TSRM/MK4 Supra/Repair Manual
Repair ManualWiring Diagrams
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IN/Introduction12 / 44
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INTRODUCTION — PRECAUTION — MK4 Supra Introduction, page 12
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When the negative (–) terminal cable is disconnected from the battery, memory of the clock and audio systems will be cancelled. So before starting work, make a record of the con- tents memorized by the audio memory system. When work is finished, reset the audio systems as before and adjust the clock. This vehicle has power tilt and power telescopic steering, power seat, power outside rear view mirror and power shoul- der belt anchorage, which are all equipped with memory function, it is not possible to make a record of the memory contents. So when the work is finished, therefore it will be necessary to explain this fact to the customer, and ask the customer to adjust the features and reset the memory. To avoid erasing the memory of each memory system, never use a back–up power supply from outside the vehicle. 3. Even in cases of a minor collision where the SRS does not deploy, the steering wheel pad, front passenger airbag assembly and front airbag sensors should be inspected (See pages RS–10, 20, 30). 4. Never use SRS parts from another vehicle. When replacing parts, replace them with new parts. 5. Before repairs, remove the airbag sensors if shocks are likely to be applied to the sensors during repairs. 6. Never disassemble and repair the front airbag sensors, center airbag sensor assembly, steering wheel pad or front passenger airbag assembly in order to reuse it. 7. If the front airbag sensors, center airbag sensor assembly, steering wheel pad, front passenger airbag assembly or seat belt pretensioners have been dropped, or if there are cracks, dents or other defects in the case, bracket or connector, replace them with new ones. 8. Do not expose the front airbag sensors, center airbag sensor assembly, steering wheel pad, front passenger airbag assembly or seat belt pretensioners directly to hot air or flames. 9. Use a volt/ohmmeter with high impedance (10 kΩ/V minimum) for troubleshooting of the electrical circuit. 10. Information labels are attached to the periphery of the SRS components. Follow the instructions on the notices. 11. After work on the supplemental restraint system is completed, perform the SRS warning light check (See page RS–44).