Electrical Troubleshooting Tools

ELECTRICAL TROUBLESHOOTING TOOLS (TEST LIGHT)




The test light, as shown in figure, uses a 12 V bulb. The two lead wires should be connected to probes.

The test light is used for simple voltage checks and in checking for short circuits.

CAUTION: When checking the engine control module (ECM), never use a bulb exceeding 3.4 W

ELECTRICAL TROUBLESHOOTING TOOLS(JUMPER WIRE)




The jumper wire is used for testing by shorting across switch terminals ground connections.

CAUTION: Do not connect a jumper wire from the power source line to a body ground. Such a connection may cause damage to harnesses or electronic components.