FUEL INJECTION SYSTEM
8-74
Fault code No. 39
Symptom Open or short circuit of primary injector lead
Fail-safe action
Engine startup: Possible (depending on the number of failed cylin-
ders)
Riding: Possible (depending on the number of failed cylinders)
Diagnostic monitor-
ing code No.
D:36
D:37
D:38
D:39
D:36
Actuator oper-
ation
Actuates the primary injector #1 five times at one-second intervals.
Illuminates the engine trouble warning light.
Checking
method
Check the operating sound of the primary injector #1 five times.
D:37
Actuator oper-
ation
Actuates the primary injector #2 five times at one-second intervals.
Illuminates the engine trouble warning light.
Checking
method
Check the operating sound of the primary injector #2 five times.
D:38
Actuator oper-
ation
Actuates the primary injector #3 five times at one-second intervals.
Illuminates the engine trouble warning light.
Checking
method
Check the operating sound of the primary injector #3 five times.
D:39
Actuator oper-
ation
Actuates the primary injector #4 five times at one-second intervals.
Illuminates the engine trouble warning light.
Checking
method
Check the operating sound of the primary injector #4 five times.
Item/components and
probable cause
Check or maintenance job
Sensor inspection proce-
dure
1 Locate the malfunction Check in the diagnostic mode
(Code No. 36, 37, 38, 39).
Refer to “CHECKING THE
FUEL INJECTORS” on page
8-144.
—
2 Connection of primary injec-
tor coupler
Check the connection of the
coupler is secure.
Remove the coupler, and
check each pin (for bending,
wear, or locking).
Poor connection → Connect
it securely, or repair/replace
the wire harness.
Start the engine and let it idle
for approximately 5 seconds,
and check the fault code indi-
cation.
No fault code indicated. →
Recovered.
Fault code indicated. →
Check the next step.
3 Primary injector malfunction Refer to “CHECKING THE
FUEL INJECTORS” on page
8-144.
Fuel injection inspection
method.
Start the engine and let it idle
for approximately 5 seconds,
and check the fault code indi-
cation.
No fault code indicated. →
Recovered.
Fault code indicated. →
Check the next step.
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