Operation CHARM: Car repair manuals for everyone.

- Pre-Diagnostic Instructions

All of the diagnostic procedures have specific conditions under which each test is to be performed. Basic conditions that apply to all tests are:

- Battery in good condition and fully charged.
- Adequate fuel in the fuel tank.
- Fuel is uncontaminated.
- Maintenance components in good condition (Fuel Filter, Spark Plugs).

Read each test procedure carefully to determine additional test conditions.