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A/c Compressor Clutch Controls: Other Chevrolet Pickup K3500

A/c Compressor 1 illustration ~107 words

SCAN TESTER

A variety of information is transmitted through Data Link Connector (DLC) terminal "E" or "M", depending on engine. This data is transmitted at a high frequency which requires a Tech 1 scan tester for interpretation. Several scan testers are available for diagnostic work. Scan testers other than Tech 1 scan tester will function and provide information for diagnostic work; however, some flow charts will specify a Tech 1 scan tester. Failure to use a Tech 1 scan tester when specified may result in incorrect diagnosis of a system.

A/C Request Signal Ckt. Diagnostic Schematic 4.3L, 5.0L, 5.7L, 7.4L. Scheme 3

Scheme 3: A/C Request Signal Ckt. Diagnostic Schematic 4.3L, 5.0L, 5.7L, 7.4L
Scheme 3: A/C Request Signal Ckt. Diagnostic Schematic 4.3L, 5.0L, 5.7L, 7.4L

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