Toyota Prius 2010 Repair Manual page 198

1. INSPECT AIR CONDITIONING AMPLIFIER
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection
L17-15 (ECOS) - Body ground
L17-15 (ECOS) - Body ground
Text in Illustration
Component with harness connected
*1
(A/C Amplifier)
NG
CHECK HARNESS AND CONNECTOR (ECO MODE SWITCH - BODY GROUND)
OK
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE
2. CHECK HARNESS AND CONNECTOR (ECO MODE SWITCH - BODY GROUND)
2010 Toyota Prius
(a) Remove the A/C amplifier with the connectors still connected.
Power switch on (IG)
ECO MODE switch off (when switch is not pressed)
Power switch on (IG)
ECO MODE switch on (when switch is pressed)
(a) Disconnect the connector from the integration control and panel sub-
assembly (ECO MODE switch).
Condition Specified Condition
11 to 14 V
Below 1 V
Repair Manual