TSRM/MK3 Supra/Repair Manual
Repair ManualWiring Diagrams
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BE/Body Electrical System17 / 116
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LIGHTING
Troubleshooting — MK3 Supra Body Electrical System, page 17
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LIGHTING Troubleshooting Problem | Possible cause | Remedy | Page Only one light does not light (all exterior) | Light bulb burned out | Replace bulb | | Socket, wire or ground faulty | Repair as necessary | Headlights do not flip up | Fusible link blown | Replace fusible link | BE-4 | RTR fuse blown | Replace fuse and check for short | | Light retractor control relay faulty | Check relay | BE-23 | Light retractor motor faulty | Check motor | BE-24 | Wiring or ground faulty | Repair as necessary | No headlights light | Fusible link blown | Replace fusible link | | Headlight control relay faulty | Check relay | BE-22 | Light control switch faulty | Check switch | BE-22 | Wiring or ground faulty | Repair as necessary | High beam headlights or headlight flasher do not operate | Light control switch faulty | Check switch | BE-22 | Wiring faulty | Repair as necessary | Tail and license lights do not light | TAIL fuse blown | Replace fuse and check for short | BE-4 | Fusible link blown | Replace fusible link | | Taillight control relay faulty | Check relay | BE-22 | Light control switch faulty | Check switch | BE-22 | Light retractor control relay faulty | Check relay | BE-23 | GRADUAL | | Wiring or ground faulty | Repair as necessary | Stop lights do not light | STOP fuse blown | Replace fuse and check for short | BE-4 | Stop light switch faulty | Adjust or replace switch | | Wiring or ground faulty | Repair as necessary | Stop lights stay on | Stop light switch faulty | Adjust or replace switch | Instrument lights do not light (Taillights light) | Light control rheostat faulty | Check rheostat | BE-28 | Wiring or ground faulty | Repair as necessary | Turn signal does not flash on one side | Turn signal switch faulty | Check switch | BE-22 | Wiring or ground faulty | Repair as necessary | Turn signals do not operate | TURN fuse blown | Replace fuse and check for short | BE-4 | Turn signal flasher faulty | Check flasher | BE-26 | Turn signal switch faulty | Check switch | BE-22 | Wiring or ground faulty | Repair as necessary | Hazard warning lights do not operate | HAZ-HORN fuse blown | Replace fuse and check for short | BE-4 | Turn signal flasher faulty | Check flasher | BE-26 | Hazard warning switch faulty | Check switch | BE-26 | Wiring or ground faulty | Repair as necessary |