Instrument Cluster / Carrier: Service Precautions

Do not use a test light to diagnose the IPC electrical systems unless specifically instructed by diagnostic procedures. Use the connector test adapter kit (J 35616) when diagnostic procedures require probing of connectors. Refer to Special Tools. The instrument Panel Cluster (IPC) will withstand normal current draws associated with vehicle operations. Avoid overloading any circuit. When testing for opens or shorts, do not ground or apply voltage to the IPC circuits unless instructed to do so. These circuits may only be tested using a Digital Multimeter (DMM) J 39200 or equivalent. Electrical circuits should be tested with a DMM, while the IPC connector remains connected to the IPC or the recommended breakout box. Never remove or apply voltage to the IPC with the key in the RUN position.

Before removing or connecting battery cables, fuses or connectors always turn the key to the LOCK position. Whenever a IPC removal and replacement is performed, follow the removal and replacement instructions.