Diagnosis - R4A51, V4A51 & V5A51
- Application
- Identification
- Description & Operation
- Component Locations
- Trouble Shooting
- Notes
- Preliminary Inspection
- Symptom Diagnosis
- Notes
- Engine Does Not Start
- Vehicle Will Not Move Forward
- Vehicle Will Not Move Backward
- Vehicle Will Not Move Forward Or Backward
- Engine Stalls When Transmission Is Shifted From Neutral To Drive Or Neutral To Reverse
- Harsh Shift When Transmission Is Shifted From Neutral To Drive, & Excessive Delay
- Harsh Shift When Transmission Is Shifted From Neutral To Reverse & Excessive Delay
- Harsh Shifts When Transmission Is Shifted From Neutral To Drive & Neutral To Reverse, & Excessive Delay
- Harsh Or Slipping Shifts
- All Shift Points Early Or Late
- Some Shift Points Early Or Late
- Vehicle Will Not Shift While Driving Vehicle (No DTCs)
- Poor Acceleration
- Abnormal Vibration While Driving Vehicle In High Gear Or When Accelerating
- Vehicle Shifts Differently When A/C Is Engaged
- Vehicle Will Not Downshift With Cruise Control Engaged
- Clutch & Brake Applications
- Performance Tests
- Road Test
- Shift Speed Specifications
- Stall Speed Test
- Hydraulic Pressure Tests
- Notes
- All Pressures High
- All Pressures Low
- Abnormal Pressure In Reverse Only
- Abnormal Pressure In 3rd Or 4th Only
- Abnormal Underdrive Clutch Pressure Only
- Abnormal Reverse Clutch Pressure Only
- Abnormal Overdrive Clutch Pressure Only
- Abnormal Direct Clutch Pressure Only (5-Speed)
- Abnormal Low-Reverse Brake Pressure Only
- Abnormal 2nd Brake Pressure Only
- Abnormal Reduction Brake Pressure Only
- Abnormal Torque Converter Pressure Only
- Pressure Applied To Element Which Should Not Receive Pressure
- Hydraulic Pressure Adjustments
- Clutch & Servo Air Checks
- Self-Diagnostic System
- Diagnostic Tests
- DTC 11: Throttle Position Sensor Circuit - Shorted
- DTC 12: Throttle Position Sensor Circuit - Open
- DTC 14: Throttle Position Sensor - Adjustment
- DTC 15 (P0713): Transmission Fluid Temperature Sensor Circuit - Open
- DTC 16 (P0712): Transmission Fluid Temperature Sensor Circuit - Shorted
- DTC 21: Crankshaft Position Sensor Circuit - Open
- DTC 22 (P0715): Input Shaft Speed Sensor Circuit - Open/Shorted
- DTC 23 (P0720): Output Shaft Speed Sensor Circuit - Open/Shorted
- DTC 26: Stoplight Switch Circuit - Open/Shorted
- DTC 27 (P0705): Park/Neutral Position Switch Circuit - Open
- DTC 28 (P0705): Park/Neutral Position Switch Circuit - Short
- DTC 29: Vehicle Speed Sensor Circuit - Open/Shorted
- DTC 31 (P0753): Low-Reverse Solenoid Valve Circuit - Open/Shorted
- DTC 32 (P0758): UNDERDRIVE Solenoid Valve Circuit - Open/Shorted
- DTC 33 (P0763): Second Solenoid Valve Circuit - Open/Shorted
- DTC 34 (P0768): Overdrive Solenoid Valve Circuit - Open/Shorted
- DTC 35 (P0773): Reduction Solenoid Valve Circuit - Open/Shorted
- DTC 36 (P0743): Torque Converter Clutch Circuit - Open/Shorted
- DTC 41 (P0731): 1ST Gear Ratio Incorrect
- DTC 42 (P0732): 2ND Gear Ratio Incorrect
- DTC 43 (P0733): 3RD Gear Ratio Incorrect
- DTC 44 (P0734): 4TH Gear Ratio Incorrect
- DTC 45 (P0735): 5TH Gear Ratio Incorrect
- DTC 46 (P0736): Reverse Gear Ratio Incorrect
- DTC 52 (P0741): Torque Converter Clutch Solenoid - Defective
- DTC 53 (P0742): Torque Converter Clutch Solenoid - Stuck On
- DTC 54 (P1751): A/T Control Relay Circuit Open/Shorted To Ground
- DTC 56: "N" Range Indicator Circuit
- Symptom Tests
- Notes
- Test A: Vehicle Does Not Move
- Test B: Vehicle Does Not Move Forward
- Test C: Vehicle Does Not Move In Reverse
- Test D: Vehicle Does Not Move Forward Or Reverse
- Test E: Engine Stalls When Shifting From Neutral To Drive Or From Neutral To Reverse
- Test F: Shock Or Lag Time When Shifting From Neutral To Drive
- Test G: Shock Or Lag Time When Shifting From Neutral To Reverse
- Test H: Shock Or Lag Time When Shifting From Neutral To Drive & From Neutral To Reverse
- Test I: Shift Shock & Slipping
- Test J: Incorrect Shift Points (All Gears)
- Test K: Incorrect Shift Points (Some Gears)
- Test L: Transmission Does Not Shift (No DTCS)
- Test M: Poor Acceleration
- Test N: Vibration
- Test O: Vehicle Shifts Differently With A/C Engaged
- Test P: Transmission Will Not Downshift Under Load With Auto-Cruise Engaged
- Circuit Tests
- Component Tests
- Removal & Installation
- Connector Identification
- Pin Voltage Tests
- Wiring Diagrams