170
VEHICLE DIAGNOSIS
Electronic Power Steering (EPS) Fault Diagnosis and Solution
Steering without
assiance
1. Wire connectors have bad contact or are
disconnected
2. The fuse blew out
3. Relay damage
4. The controller, motor, or sensor is damaged
1. Check whether wire
connectors and pins are
fully inserted
2. Replace the fuse (40A)
3. Contact your dealer
4. Contact your dealer
Power assi doesn’t
weigh the same for left
and right
1. The median output voltage has deviation
2. Controller, motor or sensor is damaged
1. Contact your dealer
2. Contact your dealer
When syem is ‘ON’,
the eering swings to
both sides
1. Motor is mounted backwards
2. Controller or sensor is damaged
1. Contact your dealer
2. Contact your dealer
Steering becomes
heavy
1. Battery has power loss
2. Air pressure of the tires (front) is insucient
3. Motor damage (power reduction)
1. Charge the battery
2. Inate the tires
3. Contact your dealer
Syem has noise 1. Motor damage
2. Gap of lower eering shaft assembly or
mechanical eering assembly is too large
3. Inallation of lower eering shaft assembly or
mechanical eering assembly is loose
1. Contact your dealer
2. Contact your dealer
3. Contact your dealer