CM2150 Electronic Control System – 019-333   Remote Accelerator Switch

The remote accelerator switch enables and disables the remote accelerator feature. When enabled, the remote accelerator feature allows an operator to control the fueling of the engine from a remote location. Often, the remote accelerator switch is located on a remote panel very close to the remote accelerator sensor.

If INSITE™ is available, monitor the switch for proper operation. If INSITE™ is not available, follow the troubleshooting procedures in this section.

Locate the remote accelerator switch. Remove and tag the two connectors from the terminals on the switch.

Touch the multimeter probes to the terminals on the switch.

Move the switch to the OFF position and measure the resistance. The multimeter must show an open circuit (100K ohms or more).

If the circuit is not open, the switch has failed. Refer to the OEM troubleshooting and repair manual for the replacement procedures.

Move the switch to the ON position and measure the resistance. The multimeter must show a closed circuit (10 ohms or less).

If the circuit is not closed, the switch has failed. Refer to the OEM troubleshooting and repair manual for replacement procedures.

If the resistance value is correct, the switch must still be checked for a short circuit to ground.

Touch one of the multimeter probes to one of the switch terminals. Touch the other probe to chassis ground. Move the switch to the ON position and measure the resistance. The multimeter must show an open circuit (100K ohms or more). If the circuit is not open, the switch has failed. Refer to the OEM troubleshooting and repair manual for replacement procedures.

If the switch passes all of the previous checks, the circuit must be checked for an open circuit, a short circuit to ground, a short circuit from pin to pin and a short circuit to an external voltage source.