Honda HR-V: EPS System Description - Motion Adaptive-EPS Control
Overview
Motion adaptive-EPS control performs the steering torque correction control coordinated with VSA system for stabilizing the vehicle when the steering is unstable. The EPS system determines the state of the vehicle based on the data calculated by the VSA modulator-control unit, and the data from the yaw rate sensor and the acceleration sensor. When the system determines that the vehicle behavior is abnormal, the EPS control unit calculates the correction current based on the vehicle behavior and corrects the steering torque. The motion adaptive-EPS control is stopped in the event of failure in the VSA system.
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Fig. 2: Motion Adaptive-EPS Control System Diagram
Mitigates Oversteer Control
When oversteer occurs, it compensates for steering torque to steer in the countersteer direction, and enhances vehicle control.
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Mitigates Oversteer Control
When oversteer occurs, it compensates for steering torque to steer in the countersteer direction, and enhances vehicle control.
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Stabilizes Braking on Road Surfaces With Different Friction Coefficients Control
When the vehicle behavior is abnormal while braking on an uneven road surface, it compensates for steering torque to enhance vehicle control.
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EPS System Description - Overview
System Outline
This vehicle is equipped with electrical power steering (EPS). The driver's
steering force is assisted by an
electric motor at the steering column. Compared to a hydraulic assist power
Check
POWER STEERING ASSIST CHECK
Check
1. Power Steering Assist - Check
NOTE: This test should be done with original equipment tires and wheels at
the
correct tire pressure.
Start the engine, and let i
DTC Troubleshooting Index
EPS DTC TROUBLESHOOTING INDEX
TESTING
EPS CONTROL UNIT UPDATE
Special Tools Required
MVCI unit with the latest control module (CM)
update software installed
1. EPS Control Unit - Update
NOTE: Check
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Valve Seat Reconditioning
Reconditioning
1. Valve, Valve Seal, and Valve Spring Seat - Remove
2. Valve Seat - Reconditioning
Inspect valve stem-to-guide clearance. If the valve guides are worn,
replace them before cutting the valve seats.
Renew the valve seats in the cylinder head using a valve seat cutter.
Carefully c
Audio Unit Removal and Installation (Color Audio Type (5-inch Screen)
Removal & Installation
NOTE:
When working on electronic components, make sure the work area is clean
and dust free.
Make sure your hands are clean and free of oils and grease.
Eject the CD before disconnecting the audio unit to prevent damaging the
CD player's load mechanism.
If you are
