How to Diagnose the Problem

HOW TO DIAGNOSE THE PROBLEM
1. To avoid incorrect diagnostics: this book needs to be followed accurately. Unless stated: do not jump directly to a section that could contain the solution: some important information may be missed.
2. The sections in CAPITALS and bold are the main sections that can be found in the contents.
3. The GOTO "SECTION" means to continue to check going to the "section".
4. The GO THROUGH "SECTION" means to go through the "section" and then to go back to the place the GO THROUGH was written.
5. BASIC ELECTRIC CIRCUITS:
You should understand the basic theory of electricity. This will include the meaning of voltage, amps, ohms, and what happens in a circuit with an open or shorted wire. You should also be able to read and understand wiring diagrams.
6. IGNITION CYCLE:
When the car is driven a malfunction can occur due to a car wiring harness problem, in this case the driver can reset the system (as on a personal computer). To reset the computer he must:
- Stop the car and the engine.
- Turn the key ignition OFF.
- Turn the key ignition ON.