Hyundai Yanmar TNV Series Manual page 77

CONTROL SYSTEM
No. Item
7 Backup speed Engine start signal
sensor failure (E8) is on, but the
engine speed is
zero.
Engine speed
decreases by 480
min
ms.
8 CAN communica- CAN communica-
tion failure tion packets cannot
be received.
9 EGR valve failure Low status is
detected even
through port is off.
High status is
detected even
through port is on.
10 CSD solenoid valve High status is
failure detected even
through port is off.
Low status is
detected even
through port is on.
11 Air heater relay High status is
failure detected even
through port is off.
Low status is
detected even
through port is on.
12 Main relay failure Power is not shut off
even though main
relay is off.
13 Rack actuator relay Low status is
failure detected even
through port is off.
High status is
detected even
through port is on.
14 Backup accelerator Sensor voltage is
sensor failure 4.6 V or more, or
0.2 V or less.
15 Atmospheric pres-
sure sensor failure
16 Oil pressure switch Oil pressure switch
failure fails to turn on when
engine is off.
17 Charge switch Charge switch fails
failure to turn on when
engine is off.
18 Power supply volt- E-ECU supply volt-
age abnormal age exceeds 10.0 V.
E-ECU supply volt-
age exceeds 16.0 V.
2-58
Table 2-12 Diagnostic list
Failure detection
Operation when failure occurs
conditions
Engine continues to run while main speed
sensor is used.
Backup speed sensor failed: Engine stops.
-1
or more in 40
Last value is retained. Backup sensor
becomes active.
Engine runs with limited output(92%) and
speed(1800min
Engine continues to run with port being off.
Engine runs with air heater relay being off.
Engine runs normally.
Engine stops.
Engine continues to run while main acceler-
ator sensor is used.
Main accelerator sensor failure: Engine runs
at 1500 min
Atmospheric pressure compensation is
canceled.
Engine runs normally.(Option can change)
Engine runs normally.
Engine runs normally.
-1
).
-1
.(Option can change)
TNV Application Manual
Action/
condition for Category
recovery
Turn key off. Default to
disable
Correct failure. Default to
enable
Turn key off. Default to
disable
Turn key off. Always
enable
Turn key off. Default to
enable
Correct fail- Default to
ure.Or turn key disable
off.
Turn key off. Always
enable
Correct failure. Default to
enable
Turn key off. Default to
enable
Turn key off. Default to
enable
Turn key off. Default to
enable
Correct failure. Always
enable
Number
of
flashes
1-1
1-2
1-3
1-4
1-5
1-6
1-7
1-8
1-9
2-1
2-2
2-3