Automatic Transaxle Diagnosis

Diagnostic Troubleshooting Flow
Introduction To A/T Diagnosis
Introduction To A/T Key Interlock And Shift Lock Mechanisms
A/T Diagnostic Troubleshooting Strategy
A/T Key Interlock And Shift Lock Mechanisms Diagnostic Troubleshooting Strategy
A/T Diagnostic Trouble Code Diagnosis
- Check "N" Range Light
- On-Board Diagnostics
- How To Read And Erase Diagnostic Trouble Codes
- Inspection Using Scan Tool, Road Test And Data List
Fail-Safe/Backup Function
Road Test
Torque Converter Stall Test
- Notes
- Torque Converter Stall Test Judgement Results
Hydraulic Pressure Tests
- Notes
- Standard Hydraulic Pressure Test
- Hydraulic Pressure Test Diagnosis Table
- Oil Seal Layout
Hydraulic Circuit
- Parking And Neutral
- 1ST Gear
- 2ND Gear
- 3RD Gear
- 4TH Gear
- Reverse
- Fail-Safe (In Case Of Fail-Safe Valve A Operation)
- Fail-Safe (In Case Of Fail-Safe Valve B Operation)
Line Pressure Adjustment
Diagnostic Trouble Code Chart
Diagnostic Trouble Code Procedures
- DTC 11: TP Sensor System < Short Circuit >
  - Circuit Operation
  - DTC Set Conditions
  - TROUBLESHOOTING HINTS (The most likely causes for this code to be set are:)
  - Diagnosis
- DTC 12: TP Sensor System < Open Circuit >
  - TP Sensor System Circuit
  - Circuit Operation
  - DTC Set Conditions
  - TROUBLESHOOTING HINTS (The most likely causes for this code to be set are:)
  - Diagnosis
- DTC 14: TP Sensor System < Maladjusted Sensor >
  - TP Sensor System Circuit
  - Circuit Operation
  - DTC Set Conditions
  - TROUBLESHOOTING HINTS (The most likely causes for this code to be set are:)
  - Diagnosis
- DTC 15: A/T Fluid Temperature Sensor System (Open Circuit)
  - Circuit Operation
  - DTC Set Conditions
  - TROUBLESHOOTING HINTS (The most likely causes for this code to be set are:)
  - Diagnosis
- DTC 16: A/T Fluid Temperature Sensor System (Short Circuit)
  - A/T Fluid Temperature Sensor System Circuit
  - Circuit Operation
  - DTC Set Conditions
  - TROUBLESHOOTING HINTS (The most likely causes for this code to be set:)
  - Diagnosis
- DTC 21: Crankshaft Position Sensor System
  - Circuit Operation
  - DTC Set Conditions
  - TROUBLESHOOTING HINTS (The most likely causes for this code to be set are:)
  - Diagnosis
- DTC 22: Input Shaft Speed Sensor System
  - Circuit Operation
  - DTC Set Conditions
  - TROUBLESHOOTING HINTS (The most likely causes for this code to be set are:)
  - Diagnosis
- DTC 23: Output Shaft Speed Sensor System
  - Circuit Operation
  - DTC Set Conditions
  - TROUBLESHOOTING HINTS (The most likely causes for this code to be set are:)
  - Diagnosis
- DTC 26: Stoplight Switch System
  - Circuit Operation
  - DTC Set Conditions
  - TROUBLESHOOTING HINTS (The most likely causes for this code to be set are:)
  - Diagnosis
- DTC 27: Park/Neutral Position Switch System (Open Circuit)
  - Circuit Operation
  - DTC Set Conditions
  - TROUBLESHOOTING HINTS (The most likely causes for this code to be set are:)
  - Diagnosis
- DTC 28: Park/Neutral Position Switch System (Short Circuit)
  - Park/Neutral Position Switch System Circuit
  - Circuit Operation
  - DTC Set Conditions
  - TROUBLESHOOTING HINTS (The most likely causes for this code to be set are:)
  - Diagnosis
- DTC 31: Low-Reverse Solenoid Valve System
  - Circuit Operation
  - DTC Set Conditions
  - TROUBLESHOOTING HINTS (The most likely causes for this code to be set are:)
  - Diagnosis
- DTC 32: Underdrive Solenoid Valve System
  - Solenoid Valve System Circuit
  - Circuit Operation
  - DTC Set Conditions
  - TROUBLESHOOTING HINTS (The most likely causes for this code to be set are:)
  - Diagnosis
- DTC 33: Second Solenoid Valve System
  - Solenoid Valve System Circuit
  - Circuit Operation
  - DTC Set Conditions
  - TROUBLESHOOTING HINTS (The most likely causes for this code to be set are:)
  - Diagnosis
- DTC 34: Overdrive Solenoid Valve System
  - Solenoid Valve System Circuit
  - Circuit Operation
  - DTC Set Conditions
  - TROUBLESHOOTING HINTS (The most likely causes for this code to be set are:)
  - Diagnosis
- DTC 36: Torque Converter Clutch Solenoid Valve System
  - Solenoid Valve System Circuit
  - Circuit Operation
  - DTC Set Conditions
  - TROUBLESHOOTING HINTS (The most likely causes for this code to be set are:)
  - Diagnosis
- DTC 41: 1st Gear Incorrect Ratio, DTC 42: 2nd Gear Incorrect Ratio, DTC 43: 3rd Gear Incorrect Ratio, DTC 44: 4th Gear Incorrect Ratio, DTC 46: Reverse Gear Incorrect Ratio
  - Circuit Operation
  - DTC Set Conditions
  - TROUBLESHOOTING HINTS (The most likely causes for this code to be set are:)
  - Diagnosis
- DTC 52: Torque Converter Clutch System
  - DTC Set Conditions
  - TROUBLESHOOTING HINTS (The most likely causes for this code to be set are:)
  - Diagnosis
- DTC 53: Torque Converter Clutch is Stuck on
  - DTC Set Conditions
  - TROUBLESHOOTING HINTS (The most likely causes for this code to be set are:)
  - Diagnosis
- DTC 54: A/T Control Relay System
  - Circuit Operation
  - DTC Set Conditions
  - TROUBLESHOOTING HINTS (The most likely causes for this code to be set are:)
  - Diagnosis
- DTC 56: "N" Range Light System
  - Circuit Operation
  - DTC Set Conditions
  - TROUBLESHOOTING HINTS (The most likely causes for this code to be set are:)
  - Diagnosis
Symptom Chart < Automatic Transaxle >
Symptom Procedures < Automatic Transaxle >
- INSPECTION PROCEDURE 1: Engine does not Crank
- INSPECTION PROCEDURE 2: Does not Move Forward
- INSPECTION PROCEDURE 3: Does not Move Backward
- INSPECTION PROCEDURE 4: Does not Move (forward or backward)
- INSPECTION PROCEDURE 5: Engine Stalls when Moving Selector Lever from "N" to "D" or "N" to "R"
- INSPECTION PROCEDURE 6: Shift Shock when Shifting from "N" to "D" and Long Delay
- INSPECTION PROCEDURE 7: Shift Shock when Shifting from "N" to "R" and Long Delay
- INSPECTION PROCEDURE 8: Shift Shock when Shifting from "N" to "D," "N" to "R" and Long Delay
- INSPECTION PROCEDURE 9: Shift shock and slipping
- INSPECTION PROCEDURE 10: Does not Shift Properly All Points (Early or Late Shift Points)
- INSPECTION PROCEDURE 11: Does not Shift Properly Some Points (Early or Late Shift Points)
- INSPECTION PROCEDURE 12: No Diagnostic Trouble Codes (Does not Shift)
- INSPECTION PROCEDURE 13: Poor Acceleration
  - Comment
  - Diagnosis
- INSPECTION PROCEDURE 14: Vibration
  - Comment
  - Diagnosis
- INSPECTION PROCEDURE 15: Vehicle Shifts Differently with A/C Engaged
- INSPECTION PROCEDURE 16: Transaxle won't Downshift under Load with Auto- cruise Engaged.
- INSPECTION PROCEDURE 17: Vehicle Speed Signal System
- INSPECTION PROCEDURE 18: Shift Switch Assembly System
- Inspection Procedure 19: Shift Indicator Display System
Symptom Chart < A/T Faulty Operation Prevention Mechanism >
Symptom Procedures < Key Interlock And SHFT Lock Mechanisms >
- INSPECTION PROCEDURE 1: Selector Lever can be Moved from "P" to "R" Position without Depressing Brake Pedal when Ignition Key is at any Position Other than "LOCK" (OFF) Position.
- INSPECTION PROCEDURE 2: Selector Lever cannot be Moved from "P" to "R" position with Brake Pedal Depressed when Ignition Key is at any Position Other than "LOCK" (OFF) Position.
- INSPECTION PROCEDURE 3: Selector Lever can be Moved from "P" to "R" Position with Brake Pedal Depressed when ignition key is at "LOCK" (OFF) Position.
- INSPECTION PROCEDURE 4: Selector Lever cannot be Moved from "P" to "R" Position Smoothly.
- INSPECTION PROCEDURE 5: Selector Lever cannot be Moved from "R" to "P" Position.
- INSPECTION PROCEDURE 6: Ignition Key cannot be Turned to the "LOCK" (OFF) Position when Selector Lever is at "P" Position.
- INSPECTION PROCEDURE 7: Ignition Key can be Turned to the "LOCK" (OFF) Position when Selector Lever is at any Position Other than "P" Position.
Data List Reference Table
Actuator Test Reference Table
INVECS-II Cancel Command
Pcm Terminal Voltage Reference Chart For Transaxle Operation
Pcm Terminal Resistance And Continuity Inspection Chart
Inspection Procedure Using An Oscilloscope