
BODY ELECTRICAL - AIR CONDITIONING
277BE42
From Engine
To Heater
0140BE235C
LH Side
RH Side
Sensor Portion
Internal circuit of the solar sensor
Photo Diode
Frequency
Convert Circuit
Amplifier
Circuit (LH)
Amplifier
Circuit (RH)
To Main Body ECU
To A / C ECU
BE-54
5. Electric Water Pump
The ’07 Camry Hybrid model uses an electric water pump for air conditioning. This provides a stable
heater performance even if the engine is stopped because of a function of the THS-II.
The ’07 Camry Hybrid model uses a new type of electrical water pump in which the water flow resistance
has been reduced.
6. A/C Pressure Sensor
A / C pressure sensor detects the refrigerant pressure and outputs it to the A / C ECU in the form of voltage
changes.
7. Room Temp. Sensor and Outside Temp. Sensor
The room temp. sensor detects the room temperature based on changes in the resistance of its built-in
thermistor and sends a signal to the A / C ECU.
The outside temp. sensor detects the outside temperature based on changes in the resistance of its built-in
thermistor and sends a signal to the A / C ECU.
8. Solar Sensor
The solar sensor consists of a photo diode, two amplifier circuits for the solar sensor, and a frequency
converter circuit for the light control sensor.
A solar sensor detects (in the form of changes in the current that flows through the built-in photo diode)
the changes in the amount of sunlight from the LH and RH sides (2 directions) and outputs these sunlight
strength signals to the A / C ECU.