Vibration Method: Notes

If a malfunction occurs or becomes worse while driving on a rough road or when the engine is vibrating, perform the steps below.
NOTE:
- There are several reasons why vehicle or engine vibration could cause an electrical malfunction. Some of the things to check for are:
  - 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 wiring to become pinched between parts.
- The connector joints, points of vibration, and places where wiring harnesses pass such as through the firewall and body panels are the major areas to be checked.