Toyota Camry Hybrid AHV40 Manual page 153

CH-52
5) Steering Angle Sensor
D The steering angle sensor detects the
steering direction and angle, and sends this
signal to the skid control ECU.
D The sensor contains two gears for detecting
the rotational movement. The magnetic
field of the MRE (Magnetic Resistance
Element), which is built into these gears,
changes as the gears rotate. The change in
the magnetic field causes the resistance of
the sensor to change, which is detected by
the skid control ECU in the form of the
rotational angle of the steering.
6) Power Source Backup Unit
D The power source backup unit is used as an auxiliary power source, in order to supply power to the
brake system in a stable manner.
D This unit contains 12 capacitor cells, which store an electrical charge provided by the (12 V) vehicle
power supply. When the voltage of the (12 V) vehicle power supply drops, the electrical charge stored
in the capacitor cells is used as an auxiliary power supply to the brake system.
Capacitor Cell
Service Tip
Immediately after the power switch is turned OFF, this unit is in the discharging state, and some
voltage remains in the capacitors. Therefore, make sure to check for residual voltage and
discharge it if necessary, before removing the power source backup unit from the vehicle or
opening and inspecting the inside of the power source backup unit case.
For details, refer to the 2007 Camry Hybrid Vehicle Repair Manual (Pub. No. RM02H0U).
CHASSIS - BRAKE
Control Board
Capacitor Cell
02HCH20TE
02HCH19Y