Yanmar 6LY3 series Service Manual page 356

TROUBLESHOOTING
DTC Fault Code
DTC / FMI
1. Key switch ON
2. Rack position sensor logic failure (rack current - rack position response)
P1202/0, 1
3. 0.32 / 0.16 seconds
4. PWR REDUCTION, CHECK ENGINE on the TELEFLEX display
Engine keeps running with rack control failure code.
Injection timing is controlled in rack control failure mode.
Fail Mode
*Target rack position and actual rack position will be indicated as 0 by the YDT.
*Engine load is indicated 0% on the TELEFLEX display and on the YDT.
Limited Operation
Maximum engine speed is limited to 1800 rpm.
Fail Release No
White smoke or black smoke may increase more than usual because of a failure code of the injection
Remarks timing control. This DTC also can be detected by rack mechanical P1211/7 or rack actuator P1210/4
malfunction, so check the rack actuator performance as well.
Fault
DTC / FMI
1.
P1202/0, 1
2.
Troubleshooting Procedure
1. Check the wire harness and connector at the rack position sensor. Look for an open or a short circuit.
2. Check the rack actuator wire harness and the rack actuator relay.
13-66
1. Condition, 2. Fault, 3. Time to Detect, 4. Display
Rack position sensor wire harness open or short
Mechanical rack malfunction
© 2007 Yanmar Marine International
Troubleshooting by DTC Fault Codes
Probable Cause
6LY3 Service Manual
Check Point
Injection pump
Rack position sensor
Rack actuator
Wire harness