Vibration method

If malfunction occurs or becomes worse while driving on a rough road or when 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.
- Wire 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 harness can cause wiring to become pinched between parts.
The connector joints, points of vibration, and places where wire harnesses pass through the firewall, body panels, etc. are the major areas to be checked.