019-009   Clutch Pedal Position Switch

General Information

TOC

The clutch pedal position switch circuit is used to disable the PTO and cruise control features.

The circuit consists of an open control switch, a clutch pedal position switch signal wire, and a switch return. When the clutch pedal position switch is installed and adjusted, the contact points are held closed. When the clutch pedal is depressed, the clutch pedal position switch is in its normally open position. This will disable the PTO or cruise control operation.

 
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Resistance Check

TOC

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

Find the clutch pedal position switch. The location will depend on the OEM installation procedures.

Disconnect the wiring harness attached to the switch terminals.

Adjust the multimeter to measure resistance.

Touch the probes of a multimeter to the two terminals in the connector of the clutch pedal position switch.

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Release the clutch pedal. The multimeter must show a closed circuit (10 ohms or less).

If the switch is not closed when the clutch is fully engaged, adjust the clutch switch trip lever. If the switch is not closed after adjusting the trip lever, the switch has failed. Refer to the OEM troubleshooting and repair manual for the replacement procedures.

Depress the clutch pedal. The clutch pedal position switch must open. The multimeter must show an open circuit (100k ohms or more).

If the switch is not open when the clutch is fully engaged, adjust the clutch switch trip lever. If the switch is not open after adjusting the trip lever, the switch has failed. Refer to the OEM troubleshooting and repair manual for the replacement procedures.

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Check for Short Circuit to Ground

TOC

Remove one multimeter probe from the clutch pedal position switch connector and touch the probe to the chassis ground. The multimeter must show an open circuit (100k ohms or more) when the clutch pedal is released. If the circuit is closed, replace the clutch pedal position switch.

Refer to the OEM troubleshooting and repair manual.

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Check for Short Circuit to External Voltage Source

TOC

Turn the keyswitch to the ON position.

Adjust the multimeter to measure VDC.

Insert one of the multimeter probes into the clutch pedal position switch connector.

Touch the other multimeter probe to the engine block ground and measure the voltage. The voltage must be 1.5 VDC or less with the clutch pedal released and depressed.

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If the voltage value is more than 1.5 VDC, there is a short circuit to an external voltage source.

NOTE: An external voltage source is any wire in the OEM harness wiring that carries the voltage.

Remove the external voltage source.

If the clutch pedal position switch passed all previous checks, connect the switch to the wiring harness. The clutch pedal position switch circuit must be checked.

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Last Modified:  03-Apr-2003

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