PRELIMINARY CHECK / Example
1. Before performing trouble diagnoses, read the "Preliminary Check", the "Symptom Chart" or the "Work Flow".
2. After repairs, re-check that the problem has been completely eliminated.
3. Refer to Component Parts and Harness Connector Location for the Systems described in each section for identification/location of components and
harness connectors.
4. Refer to the Circuit Diagram for quick pinpoint check. If you need to check circuit continuity between harness connectors in more detail, such as
when a sub-harness is used, refer to Wiring Diagram in each individual section and Harness Layout for identification of harness connectors.
5. When checking circuit continuity, ignition switch should be OFF.
6. Before checking voltage at connectors, check battery voltage.
7. After accomplishing the Diagnostic Procedures and Electrical Components Inspection, make sure that all harness connectors are reconnected as
they were.
Introduction
INTRODUCTION
OPEN:
A circuit is Open when there is no continuity through a section of the circuit.
There are two types of shorts.SHORT:
SHORT CIRCUIT -
When a circuit contacts another circuit and causes the normal resistance to change.When a circuit contacts a ground source and grounds the circuit.SHORT TO GROUND -
You may have to simulate vehicle vibrations while testing electrical components. Gently shake the wiring harness or electrical component to do this.
Refer to "HOW TO CHECK TERMINAL" to probe or check terminal.NOTE:
See: Diagrams/Diagnostic Aids/How to Check Terminals
Testing For "Opens" In the Circuit
TESTING FOR "OPENS" IN THE CIRCUIT