STEERING
B1830,B2230,B2530,B3030, WSM
7-S1
1. TROUBLESHOOTING
9Y1210003STS0001US0
Symptom Probable Cause Solution
Reference
Page
Cannot Be Steered Steering controller malfunctioning Replace 7-S6
Pipe broken Replace 7-S5
Hard Steering Power steering oil improper Change with specified
oil
G-8
Hydraulic pump malfunctioning Replace 8-S11
Steering controller malfunctioning Replace 7-S6
Oil leak from pipe joint Retighten pipe joint 7-S5
Improper relief valve pressure Check and replace 7-S4,
7-S6
Relief valve malfunctioning Replace power
steering controller
7-S6
Air in the hydraulic pipes Bleed air 7-S4
Steering Force
Fluctuates
Steering controller malfunctioning Replace 7-S6
Air sucked in pump due to lack of oil Replenish G-16
Air sucked in pump from suction circuit Repair –
Steering Wheel Turns
Spontaneously When
Released
Steering controller malfunctioning Replace 7-S6
Front Wheels Wander
to Right and Left
Steering controller malfunctioning Replace 7-S6
Air sucked in pump due to lack of oil Replenish G-16
Air sucked in pump from suction circuit Repair –
Insufficient bleeding Bleed air 7-S4
Cylinder malfunctioning Repair or replace 7-S8
Improper toe-in adjustment Adjust 6-S4
Tire pressure uneven Inflate G-66
Wheels Are Turned to
a Direction Opposite
to Steering Direction
Power steering hoses connected in reverse Repair 7-S4
Steering Wheel Turns
Idle in Manual
Steering
Insufficient bleeding Bleed air 7-S4
Air sucked in due to lack of oil Replenish G-16
Noise Air sucked in pump due to lack of oil Replenish G-16
Air sucked in pump from suction circuit Repair –
Pipe deformed Replace 7-S5
Oil Temperature
Increases Rapidly
Steering controller (relief valve) malfunctioning Replace 7-S6
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