Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSACURA20043.5RLREPAIR AND DIAGNOSISTRANSMISSIONAUTOMATIC TRANSAUTOMATIC TRANSMISSION DIAGNOSIS - M5DA
2004 Acura 3.5RL
Automatic Transmission Diagnosis - M5DA
2004 Acura 3.5RLSECTION Automatic Transmission Diagnosis - M5DA
- Application
- Identification
- Description & Operation
- Component Locations
- Trouble Shooting
- Notes
- Preliminary Inspection
- Symptom Diagnosis
- Notes
- Vehicle Will Not Move In Any Gear
- Vehicle Moves In "2", Will Not Move In "D4" Or "D3"
- Vehicle Moves In "D4" & "D3", Will Not Move In "2"
- Vehicle Moves In "D4", "D3", "2" & "1", Will Not Move In "R"
- Poor Acceleration Or Flares On Start Off
- Engine Idle Vibration
- No Shift
- Fails To Shift In "D3" From 1st To 3rd Gear
- Fails To Shift In "D4" From 1st To 4th Gear
- Erratic Upshifts
- Harsh 1-2 Upshift
- Harsh 2-3 Upshift
- Harsh 3-4 Upshift
- Harsh 2-1 Downshift
- Harsh 3-2 Downshift
- Harsh 4-3 Downshift
- Flare On 3-4 Upshift
- Excessive Shock On 2-3 Upshift
- Excessive Shock On 3-4 Upshift
- Vehicle Moves In Neutral
- Late Shift From "N" to "D4" or "D3"
- Late Shift From "N" to "R"
- Noise From Transaxle In All Gearshift Lever Positions
- Vehicle Will Not Accelerate More Than 31 MPH
- Vibration In All Gearshift Lever Positions
- Gearshift Lever Does Not Operate Smoothly
- Stuck In 4th Gear
- Will Not Shift To "P" Position
- Stall Speed High (All Clutch Pressures Okay)
- Lock-Up Clutch Does Not Disengage
- Lock-Up Clutch Does Not Operate Smoothly
- Lock-Up Clutch Does Not Engage
- Vehicle Moves In "D4" "D3" & "2", Will Not Move In "1"
- No Engine Braking In "1"
- No Engine Braking In "2"
- Shift Position Indicator Does Not Indicate Any Position
- Clutch Application
- Performance Tests
- Self-Diagnostic System
- Diagnostic Tests
- DTC P0715/15: MAINSHAFT Speed Sensor
- DTC P0720/9: Countershaft Speed Sensor
- DTC P0730/41: "D4" Shift Control System
- DTC P0740/40: Lock-Up Control System
- DTC P0753/7: Shift Control Solenoid Valve "A"
- DTC P0758/8: Shift Control Solenoid Valve "B"
- DTC P1705/5: A/T Gear Position Switch (Shorted)
- DTC P1706/6: A/T Gear Position Switch (Open)
- DTC P1753/1: Lock-Up Control Solenoid Valve "A"
- DTC P1758/2: Lock-Up Control Solenoid Valve "B"
- DTC P1768/16: Linear Solenoid
- DTC P1791/4: Vehicle Speed Sensor
- System Tests
- Symptom Tests
- Component Tests
- Removal & Installation
- Torque Specifications
- Connector Identification
- Pin Voltage Tests
- Wiring Diagrams
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.