Wiring Diagram Kelistrikan AC Mobil Toyota Avanza #kelistrikanmobil

Summary

In this video, the presenter explains the air conditioning (AC) system diagram of the Toyota Avanza, focusing on key components such as fuses, relays, and blower motors. The discussion covers how power flows through the system, detailing the functionality of the blower switch and resistor, and the operation of the heater relay. The presenter highlights the role of refrigerant pressure switches and the electronic control module (ECM) in regulating the AC system. The tutorial aims to enhance understanding of automotive AC systems, inviting viewers to request further diagrams and topics.

Takeaways

• 🔌 The AC system in the Toyota Avanza operates using a 40 AMP fuse to supply power to various components, including the blower motor.
• 🌬️ The blower motor has four speed settings, controlled by a switch that adjusts the voltage through different resistors.
• ⚙️ At speed 1, the blower passes through three resistors; at speed 2, two resistors; at speed 3, one resistor; and at speed 4, it bypasses all resistors for maximum speed.
• 💡 The heater relay, powered by a 10 AMP fuse, ensures the blower operates even when the AC is off, connecting the blower to the electrical system.
• 🔄 The rear blower operates similarly to the front blower, with high, middle, and low speed settings controlled by resistors.
• 🔧 A separate 7.5 AMP fuse controls the magnetic clutch relay, which engages the AC system when activated.
• 🛑 The ECM monitors refrigerant levels through pressure switches to prevent damage when refrigerant is low or absent.
• 📊 The ECM adjusts the operation of the magnetic clutch based on temperature readings from a thermistor, ensuring efficient cooling.
• 🕹️ The AC volume switch allows the driver to set the desired level of cooling, influencing the system's operation based on preferences.
• ✅ Understanding the wiring and operation of the AC system helps diagnose issues and ensures proper functionality in the Toyota Avanza.

Q & A

What is the function of the 40 AMP fuse in the AC system?

The 40 AMP fuse provides power to the blower motor, enabling it to operate within the AC system.

How does the blower motor control its speed?

The blower motor speed is controlled by a switch that determines which resistors are used in the circuit. Depending on the position of the switch (1, 2, 3, or 4), different resistors are engaged to vary the speed.

What happens when the blower switch is set to position 4?

In position 4, the blower motor bypasses the resistors, allowing it to operate at maximum speed by connecting directly to the mass.

How does the heater relay function in the AC system?

The heater relay is activated by a 10 AMP fuse and connects the blower motor to the system, allowing it to operate regardless of whether the AC is turned on or off.

What role does the magnetic clutch play in the AC system?

The magnetic clutch engages when the relay is activated, allowing the AC compressor to function and circulate refrigerant through the system.

How is refrigerant pressure monitored in the AC system?

Refrigerant pressure is monitored by pressure switches that determine if the system is functioning correctly. If the refrigerant is too low, these switches will prevent the system from operating.

What happens if the AC system detects a refrigerant leak?

If there is a refrigerant leak, the pressure switches will turn off, preventing the AC system from running to avoid damage.

How does the ECM contribute to the operation of the AC system?

The ECM (Engine Control Module) receives data from various sensors to manage the operation of the AC system, including controlling the magnetic clutch based on temperature and refrigerant levels.

What are the different positions available for the blower switch?

The blower switch has four positions: low, medium, high, and maximum. Each position adjusts the blower speed by engaging different resistors.

How does the temperature sensor affect the AC system's operation?

The temperature sensor informs the ECM about the cooling performance, allowing it to activate or deactivate the magnetic clutch to maintain the desired cabin temperature.