Model Outline
for Technician
Engine
Chassis
Body
Body Electrical
Steering
Diagnosis and Fail-safe
– When the system detects the malfunction, system
enters to fail-safe mode as follows
Fail-safe Operation
Items
• Torque sensor malfunction
• Motor overcurrent
• Motor short (Including drive system malfunction)
• Power steering ECU malfunction
Disables the assist
• Motor overheating
• Power steering ECU internal temperature sensor
malfunction
Limits the assist force
• Vehicle speed signal malfunction
• Engine speed signal malfunction
• Power supply voltage malfunction
Temporary limits
the assist*
*: When the normal conditions are reestablished, it returns to normal controls
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