Danger: This procedure should not be performed on high voltage circuits. Performing this procedure on high voltage circuits may result in serious injury or death.
Caution: Refer to Test Probe Caution in the Preface section.
The following procedures verify good continuity in a circuit.
With a DMM
- Set the rotary dial of the DMM to the ohm position.
- Disconnect the power feed (i.e. fuse, control module) from the suspect circuit.
- Disconnect the load.
- Press the MIN MAX button on the DMM.
- Connect one lead of the DMM to one end of the circuit to be tested.
- Connect the other lead of the DMM to the other end of the circuit.
- If the DMM displays low or no resistance, the circuit has good continuity.
With a Test Lamp
Note: Only use the test lamp procedure on low impedance power and ground circuits.
- Remove the power feed (i.e. fuse, control module) from the suspect circuit.
- Disconnect the load.
- Connect one lead of the test lamp to one end of the circuit to be tested.
- Connect the other lead of the test lamp to battery positive voltage.
- Connect the other end of the circuit to ground.
- If the test lamp illuminates (full intensity), then the circuit has good continuity.