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METER AND GAUGES
-
Digital
Type
Combination Meter
Self-check
Digital type combination meter consists of three
units:
a
control unit, power unit, and display unit
In order to judge if there
is
a
defect in the meter
and which unit
is
malfunctioning, troubleshooting
should be performed by using the following two
types of self-check functions built into the meter
For details, refer to "Trouble-shooting".
DISPLAY CHECK
This
is
used
to check for an open circuit in each
segment of the display and
a
short circuit between
segments.
(1)
While pushing trip reset switch
A,
turn igni-
tion switch from
"OFF"
to
"ON".
Trip reset
switch
A
should remain pushed in until self-
check operation starts.
(2)
Meter
starts
to automatically perform self-
check. Segments for meters and gauges should
illuminate one after another.
(3)
If any particular segment remains off, combina-
tion meter itself
is
faulty
SE L143J
A
display check
will
be cancalled and
the
normal
display restarted in the following
cases:
0
If
the vehicle has operated during the display
check.
0
If
a
series of display check items have been
completed.
PRE-PROGRAMED SIGNAL CHECK
This
is
used
to check for
a
defect in the meter
(1)
Remove power unit.
(2)
Remove nuts which secure instrument
(3)
Remove instrument switches.
(4)
Remove cluster lid
A.
switches
instrument
swltch
instrument
witch
Cluster
lid
A
\
\
/-\
I
SEL144.l
(5)
Remove combination meter.
(6)
Disconnect connectors from instrument har-
(7)
Connect
a
self-checking tool (Diagnostic sub-
ness
harness) to meter.
Otagnastic
sub-harness
ITooil
SEL145J
KV999U0060
EL-70
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