
Description ...............................................................50
CONSULT-III Reference Value in Data Monitor
Mode ........................................................................
50
On Board Diagnosis Logic .......................................50
Possible Cause ........................................................50
DTC Confirmation Procedure ..................................50
Diagnosis Procedure ...............................................50
DTC P0717 TURBINE REVOLUTION SEN-
SOR ...................................................................
52
Description ...............................................................52
CONSULT-III Reference Value in Data Monitor
Mode ........................................................................
52
On Board Diagnosis Logic .......................................52
Possible Cause ........................................................52
DTC Confirmation Procedure ..................................52

Nissan 2008 Pathfinder TRANSMISSION Specifications

General

Brand	Nissan
Model	2008 Pathfinder TRANSMISSION
Category	Automobile
Language	English

Summary

BASIC INSPECTION

DIAGNOSIS AND REPAIR WORKFLOW

Outlines the systematic approach to diagnosing and repairing transmission issues.

FUNCTION DIAGNOSIS

A/T CONTROL SYSTEM

Details the automatic transmission control system's components, functions, and views.

ON BOARD DIAGNOSTIC (OBD) SYSTEM

Explains the OBD-II system for A/T, including detection logic and DTCs.

DIAGNOSIS SYSTEM (TCM)

Covers TCM diagnosis functions, CONSULT-III reference values, and test modes.

COMPONENT DIAGNOSIS

DTC U1000 CAN COMMUNICATION LINE

Diagnosis for CAN communication circuit malfunction.

DTC P0615 START SIGNAL CIRCUIT

Diagnosis for starter relay/circuit malfunction.

DTC P0700 TCM

Diagnosis procedure for TCM malfunction.

DTC P0705 PARK/NEUTRAL POSITION SWITCH

Diagnosis for park/neutral position switch circuit issues.

DTC P0717 TURBINE REVOLUTION SENSOR

Diagnosis for turbine revolution sensor circuit issues.

DTC P0720 VEHICLE SPEED SENSOR A/T (REVOLUTION SENSOR)

Diagnosis for vehicle speed sensor circuit issues.

DTC P0731 A/T 1ST GEAR FUNCTION

Diagnosis for malfunction when A/T does not shift to 1st gear.

DTC P0740 TORQUE CONVERTER CLUTCH SOLENOID VALVE

Diagnosis for TCC solenoid valve malfunction.

DTC P1710 A/T FLUID TEMPERATURE SENSOR CIRCUIT

Diagnosis for A/T fluid temperature sensor circuit issues.

DTC P1730 A/T INTERLOCK

Diagnosis for A/T interlock system malfunction.

MAIN POWER SUPPLY AND GROUND CIRCUIT

Diagnosis for TCM power supply and ground circuits.

BRAKE SIGNAL CIRCUIT

Diagnosis procedure for the brake signal circuit.

A/T SHIFT LOCK SYSTEM

Details terminals and reference values for the shift lock system.

OVERDRIVE CONTROL SWITCH

Diagnosis procedure for the overdrive control switch.

ECU DIAGNOSIS

TCM

Lists TCM terminals, reference values, and wiring diagrams.

SYSTEM SYMPTOM

A/T Check Indicator Lamp Does Not Come On (With Manual Mode)

Diagnosis for A/T check lamp not illuminating in manual mode.

Engine Cannot Be Started in "P" or "N" Position

Troubleshooting for starting issues in P or N positions.

Vehicle Does Not Creep Forward in "D" Position

Diagnosis for lack of vehicle creep in D position.

A/T Does Not Shift: D1→ D2

Diagnosis for failure to shift from D1 to D2.

A/T Does Not Shift: D4→ D5

Diagnosis for failure to shift from D4 to D5.

A/T Does Not Perform Lock-up

Diagnosis for failure to perform lock-up.

Cannot Be Changed to Manual Mode

Diagnosis for inability to shift into manual mode.

Symptom Chart

A reference chart for diagnosing various transmission symptoms.

PRECAUTIONS

PRECAUTIONS

General safety precautions for SRS and OBD systems.

Service Notice or Precaution

Notices regarding ATF cooler service and OBD-II self-diagnosis.

PREPARATION

Special Service Tool

Lists special tools required for specific repair procedures.

Commercial Service Tool

Lists common service tools used for transmission maintenance.

ON-VEHICLE MAINTENANCE

A/T FLUID

Procedures for checking and changing A/T fluid.

A/T Fluid Cooler Cleaning

Steps for cleaning the automatic transmission fluid cooler.

INSPECTIONS BEFORE TROUBLE DIAGNOSIS

Stall Test

Procedure to check stall speed and diagnose potential issues.

Line Pressure Test

Procedure for measuring and diagnosing line pressure.

ROAD TEST

Check at Idle

Checks to perform with the engine idling.

Cruise Test - Part 1

Procedure for cruise testing starting from D1.

ON-VEHICLE REPAIR

SHIFT CONTROL SYSTEM

Details removal and installation of the shift control system.

OIL PAN

Procedures for removing and installing the transmission oil pan.

CONTROL VALVE WITH TCM

Procedures for removing and installing the control valve and TCM.

AIR BREATHER HOSE

Procedures for removing and installing the air breather hose.

TRANSMISSION ASSEMBLY

2WD : Exploded View

Exploded view of the 2WD transmission assembly.

4WD : Exploded View

Exploded view of the 4WD transmission assembly.

OVERHAUL

DISASSEMBLY AND ASSEMBLY

Detailed procedures for transmission disassembly and assembly.

Location of Adjusting Shims, Needle Bearings, Thrust Washers and Snap Rings

Identifies locations of critical small parts during overhaul.

DISASSEMBLY

Disassembly

Step-by-step instructions for disassembling transmission components.

ASSEMBLY

Assembly (1)

Initial assembly steps for transmission components.

Assembly (2)

Subsequent assembly steps for transmission components.

SERVICE DATA AND SPECIFICATIONS (SDS)

General Specification

Key specifications for transmission models and fluids.

Vehicle Speed at Which Gear Shifting Occurs

Data on vehicle speeds for gear shifts under various conditions.

Stall Speed

Specifications for stall speed measurements.

Line Pressure

Specifications for line pressure measurements.

Total End Play

Specifications for measuring and adjusting total end play.