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INTERMITTENT CONCERN TROUBLESHOOTING

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## Vibration Method

• If a malfunction occurs or becomes worse while driving on a rough road or when the engine is vibrating, perform following the steps:

  Note

  • There are several reasons why vehicle or engine vibration could cause an electrical malfunction. Some of the things to inspect for:

  - 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 through the firewall, body panels are the major areas to be inspected.
  • Inspect for DTCs or malfunctions by slightly shaking wiring harnesses and connectors that are suspected of causing the malfunction.

## Connector Terminal Check Method

1. Inspect the connection condition of each female terminal.

2. Insert the male terminal into the female terminal to inspect for looseness.