Diagnostic Tools Required
- CCC system testing requires a dwell meter, tachometer, test light, ohmmeter, digital voltmeter (with 10 megohm minimum resistance), vacuum pump, vacuum gauge and jumper wires.
- Jumper wires are used to by-pass a circuit and to insert between special connectors. Using proper terminals, make jumper wires approximately 6" long. One wire should have male connectors at both ends, 2 should have female connectors at both ends, and the others should be male at one end and female at the other.
- The dwell meter is used to check mixture control (M/C) solenoid operation. It must be set on 6-cylinder scale. Connect positive dwell meter lead to bright green connector near M/C solenoid and negative lead to ground. 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 brands of meters affect system operation.
- 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.