1998 · FUEL [13] · страница 9 из 104 · Открыть оригинал PDF ↗
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ENGINE WARNING LAMP INSPECTION
(1) Check to be sure, when the ignition switch is set to the
"ON" position, that the lamp illuminates for about five
seconds and then switches OFF
(2) If the lamp does not illuminate, check for damage or
disconnection of the harness, or fora blown fuse or
failed light bulb_
SELF-DIAGNOSIS
The engine control unit monitors the inputloutput
signals (some signals at all times and the others
under specified conditions) of the engine control
unit; When it is noticed that an irregularity has
continued for a specified time or longer from when
the irregular signal is initially monitored, passing
certain number; the engine control unit judges that
an irregularity has occurred, memorizes the
malfunction code, and outputs the signal to the
self-diagnosis output terminals. There are 18
diagnosis items, including the normal state , and the
diagnosis results can be read out with a voltmeter
or MUT-II. Moreover, since memorization of the
malfunction codes is backed up directly by the
battery, the diagnosis results are memorized even
if the ignitionkeyis turned off.The malfunction
codes will, however; be erased when the battery
terminal or the engine control unit connector is
disconnected.
Caution
If the sensor connector is disconnected while
the ignition switch is ON, the malfunction code
is memorized: In this instance, either send the
malfunction-code-erase signal from the MUT-II
to the engine control unit; or disconnect the
battery's negative (~) terminal for ten seconds
Orlonger; the diagnosis memory will be erased:
The 18 diagnosis items are provided as follows
and if plural items are activated, they are all
indicated sequentially from the smallest code
number:
The malfunction codes are also erased by setting
theignition switch to the "ON" position and then
sending the malfunction-code-erase signalfromthe
MUT-II to the engine control unit.
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