Vibration Method
- If a malfunction occurs or worsens while driving on a rough road or the engine vibrates, perform the following steps.
NOTE:
- There are several reasons why the vehicle or engine vibration could cause an electrical malfunction. Inspect the vehicles for the following:
- Connectors not fully seated.
- Wiring harnesses not having full play.
- Wires laying across brackets or moving parts.
- Wires routed too close to hot parts.
- An improperly routed, improperly clamped, or loose wiring harness can cause it to become pinched between parts.
- The connector joints, points of vibration, and places where wire harnesses pass through the firewall, and the body panels are the major areas to be checked.