Chevrolet Sonic Repair Manual: Cooling Fan Description and Operation (LWE, LUW)
System Overview
The engine cooling fan system is composed of one cooling fan, 2 relays, the engine control module (ECM), and the associated wiring. The cooling fan assembly includes 1 resistor mounted in the cooling fan shroud. The cooling fan resistor may be a stand alone component, or a part of the cooling fan motor and harness assembly. This combination of components enables the ECM to operate the cooling fan at 2 speeds using two fan control circuits. The ECM will operate the cooling fan at either Low or High speed based on the cooling requirements.
Low Speed Operation
The ECM applies ground at the FAN 1 control circuit for the coil side of the low speed cooling fan relay. The energized low speed relay switch closes to supply B+ through the cooling fan resistor, to the engine cooling fan motor. The result is cooling fan operation at a reduced speed.
High Speed Operation
The ECM applies ground at the FAN 2 control circuit for the coil side of the cooling fan high speed relay. The energized high speed relay switch closes to supply B+ directly to the engine cooling fan motor, by-passing the cooling fan resistor. The result is cooling fan operation at full speed.
Cooling Fan Description and Operation (LUV)
The engine cooling fan system is composed of one cooling fan, a series of 5 relays,
the engine control module (ECM), and the associated wiring. The cooling fan assembly
includes two resistor ...
Engine Coolant Fan Shroud Replacement (LDE LUW)
Engine Coolant Fan Shroud Replacement
Callout
Component Name
Preliminary Procedure
Remove the radiator surge tank. Refer to Radiato ...
Other materials:
Body Panel Paint Protector Replacement (VGC)
The paint protective film and vehicle surface temperature should be 13?€“32?°C
(55?€“90?°F) for best results.
Automatic car washes should be avoided for at least 24?€‰hours after the
paint protective film application.
Wipe the vehicle surface with isopropyl alcohol or fl ...
Oil Level Indicator Tube Replacement
Removal Procedure
Note: If the engine oil level is at maximum, some oil may
emerge when drawing out the oil dipstick guide tube.
Place collecting basin underneath.
Remove the oil level indicator tube bolt (1).
Remove the oil level indicator tubeR ...
How to enable/disable the I-DA system
Vehicle information display
Steering-wheel-mounted control (right side)
To enable or disable the Intelligent Driver Alertness system in the Nissan Armada,
follow these steps:
1. Press the
button until "Settings" appears in the vehicle information display, then confirm
...
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