Chevrolet Sonic Repair Manual: Hood Ajar Indicator Description and Operation
- Hood Ajar Switch
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The body control module (BCM) applies B+ to the hood ajar signal circuit and monitors the voltage to determine the position of the hood. When the hood is closed, the switch is open and voltage remains high. When the hood is open, the switch is closed and the voltage is pulled low.
The BCM uses the hood ajar switch as a content theft deterrent alarm trigger.
- Hood Ajar Indicator/Message
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When the hood is ajar, a message is displayed on the DIC or the hood ajar indicator will be illuminated.
Storage
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Indicator/Warning Message Description and Operation
Indicator LIGHT ON
Refer to the owner's manual for the descriptions and explanations of all
indicator lights.
For diagnosis and repair information related to an indicator light, ref ...
Other materials:
Engine Heater
The engine heater can provide easier starting and better fuel economy during
engine warm-up in cold weather conditions at or below −18°C (0°F). Vehicles with
an engine heater should be plugged in at least four hours before starting.
1. Turn off the engine.
2. Open the hood and unwrap ...
Vehicle Personalization
Personalization Menu (Radio without Touchscreen)
Use the audio system controls to access the personalization menus for customizing
vehicle features.
The following are all possible personalization features. Depending on the
vehicle, some may not be available.
CONFIG (Configur ...
Transmission Fluid Cooler Flushing and Flow Test
GM studies indicate that plugged or restricted transmission oil coolers and pipes
cause insufficient transmission lubrication and elevated operating temperatures
which can lead to premature transmission failure. Many repeat repair cases could
have been prevented by following published procedur ...
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