Check HV Water Pump Operation

WARNING: This page is about a different car, the 2002 Toyota Prius. However, it is still accessible from the selected car via links, so may be relevant.

Apply battery voltage to the HV water pump setting terminal 1 as negative pole and terminal 2 as positive and check that the pump operates.

CAUTION:

Pay special attention to the poles and never make a mistake.
This check should be done for a short time (10 second or less).

Fig 1: Identifying Hybrid Vehicle (Heater) Water Pump Terminals
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