Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHRYSLER1999300M V6-3.5L VIN GREPAIR AND DIAGNOSISBODY AND FRAMEBODY CONTROL SYSTEMSBODY CONTROL MODULEDIAGRAMSDIAGNOSTIC AIDSTROUBLESHOOTING TOOLS
1999 Chrysler 300M V6-3.5L VIN G
Troubleshooting Tools
1999 Chrysler 300M V6-3.5L VIN GSECTION 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.
- 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.
- 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.
- 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.
- Probing Tools - These tools are used for probing terminals in connectors. Select the proper size tool from Special Tool Package 6807 and insert it into the terminal being tested. Use the other end of the tool to insert the meter probe.
When diagnosing a problem in an electrical circuit, there are several common tools necessary. These tools are listed and explained below.
- 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.
- 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.
- 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.
Probing Tool:
- Probing Tools - These tools are used for probing terminals in connectors. Select the proper size tool from Special Tool Package 6807 and insert it into the terminal being tested. Use the other end of the tool to insert the meter probe.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.