Caravan V6-201 3.3L (1995)
Testing For A Short-to-ground On Fuses Powering Several Loads
1. Refer to the wiring diagrams and disconnect or isolate all items on the fuse circuit.
2. Replace the blown fuse.
3. Supply power to the fuse by turning ON the ignition switch or re-connecting the battery.
4. Start connecting the items in the fuse circuit, one at a time. When the fuse blows, the circuit with the short-to-ground has been isolated.
Testing For Voltage Drop
Testing For Voltage Drop
1. Connect the positive lead of the voltmeter to the side of the circuit closest to the battery.
2. Connect the other lead of the voltmeter to the other side of the switch or component.
3. Operate the item.
4. The voltmeter will show the difference in voltage between the two points.
Troubleshooting Tools
TROUBLESHOOTING TOOLS
When diagnosing a problem in an electrical circuit, there are several common tools necessary. These tools are listed and explained below.
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Jumper Wire - This is a test wire used to connect two points of a circuit. It can be used to bypass an open in a circuit.
WARNING: NEVER USE A JUMPER WIRE ACROSS A LOAD, SUCH AS A MOTOR, CONNECTED BETWEEN A BATTERY
FEED AND GROUND.
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Voltmeter - This instrument is used to check for voltage on a circuit. Always connect the black lead to a known good ground and the red lead to
the positive side of the circuit.
CAUTION: Most of the electrical components used in today's vehicle are solid state. When checking voltages in these circuits, use a meter with a
10 megohm or greater impedance.
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Ohmmeter - This instrument is used to check the resistance between two points of a circuit. Low or no resistance in a circuit can mean good
continuity or a shorted circuit.
CAUTION: Most of the electrical components used in today's vehicle are solid state. When checking resistance in these circuits, use a meter with
a 10 megohm or greater impedance. In addition, be sure the power is disconnected from the circuit. Circuits that are powered-up by the vehicle
electrical system can cause damage to the equipment and provide false readings.
