Electronic Control System ISM and QSM11 Engines – 019-080   Remote PTO Switch

A remote PTO switch is available for applications where PTO operation control is desired away from the operator controls.

The remote PTO switch circuit consists of wire No. 34 (input signal) and a switch common return.

Locate the desired on/off toggle switch.

Remove and tag the two connectors from the switch terminals.

Touch the multimeter probes to the terminals on the switch.

Turn the switch off and measure the resistance.

The multimeter mustshow an open circuit (100k ohms or more). If the circuit is notopen, the switch has failed. Replace the switch.

Refer to the OEM troubleshooting and repair manual for the replacement procedures.

Turn the switch ON and measure the resistance.

The multimeter mustshow a closed circuit (10 ohms or less). If the circuit is notclosed, the switch has failed. Replace the switch.

Refer to the OEM troubleshooting and repair manual for the replacement procedures.

If the resistance value is correct, the switch muststill 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. Turn the switch off and measure the resistance. The multimeter mustshow an open circuit (100k ohms or more). If the circuit is notopen, the switch has failed. Replace the switch. Refer to the OEM troubleshooting and repair manual for replacement procedures. If the switch passes all of the previous checks, the circuit mustbe 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.