TSRM/MK2 Supra/Repair Manual
Repair ManualWiring Diagrams
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BE/Body Electrical System38 / 121
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BODY ELECTRICAL SYSTEM — Instruments and Sender Gauges — MK2 Supra Body Electrical System, page 38
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BE-38 BODY ELECTRICAL SYSTEM — Instruments and Sender Gauges SECTION TROUBLE A Speedometer No display at all Only speedometer? Yes Replace No ①Fuse GAUGE (7.5A) OK? No Replace Display? Yes No Yes Fuse blows with meter disconnected Fuse blows No Yes Check vehicle side ③With the ignition S/W at ON position, check that there is 4.0 — 6.0V at terminal FV of fuel sender gauge. Display when other meters disconnected? No OK No Yes Replace speedometer ④With the ignition S/W at ON position, check that there is 4.0 — 6.0V between terminals 2 and 6 of tachometer connector. No OK ⑤Check for short between terminal VDD and body ground of each meter. Short Replace bad gauge Remove meter and connector sub-harness(SST) ②With the ignition S/W at ON position, check that there is battery voltage between terminals 8 and 16 of sub-harness (SST). No Bad wiring between fuse and meter OK Only speedometer display when other meters disconnected? No Replace speedometer Yes Connect meters one by one and check when speedometer display goes out. Replace bad gauge