Sephia LS Sedan L4-1.8L (1998)
fuse, ground, or switch, and so on, are referred to in each circuit schematic. Try to operate any shared circuits you didn't check in step 1. If the
shared circuits work, the shared wiring is OK, and the cause must be in the wiring used only by the problem circuit. If several circuits fail at the
same time, the fuse or ground is a likely cause.
Based on the symptoms and your understanding of the circuit's operation, identify one or more possible causes.
3. Find the Cause
Make circuit tests to check the diagnosis you made in step 2. Keep in mind that a logical, simple procedure is the key to efficient troubleshooting.
Test for the most likely cause of failure first. Try to make tests at points that are easily accessible.
4. Repair The Problem
Once the specific problem is identified, make the repair. Be sure to use proper tools and safe procedures.
5. Check the repair
Turn on all components in the repaired circuit in all modes to make sure you've fixed the entire problem. If the problem was a open fuse, be sure to
test all of the circuits on that fuse. Make sure no new problems turn up and the original problem does not recur.
