TSRM/MK2 Supra/Repair Manual
Repair ManualWiring Diagrams
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BE/Body Electrical System55 / 121
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BODY ELECTRICAL SYSTEM — Instruments and Sender Gauges — MK2 Supra Body Electrical System, page 55
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BODY ELECTRICAL SYSTEM — Instruments and Sender Gauges BE-65 SECTION TROUBLE P Fuel gauge Water temp. gauge Lights do not dim when light and rheostat S/W turned ON. For Fuel Gauge Only fuel gauge? (Does temp. gauge dim?) Yes Replace fuel and temp. gauges Yes Only temp. gauge? (Does temp. gauge dim?) No No Only fuel and temp. gauges do not dim? (Speedometer OK?) Yes No Remove meter and connect sub-harness (SST) Refer to Section C ① With the ignition S/W at ON position and connector of fuel and temp. gauges disconnected, check that there is voltage between terminals of the connector as follows: 3 – 5 Light S/W ON 4.0 – 6.0V Light S/W OFF 0 – 1.0V 4 – 5 Light S/W turned ON Rheostat turned OFF 3.0 – 6.0V Rheostat operate (MIN — MAX) 0 – 3.8V No Replace speedometer OK Replace fuel and temp. gauges ① Fuel and Temp. Gauges [Diagram showing fuel and temp gauges with meter connections labeled GND, TC②, and TR②] For Temp. Gauge