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FUEL SYSTEM - Engine Control Unit
I
Ground
Engine wam-
indicator
light)
The diagnosis connector is located next to the junction block.
By connecting a voltmeter between the No.1 and No.12
terminals of the diagnosis connector, the meter pointer will
deflect according to the output pattern shown before so that
the diagnosis code can be read.
To clear the diagnosis codes that are stored in the memory,
disconnect the .battery ground cable for 10 seconds.
When a malfunction is detected in items related to emission
control (items marked Q in the table), the engine warning light
(Malfunction indicator light) is illuminated to warn the driver of
the necessity for an engine check.
When the malfunction is corrected, the light goes off. The light
also goes off when the ignition switch is turned OFF. At that
time, it will not come on when the ignition switch is turned ON
unless a malfunction is detected again.
However, the light remains on for E.5 seconds, after the
ignition switch is turned on. This is to allow the driver to check
that the engine warning light circuit is operating normally.
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