Harness or Connector Intermittents

WARNING: This page is about a different car, the 2003 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.

Many intermittent open or shorted circuits are affected by harness or connector movement that is caused by vibration, engine torque, bumps or rough pavement, etc. Test for this type of condition 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.

If harness or connector movement affects the data displayed, component and/or system operation, or engine operation, inspect and repair the harness and/or connections as necessary.