Prius L4-1.8L (2ZR-FXE) Hybrid (2010)
(f) While observing the screen, gently jiggle the connectors or wire harnesses between the ECUs and sensors, or between ECUs.
OK:
Normal display appears.
HINT
If the display changes, this indicates that there has been a momentary interruption (open circuit) in the connector and/or wire
harness. In this case, repair or replace the connectors and/or wire harnesses as one of them is faulty.
Reading and Clearing Diagnostic Trouble Codes