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 MBE ELECTRONIC C ONTROLS APPLICATION AND INSTALLATION 

5.8 IDLE SHUTDOWN TIMER AND VSG SHUTDOWN

The Idle Shutdown Timer will shutdown the engine if it remains idling for a specified period of 

time. The options that can operate with Idle Shutdown Timer are Idle Shutdown Override, Vehicle

Power Shutdown or Shutdown on Variable Speed Governor (VSG).

5.8.1 OPERATION

Certain conditions must be met for the entire time-out period for shutdown to occur. These

conditions include:

Coolant temperature above 14 F (–10 C)

Engine operation at idle

The parking brake interlock digital input switched to battery ground

OEM supplied interlocks enabled

Ignition ON

Fueling is stopped after the specified idle time; the ignition circuit remains active after the engine

shuts down. The AWL will flash 20 seconds before the shutdown occurs. The RSL will flash 10

seconds before shutdown occurs. The AWL will blink until the ignition is turned off to indicate

shutdown has occurred. The ignition switch must be cycled to OFF (wait 10 seconds) and back to

ON before the engine will restart, if shutdown occurs.

All information subject to change without notice.   (Rev. 7/03)   5-637SA822 0307   Copyright © 2003 DETROIT DIESEL CORPORATION

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FEATURES 

A Park Brake Switch must be installed (see Figure 5-13). Idle Shutdown Timer operates with a

digital input configured as a park brake and switched to battery ground. The time can range from

1 to 1000 seconds (approximately 16 minutes).

Figure 5-13 Park Brake Digital Input

Idle Shutdown Override - Optional

Idle Shutdown Override allows the operator to override the idle shutdown to keep the engine

idling if this feature is enabled.

If the accelerator pedal has been pressed or the park brake has been released, the conditions for the

idle shutdown are no longer valid. The shutdown conditions must be met to reinitialize the counter.

The timer can be reset by one of the following conditions:

Engine Shutdown override button has been pressed

Clutch pedal has been pressed

Service brake has been pressed

5-64   All information subject to change without notice.  (Rev. 7/03)7SA822 0307   Copyright © 2003 DETROIT DIESEL CORPORATION

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 MBE ELECTRONIC C ONTROLS APPLICATION AND INSTALLATION 

Vehicle Power Shutdown - Optional

Vehicle Power Shutdown is used with Idle Timer Shutdown or Engine Protection Shutdown.

After the idle timer times out or engine protection shuts the engine down, the Vehicle Power

Shutdown relay shuts down the rest of the electrical power to the vehicle.

A Vehicle Power Shutdown relay can be installed to shutdown all electrical loads when the

engine is shutdown (see Figure 5-14). The engine will shutdown after the specified idle time and

will reset the relay (ignition circuit).

Figure 5-14 Vehicle Power Shutdown RelayAll electrical loads that should be turned OFF when the engine shuts down should be wired

through this relay.

Shutdown on VSG - Optional

This option, when enabled, allows the engine to be shutdown when operating on VSG when the

conditions are met for the Idle Timer Shutdown.

Maximum Engine Load Shutdown — Optional

This option, when enabled, allows the setting of a maximum load above which idle shutdown is

disabled.

All information subject to change without notice.   (Rev. 7/03)   5-657SA822 0307   Copyright © 2003 DETROIT DIESEL CORPORATION

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FEATURES 

5.8.2 PROGRAMMING REQUIREMENTS AND FLEXIBILITY

To program the Idle Shutdown timer, the digital input listed in Table 5-43 must be configured.

Description Pin Type   Setting Default   Parameter ID

Park Brake 21/16 Digital Input  0 = Disabled

1 = Enabled  1 1 13 07

Table 5-43 Idle Shutdown Timer Digital Input

The Idle Shutdown timer options listed in Table 5-44 can be programmed by VEPS or minidiag2.

Parameter Description   Choice / Range Default  Parameter

ID

IDLE SHUTDOWN

ENABLED

Enables or Disables the Idle

Shutdown feature.

0 = Disable

1 = Enable  0 1 02 01

IDLE SHUTDOWN TIME

(MIN)

The amount of engine idle time

that is allowed before the Idle

Shutdown feature stops fueling

the engine.

1 to 1000 seconds 60 sec 1 02 02

ENABLED VSG

SHUTDOWN

Enables or disables the Idle Timer

Shutdown feature when operating

on the Variable Speed Governor.

0 = Disable

1 = Enable  0 1 02 03

VSG SHUTDOWN TIME

The amount of engine idle time

that is allowed before the idle

shutdown feature stops fueling

the engine.

1 to 1000 seconds 60 sec 1 02 04

Time for AWL to flash  Time the AWL will flash before

the shutdown occurs  3–120 sec 20 sec 1 02 06

Time for RSL to flash  Time the RSL will flash before the

shutdown occurs  3–120 sec 10 sec 1 02 07

MIN COOLANT TEMP

FOR SHUTDOWN

Minimum coolant temperature

before an idle shutdown will occur  -40 C to 200 C -10 C   1 02 08

ENABLE IDLE/VSG

SHUTDOWN OVERRIDE

Enables/disables override of Idle

or VSG Shutdown

0 = Disable

1 = Enable  1 1 02 09

Table 5-44 Idle Shutdown Timer Programming Options

5-66   All information subject to change without notice.  (Rev. 7/03)7SA822 0307   Copyright © 2003 DETROIT DIESEL CORPORATION