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TESTING AND REPAIRS
1. Do not use wires or harnesses with broken insulation.
Replace them or repair them by wrapping the break with electrical tape.
2. After installing parts, make sure that no wires are pinched under them.
3. When using electrical test equipment, follow the manufacturer's instructions and those described in this manual.
4. If possible, insert the probe of the tester from the wire side (except waterproof connector).
5. Use a probe with a tapered tip.
FIVE-STEP TROUBLESHOOTING
1. Verify the complaint
Turn on all the components in the problem circuit to verify the customer complaint. Note the symptoms. Do not
begin disassembly or testing until you have narrowed down the problem area.
2. Analyze the schematic
Look up the schematic for the problem circuit.
Determine how the circuit is supposed to work by tracing the current paths from the power feed through the circuit
components to ground. 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 operation, identify one or more possible causes of
the problem.
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