jcb G20 Operator's Manual page 145

Alarms
Symptom
Low oil pressure fault operates after engine has fired
High engine temperature fault operates after engine
has fired.
Shutdown fault operates
Electrical Trip fault operates
Warning fault operates
CAN ECU warningCAN ECU shutdown
CAN data fail
Incorrect reading on engine gauges
Fail to stop alarm when engine is at rest
Communications
Symptom
CAN data fail
Instruments
Symptom
Inaccurate generator measurements on controller
display
138
Table 69.
Possible Remedy
Check the engine oil pressure.
Check the oil pressure switch/sensor and wiring.
Check configured polarity (if applicable) is correct
(i.e. normally open or normally closed) or that sensor
is compatible with the module and is correctly config-
ured.
Check the engine temperature.
Check the switch/sensor and wiring.
Check configured polarity (if applicable) is correct
(i.e. normally open or normally closed) or that sensor
is compatible with the module.
Check the relevant switch and wiring of fault indicat-
ed on LCD (Liquid Crystal Display) display.
Check the configuration of input.
Check the relevant switch and wiring of fault indicat-
ed on LCD display.
Check the configuration of input.
Check the relevant switch and wiring of fault indicat-
ed on LCD display.
Check the configuration of input.
This indicates a fault condition detected by the en-
gine ECU and transmitted to the DSE controller.
Indicates failure of the CAN data link to the engine
ECU.
Check all wiring and termination resistors (if re-
quired).
Check the engine is operating correctly.
Check sensor and wiring paying particular attention
to the wiring to terminal 10 (refer to appendix).
Check that sensor is compatible with the module and
that the module configuration is suited to the sensor.
Table 70.
Possible Remedy
Indicates failure of the CAN data link to the engine
ECU.
Check all wiring and termination resistors (if re-
quired).
Table 71.
Possible Remedy
Check that the CT primary, CT secondary and VT ra-
tio settings are correct for the application.
9831/0650-3
Maintenance
Fault-Finding
138