Cooling Fan System

2UR-FSE COOLING: COOLING FAN SYSTEM: ON-VEHICLE INSPECTION

ON-VEHICLE INSPECTION

1. INSPECT COOLING FAN SYSTEM
(a) Put the vehicle in the following conditions.
(1) The power switch is OFF.
(2) The engine coolant temperature is less than 92°C (198°F).
(3) The battery voltage is between 11 and 14 V.
(4) The A/C switch is OFF.






(b) Connect the 400 A probe of an ammeter to cooling fan motor harness (M+), and then No. 2 cooling fan motor harness (S+).
(c) Turn the power switch ON (IG) and wait for approximately 10 seconds. Check that the fan stops.
(d) Put the engine in inspection mode Inspection Mode Procedure.
(e) Start the engine. Check that the fan stops with the engine idling.
HINT:
- Make sure that the engine coolant temperature is less than 92°C (198°F).
- Turn the A/C switch OFF.

(f) Check that the fan operates when the A/C switch is turned ON (MAX COOL).
(1) Measure the current according to the value(s) in the table below.
Standard current:





HINT: The engine coolant temperature is less than 92°C (198°F).

(g) Check that the fan operates when the engine coolant temperature sensor connector is disconnected.
(1) Measure the current according to the value(s) in the table below.
Standard current:






(h) After the engine is warmed up, check that the fan operates as shown in the illustration below.
HINT:
- The engine coolant temperature at which the fan starts operating is approximately 94°C (201°F).
- This system can also be checked using the intelligent tester or Techstream.
- Select the following menu items:
Intelligent tester - DIAGNOSIS / ENHANCED OBD II / DATA LIST / PRIMARY / COOLANT TEMP.
Techstream - Powertrain / Engine and ECT / Data List / All Data / Coolant Temp.