Some parameters may not be available on all applications. If a parameter is not available, the ET service tool indicates that the parameter is unavailable when the parameter is selected.
Note: For more information on configuration parameters and diagnostic trouble codes, use the appropriate ET service tool and refer to the applicable Troubleshooting manual.
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| Illustration 1 | g06103672 |
| (1) Air shutoff | |
The air shutoff uses a moving plate to block inlet air to the aftercooler. The engine stops because of the restricted air supply to the combustion chamber. The air shutoff only actuates for the following conditions:
- The emergency stop button is pressed
- An over-speed shutdown occurs
- The ECM loses power
The air shutoff must be reset before the engine can be restarted.
To reset the air shutoff, turn the reset knob to the "OPEN" position.
Ensure that the air shutoff is reset.
Note: This feature can be enabled or disabled with Cat ET.
The Cold Cylinder Cutout feature provides the following benefits:
- Reduction of white smoke during cold starting
- Reduction of the duration of advanced timing (cold mode)
- Reduction of ether injection
The ECM automatically turns off one electronic unit injector at a time during the following occurrences:
- Cold start-up
- Extended time at low idle
The ECM monitors the change of the fuel rack to determine if a cylinder is firing. If the cylinder is firing, the ECM activates the electronic unit injector. If the cylinder is not firing, the electronic unit injector remains deactivated. This process reduces white smoke.
The following conditions must be met to activate the Cold Cylinder Cutout:
- The Cold Cylinder Cutout parameter is programmed to "ENABLE".
- The fuel rack is less than
13 mm (0.5 inch) . - The jacket water coolant temperature is less than
63 °C (145 °F) .
The Cold Cylinder Cutout strategy is activated under either of the following conditions:
- Ten seconds after the engine reaches the low idle rpm
- Three seconds after ether injection is completed
The following conditions will deactivate the Cold Cylinder Cutout:
- The Cold Cylinder Cutout parameter is programmed to "DISABLED".
- The jacket water coolant temperature is more than
70 °C (158 °F) . - A Cat ET is used for the cold cylinder cutout test.
- The ether injection system is used.
- The coolant temperature sensor has failed.
- The engine is operating at a certain rpm when the Cold Cylinder Cutout is activated. If the engine rpm then varies by more than 50 rpm, the feature is deactivated for 3 seconds. A new engine speed is established when the feature is reactivated.
- The engine is at low idle rpm for 10 seconds. If the engine speed is reduced by more than 50 rpm, the Cold Cylinder Cutout is deactivated for 30 seconds.
- If the fuel rack is greater than
13 mm (0.5 inch) , the Cold Cylinder Cutout is deactivated for one second.