TROUBLESHOOTING
Troubleshooting by DTC Fault Codes
12/05
6LY3 Service Manual
13-55
© 2007 Yanmar Marine International
P0335/0 (Cam / Crank Speed Incompatibility)
DTC Fault Code
Fault
Troubleshooting Procedure
1. Check the crank and cam speed if they are stable with a YDT.
If it is not stable, check the wire harness sensor, attachment and contaminants of the sensor core.
2. Check the status of flywheel sensor detection hole.
DTC P0335/0 Cam / Crank Speed Incompatibility
DTC / FMI 1. Condition, 2. Fault, 3. Time to Detect, 4. Display Check Point
P0335/0
1. Engine running
2. Difference between the cam and crank speed is more than 50 rpm
3. 0.5 seconds
4. PWR REDUCTION, CHECK ENGINE on the TELEFLEX display
Wire harness
Crank speed sensor
Cam speed sensor
Fail Mode
Engine will keep controlling the engine speed with the cam signal.
(ECU uses crank speed as normal condition.)
Engine cannot control the injection timer and have the failure code of the injection timer control
with the injection timing fully retarded.
Limited Operation Maximum engine speed is limited to 1800 rpm.
Fail Release
Yes
When the difference between cam and crank speed is within 15 rpm
Limited Operation Release
Yes
After failure is cleared and also when the throttle position is at low idle position
Remarks
White smoke or black smoke may increase more than usual because of the failure mode of the
injection timing control.
DTC / FMI Probable Cause
P0335/0
1. Crank and cam speed sensor
(contaminants, wire harness, poor connection of connector, attachment)
2. Bad flywheel sensor
3. Electrical noise
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