Yanmar BY Series Service Manual page 247

Trouble Codes
12/05
Code Part or System
Glow System - Glow Spark
P0675
No. 5
Glow System - Glow Spark
P0676
No. 6
P0689 Main Relay
P0690 Main Relay
4BY2 - Injector Bank 1
P2049
6BY2 - Injector Bank 1
4BY2 - Injector Bank 2
P2052
6BY2 - Injector Bank 2
P2227 Atmospheric Pressure
P2228 Atmospheric Pressure
P2229 Atmospheric Pressure
P2614 Camshaft Speed Sensor
P2617 Crankshaft Speed Sensor
U0001 CAN Throttle Signal
U0106 Glow Control Unit
U0426 Immobilizer
* Relative value is the value read on a pressure gauge attached to the intake pipe.
** Absolute is the value reported by the ECU and displayed at the helm digital display.
BY Service Manual
Mode
Not connected, short circuit
Not connected, short circuit
Power relay sense short circuit low
Power relay sense short circuit high
Short circuit on high side to Ground / B+
Short circuit on high side to Ground / B+
Short circuit on high side to Ground / B+
Short circuit on high side to Ground / B+
Plausibility check with BPS (boost pressure sensor)
fail
Short circuit low
Short circuit high
No connection / short circuit
No connection / short circuit
No signal
No communication error
Manipulation error
© 2009 Yanmar Marine International
TROUBLESHOOTING
Run Or Check
Engine
Conditi Engine
Can Start
on Alarm
yes yes alarm
yes yes alarm
no no alarm
no no alarm
no no
alarm
reduce no
reduce yes
alarm
reduce yes
yes yes alarm
yes yes alarm
yes yes alarm
reduce yes alarm
no no alarm
idle yes alarm
yes yes alarm
no no alarm
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