Yamaha VMAX 2009 Service Manual page 486

Fault code No.
Item
2 Open or short circuit in wire harness
and/or ignition coil sub-wire harness 1.
3 Defective cylinder-#1 ignition coil.
Reinstatement method
Fault code No.
Item
Fail-safe system
Diagnostic code No.
Actuator operation
Checking method
Probable cause of malfunction
1 Connections
• Cylinder-#2 ignition coil coupler
• Wire harness ECU coupler
• Ignition coil sub-wire harness 2 coupler
• Right handlebar switch coupler
33
Cylinder-#1 ignition coil: open or short circuit detected in the
primary lead of the cylinder-#1 ignition coil.
• Repair or replace if there is an open or short
circuit.
• Between cylinder-#1 ignition coil coupler and
ignition coil sub-wire harness 1 coupler.
(black/orange–black/orange)
(white–white)
• Between ignition coil sub-wire harness 1 cou-
pler and ECU coupler.
(orange–orange)
• Between ignition coil sub-wire harness 1 cou-
pler and right handlebar switch coupler.
(red/blue–red/blue)
• Execute the diagnostic mode. (Code No. D:30)
• Test the primary and secondary coils for conti-
nuity.
• Replace if defective.
Refer to "CHECKING THE IGNITION COILS"
on page 8-139.
Starting the engine and operating it at idle.
34
Cylinder-#2 ignition coil: open or short circuit detected in the
primary lead of the cylinder-#2 ignition coil.
Able to start engine (depending on the number of faulty cylinders)
Able to drive vehicle (depending on the number of faulty cylinders)
D:31
Actuates the cylinder-#2 ignition coil five times at one-second in-
tervals.
Illuminates the engine trouble warning light.
Check the spark five times.
• Connect an ignition checker.
• Check the coupler for any pins that may be
pulled out.
• Check the locking condition of the coupler.
• If there is a malfunction, repair it and connect
the coupler securely.
8-53
FUEL INJECTION SYSTEM
Check or maintenance job