Yanmar 6LY3 series Service Manual page 329

Troubleshooting by DTC Fault Codes
12/05
DTC Fault Code
DTC / FMI
1. Key switch ON
2. Input signal voltage is above 4.8V
P0180/3
3. 0.5 seconds
4. CHECK ENGINE on the TELEFLEX display
1. Key switch ON
2. Input signal voltage is below 0.2V
P0180/4
3. 0.5 seconds
4. CHECK ENGINE on the TELEFLEX display
Fail Mode
Fail Release
Limited Operation
Remarks
Fault
DTC / FMI
1. Open circuit of the wire harness or short to high voltage over 5V
P0180/3 2. Sensor failure
3. ECU failure
1. Wire harness short to ground
P0180/4 2. Sensor failure
3. ECU failure
Troubleshooting Procedure
See Troubleshooting the Temperature Sensor on page 13-40.
6LY3 Service Manual
1. Condition, 2. Fault, 3. Time to Detect, 4. Display
Engine takes the following fuel temperature as a default:
50°C (122°F)
*Above value can be monitored with a YDT.
(Diagnostic Test › Analog Input.)
Yes
When the input signal voltage goes to normal range (0.2 - 4.8V) for 0.5 seconds
No limited operation
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© 2007 Yanmar Marine International
Probable Cause
TROUBLESHOOTING
Check Point
Wire harness
sensor
Wire harness
sensor
13-39