Load Testing A Battery Or Ignition Feed Circuit
DIAGNOSTIC LOAD TEST (BATTERY/IGNITION FEED CIRCUIT)
- multimedia:A supplement to the article is available.
- Disconnect the connector from the device(s) to gain access to the terminals and isolate the circuit being tested.
- Using an approved connector back probe tool, connect the positive lead of the load test tool to the circuit being tested at point (A).
- Connect the negative lead of the load test tool to the negative side of the Battery or a good chassis ground.CAUTION:
Use only approved connector back probe tools when back probing a connector so as not to cause damage to the terminals or insulation of the connector. Damage to the terminals can cause poor terminal contact or retention. Damage to the insulation can introduce corrosion due to water intrusion.
Does the bulb light bright, as when compared to a direct Battery connection?
Yes
- The circuit being tested can carry a load, check other circuits, connectors and terminals for concerns.
No
- Repair the circuit, connector or terminal that has an open or excessive resistance.
- Perform any related Recalls or Service Bulletins that may apply.