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Home >> Chevrolet >> 1982 >> S10 Pickup 2.8L Eng VIN B, Automatic Trans >> Repair and Diagnosis >> Engine Mechanical >> Auxiliary Emission Control Systems >> Computer Command Control >> Diagnostic Procedure >> Tools Required >> Diagnostic Tools
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Diagnostic Tools

  1. CCC system testing requires a dwell meter, tachometer, test light, ohmmeter, digital voltmeter (with 10 megohm resistance), vacuum pump, vacuum gauge and 6 jumper wires. Jumpers must be 6" long. One wire should have male connectors at both ends, one should have female connectors at both ends, and the others should be male at one end and female at the other.
  2. A test light must be used in place of a voltmeter when specified by the diagnostic chart.
  3. The dwell meter is used to check mixture control solenoid operation. It must be set on 6-cylinder scale and connected to Green connector near carburetor. DO NOT connect any other equipment to this lead. Do not allow lead to contact any ground source, including rubber hoses.
    NOTE: If engine operation changes when dwell meter is connected, remove it and try a different meter. Some models affect system operation.
  4. When engine is at operating temperature and idling, dwell meter needle will fluctuate between 10° and 50°. This indicates "Closed Loop" operation. If the needle does not move, "Open Loop" operation is indicated.
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