Chevrolet Cobalt Service & Repair Manual: ATC Diagnosis & Testing
Chevrolet Cobalt Service & Repair Manual / Air Conditioning & Heater / Automatic Temperature Control Diagnosis & Testing / ATC Diagnosis & Testing
Accessing Diagnostic Trouble Codes
| Connect suitably programmed scan tool to the Data Link Connector (DLC) and follow manufacturer's instructions. |
Clearing Diagnostic Trouble Codes
| Connect a suitably programmed scan tool to Data Link Connector (DLC) and follow manufacturer's instructions. |
Intermittents
| Most intermittent conditions are caused by faulty electrical connections or wiring. Inspect for the following items: Wiring broken inside the insulation; poor connection between the male and female terminal at a connector; poor terminal to wire connection. Some conditions which fall under this description are poor crimps, poor solder joints, crimping over the wire insulation rather than the wire itself, and corrosion in the wire to terminal contact area. Pierced or damaged insulation can allow moisture to enter the wiring causing corrosion. The conductor can corrode inside the insulation, with little visible evidence. Look for swollen and stiff sections of wire in the suspect circuits. Wiring which has been pinched, cut, or its insulation rubbed through may cause an intermittent open or short as the bare area touches other wiring or parts of the vehicle. |
ATC Component Diagnosis & Testing
For ATC system component testing
refer to "Climate Control Diagnosis & Testing" diagnostic test charts for
all component testing procedures.
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See also:
Chevrolet Cobalt Owners Manual. Speedometer and Odometer
The speedometer shows the speed in both kilometers
per hour (km/h) and miles per hour (mph).
The vehicle's odometer works together with the Driver
Information Center (DIC). Trip A and Trip B can be set
on the odometer. See “Trip Information” under DIC
Operation and Displays.
The vehicle do ...
Chevrolet Cobalt Owners Manual
- In Brief
- Seats and Restraint System
- Features and Controls
- Instrument Panel
- Driving Your Vehicle
- Service and Appearance Care
- Maintenance Schedule
- Customer Assistance Information
Chevrolet Cobalt Service Manual
- Air Bags
- Air Conditioning & Heater
- Body & Frame
- Brakes
- Cooling System
- Driveline
- Electrical
- Electronic Stability Controls
- Engine Service
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