Specifications

1 SPN:100 EngOil Press

2 SPN:102 Boost Press

3 SPN:105 Intake Temp

4 SPN:110 EngCool Temp

5 SPN:175 EngOil Temp

6 SPN:629 Controller #1

7 SPN:636 PositionSensor

8 SPN:637 TimingSensor

9 SPN:651 InjectorCyl#1

10 SPN:652 InjectorCyl#2

11 SPN:653 InjectorCyl#3

12 SPN:654 InjectorCyl#4

13 SPN:655 InjectorCyl#5

14 SPN:656 InjectorCyl#6

15 SPN:677 EngStartRelay

16 SPN:1485 ECU MainRelay

Following ECU messages are displayed with the description:

28 Vgen unbal SD NO

The generator voltage is unbalanced more than the value of

Volt unbal

setpoint.

29 Wrn ECU Alarm WRN NO

ECU alarm list is not empty.

30 Wrn RA15 fail WRN NO

Warning alarm in case of lost connection to IGL-RA15 module.

31 WrnServiceTime WRN NO

The period for servicing is set by the

NextServTime

setpoint.

The protection comes active if the running hours of the engine

reach this value.

JOHN DEERE ECU INFORMATION DISPLAYS AND FUNCTIONS

This unit has a John Deere Electronic Engine Control Unit (ECU) which regulates the engine speed (RPM) and

constantly monitors vital engine functions for a number of operation, alarm and fault conditions. When an opera-

tion, alarm or fault condition occurs, the Liquid Crystal Display (LCD) window will alert the operator either visually

or audibly. In addition to the “Alarm List”, there is an “ECU Alarm List” which will list any faults specified by the

John Deere ECU.

Press the “S” Scroll-Up button (on the diagnostic keypad) to view the “ECU Alarm List”. This will allow the

operator to view a description of the fault, along with the diagnostic trouble codes located at the bottom of the

display (see FIGURE 1). To further identify a fault by using these codes, refer to the John Deere Operators

Manual supplied with the unit. To resume operation, the fault condition must be resolved and the code cleared

from the display.

Diagnostic messages are read and displayed in the ECU Alarm List. The Suspect Parameter Number (SPN),

Failure Mode Identifier (FMI) and Occurrence Counter (OC) are shown together with a description if possible.

One SPN /FMI describes one fail information. If FMI is equal to 0 or 1, WRN is displayed in the ECU Alarm list.

For any other FMI value FLS is displayed. Detailed SPM/FMI may been seen in SAE HS-1939 Publication, or

refer to engine manufacturers ECU error codes list.