On-Vehicle Inspection [12/2015 - 08/2016]: Procedure
WARNING: This page is about a different car, the 2016 Toyota Sienna. However, it is still accessible from the selected car via links, so may be relevant.
- INSPECT COOLING FAN ECU
- Put the vehicle in the following conditions:
- Turn the ignition switch off.
- The coolant temperature is less than 95°C (203°F).
- The battery voltage is between 9 and 14 V.
- The A/C switch is off.
- Clamp the 400 A probe of an ammeter over the M+ wire of each cooling fan motor.
- Turn the ignition switch to ON and wait for approximately 10 seconds. Check that the fan stops.
- Start the engine. Check that the fan is stopped with the engine idling.
HINT:
- Make sure that the radiator engine coolant temperature is less than 95°C (203°F).
- Make sure that the A/C switch is off.
- Check that the fan operates when the A/C switch is turned on (MAX COOL and the magnetic clutch is operating).
Standard Current
Item Specified Condition Cooling fan motor 4 to 20 A No. 2 cooling fan motor 4 to 20 A HINT:
The coolant temperature is less than 95°C (203°F).
- Check that the fan operates when the engine coolant temperature sensor connector is disconnected.
Standard Current
Item Specified Condition Cooling fan motor 4 to 20 A No. 2 cooling fan motor 4 to 20 A - After the engine is warmed up, check that the fan operates as shown in the illustration.TEXT IN ILLUSTRATION
*a Operating Diagram *b A/C OFF *c Fan Speed *d HI *e LO *f OFF HINT:
- The coolant temperature at which the fan starts operating is approximately 97°C (207°F).
- This system can also be checked using the Techstream.
- Enter the following menus: Powertrain / Engine / Data List / Coolant Temp.
- Put the vehicle in the following conditions: