For 1990-2009 cars only
Caution: Do not insert test equipment probes (DMM etc.) into any connector or fuse block terminal. The diameter of the test probes will deform most terminals. A deformed terminal will cause a poor connection, which will result in a system failure. Always use the J-35616 GM-Approved Terminal Test Kit in order to front probe terminals. Do not use paper clips or other substitutes to probe terminals.
When using the J-35616 GM-Approved Terminal Test Kit, ensure the terminal test adapter choice is the correct size for the connector terminal. Do not visually choose the terminal test adapter because some connector terminal cavities may appear larger than the actual terminal in the cavity. Using a larger terminal test adapter will damage the terminal. Refer to the J-35616 GM-Approved Terminal Test Kit label on the inside of the J-35616 GM-Approved Terminal Test Kit for the correct adapter along with the connector end view for terminal size.The following procedures verify good continuity in a circuit.
Using a DMM
- Set the rotary dial of the DMM to the W 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 and a tone is heard, the circuit has good continuity.
Using 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.
