Toyota Prius 2010 Repair Manual page 389

(to Solar Ventilation ECU)
Front view of wire harness connector
*2
(to Blower Motor)
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
5. INSPECT SOLAR VENTILATION ECU
(a) Reinstall the solar ventilation relay.
(b) Reconnect the solar ventilation relay connector.
(c) Reconnect the blower motor connector.
(d) Reconnect the solar ventilation ECU connector.
NG
REPLACE BLOWER MOTOR
OK
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE
6. REPLACE BLOWER MOTOR
2010 Toyota Prius
(e) Measure the waveform between terminal L22-5 (BLW) of the solar
ventilation ECU and body ground.
Item
Tool setting 1 V/DIV., 500 μs/DIV.
Power switch off
Vehicle condition
Solar ventilation switch on (blower motor operating)
OK:
Waveform is as shown in the illustration.
HINT:
The waveform varies with the blower speed.
Text in Illustration
Component with harness connected
*1
(Solar Ventilation ECU)
Content
Repair Manual