11 Questions
What are the steps involved in the diagnostic procedure for vehicle issues?
Verifying customer concern, visual inspection, checking for stored DTCs, and road testing
What is the purpose of the engine cooling system?
To bring the ICE up to optimum temperature and maintain it for efficiency and longevity
What is a thermostat?
A temperature-controlled valve that aids in uniform engine warm-up
What is an electronic thermostat?
A thermostat that allows for closer control of engine temperature
What methods can be used to identify cooling system faults?
Visual inspection and pressure testing
What is coolant dye leak testing?
A method that is effective in identifying coolant leaks
What technology do some hybrids use to warm engines and catalytic converters?
Heat capture technology
What does the RAV4 Prime PHEV use to reduce emissions at an earlier stage?
Warm Up Control
How much coolant is stored in the coolant heat storage tank?
Approximately 3 liters
How many modes of operation does the coolant heat storage system have?
Four
What can a fluctuating MAP sensor value indicate?
A fault that needs further investigation
Study Notes
- Diagnostic procedure for vehicle issues includes verifying customer concern, visual inspection, checking for stored DTCs, and road testing.
- Engine cooling system brings the ICE up to optimum temperature and maintains it for efficiency and longevity.
- Thermostat is a temperature-controlled valve that aids in uniform engine warm-up.
- Electronic thermostat allows for closer control of engine temperature.
- Visual inspection and pressure testing can identify cooling system faults.
- Coolant dye leak testing is effective in identifying coolant leaks.
- Some hybrids use heat capture technology to warm engines and catalytic converters.
- RAV4 Prime PHEV uses Warm Up Control to reduce emissions at an earlier stage.
- Coolant heat storage system stores heated coolant to warm engine intake ports prior to cold start.
- Approximately 3 liters of coolant is stored in the coolant heat storage tank.
- The coolant heat storage system has four modes of operation.
- Active grille shutters (AGS) are designed to decrease aerodynamic drag.
- Service mode, maintenance mode, and inspection mode can bypass the idle-stop feature.
- Hybrid vehicles do not use a starter motor, but rather use the electric motor attached to the crankshaft.
- Compression test on a HEV involves removing all spark plugs and using a factory-level scan tool.
- Cylinder leakage test helps determine the condition of the engine.
- Injecting air under pressure into the cylinders one at a time can help determine engine condition.
- MAP sensor value can help determine engine condition.
- High and steady MAP values indicate sound engine condition.
- Fluctuating MAP sensor value indicates a fault that needs further investigation.
Are you interested in learning more about diagnostic procedures and engine cooling systems for vehicles? Test your knowledge with our quiz! From visual inspections to coolant heat storage, this quiz covers important topics that every vehicle enthusiast should know. Use your knowledge of keywords such as thermostats, hybrid technology, and MAP sensors to ace this quiz and impress your friends with your newfound automotive expertise.
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