Home/Acura/MDX/Acura MDX II (2006-2010)/Repair manual/Rear Differential/SH-AWD Control Unit Initialization

Contents

Wiring diagrams Section: Rear Differential

General 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

Updating the SH-AWD Control Unit

SH-AWD Differential Clutch Torque Memorization

Yaw Rate-Lateral/Longitudinal Acceleration Neutral Position Memorization

SH-AWD Control Unit Initialization

DTC Troubleshooting Index

Symptom Troubleshooting Index

Outline

Operation

Control System

Driving Force Control

Construction

Search Coil Detection System

SH-AWD Control Unit Inputs and Outputs

DTC 12-1,12-2,12-3: Lateral Acceleration Sensor Malfunction

DTC 15-1: Longitudinal 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/Longitudinal 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 Circuit 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 77-1: The Functional Abnormalities of Fuel Emission

DTC 77-2: The Functional Abnormalities Of VSA Modulator-Control Unit

77-4: The Functional Abnormalities Of Automatic-Transmission

DTC 77-5: Yaw Rate-Lateral/Longitudinal 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 Malfunction

DTC 82-1: Right Search Coil Sensor Malfunction

DTC 91-1: SH-AWD Control Unit Programming Error

The SH-AWD indicator does not go off, and no DTCs are stored

The SH-AWD indicator does not come on

SH-AWD Function Test

Direct Electromagnetic Clutch Test

SH-AWD Control Unit Replacement

Center Case Oil Seal Replacement

Side Case Oil Seal Replacement

All sections

SH-AWD Control Unit Initialization Acura MDX II

Rear Differential 1 illustration

SH-AWD Control Unit Initialization

Whenever the SH-AWD control unit is replaced, it must initialized.

Scheme 8

Scheme 8: SH-AWD Control Unit Initialization

Scheme 8: SH-AWD Control Unit Initialization

With the ignition switch to LOCK (0), connect the HDS to the 16P DLC (A) behind the driver's dashboard lower cover.
Turn the ignition switch to ON (II), go to the miscellaneous test menu/neutral menu/all sensor and follow the prompts on the HDS screen. NOTE: See the HDS help menu for specific instructions.