SADDLE AS 4337014 - Caterpillar

Illustration 1 g00937961
(1) POWER - The LED is green. The LED is illuminated when voltage is supplied from the key start switch. (2) SYSTEM - The LED is green. The LED is illuminated when the internal 5 volt supply is working. (3) MODE - The LED is yellow. The LED will slowly flash when the program is running properly. (4) STATUS - The LED is red. The LED is illuminated when a diagnostic fault is detected. Refer to Table 1 for more information on diagnostics:
Table 1
Diagnostic LED (4) (1)    Potential Cause    Possible Remedy    
-!!!     5 volt power supply is out of tolerance.     Check the wiring.
Check the output voltage at the ECM.    
--!!     The signal from the position sensor (inching pedal) is incorrect.     Check the wiring.
Check the sensor.    
!!-!     No signal is detected from the speed sensor during start-up.     Check the wiring.
Check the sensor.    
-!-!     The circuit for one of the solenoids is open or shorted.     Check the wiring.
Check the solenoid.    
!--!     Short circuit in the position sensor (transmission control lever)     Check the wiring.    
---!     Speed sensor signal is incorrect.     Check the wiring.
Check the sensor.    
--!-     Incorrect hardware     Replace the ECM.    
----     A parameter is not set.     Replace the ECM.    
( 1 ) ! represents a short on-time. - represents a long on-time. ---- represents continuous on-time.