Coolant leaking

Good evening,

Most likely the leaking water pump sent water to the belt and it slipped and came off.

https://www.2carpros.com/articles/water-pump-replacement

Either that or the pulley was worn out and wobbling causing the belt to come off.

https://www.2carpros.com/articles/replace-serpentine-belt

Roy

DRIVE BELT

COMPONENTS
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REMOVAL
1. REMOVE FRONT WHEEL RH
2. REMOVE ENGINE UNDER COVER RH
3. REMOVE FRONT FENDER APRON SEAL RH

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4. REMOVE V-RIBBED BELT
(a) Using SST and 19 mm socket wrench, loosen the V-ribbed belt tensioner arm clockwise, then remove the V-ribbed belt.
SST 09216-42010

NOTICE:
Be sure to connect SST and the tools so that they are in line during use.
When retracting the tensioner, turn it clockwise slowly for 3 seconds or more. Do not apply force rapidly.
After the tensioner is fully retracted, do not apply force any more than necessary.

INSPECTION

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1. INSPECT V-RIBBED BELT
(a) Visually check the V-ribbed belt for excessive wear, frayed cords, etc. If any defect has been found, replace the V-ribbed belt.

HINT:
Cracks on the rib side of a belt are considered acceptable. If the belt has chunks missing from the ribs, it should be replaced.
A "new belt" is a belt which has been used for less than 5 minutes with the engine running.
A "used belt" is a belt which has been used for 5 minutes or more with the engine running.

Removal

1. Disconnect cable from negative battery terminal
2. Remove front wheel opening extension pad rh
3. Remove front wheel opening extension pad lh
4. Remove engine under cover rh
5. Remove engine under cover lh
6. Drain engine coolant
7. Remove front fender apron seal rh
8. Remove no. 2 engine mounting stay rh
9. Remove engine moving control rod sub-assembly
10. Remove no. 2 engine mounting bracket rh
11. Remove v-ribbed belt
12. Remove generator assembly

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13. REMOVE WATER PUMP PULLEY
(a) Using SST, remove the 4 bolts and water pump pulley.
SST 09960-10010 (09962-01000, 09963-00700)

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14. REMOVE WATER PUMP ASSEMBLY
(a) Remove the clamp of the crankshaft position sensor from the water pump.
(b) Disconnect the wire of the crankshaft position sensor from the clamp bracket.

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(c) Remove the 4 bolts, 2 nuts and clamp bracket.

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(d) Using a screwdriver, pry between the water pump and cylinder block, and then remove the water pump.

HINT: Tape the screwdriver tip before use.

NOTICE: Be careful not to damage the contact surfaces of the water pump and cylinder block.

INSPECTION

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1. INSPECT WATER PUMP ASSEMBLY
(a) Visually check the drain hole and air hole for coolant leakage.
If leakage is found, replace the water pump assembly.

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(b) Turn the pulley, and then check that the water pump bearing moves smoothly without making a "click" sound.
If it does not move smoothly, replace the water pump assembly.

Yes, to all but I would also replace the thermostat and flush the system.

https://www.2carpros.com/articles/replace-thermostat

https://www.2carpros.com/articles/coolant-flush-and-refill-all-cars

Roy

THERMOSTAT

COMPONENTS
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Removal
1. Remove front wheel opening extension pad lh
2. Remove front wheel opening extension pad rh
3. Remove engine under cover lh
4. Remove engine under cover rh
5. Drain engine coolant
6. Disconnect radiator hose outlet

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7. REMOVE WATER INLET
(a) Remove the 2 nuts and disconnect the water inlet from the cylinder block.
8. REMOVE THERMOSTAT
(a) Remove the gasket from the thermostat.

INSPECTION

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1. INSPECT THERMOSTAT
(a) The valve opening temperature is inscribed on the thermostat.

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(b) Immerse the thermostat in water, and then gradually heat the water.
(c) Check the valve opening temperature of the thermostat.
Standard valve opening temperature: 80 to 84°C (176 to 183°F)
If the valve opening temperature is not as specified, replace the thermostat.

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(d) Check the valve lift.
Standard valve lift: 10 mm (0.39 inch) or more at 95°C (203°F)
If the valve lift is not as specified, replace the thermostat.
(e) Check that the valve is fully closed when the thermostat is at low temperatures (below 77°C (171°F)).
If it is not fully closed, replace the thermostat.

Okay, since that is another issue not related to the first issue, please open a new question and we will be glad to help.

For your convenience here is the link: https://www.2carpros.com/questions/new

Roy