Operation Manual

FUEL INJECTION SYSTEM
8-54
5 Ignition coil malfunction
(Check the continuity of pri-
mary coil.)
Ignition coil inspection
method
Refer to “CHECKING THE
IGNITION COIL” on page 8-
134.
Start and idle the engine for
approximately 5 seconds.
Then, check the fault code
indication.
No fault code indicated. →
Recovered.
Fault code indicated. →
Check the next step.
6 ECU malfunction Check in the diagnostic mode
(Code No. d:30).
If not ignited, replace the
defective ECU.
Fault code No. 37
Item Engine speed is high when the engine is idling.
Fail-safe system
Able to start engine
Able to drive vehicle
Diagnostic code No. —
Meter display —
Procedure —
Item/components and
probable cause
Check or maintenance job
Sensor inspection proce-
dure
1 Incorrect front wheel sensor
signal.
Check the front wheel sensor.
Check in the diagnostic mode
(Code No. d:07).
Front wheel stop: The pulse
integrated value should be
constant.
Rotate the front wheel a few
turns manually and enter the
speed pulse: The pulse inte-
grated value will be added.
Indication is incorrect. →
Refer to Fault code No. 42
Start and idle the engine for
approximately 10 seconds.
Then, check the fault code
indication.
No fault code indicated. →
Recovered.
Fault code indicated. →
Check the next step.
Fault code No. 33
Item
Ignition coil: open or short circuit detected in the primary lead of the
ignition coil. (no normal signals are received from the ignition sys-
tem.)
Fail-safe system
Unable to start engine
Unable to drive vehicle
Diagnostic code No. d:30
Actuation
Actuates the ignition coil five times at one-second intervals.
Illuminates the engine trouble warning light.
Procedure
Check that a spark is generated five times.
• Connect an ignition checker.
Item/components and
probable cause
Check or maintenance job
Sensor inspection proce-
dure