Practice question

A wheelchair lift platform deploys but the lift will not raise; the bus is in drive with the parking brake off. What is the most likely explanation?

The lift interlock is correctly preventing operation because safe conditions (park/neutral and brake set) are not met
The hydraulic pump has failed
The roll-stop is broken
The heater core is clogged

Answer: A — The lift interlock is correctly preventing operation because safe conditions (park/neutral and brake set) are not met

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