Yanmar BY Series Service Manual page 274

After Troubleshooting or Repair
Code Fail
Sensor Supply
P0653
Monitoring 3
Glow Plug Control
P0670
Module
Glow System - Glow
P0671
Spark No. 1
Glow System - Glow
P0672
Spark No. 2
Glow System - Glow
P0673
Spark No. 3
Glow System - Glow
P0674
Spark No. 4
Glow System - Glow
P0675
Spark No. 5
Glow System - Glow
P0676
Spark No. 6
P0689 Main Relay
P0690 Main Relay
4BY - Injector Bank 1
P2049
6BY - Injector Bank 1
4BY - Injector Bank 2
P2052
6BY - Injector Bank 2
Atmospheric
P2227
Pressure
Atmospheric
P2228
Pressure
Atmospheric
P2229
Pressure
Camshaft Speed
P2614
Sensor
Crankshaft Speed
P2617
Sensor
U0001 CAN Throttle Signal
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.
AFTER TROUBLESHOOTING OR REPAIR
The engine control unit (ECU) may have generated
trouble codes due to the current fault or during
troubleshooting. Remember to check and clear any
trouble codes after repairs are complete.
BY Service Manual
Mode
Short circuit
Failure, short circuit, over-current
Not connected, short circuit
Not connected, short circuit
Not connected, short circuit
Not connected, short circuit
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
Manipulation error
TROUBLESHOOTING
Engine Check
Run or
Can Engine
Condition
Start Alarm
reduce yes
yes yes
yes yes
yes yes
yes yes
yes yes
yes yes
yes yes
no no
no no
no no
reduce no
reduce yes
reduce yes
yes yes
yes yes
yes yes
reduce yes
no no
idle yes
no no
alarm
alarm
alarm
alarm
alarm
alarm
alarm
alarm
alarm
alarm
alarm
alarm
alarm
alarm
alarm
alarm
alarm
alarm
alarm
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