. INSTRUMENT CLUSTER 60-8 _ TROUBLESHOOTING HINTS CONDITION POSSIBLE CAUSE ACTION 0 A gauge pointer doesn't move, 0 Inoperative sending unit 0 Check Fuse 18 0" the gauge is inaccuarate 0 Check resistance of sending unit Check continunity of circuit wiring from gauge to sending unit 0 Replace gauge if sender and wiring are OK 0 None of the gauge pointers O No voltage to cluster 0 Check power to cluster 640 (RH) move wire 0 Tachometer is inoperative or 0 Poor connections 0 Check voltage and ground to Tachometer inaccurate 0 Check for 1 ohm or less resistance between terminal 6 and terminal 7 on connector 0250 (Diesel Engines Check between Terminals 6 And 2 on 0251) 0 Check connections and continuity of wiring between terminal 6 on the Instrument Cluster and the 11 (DG/Y) wire to the Engine RPM Sensor. (Diesel) With gasoline engines, check between terminal 6 on the Instrument Cluster and 11 (DG/Y) wire to the Ignition coil. o A warning indicator is always 0 Inoperative switch 0 Disconnect the suspect switch. If the indicator goes out, replace on (except Engine warning the switch. If the indicator is still on, check the related circuit for Indicator) a short to ground. '0 A warning indicator wont light I Inoperative Switch 0 Ground the terminal to the suspect switch. If the indicator lights. when proper conditions are a Open ground path replace the switch. If the indicator doesnt light, check the lamp met (except High Beam and . Open indicator bulb and related circuit for an open. Fasten Seat Belt Warning Indicators) (continued)