Cut blue/purple wires in Interior over Passenger Side Rear Wheel Well

I’d score crimp connectors, crimp tool, corrugated plastic conduit sheath and electrical tape, repair the breaks. An automobile specialty store should have all that, or somewhere like The Source (electical supply store).

 

Sorry, no clue as to their function. Do keep all the exposed wire tips protected, isolated from each other and the car body, in the interim.

 

A photo from a wider angle would be helpful to confirm, but after a glance through the Electrical Wiring Diagram (more info), I think the blue and violet wires go to connector M93, for the purge flow switching valve (also called the fuel vapor containment valve or fuel tank solenoid main valve assembly), part of the evaporative emission control (EVAP) system.

If that is, in fact, what the wires are for, then the car can be driven, but the Check Engine warning light (malfunction indicator lamp) may come on, with diagnostic trouble codes P24507E (P2450), Evaporative Emission System Switching Valve Actuator Stuck On, or P24517F (P2451), Evaporative Emission System Switching Valve Actuator Stuck Off.

For repair procedures, see Toyota’s Wire Harness Repair Manual (PDF), starting with step 3 on page B-30 (47) or this old Toyota video (from 16:26 to 17:37). Even though the wiring is in the interior, because of the risk of spilled liquid cargo, I’d suggest using self-fusing silicone tape over the splices.

 

If that interpretation is correct (and the post comes from a well informed source!) and the check engine light comes on, after you repair the wires to restore continuity, the light should go out again after a few drive cycles.

 

I think it’d be beyond their mandate, to protect the interior from determined dogs; maybe need carrying cages?