TROUBLESHOOTING
Troubleshooting by DTC Fault Codes
12/05
6LY3 Service Manual
13-49
© 2007 Yanmar Marine International
DTC Fault Code
Fault
Troubleshooting Procedure
1. Check the crank and cam speed with a YDT
and see if they are stable.
If they are not stable, check the speed sensor.
2. Check the performance of the timer device with
a YDT. Condition and procedure of YDT
operation:
• Engine condition: Running at low idle and gear
not engaged.
• YDT: Diagnostic Test
➝
Active Control
Check the MANUAL check box of the
Direct timer Position Control.
Click the DESIRED cell and change
valve.
(a) If the device remains in the retarded or
advanced position, check the wire harness
of the hydraulic timer solenoids and also
check the solenoid valve. (Replace the wire
harness or timer solenoids if something is
wrong.)
(b) If the injection timing is not changing, and
remains in same position (except at the
retarded and advanced positions), replace
the fuel injection pump (FIP) and the timer
device. May have some mechanical
problems within the injection timing device.
DTC / FMI
1. Condition, 2. Fault, 3. Time to Detect, 4. Display
Check Point
P0216/7
1. Engine running
2. Does not meet target value of the injection timer phase
3. 10 seconds
4. PWR REDUCTION, CHECK ENGINE on the TELEFLEX display
Timer device
speed sensor
Oil system
Timer solenoid (Adv / Ret)
Fail Mode
Engine cannot control the injection timer.
Injection timing will be fully retarded or may stick at fixed position.
Limited Operation
Maximum engine speed is limited to 1800 rpm.
Fail Release
No
Remarks
ECU would detect DTC of P1220 or P1225 if the injection timing control solenoid (timer solenoid) has a
problem with the wire harness. White smoke or black smoke may increase more than usual because of
failure mode of the injection timing control.
DTC / FMI
Probable Cause
P0216/7
1. Timer or hydraulic device
2. Timer mechanical problem
3. Oil volume (Leak flow > 0.2 kgf / mm
2
) (285 psi)
4. Check the oil pressure.
5. Check the timer electromagnetic valve.
6. Replace the timer electromagnetic valve.