Explorer 2WD V6-245 4.0L SOHC VIN E EFI (1997)
Instrument Panel Circuit Board: Description and Operation
Printed Circuit
The instrument cluster printed circuit supplies current to the instrument cluster indicators and gauges. It is constructed of copper foil bonded to a
polyester base film (usually referred to as Mylar).
The circuit board is mounted to the cluster housing and, due to its location, cannot be easily tested or inspected in the vehicle. This makes the circuit
board vulnerable to damage when a probe is used for in-vehicle testing because the probe can pierce the printed circuit, or in some cases, burn the
copper conductor.
Since there is no approved procedure for in-vehicle testing of the circuit board, it must be removed from the vehicle for visual inspection. If no visual
damage is evident, each circuit should be checked with an ohmmeter. If an open circuit or a short is detected, the circuit board must be replaced.
