TSRM/MK4 Supra/Repair Manual
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BE/Body Electrical Systems — Clock Troubleshooting, page 115

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p.116
Clock Troubleshooting — MK4 Supra Body Electrical Systems, page 115
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Page text (OCR transcript)
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.