My Toyota Previa 2000 ACR30 (2AZFE) won’t start the coolant fans at 90 C (194 F) when it should. The fans work fine when theyre connected to power. The previous owner had taken the car to the mechanic for this problem, and they put a paperclip in the connector of the coolant fan temp. switch so the fans can stay on the entire time. Surely there has to be a way to not have to keep the fans on all the time, so I’ve tried the following so far:
-Replaced Coolant Fan Temperature Switch (was bad before)
-Tested ECT sensor and connector, they both test fine
-Replaced Thermostat (it was bad before)
-Fan fuses are ok
-All 3 Fan Relays test ok when theyre disconnected and power supplied to them, they are relays 11, 14, 15 in this diagram:
however the sockets for relay 14 and 15 dont power the fans with ignition ON when bridging the 87 and 30 terminals with a paperclip as seen at 5:32 in this video:
Im questioning whether relays 14, 15 are supposed to be a closed circuit and power the fans when you paperclip them like the video, or is the circuit always open until the coolant temp. switch passes 90C?
Also, could it just be that there is damage in the wiring and relays 14+15 aren’t getting any power? Unfortunately I have not been able to find any wiring diagrams so far.
I am at my wits end with this and any insight would be greatly appreciated. Thank you for your time in reading this.
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