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Self-diagnosis Function
(1)
Function
This function detects a failure in the sensor and the actuator and alerts the user
to the occurrence of failure by lighting up a pilot light on meter / displaying a fail-
ure code and simultaneously launching the evacuation procedure.
(2) Operation
Abnormality: The alarm comes on (during engine run),
Alarm comes on + Abnormality code appears (engine at standstill)
Failure
code
Item
Major cause of failure
Engine
operation
11
Cam sensor
• Break/short circuit between cam sensor and ECU
• Cam sensor failure
Not possible
12
Crank sensor
• Interruption/short circuit between crank sensor and ECU
• Crank sensor failure
Not possible
13
Intake sensor
(broken/short circuit)
• Break/short circuit between intake pressure sensor and
ECU
• Failure of intake pressure sensor
Possible
14
Intake sensor (failure of
piping system)
• Failure of intake pressure sensor piping system
(misaligned, interrupted)
Possible
15
TPS (broken/short
circuit)
• Break/short circuit between TPS and ECU
• Failure of TPS sensor
Possible
20
Failure of intake
pressure sensor or
atmospheric pressure
sensor
• Intake pressure sensor failure
• Failure of atmospheric pressure sensor
Possible
21
Water temperature
sensor (break/short
circuit)
• Break/short circuit between water temp. sensor and ECU
• Failure of water temperature sensor
Possible
22
Intake temp. sensor
(broken/short circuit)
• Break/short circuit between intake temp. sensor and ECU
• Failure of intake temperature sensor
Possible
23
Atmospheric pressure
sensor (broken/short
circuit)
• Break/short circuit between atmospheric pressure sensor
and ECU
• Failure of atmospheric pressure sensor
Possible
30
Overturn sensor
(check for overturn.)
• Overturn sensor detects state of overturn.
Not possible
33
Ignition failure
of #1 cylinder
• Broken line between ignition coil and ECU
• Failure in ignition coil interior
Possible
34
Ignition failure
of #2 cylinder
• Broken line between ignition coil and ECU
• Failure in ignition coil interior
Possible
