FILM-IDENTIFICATION 2994836 - Caterpillar

Description
In this mode the technician can check the inputs (switches, potentiometer and sensors) to all modules without using additional testing equipment. When the technician operates any switch, sensor or potentiometer, the display area of the MPM will identify the input and indicate if the input is functioning. All inputs are assigned a unique four digit parameter ID number (P_ _ _ ). For a list of all the Mode 3 parameter ID numbers, see the table "Mode 3 Parameter Identification". When a switch or sensor is activated or deactivated (changes state) the following happens:
The alarm horn will emit an audible tone to indicate the switch and circuit are working.
A unique four digit parameter ID number (P_ _ _ ) that corresponds to the input being tested will automatically be shown on the readout (1).
The actual status of the input is shown on the readout (19). "Hi" means the voltage is high at the module input. Such as in a closed or working circuit switched to +12V. A pulsating audible tone will sound when "Hi" is shown. "Lo" means the sensor voltage is low at the module input. Such as in an open switch. A single audible tone will sound. For potentiometers, a two digit value "_ _" (0 to 99) is shown to indicate the percent of full scale.
When the sensor or switch is returned to its original position, the alarm horn will emit a different tone. Note: A specific parameter ID number (P _ _ _ ) can also be selected by the technician to be shown on the readout (1). See the following procedure. Note: If no change is noticed when a circuit is activated, an input fault is present. Troubleshoot that half of the circuit. Note: Ensure that all potentiometers have a smooth transition of digits throughout the range of values. Examples
Illustration 1 g00566476
Display shows that the downshift switch has been activated and is at +12V. (1) Readout (2) Digit Set key (3) Digit Select key (4) "Setup/Select" key (5) "Start/Stop/Reset" key (6) "Exit/Mode" key (19) ReadoutAfter Mode 3 is entered and the shift control lever is moved to the left (downshift), the technician should observe the following conditions:
The alarm horn will emit an audible tone. This means an input has changed state.
Readout (1) will show "P109". This identifies the downshift input as the input that has