4WS Troubleshootina
TROUBLESHOOTING
Before inspecting, check the following items:
l
Ensure that the suspension has not been
fied
l
‘Tire and wheel size, specifications, air pressure,
balance and amount of wear
l
Steering wheel type
l
Wheel alignment
l
Oil pump drive belt tension
l
Power steering fluid level, and air in the system
l
Engine idle speed and even idle
l
Oil leakage
Malfunction symptom
Malfunctioning system
Inspection item
4WS does not operate
Power cylinder
Rear oil pump
Control valve
Tie rod swing torque
Power cylinder slide resistance
Flow volume check
Poor steering feeling
Steering gears and linkage
Rack cracks or deformation
Feeling of friction in steering
Poor steering return
Steering wheel efforts
Control valve
Oil leakage from control valve joint
sive
Power cylinder
Oil leakage from piston rod
Oil line
Pressure hose breakage
Oil reservoir
Oil reservoir deformation or oil leakage
Rear wheels cannot be Control valve
steered
Poor rear wheels return
Power cylinder
Hydraulic pressure for rear
wheel is constantly high
Rear oil pump
Stuck control valve spool
Stuck power cylinder
Relief valve remains open
Excessive power or cylinder friction
Poor rear wheel steering re-
sponse
Poor rear wheel steering
range
Oil leakage from control valve spool
Oil leakage from power cylinder
Extreme oil pump internal wear
Poorsteerability (extreme tire
Power cylinder
Tie rod length improperly adjusted after toe-in
wear)
adjustment
TSB Revision
Содержание 1992 3000GT
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Страница 118: ...13A 14 MULTIPORT FUEL INJECTION Special Tools TSB Revision...
Страница 288: ...13A 184 MULTIPORT On Vehicle Inspection of MFI FUEL INJECTION Comtaonents Camshaft position sen 1TSB Revision...
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Страница 536: ...21 4 CLUTCH Troubleshooting Excessive wear of clutch disc facin I LJ 1 TSB Revision...
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Страница 570: ...22 14 MANUAL TRANSAXLE AWD Special Tools SPECIAL TOOLS Oil seal installer TSB Revision...
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Страница 608: ...23 18 AUTOMATIC TRANSAXLE Troubleshooting Excessive vibration shock during upshift TSB Revision...
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Страница 752: ...33 2 NOTES...
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Страница 809: ...REAR SUSPENSION AWD Special Tools 34 23 B lMB990244 i TSB Revision...
Страница 810: ...34 24 REAR SUSPENSION AWD Troubleshooting TROUBLESHOOTING TSB Revision...
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Страница 964: ...37A 4 STEERING Snecial Tools SPECIAL TOOLS Preload socket General service TSB Revision...
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Страница 1068: ...42 62 BODY Sunroof SUNROOF SWITCH CONTINUITY CHECK 18FO403 TSB Revision...
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Страница 1103: ...52 1 i INTERIOR CONTENTS INTERIOR 52A SUPPLEMENTAL RESTRAINT SYSTEM SRS 528 i...
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