STEERING
BX1870,BX2370,BX2670,LA203A,LA243A,RCK48(P),RCK54(P),RCK60B,RCK60D,RCK54D, WSM
4-S1
1. TROUBLESHOOTING
9Y1210855STS0001US0
Symptom Probable Cause Solution
Reference
Page
Cannot Be Steered Steering controller malfunctioning Replace 4-S6
Hard Steering Power steering oil improper (Transmission fluid) Change with specified
oil
G-9
Hydraulic pump malfunctioning Replace 5-S11
Flow priority valve malfunctioning Repair or replace 5-M6
Steering controller malfunctioning Replace 4-S6
Steering Force
Fluctuates
Steering controller malfunctioning Replace 4-S6
Flow priority valve malfunctioning Replace 5-M6
Air sucked in pump due to lack of oil Fill G-32
Air sucked in pump from suction circuit Repair –
Steering Wheel Turns
Spontaneously When
Released
Steering controller malfunctioning Replace 4-S6
Front Wheels Wander
to Right and Left
Steering controller malfunctioning Replace 4-S6
Air sucked in pump due to lack of oil Fill G-32
Air sucked in pump from suction circuit Repair –
Insufficient bleeding Bleed G-40
Cylinder malfunctioning Repair or replace 4-S8
Improper toe-in adjustment Adjust 3-S4
Tire pressure uneven Inflate G-64
Wheels Are Turned to
a Direction Opposite
to Steering Direction
Cylinder piping connected in reverse Repair 4-S6
Steering Wheel Turns
Idle in Manual
Steering
Insufficient bleeding Bleed G-40
Air sucked in due to lack of oil Fill G-32
Noise Air sucked in pump due to lack of oil Fill G-32
Air sucked in pump from suction circuit Repair –
Pipe deformed Replace –
Oil Temperature
Increases Rapidly
Steering controller (relief valve) malfunctioning Replace 4-S6
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