Automatic Transmission Diagnostics, Adaptations, and Relearns

01 AT01 - Automatic Transmission Diagnostic Mindset and System Overview

• AT01-L01 – What an Automatic Transmission Actually Does
• AT01-L02 – Complaint, Context, Verification, and the Road-Test Baseline
• AT01-L03 – Reading Transmission Symptoms Without Jumping to Rebuild Conclusions

02 AT02 - Safety, Fluid, Service Information, and Legal Boundaries

• AT02-L01 – ATF Types, Specifications, Friction Modifiers, and Compatibility Risk
• AT02-L02 – Lift Safety, Hot Fluid, Rotating Driveline, and Road-Test Risk
• AT02-L03 – OEM Service Information, TSBs, Warranty Boundaries, and Stop-Work Rules

03 AT03 - Transmission Architecture and Powerflow Fundamentals

• AT03-L01 – Torque Converter, Pump, Planetary Gearsets, and Clutch Elements
• AT03-L02 – Gear Ratio Logic, Powerflow Charts, and Applied Element Thinking
• AT03-L03 – Valve Body, Separator Plate, Accumulators, and Hydraulic Routing

04 AT04 - Electronic Controls, TCM Strategy, and Scan-Tool Foundations

• AT04-L01 – TCM Inputs, Outputs, Shift Strategy, and Torque Management
• AT04-L02 – Essential Transmission PIDs: Gear Command, Slip, Temp, Pressure, and Status
• AT04-L03 – Generic OBD vs Enhanced Transmission Module Access

05 AT05 - Fluid Condition, Level Checking, Leaks, and Service Quality

• AT05-L01 – Fluid Level Methods: Dipstick, Standpipe, Temperature Window, and Fill Procedure
• AT05-L02 – Burnt Fluid, Debris, Metal, Clutch Material, and Pan Inspection Logic
• AT05-L03 – Leak Paths, Cooler Lines, Case Seals, Venting, and Comeback Prevention

06 AT06 - Road-Test Strategy and Symptom Capture

• AT06-L01 – Road-Test Planning: Cold, Hot, Light Throttle, Heavy Throttle, Coast, and Manual Modes
• AT06-L02 – Shift Feel Language: Flare, Bind-Up, Harsh Engagement, Slip, Shudder, and Bump
• AT06-L03 – Using Freeze Frame, Event Logs, and Customer Timeline to Reproduce Intermittents

07 AT07 - Pressure Testing and Hydraulic Diagnosis

• AT07-L01 – Line Pressure, Regulator Logic, Pump Output, and Pressure Tap Safety
• AT07-L02 – Clutch Feed Pressure, Solenoid Command, and Hydraulic Proof
• AT07-L03 – Low Pressure, High Pressure, Delayed Rise, and Pressure Drop Patterns

08 AT08 - Solenoids, Valve Body Faults, and Hydraulic Control

• AT08-L01 – Shift Solenoids, Pressure Control Solenoids, PWM, and On-Off Logic
• AT08-L02 – Valve Body Wear, Sticking Valves, Cross-Leaks, and Separator Plate Problems
• AT08-L03 – Bidirectional Solenoid Tests and Current Ramp Interpretation

09 AT09 - Torque Converter and Lock-Up Diagnosis

• AT09-L01 – Torque Converter Multiplication, Stator Logic, and Stall-Speed Boundaries
• AT09-L02 – TCC Apply, Release, Slip RPM, Shudder, and Duty-Cycle Strategy
• AT09-L03 – Converter Failure Evidence, Debris Spread, Cooler Flush, and Rebuild Decisions

10 AT10 - Gear Ratio, Slip Codes, and DTC Strategy

• AT10-L01 – P0700, P07xx, Ratio Codes, Solenoid Codes, and Transmission MIL Logic
• AT10-L02 – Gear Ratio Calculation, Input/Output Speed Sensors, and Slip Confirmation
• AT10-L03 – Pending, History, Permanent, and Manufacturer-Specific Transmission Codes

11 AT11 - Adaptations, Relearns, and Shift Quality Calibration

• AT11-L01 – What Transmission Adaptations Actually Learn
• AT11-L02 – When to Reset Adaptations and When Not To
• AT11-L03 – Quick Learn, Drive Relearn, Garage Shift Relearn, and Post-Service Verification

12 AT12 - Software Updates, TSBs, Coding, and Module Replacement

• AT12-L01 – TSBs, Calibration Updates, Shift Complaints, and Programming Decision Logic
• AT12-L02 – TCM Replacement, Coding, VIN Write, Immobilizer/Network Dependencies

13 AT13 - Cooling, Heat Management, and Fluid Life

• AT13-L01 – Transmission Temperature, Cooler Flow, Heat Exchangers, and Overheat Logic
• AT13-L02 – Cooler Restriction, Cross-Contamination, Bypass Valves, and Flow Testing
• AT13-L03 – Towing, Load, Thermal Strategy, and Fluid Life Planning

14 AT14 - CVT Diagnostics and Relearns

• AT14-L01 – CVT Belt/Chain, Pulley Ratio, Step Motor, and Pressure Strategy
• AT14-L02 – CVT Fluid, Judder, Ratio Codes, Pressure Faults, and Relearn Procedures

15 AT15 - DCT and Automated Manual Diagnostics

• AT15-L01 – Dry and Wet DCT Architecture, Clutch Packs, Mechatronics, and Gear Actuators
• AT15-L02 – DCT Adaptations, Kiss Point, Clutch Learn, Shudder, and Launch Complaints
• AT15-L03 – Mechatronic Unit Faults, Hydraulic Pressure, and Replacement Boundaries

16 AT16 - Hybrid and EV Transmission / eAxle Boundaries

• AT16-L01 – Hybrid eCVT, Power-Split Devices, Motor-Generators, and Transaxle Logic
• AT16-L02 – EV eAxle Gear Reduction, Noise, Fluid, Bearings, and Thermal Boundaries

17 AT17 - Noise, Vibration, Harshness, Mounts, Axles, and False Transmission Faults

• AT17-L01 – Mounts, Axles, Engine Misfire, Driveline Lash, and False Shift Complaints
• AT17-L02 – Whine, Growl, Rattle, Clunk, and Vibration Localization
• AT17-L03 – Fluid Pump Noise, Bearing Noise, Differential Noise, and Road-Speed Logic

18 AT18 - Repair Decision-Making, Rebuild vs Replace vs External Repair

• AT18-L01 – External Repair vs Valve Body vs Converter vs Full Overhaul Decision Logic
• AT18-L02 – Comeback Prevention: Cooler Flush, Debris Control, Calibration, and Final Road-Test
• AT18-L03 – Customer Communication, Estimate Language, Risk Notes, and Release Documentation

19 AT19 - Advanced Case Studies and Professional Mastery

• AT19-L01 – Case Study: Delayed Engagement Cold, Normal Hot, No Codes
• AT19-L02 – Case Study: Harsh 2-3 Shift After Fluid Service and Adaptation Reset
• AT19-L03 – Case Study: Intermittent Slip, Ratio Code, Heat Soak, and Final Recommendation

20 CAPSTONE - Integrated Transmission Diagnostic Cases and Professional Release

• Capstone Final Assessment and Professional Release Logic