BE-44 BODY ELECTRICAL SYSTEM — Instruments and Sender Gauges SECTION TROUBLE E Speedometer Brightness does not change when rheostat is turned Only speedometer and tachometer? Yes Replace speedometer No Only tachometer? Yes Remove tachometer and connect sub-harness (SST) No Remove meter and connect sub- harness (SST). ①With the ignition S/W at ON position, check that voltage between terminals 4 and 6 of tachometer connector is more than 3V with rheostat at MAX. OK ②With the light S/W turned ON, does voltage between terminals 1 and 7 of sub-harness vary from 0 to 9V when rheostat is turned? Yes Replace tachometer Replace speedometer No ③With the light S/W turned ON,does voltage between terminals TR and E of rheostat vary when rheostat is operated? No Yes Check rheostat Bad wiring between (See page BE-18) rheostat and meter Remove other meters and check for No Replace speedometer brightness change of speedometer. Yes Connect other meters one by one to find bad meter. Replace bad meter