FUEL INJECTION SYSTEM
8-77
Fault code No. 40
Symptom Open or short circuit of secondary 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:40
D:41
D:42
D:43
D:40
Actuator oper-
ation
Actuates the secondary injector #1 five times at one-second inter-
vals.
Illuminates the engine trouble warning light.
Checking
method
Check the operating sound of the secondary injector #1 five times.
D:41
Actuator oper-
ation
Actuates the secondary injector #2 five times at one-second inter-
vals.
Illuminates the engine trouble warning light.
Checking
method
Check the operating sound of the secondary injector #2 five times.
D:42
Actuator oper-
ation
Actuates the secondary injector #3 five times at one-second inter-
vals.
Illuminates the engine trouble warning light.
Checking
method
Check the operating sound of the secondary injector #3 five times.
D:43
Actuator oper-
ation
Actuates the secondary injector #4 five times at one-second inter-
vals.
Illuminates the engine trouble warning light.
Checking
method
Check the operating sound of the secondary 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. 40, 41, 42, 43).
Refer to “CHECKING THE
FUEL INJECTORS” on page
8-144.
—
2 Connection of secondary
injector 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.
Check the injector’s operating
noise by the diagnostic mode
(Code No.40–43).
Injector’s operating noise →
Reset with the diagnostic
code 63. Recovered.
No injector’s operating noise
→ Check the next step.
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