Overheated (exterior heat) (Wiring diagrams)

Overheated (exterior heat)

Symptom

Wiring damaged or shorted to ground causing: Fuse(s) to blow, circuit(s) not to operate or not to operate correctly. Wiring damaged or open circuit causing: Circuit(s) not operating or not operating correctly.

Wire insulation melted

Cause

The insulation has melted due to contact with a component which is hot, e.g. the exhaust manifold. Possibly due to the harness being routed or retained incorrectly.

Action

Locate damaged section of wiring/harness, carefully cut back the tape or insulation from the harness with a suitable tool. If the harness has a black plastic conduit simply pull out the desired wire(s). See Repair Techniques.

Overheated (short circuit)

Symptom

Wiring damaged or shorted to ground causing: Fuse(s) to blow, circuit(s) not to operate or not to operate correctly. Wiring damaged or open circuit causing: Circuit(s) not operating or not operating correctly.

Wire insulation burned

Cause

The insulation has burned due to the wire being shorted. Possibly due to the nature of the fault or previous attempts at repair. Burned insulation is normally due to more current passing through a wire than it is rated for.

Action

Locate damaged section of wiring/harness, carefully cut back the tape or insulation from the harness with a suitable tool. If the harness has a black plastic conduit simply pull out the desired wire(s). See Repair Techniques.