DOWEL-BUSHING 3E9412 - Caterpillar

"Diagnostic" Lamp
Use the "DIAGNOSTIC" Lamp or a Caterpillar electronic service tool to determine the diagnostic flash code.Use the following procedure to retrieve the diagnostic codes if the engine is equipped with a "DIAGNOSTIC" lamp:
Turn the ignition key to the ON position. The engine does not need to be started in order to view codes. The engine does not need to be running while the ignition switch is in the ON position. The "DIAGNOSTIC" lamp flashes on and off at five second intervals.
When the ignition key is in the ON position, the lamp is checked for proper operation. Active codes are displayed at this time. Code 34 will not be displayed.Note: The "DIAGNOSTIC" lamp will flash for five seconds. The lamp will flash if there is an active diagnostic code.
The diagnostic codes will always be flashed. There is no toggle switch that will shut off the lamp.
The "DIAGNOSTIC" lamp will flash in order to indicate a two-digit code. The sequence of flashes represents the system diagnostic message. Each digit of the two-digit code is determined by counting the number of flashes. The lamp flashes at a rate of two times per second. The lamp will pause for one second between digits. The lamp will pause for two seconds between codes. Table 1 indicates the potential effect on the engine performance with active flash codes. Table 1 also forms a list of Electronic diagnostic codes and descriptions.For further information or assistance for repairs, consult an authorized Caterpillar dealer.
Table 1
Diagnostic Flash Codes
Flash Code Description of Flash Code Effect On Engine Performance Suggested Action by the Operator
Engine Misfire Low Power Reduced Engine Speed Shut down the Engine(1) Service the engine immediately.(2) Schedule Service for the Engine.(3)
13 "Fuel Temperature Sensor Fault"(4) X
21 Sensor Supply Voltage is Shorted.(4) X X X
24 Engine Oil Pressure Sensor Fault(4) X
25 Inlet Manifold Pressure Sensor Fault(5) X X
27 Coolant Temperature Sensor Fault(4) X
28 "Check The Calibration of Throttle Position Sensor " X X
32 Throttle Position Sensor Fault X X
34 Engine Speed Sensor Fault X X X
35 Engine Overspeed Warning X X
36 Unexpected Engine Shutdown X
37 Fuel Pressure Sensor Fault X
38 "Inlet Air Manifold Temperature Sensor Fault"(4) X
42 Engine Timing Calibration is Required. X X
46 Low Engine Oil Pressure X X X X
51 Intermittent Battery Power to the ECM X X X X
53 ECM Fault X X X X
56 Check Programmable Parameters. X X X
58 Low Coolant Level Warning X X
59 Incorrect Engine Software X X X X
61 High Coolant Temperature X X X
62 Coolant Level Sensor Fault X
63 High Fuel Pressure X X X
64 "(High) Inlet Air