INTERIOR Seat Belt
Diagnosis connector”
With voltmeter
-
-
With multi-use tester
SEAT BELT
TROUBLESHOOTING GUIDE
INPUT CHECK
Using the multi-use tester or voltmeter, check whether or not
the input signals from each switch are being input to the
ETACS unit.
(1) Connect the multi-use tester to the diagnosis check
connector located at the right side of the junction block or
connect the voltmeter between the ETACS terminal and
the ground terminal.
(2) Check if the buzzer of the multi-use tester sounds or the
needle of the voltmeter moves when each switch noted
below is operated.
If the buzzer sounds or the needle moves, the input signals
are being input to the ETACS unit, so that switch can be
considered to be functioning normally. If not, the switch or
switch input circuit is faulty. Check the switch and the
switch input circuit.
l
Ignition switch
TROUBLESHOOTING QUICK-REFERENCE TABLE
Problem
The warning light does not
flash and the warning buzzer
also does not sound.
Probable cause
Damaged or discon-
nected wiring of the
ignition switch input
circuit
Damaged or discon-
nected wiring of the
seat belt warning
and buzzer activa-
tion circuit
Blown fuse
Malfunction of the
electronic control unit
Check method
If a malfunction is in-
dicated as a result of
checking the input
signals, check by follow-
ing individual part and
the circuit check No. 1
procedures
Check by following in-
dividual part and the
circuit check No. 2
procedures
Repair the wiring
harness.
Replace the fuse.
Replace the electron-
ic control unit.
TSB Revision
Содержание 3000GT 1991
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