58130-ZW1-W63ZA Honda PROPELLER, THREE-BLADE (13X19) (Honda Code 8577637). *NH283* (AL) (STIN GRAY)

Electronic Controls
The 3508 EUI Engine Electronic Control Module (ECM) consists of two main components: the control computer and the Personality Module. The Personality Module is the software for the control computer and also stores operating maps that define horsepower and torque curves. The two work together [along with sensors to "see" and injectors (EUI) to "act"] to control the engine. Neither one can do anything by itself.
Figure 0.1 - Personality ModuleThe ECM determines a "desired engine speed" based on the throttle signal and certain diagnostic codes. The ECM maintains the desired engine speed by sensing actual engine speed using the Speed/Timing sensor, then deciding how much fuel to inject in order to achieve the desired engine speed.Fuel Injection
The ECM controls the amount of fuel injected by varying signals to the injectors. The injectors will inject fuel ONLY if the injector solenoid is energized. The ECM sends a 105 volt signal to the solenoid to energize it. By controlling the timing and duration of the 105 volt signal, the ECM can control injection timing and amount of fuel injected.The ECM sets certain limits on the amount of fuel that can be injected. "FRC Fuel Pos" is a limit based on Fuel-Air Ratio, for smoke control purposes. When the ECM senses a higher Turbo Compressor Outlet pressure (more air into cylinder), it increases the "FRC Fuel Pos" limit (allows more fuel into cylinder). "Rated Fuel Pos" is a limit based on the horsepower rating of the engine. It is similar to the rack stops and torque spring on a mechanically governed engine. It provides horsepower and torque curves for a specific engine family and rating. All of these limits are programmed by the factory into the Personality Module, and are not programmable in the field.Injection timing depends on engine speed, load, and other operation factors. The ECM knows where top center of cylinder number one is from the signal provided by the engine Speed/Timing sensor. It decides when injection should occur relative to top center and provides the signal to the injector at the desired time.Programmable Parameters
"System Configuration Parameters" that affect 3508 EUI Engine operation are set at the factory and may be changed with the Electronic Control Analyzer Programmer (ECAP). These parameters are stored in the ECM and an Audit trail is kept.Passwords
The System Configuration Parameter Full Load Setting (see SECTION 2) and most "Logged Events" are protected by "Factory" passwords. "Factory" passwords are calculated on a computer system available only to Caterpillar dealers. Section 2: Programming 3508 EUI Parameters has more details on when passwords are needed and how to obtain them.Self-Diagnostics
The 3508 EUI Engine has some ability to diagnose itself. When a problem is detected, a Diagnostic Code is generated and a warning appears on the VIMS display. In most cases, the code is also stored in permanent memory in the ECM.Current Diagnostic Codes are referred to as ACTIVE. They indicate that a problem of some kind currently exists. They should always be serviced first. Refer to Section 4: Troubleshooting With a Diagnostic Code for more details.Diagnostic Codes stored in memory are called LOGGED. The problem may have been temporary or may have been repaired since the time it was logged. Therefore, logged diagnostic codes don't necessarily mean something needs to be repaired. LOGGED diagnostic codes may be helpful indicators for intermittent problems. In addition, to diagnostic codes the ECM also records "events", that have occurred rather than failures. Refer to Section 4: Troubleshooting With a Diagnostic Code for more details.Harness Wire Identification
The present type of wire identification, used on all Caterpillar equipment uses only eleven solid colors. In addition to only eleven basic colors of wire, a circuit number is stamped (put) on each wire. The circuit number is stamped approximately every inch for the length of the wire. The identification number for a circuit will be the same for any Caterpillar equipment.For example: A color code of "A701-GY" on the schematic would mean, there is a gray wire with the circuit number "A701" stamped on it. This wire is the solenoid signal wire (power) for cylinder #1 (CYLINDER HEAD SOL 1) on the Electronic Unit Injector (EUI) system wire harness. The "A701-GY" color code will be the identification of "SOLENOID 1 POWER" circuit on all Caterpillar equipment wire harnesses with Electronic Unit Injector (EUI) systems.Another wire identification on the schematic is the size of the wire. The size or gauge of the wire is called "AWG". The gauge of the wire will follow the wire color.For example: A color code of "150-OR-14" on the schematic would indicate the "150-OR" wire is a 14 AWG wire.If the gauge of wire is not listed after the wire color, the gauge of the wire will be 16 AWG.3508 EUI Electronic System
Figure 0.2 - Fuel System 3508 EUI System Component Diagrams
5130 Excavator
Figure 0.3 - VIMS Dash Panel Display3508 EUI System/VIMS Display Functionality
VIMS receives from the ECM information on engine parameters and diagnostics over the CAT data link. This information can be viewed by the operator on the VIMS Message Display. You may be able to review some of the diagnostics reported by the 3508 EUI Electronic Control Module on the VIMS Message Display by entering the following commands into the VIMS Keypad:A. Show Acknowledged Events: Type in "EACK" (3225) on the VIMS Keypad. This will show only active events that have been acknowledged (snoozed) but not corrected by the operator.B. Show Event List Contents: Type in "ELIST" (35478) on the VIMS Keypad. This will show the event list in an abbreviated form. Event list entries are displayed on a last in - first out basis. Use the <BACKWARD> and <FORWARD> arrow keys to scroll through the list. The message "BOTTOM OF LIST" is shown when the first event in the list is reached.With either case pressing the <F1> key while a fault is displayed will show its MID, CID, and FMI on the second line of the VIMS Message Display. Refer to the VIMS Service Manual (SENR6059) for