Cooling Fan вђ Toyota Sienna Ce 2003 вђ System Wiring Diagram Fuses look fine. 2. fan motors work fine (connected them directly to power source) 3. replaced the control module (attached to the radiator) 4. checked the temperature switch with ohm meter seems to be fine, resistance changes with temperature changes. jumped the plug that plugs in the temperature switch to rule out the switch, no fans. Thanks guys for the ideas. here is an update: 1) nothing is blocking the fans., they spin freely. 2) the fans do turn on and run at times. (at both low and high speeds) 3) i replaced 6 relays and no change. 4) i replaced the fan control cpu and it looks like the fans are turning on sooner, but not always.
Toyota Radiator Fan Wiring Diagram Wiring Diagram There's also instructions on how to ohm out the relay but this test should tell you if the relay is bad: page 16 5, 1 (b): check that the cooling fan operates when turning the ignition switch on with disconnecting the engine coolant temperature sensor connector. the ect is on top of the engine, near the engine coolant cap. '04 xle l 2wd, no nav. The overall circuit for fans is relatively simple. battery power goes to the main 140 amp alternator fuse, and from there to the 50amp fan fuse. that output goes right to the fan relay. the relay might have markings on it to tell you which is the control circuit (the energizer coil), and which is the switched feed to the cooling fan ecu. When i start my 2001 sienna ce, and i have the a c switched on, both radiator fans operate. but once the car heats up, they both stop despite the a c button being activated. i have replaced both fan relays, but niether has fixed the problem. where do i look next?. 2001toyota sienna overall electrical wiring diagram download. toyota sienna repair manual, as well as operation and maintenance manual, device for front wheel drive and all wheel drive toyota sienna 2003 2006. release equipped with 3mz fe gasoline engines with a working volume of 3.3 liters.
Inspect No Cooling Fan Relay Toyota Sienna 1997 2003 Repair When i start my 2001 sienna ce, and i have the a c switched on, both radiator fans operate. but once the car heats up, they both stop despite the a c button being activated. i have replaced both fan relays, but niether has fixed the problem. where do i look next?. 2001toyota sienna overall electrical wiring diagram download. toyota sienna repair manual, as well as operation and maintenance manual, device for front wheel drive and all wheel drive toyota sienna 2003 2006. release equipped with 3mz fe gasoline engines with a working volume of 3.3 liters. Removed pressure switch and fan shut off. 2. read wiring diagram and operation description and removed both radiator fan relays one at a time, which would shut the fan off. 3. removed coolant temp sensor in the head, fan did not shut off. 4. checked resistance at coolant temp sensor (in case the system was a fail safe system) and it was good. While the vehicle is running, the ecm activates the fan motors via the cooling fan ecu for 3 minutes after the engine has stopped. the engine coolant temperature is a predetermined value or more before the engine stops. the outside temperature is a predetermined value or more before the engine stops. the engine load, which exceeds a.
Toyota Sienna Service Manual Precaution Cooling Fan System 2gr Fe Removed pressure switch and fan shut off. 2. read wiring diagram and operation description and removed both radiator fan relays one at a time, which would shut the fan off. 3. removed coolant temp sensor in the head, fan did not shut off. 4. checked resistance at coolant temp sensor (in case the system was a fail safe system) and it was good. While the vehicle is running, the ecm activates the fan motors via the cooling fan ecu for 3 minutes after the engine has stopped. the engine coolant temperature is a predetermined value or more before the engine stops. the outside temperature is a predetermined value or more before the engine stops. the engine load, which exceeds a.
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