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Engine Monitoring Lamps
OEM
Description:
This parameter determines the lamp requirements for
the Engine Monitoring System. When programmed to
the Warning Lamp option, one lamp connected to J1/
P1:29, is used to indicate potentially damaging engine
conditions.
When programmed to Option 1 prior to 2007, up to three
discrete lamp outputs are available to indicate specifi c
engine problems. Option 1 confi gures J1/P1:29 for
connection of a Low Oil Pressure Warning Lamp, J1/
P1:31 for connection of a High Coolant Temperature
Warning Lamp. J1/P1:30 may used to connect a Low
Coolant Level Warning Lamp if the Coolant Level Sensor
is programmed to other “No”. If the Coolant Level
Sensor parameter is programmed to No, then J1/P1:30
can be used to connect a PTO Switch On Lamp.
For GMT530 trucks, this parameter may be programmed
to High Coolant Temp Warning Lamp. The optional
setting confi gures the ECM to provide an indication
when engine coolant temperature is abnormally
high. This circuit is used to interface the GM Vehicle
Shutdown System. When programmed to the High
Coolant Temp Warning Lamp setting, J1/P1:29 is not
available for use as a Warning Lamp for the Caterpillar
Engine Monitoring System.
Note: Prior to 2007, confi guring this parameter
accounted for Warning Lamp Confi g, Low Coolant Level,
High Coolant Temperature and Low Oil Pressure. For
EPA’07 and newer engines, these parameters have been
separated and require individual confi gurations.
Available:
All electronically controlled on-highway engines
covered in this handbook before EPA’07.
Range:
Engine Range Cat Default
pre 2007
3126E, GM
High coolant temp
Warning Lamp
Warning
lamp
pre 2007
3126E Other
C7/C9 GMT560
NA NA
pre 2007 C7/C9
GM530/540
High coolant temp
Warning Lamp
Warning
lamp
pre 2007 HD
C7/C9 Other
Option 1
Warning Lamp
Warning
Lamp
Engine Monitoring Lamps