Yanmar 6LY3 series Service Manual page 358

TROUBLESHOOTING
P1211/7 (Rack Actuator Mechanical Malfunction)
DTC P1211/7
Electrical Circuit Chart
See P1210/4 (Rack Actuator) on page 13-67 and Rack Position Sensor on page 13-83.
DTC Fault Code
DTC / FMI
1. Key switch ON
2. Abnormal acceleration of engine speed is caused by a rack actuator malfunction
P1211/7
3. 1 second
4. CHECK ENGINE on the TELEFLEX display
Engine stops because the rack position is set to the stop position.
Fail Mode
Turn off the rack actuator relay.
Limited Operation Engine stop
Fail Release No
Require key off to reset the fail mode
Remarks Turn the key OFF and ON again to reset the failure code.
FFD (Freeze Frame Data) is recorded and can be logged by the YDT.
Fault
DTC / FMI
P1211/7
Troubleshooting Procedure
1. Check the wire harness and connector at rack actuator and actuator relay.
2. Check the rack actuator lag performance. If at fault, replace fuel injection pump.
13-68
Rack Actuator Mechanical Malfunction
1. Condition, 2. Fault, 3. Time to Detect, 4. Display
1. Wire harness
2. Rack actuator, fuel injection pump
© 2007 Yanmar Marine International
Troubleshooting by DTC Fault Codes
Probable Cause
6LY3 Service Manual
Check Point
Rack actuator
Fuel injection pump
Wire harness