Yamaha FZ09E Service Manual page 393

FUEL INJECTION SYSTEM
Fault code No.
33
Item
Cylinder-#1 ignition coil : open or short circuit detected in the
primary lead of the cyllnder-#1 Ignition coll.
6
Malfunction in ECU. Execute the diagnostic
mode. (Code No. 30)
No spark
~
Replace the
ECU.
Refer to " REPLACING THE
ECU (engine control unit)" on
page 8-93.
Fault code No. 34
Item
Cylinder-#2 ignition coil : open or short circuit detected in the
primary lead of the cylinder-#2 ignition coil .
Fail-safe system
Able to start engine (depending on the number of faulty cylinders)
Able to drive vehicle (depending on the number of faulty cylinders)
Diagnostic code No. 31
Actuation
Actuates the cylinder-#2 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 Probable cause of Maintenance job Confirmation of service
malfunction and check completion
1 Connection of cylinder-#2 Improperly connected ~ Start the engine and let it idle
ignition coil coupler. Connect the coupler securely for approximately 5 seconds.
Check the locking condition or replace the wire harness. Fault code number is not dis-
of the coupler. played ~ Service is finished.
Disconnect the coupler and Fault code number is dis-
check the pins (bent or bro- played
~
Go to item 2.
ken terminals and locking
condition of the pins).
2 Connection of wire harness Improperly connected
~
Start the engine and let it idle
ECU coupler. Connect the coupler securely for approximately 5 seconds.
Check the locking condition or replace the wire harness. Fault code number is not dis-
of the coupler.
played
~
Service is finished.
Disconnect the coupler and Fault code number is dis-
check the pins (bent or bro- played
~
Go to item 3.
ken terminals and locking
condition of the pins).
3 Wire harness continuity. Open or short circuit
~
Start the engine and let it idle
Replace the wire harness. for approximately 5 seconds.
Between cylinder-#2 ignition Fault code number is not dis-
coil coupler and ECU cou-
played
~
Service is finished.
pier. Fault code number is dis-
gray/red-gray/red played
~
Go to item 4.
8-58