Preliminary Testing

CHECKOUT
^ Visually inspect the engine compartment to ensure all vacuum hoses and spark plug wires are properly and securely connected.

^ Examine all wiring harnesses and connectors for damaged, burned or overheated insulation, damaged pins, and loose or broken conditions. Check sensor shield connector.

^ Be certain the battery is fully charged.

^ All accessories should be off during diagnosis.


NOTES
^ When making measurements on a wiring harness, both a visual inspection and a continuity test should be performed. Inspect the connector pins for damage (corrosion, bent or spread pins, etc.) when directed to remove a connector.

^ When making voltage checks, a GROUND or LOW reading means any value within a range of 0 to 1 volt. Also VPWR or COIL PWR or HIGH readings mean any value that falls within a range of B+ to 2 volts less than B+.

^ When making resistance checks, make sure the ignition is in the KEY OFF position.

^ The RESET button must be pressed to clear a captured fault.

^ Never use the DIST without the proper Program Cartridge properly installed.