Testing for Continuity
Testing for Continuity |
Special Tools
EL 39200 Digital Multimeter (DMM)For equivalent regional tools, refer to Special Tools .
Refer to Test Probe Caution .
The following procedures verify good continuity in a circuit.
With a Digital Multimeter (DMM) |
1. |
Set the rotary dial of the DMM to the Ω position.
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2. |
Disconnect the power feed (i.e. fuse, control module) from the suspect circuit.
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3. |
Disconnect the load.
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4. |
Press the MIN MAX button on the DMM.
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5. |
Connect one lead of the DMM to one end of the circuit to be tested.
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6. |
Connect the other lead of the DMM to the other end of the circuit.
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7. |
If the DMM displays low or no resistance, the circuit has good continuity.
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With a Test Lamp |
Note | ||
Only use the test lamp procedure on low impedance power and ground circuits. |
1. |
Remove the power feed (i.e. fuse, control module) from the suspect circuit.
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2. |
Disconnect the load.
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3. |
Connect one lead of the test lamp to one end of the circuit to be tested.
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4. |
Connect the other lead of the test lamp to battery positive voltage.
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5. |
Connect the other end of the circuit to ground.
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6. |
If the test lamp illuminates (full intensity), then the circuit has good continuity.
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