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 MANUALSACURA2008RDXREPAIR AND DIAGNOSIS (SINGLE PAGE)DRIVELINES & AXLESDIFFERENTIALS & DRIVE AXLESREAR DIFFERENTIAL
2008 Acura RDX
Rear Differential
2008 Acura RDXSECTION Rear Differential
- Special Tools
- Component Location Index
- General Troubleshooting Information
- SH-AWD Indicator
- Diagnostic Trouble Code (DTC)
- Self-diagnosis
- How to Check for Diagnostic Trouble Codes (DTCs)
- How to Troubleshoot Circuits at the SH-AWD Control Unit
- SH-AWD Control Unit Update
- SH-AWD Differential Clutch Torque Memorization
- Yaw Rate-Lateral Acceleration Neutral Position Memorization
- SH-AWD Control Unit Initialization
- DTC Troubleshooting Index
- Symptom Troubleshooting Index
- System Description
- Circuit Diagram
- DTC Troubleshooting
- DTC 12-1,12-2,12-3: Lateral Acceleration Sensor Malfunction
- DTC 16-3: Steering Angle Sensor Neutral Position Incorrect
- DTC 33-2, 33-3: Yaw Rate Sensor Malfunction
- DTC 41-1: F-CAN Malfunction (Lost Communication with Power Control Module (PCM))
- DTC 41-2: F-CAN Malfunction (Lost Communication with VSA)
- DTC 41-4: F-CAN Malfunction (Lost Communication with A/T Control Unit)
- DTC 41-5: F-CAN Malfunction (Lost Communication with Yaw Rate-Lateral Acceleration Sensor)
- DTC 41-6: F-CAN Malfunction (Lost Communication with Steering Angle Sensor)
- DTC 42-1: Differential Fluid Temperature Sensor (Short to Power)
- DTC 42-2: Differential Fluid Temperature Sensor (Open/GND Short)
- DTC 43-1: Differential Fluid Temperature Sensor Malfunction
- DTC 44-11: SH-AWD Control Unit
- DTC 44-12: SH-AWD Relay Stuck ON
- DTC 44-32: SH-AWD Control Unit Power Supply Stuck ON
- DTC 44-41: SH-AWD Control Unit Power Supply Stuck OFF
- DTC 44-50: SH-AWD Control Unit Power Supply Voltage Low
- DTC 49-1: SH-AWD Control Unit (PG Line Open)
- DTC 52-3: Left Clutch Electromagnetic Coil Current Malfunction
- DTC 53-1, 53-3: Left Clutch Electromagnetic Coil Malfunction
- DTC 53-2: Left Clutch Electromagnetic Coil (Short)
- DTC 56-3: Right Clutch Electromagnetic Coil Current Malfunction
- DTC 57-1, 57-3: Right Clutch Electromagnetic Coil Malfunction
- DTC 57-2: Right Clutch Electromagnetic Coil (Short)
- DTC 76-1: Rear Differential Fluid Overheats
- DTC 77-1: Communication Error with the Power Control Module (PCM)
- DTC 77-2: Communication Error with the VSA Modulator-Control Unit
- DTC 77-4: Communication Error with the Automatic-Transmission Control Unit
- DTC 77-5: Yaw Rate-Lateral Acceleration Sensor Malfunction
- DTC 77-6: Steering Angle Sensor Malfunction
- DTC 78-xx ("x" can be 0 thru 9 or A thru F): SH-AWD Control Unit Self-Diagnostic Malfunction
- DTC 81-1: Left Search Coil Sensor (Open or Short)
- DTC 82-1: Right Search Coil Sensor (Open or Short)
- DTC 91-1: SH-AWD Control Unit Programming Error
- Symptom Troubleshooting
- SH-AWD Function Test
- Rear Differential Fluid Inspection and Replacement
- Rear Differential Fluid Temperature Sensor Replacement
- SH-AWD Control Unit Replacement
- SH-AWD Relay Replacement
- Rear Differential Mount Replacement
- Rear Differential Removal
- Rear Differential Installation
- Rear Differential Disassembly/Reassembly
- Center Case Oil Seal Replacement
- Side Case Oil Seal Replacement
- Center Case Replacement
- Side Case Replacement
RENDER: 1.0x
NO RELATED
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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.