Radiator fan stopped working

You might try the engine coolant temperature switch.

Scan the computer for code/s and see if pops a coolant temperature sensor code-As for the coolant temperature switch there's none just check it.

I have a feeling the relay you replaced wasn't the bad one. There are three different cooling fan relays. If you look at the first three pics attached, I they show each one.

Now, what I suggest is to remove one relay at a time and test it. Here is a link that shows in general how one is checked:

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

Here are the manufacturer's directions for testing all three relays. The attached pics correlate with the directions.

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1999 Toyota Camry CE Sedan L4-2164cc 2.2L DOHC (5S-FE) MFI
Cooling Fan Relay
Vehicle Engine, Cooling and Exhaust Cooling System Radiator Cooling Fan Radiator Cooling Fan Motor Relay Testing and Inspection Component Tests and General Diagnostics Cooling Fan Relay
COOLING FAN RELAY
INSPECTION
1. INSPECT NO.1 COOLING FAN RELAY
a. Remove the relay box cover.

pic 4

b. Remove the No.1 cooling fan relay. (Marking: FAN NO.1)

pic 5

c. Inspect the No.1 cooling fan relay continuity.
1. Using an ohmmeter, check that there is continuity between terminals 1 and 2. If there is no continuity, replace the relay.
2. Check that there is continuity between terminals 3 and 4. If there is no continuity, replace the relay.

pic 6

d. Inspect the No.1 cooling fan relay operation.
1. Apply battery positive voltage across terminals 1 and 2.
2. Using an ohmmeter, check that there is no continuity between terminals 3 and 4. If there is continuity, replace the relay.
e. Reinstall the No.1 cooling fan relay
f. Reinstall the relay box cover.
2. INSPECT NO.2 COOLING FAN RELAY
a. Remove the relay box cover.

pic 7

b. Remove the No.2 cooling fan relay. (Marking: FAN NO.2)

pic 8

c. Inspect the No.2 cooling fan relay continuity.
1. Using an ohmmeter, check that there is continuity between terminals 1 and 2. If there is no continuity, replace the relay.
2. Check that there is continuity between terminals 3 and 4. If there is no continuity, replace the relay.
3. Check that there is no continuity between terminals 3 and 5. If there is continuity, replace the relay.

pic 9

d. Inspect the No.2 cooling fan relay operation.
1. Apply battery positive voltage across terminals 1 and 2.
2. Using an ohmmeter, check that there is no continuity between terminals 3 and 4. If there is continuity, replace the relay.
3. Check that there is continuity between terminals 3 and 5. If there is no continuity, replace the relay.
e. Reinstall the No.2 cooling fan relay.
f. Reinstall the relay box cover.
3. INSPECT NO.3 COOLING FAN RELAY
a. Remove the relay box cover.

pic 10

b. Remove the No.3 cooling fan relay. (Marking: FAN NO.3)

pic 11

c. Inspect the No.3 cooling fan relay continuity.
1. Using an ohmmeter, check that there is continuity between terminals 1 and 2. If there is no continuity, replace the relay.
2. Check that there is no continuity between terminals 3 and 5. If there is continuity, replace the relay.

pic 12

d. Inspect the No.3 cooling fan relay operation.
1. Apply battery positive voltage across terminals 1 and 2.
2. Using an ohmmeter, check that there is continuity between terminals 3 and 5. If there is no continuity, replace the relay.
e. Reinstall the No.3 cooling fan relay.
f. Reinstall the relay box cover.

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Here are a few links you may find helpful when testing:

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

https://www.2carpros.com/articles/how-to-use-a-voltmeter

https://www.2carpros.com/articles/how-to-check-wiring

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Let me know if this helps or if you have other questions.

Take care,
Joe