Harness or Connector Intermittents

Many intermittent open or shorted circuits come and go with harness or connector movement caused by the following type conditions:

• Vibration.
• Engine torque.
• Bumps or rough pavement.

Test for intermittents by performing the applicable procedure from the following list:

• Move related connectors and wiring while monitoring the appropriate scan tool data.
• Move related connectors and wiring with the component commanded ON and OFF, with the scan tool. Observe the component operation.
• With the engine running, move related connectors and wiring while monitoring engine operation.

Verify whether the harness or connector movement affects any of the following systems:

• Data displayed.
• Component or system operation.
• Engine operation.

Repair the components as necessary.