Toyota Prius 2010 Repair Manual page 175

(e) Measure the waveform between terminal L17-23 (BLW) of the A/C amplifier and body ground.
Tool setting
Vehicle condition
OK:
Waveform is as shown in the illustration.
HINT:
The waveform varies with the blower speed.
Text in Illustration
Component with harness connected
*1
(A/C Amplifier)
NG
REPLACE A/C AMPLIFIER
OK
REPLACE BLOWER MOTOR
7. INSPECT SOLAR VENTILATION RELAY
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
3 - 5
3 - 4
3 - 5
2010 Toyota Prius
Item
(a) Remove the solar ventilation relay from the relay block No. 2-1.
10 kΩ or higher
Below 1 Ω
Below 1 Ω
(when battery voltage is applied to terminals 1 and 2)
1 V/DIV., 500 μs/DIV.
Power switch on (IG)
Blower set to LO
Specified Condition
Content
Repair Manual