2-39
Electronic control system
Thermo sensor
Output voltage is less than 0.20 V or
more than 4.65 V.
Set to 50 °C (122 °F) when running.
Intake air tempera-
ture sensor
Output voltage is less than 0.20 V or
more than 4.65 V.
Set to 25 °C (77 °F).
High engine idle speed.
Stop engine synchronization con-
trol.*
Oil pressure sensor
Output voltage is less than 0.20 V,
more than 4.80 V for 260 seconds,
or more than 4.80 V when engine is
stopped.
High engine idle speed.
Knock sensor
Output voltage is less than 0.20 V or
more than 4.80 V.
High engine idle speed.
Reduce engine speed approximate-
ly 300 r/min.
Stop engine synchronization con-
trol.*
PTT sensor
Output voltage is less than 0.20 V or
more than 4.80 V.
Deactivate tilt limiter.
Low power supply
voltage under load-
ed condition
Battery voltage is less than 11.99 V,
when the engine speed is 2000 r/
min or more and running for 120
seconds.
High engine idle speed.
OCV Open or short circuit.
Set VCT in full retard position.
High engine idle speed.
Stop engine synchronization con-
trol.*
Immobilizer (Y-COP) Communication error occurs.
Stop engine synchronization con-
trol.*
Main relay
ECM input voltage is 3.99 V or more
when the main relay is off.
—
Water pressure sen-
sor
Output voltage is less than 0.20 V or
more than 4.80 V.
—
Water detection
switch
Water detection switch is turned on.
Operates the buzzer.
SPS
Output voltage is less than 0.20 V or
more than 4.80 V.
Use value for SPS 2 when SPS 1 is
malfunctioning and use value for
SPS 1 when SPS 2 is malfunction-
ing.
Stop engine synchronization con-
trol.*
Output voltages of both SPS 1 and
SPS 2 are less than 0.20 V or more
than 4.80 V.
Difference between SPS 1 and SPS
2 voltages is 0.3 V or more.
Engine speed is limited to 1500 r/
min.
Engine cannot be started.
Stop engine synchronization con-
trol.*
Item Trouble conditions to be detected Controls performed by ECM
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