SUPPORT 3979955 - Caterpillar

Table 1
Actions of the operator Twin display Visible for the operator Explanation Cause Possible root cause
Turn the keyswitch "ON". LED lamp and System check All 5 LED light for 2 seconds Visually check whether all LED lamps are working. / /
One of the LED does not light. Broken LED Broken connection on circuit board /
Display stays dead. Problem with display or supply voltage Problem with power connections of display
Display is dead or display is broken. Broken fuse for display
Broken power or the ground connection wire numbers "1(+)" and "2 (GND)"of the display.
Broken circuit board
Display tries to retrieve data from the pump. No lights for "60"seconds after Check of the LED
"(200 second max)" Display still waiting for data from the pump. / /
Green LED within 60 seconds The light will indicate the selected mode "(light, medium or heavy duty)". / /
Yellow LED within 60 seconds Low level warning The minimum grease level in the reservoir is reached. The reservoir is almost empty.
The follower plate is not lowering properly or the follower plate is stuck.
PLEASE TRY FILLING THE RESERVOIR.
Warning or flashing yellow and red LED within 60 seconds The pump will shut off when the pump is empty. The system could not be pressurized with the combination of a low level in the reservoir and the first cycle. The empty reservoir can be easily fixed by filling the reservoir. When the follower rises above the minimum level the error is automatically reset.
Turn the keyswitch "ON". Display tries to retrieve data from the pump. Flashing red warning lamp within 60 seconds The pump will shut off when the maximum number of successive errors is exceeded "(10)". Pump control senses no pressure in the circuit. The error could be reset by pushing the test button at the base of the pump. The error indicates that the follower plate was stuck or that the pump has an air bubble at the entry. See the Troubleshooting problem list underneath this table.
No communication with pump
Note: When display is powered, the display will keep trying to communicate with the pump. When the communication with the pump has been completed the red light will go out and the green lamp will illuminate behind the correct mode. Problem with the power connections to pump Broken pump fuse
Broken power wire or broken wire for ground connection "pump connection pin 1 (+)" and "2 (GND)"
The line of communication has been interrupted. Broken wire "K" line
"wire nr 6" /
Wire between display and pump
Loose pin in display or the connector at the pump or a harness issue.
pin "nr 6" of connector to the pump
ProblemThe pump will stop pumping when the number of successive errors are exceeded. The standard is 10 times but this can be changed.Probable cause
The pump turned off because the pressure switch