TSRM/MK4 Supra/Repair Manual
Repair ManualWiring Diagrams
p.114
BE/Body Electrical Systems115 / 203
p.116
CLOCK TROUBLESHOOTING — MK4 Supra Body Electrical Systems, page 115
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BODY ELECTRICAL SYSTEM – CLOCK BE–115 CLOCK TROUBLESHOOTING HINT: Troubleshoot the clock according to the table below. Clock will not operate | 1 Clock loses or gains time | 2 1 | CLOCK WILL NOT OPERATE +B GND ●5-1 (a) Check that the battery positive voltage is 10 — 16 V. If voltage is not as specified, replace the battery. (b) Check that the DOME fuse is not blown. If the fuse is blown, replace the fuse and check for short. (c) Troubleshoot the clock as follows. HINT: Inspect the connector on the wire harness side. Is there battery positive voltage between terminal +B and body ground? No Open or short circuit in wire harness be- tween terminal +B and DOME fuse. Yes Is there continuity between terminal GND and body ground? No Open circuit in wire harness between ter- minal GND and body ground. Yes Replace clock assembly.