Toyota G9020-47031 Drive Motor Inverter Cooler Water Pump

Removal steps: 1. Park on level ground, chock wheels, set parking brake, and allow the engine and cooling system to cool. 2. Disconnect the 12-volt battery negative terminal using insulated tools. 3. Follow the vehicle manufacturer's procedure to isolate the high-voltage hybrid system (remove service/interlock to disable HV) and confirm the system is safe before proceeding. 4. Place a drain pan and drain the cooling system to capture coolant for proper disposal or recycling. 5. Remove or move obstructing components (covers, intake parts, fan shroud, accessory drive components) as required for access - the exact items vary by design. 6. If the pump is belt-driven, relieve the accessory belt tensioner and remove the belt; if the pump is behind a timing/cover, remove that cover per the service manual. 7. Label and disconnect coolant hoses attached to the pump, catching residual coolant. 8. Remove the pump mounting fasteners and any associated brackets, keeping hardware organized for reassembly. 9. Remove the pump from the engine, protecting openings from dirt and inspecting the mounting area and connected components for wear or damage. 10. Clean up spilled coolant and safely store or discard contaminated materials. Installation steps: 1. Clean and dry the pump mounting surface; remove old gasket material without gouging the surface. 2. Install a new pump gasket or seal and position the new or rebuilt pump in place. 3. Hand-start mounting fasteners, then snug progressively and evenly (use a crisscross pattern where applicable); obtain final torque values from the manufacturer or service manual. 4. Reinstall any removed covers, brackets, pulleys, and the accessory or timing belt, setting belt tension per manufacturer procedure and verifying correct routing. 5. Reconnect coolant hoses and replace worn clamps; ensure hose ends are fully seated. 6. Refill the cooling system with the correct type and concentration of coolant specified by the manufacturer. 7. Bleed air from the cooling system following the vehicle manufacturer's bleeding procedure (methods vary - vacuum fill, bleed valves, or run/idle/heat cycle). 8. Reconnect the 12-volt battery negative terminal and restore the hybrid high-voltage system per manufacturer procedure. 9. Start the vehicle per hybrid-safe procedures and run to normal operating temperature while checking for leaks, abnormal noises, and dash warnings. 10. After a cool-down, recheck coolant level, hose connections, and fasteners; top off coolant if necessary. 11. Properly dispose of old coolant and replaced parts in accordance with local regulations. Repair tip: Replace related wearable items (drive belts, tensioner, thermostat, and radiator hoses) while you have good access to reduce duplicated labor and future leaks.