P1226/0: Spare Accelerator Sensor Error (Foot Pedal-Open Position) - Yanmar 3TNV82A Troubleshooting Manual

FAILURE DIAGNOSIS

(5) P1226/0: Spare Accelerator Sensor Error (foot pedal-open position)

DTC P1226/0
DTC Detecting Conditions
1 - Precondition; 2 - Detecting condition(s);
3 - Flashing pattern of failure indicator
1. Key switch ON.
2. With sensor voltage 1.1[V] and above, foot pedal Normally Open
switch detected being OFF or foot pedal Normally Closed
Switch detected being ON.
3. One flash followed by eight flashes
Movement at Error occurrence
Error Mode [Run As Is]:
The engine continues to run using the
main accelerator sensor.
Run restricted? No.
Recovery No.
Conditions
Remarks
Estimation of Failure cause/Error condition
• The connector may not be properly connected.
• Wiring defect of the harness
The wiring for the foot pedal Normally Open switch may be disconnected.
•
The wiring for the foot pedal Normally Closed switch may be short-circuited with GND.
•
• The foot pedal may be faulty.
The inner wiring may be disconnected or short-circuited with GND.
•
• The E-ECU internal circuitry may be faulty.
1-30
DTCs (Diagnostic Trouble Codes) General Description
Spare Accelerator Sensor Error (foot pedal-open
position)
Error detection of main accelerator sensor
Unavailable
Check points
Harness
Foot pedal
Available
[Run Under Restrictions]:
The engine runs at a constant rotational
speed.
Yes: The target speed is set to the "on-
error target speed (standard value:
1500[min -1 ])" or "pre-error target
speed".
No.
TNV DI Service Manual