Toyota Prius 2010 Repair Manual page 374

Tester
Display
ovr
HINT:
If the Data List items related to the solar ventilation system are not displayed, the following conditions are
suspected:
The voltage generated by the moon roof glass assembly (solar panel) is less than 7 V
There is a communication error between the solar ventilation ECU and A/C amplifier
(b) Operation Check
(1) Check that the Solar Voltage value in the Data List is 10 V or higher.
(2) Turn the solar ventilation switch on.
(3) Turn the power switch off.
(4) Check that the blower motor operates 10 minutes after the power switch is turned off.
HINT:
The inlets will be changed to fresh air mode and the outlets will be changed to face mode approximately 1
minute after the power switch is turned off.
Inlet and outlet modes will remain unchanged when the solar ventilation switch is turned on after the power
switch is turned off.
When the moon roof glass assembly (solar panel) is generating high voltage, a noise may occur when the blower
motor starts operating. This noise does not indicate a malfunction.
For details of the solar ventilation system control, refer to System Description
2. TEST MODE
HINT:
In test mode, the solar ventilation ECU operates the blower motor while the power switch is on (IG). The state
of the solar ventilation switch received by the solar ventilation ECU and the status of duty output from the solar
ventilation ECU to the blower motor can be checked.
(a) Test Mode Procedure
HINT:
Perform the operation according to the following procedure with the power switch on (IG) and the solar
ventilation switch off.
(1) Check that the Solar Voltage value in the Data List is 10 V or higher.
2010 Toyota Prius
Measurement Item/Range
Normal
Diagnostic Note
Condition
.
.
.
Repair Manual