CONTROL FUNCTIONS (CONT’D) Application Interface Outline (Cont’d) Starter motor start prevention When the key switch is turned on, the Eco-governor performs rack self-diagnostics before starting the engine in order to check the fuel injection pump rack operation. Starter motor staring prevention can be implemented by connecting a starter relay to the E-ECU. As shown in [Figure 10-40-27], the starter motor start prevention is done by connecting the E-ECU to the starter relay. The starter motor start prevention factor is checked by connecting the engine diagnosis tool to see the prevention factor flag [See "Logging function" on page 10-40-56]. In addition to rack self-diagnostics, the E-ECU has the following features: •
Safety relay (standard feature) This feature turns the starter off when the engine speed reaches 675 min-1, and disables the starter to start until the engine speed decreases to 325 min-1 or less. (This feature is the same as provided by 119802-77200 when the pulley ratio is 2).
Key switch
Figure 10-40-27
START position ON position OFF position E8 E7
Engine Speed
Self-diagnostics
ECU
ON OFF
Relay NO
Key SW
E20 S E45, E47
START
B Battery
Starting motor
Starter
Enable
Disable
•
Disable
Starter disable (optional feature) This feature turns off the starter when it is energized continuously for 30 seconds, and disables it to be energized for 30 seconds, thereby providing protection to the starter.
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E55W, E60, E80 Electronic Control System Manual
