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MODEL SELECTION INDEX
MY 2005 WL Series - Service Information
Section 7E3Hydra-Matic 5L40-E – Automatic Transmission: – H
1 General Information
1.1 How to Use This Section
1.2 Transmission General Description
1.3 Transmission Definitions and Abbreviations
Throttle Positions
Shift Conditions Definitions
Noise Conditions
Transmission Abbreviations
2 Diagnosis
2.1 Basic Knowledge Required
2.2 Functional Test Procedure
Functional Test Procedure Chart
2.3 Transmission Fluid Level, Check and Correct
2.4 Line Pressure Check
2.5 Road Test Procedure
Introduction
Electrical Function Check
Upshift Control and Torque Converter Clutch (TCC) Apply
Preliminary Checks:
Part Throttle Detent Downshift
Full Throttle Detent Downshift
Manual Downshifts
Coasting Downshifts
Manual Gear Range Selection
2.6 Torque Converter Diagnosis Procedure
Torque Converter Stator
Poor Acceleration at Low Speed
Poor Acceleration at High Speed
Noise
Torque Converter Clutch Shudder
If Shudder Occurs During TCC Apply or Release
If Shudder Occurs After TCC has Applied
2.7 Torque Converter / Flexplate Vibration Test
Isolating Vibration
Indexing Torque Converter
2.8 Noise and Vibration Analysis
2.9 Clutch Plate Diagnosis
Composition Plate Surface
Steel Plate Surface
Causes of Burned Clutch Plates
2.10 Engine Coolant in Transmission
2.11 Fluid Leak Diagnosis and Repair
Methods for Locating Leaks
General Method
Powder Method
Dye and Black Light Method
Find the Cause of the Leak
Gaskets:
Seals:
Possible Points of Fluid Leaks
Transmission Fluid Pan
Case Leak
Leak at the Torque Converter End
Leak at the Vent
Case Porosity Repair
2.12 Shift Solenoid Leak Test
2.13 Range Reference Chart
3 Symptoms Diagnosis
3.1 Symptoms Diagnosis Table
3.2 Diagnostic Tables
Automatic Transmission Overheating
Buzz Noise or High Frequency Rattle Sound
Degraded 1–2 and 2–1 Shifts
Degraded 2–3 and 3–2 Shifts
Degraded 4–5 Shift
Drives with Selector Lever in Position N
Fifth Gear Only
First and Second Gears Only
First Gear Only
First, Fourth and Fifth Gears Only
Fluid Pressure High or Low
Harsh Shift 4–5, or 5–4
Harsh Shift D–R
Harsh Shifts
Harsh Torque Converter Clutch (TCC) Apply
Inaccurate Shift Points
No Drive in All Ranges
No Engagement of Torque Converter Clutch (TCC)
No Engine Braking
No Engine Braking in First Gear
No Engine Braking in First, Second and Third Gear
No Engine Braking in Second Gear
No Engine Braking in Third Gear
No Fifth Gear
No First Gear
No Fourth Gear or Slips in Fourth Gear
No Reverse or Slips in Reverse
No Second Gear
No Third Gear
Noise in Random Ranges
Popping Noise
Power Mode Switch / Indicator Always On or Inoperative
Second and Third Gears Only
Slips or Shudders in First Gear
Slips while Shifting
Whine Noise Varying with RPM or Fluid Pressure
4 5L40-E Shift Speed Charts
4.1 Introduction
4.2 Shift Patterns – All With 3.6L Alloytec190 Engine
5 Power / Fluid Flow and Circuit Descriptions
6 Special Tools