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5103922 Deck Shutdown Module Functions and Diagnostic Troubleshooting

 

Product Affected

IS2500Z, IS2600Z, S175X, IS5100Z

 

Description

The deck shutdown module is designed to shut the PTO off if the unit senses a loss of engine oil pressure or overheats beyond a certain temperature. The red warning lights on the operators dash will illuminate and the PTO will shut down. The Deck Shutdown Module has 3 red LED lights on it that will illuminate to indicate a failure and help determine a root cause for the shutdown of PTO function.

 

Module LED's

All LED's on during visual check of warning lamp (See #4 Below)

Fault LED Lights - Low Oil Pressure +/- Coolant Temperature Switches Grounded

(H) LED - Hydraulic (Not used on our units)

(C) LED - Coolant Temperature

(O) LED - Oil Pressure

 

Prerequisites

Digital Multi Meter

 

Symptoms

Units PTO shuts down during operation or PTO will not turn on when the engine is running.

 

Cause

1. Deck shutdown module is being grounded at the green or brown wire telling the module to turn the PTO off.

2. Engine has ran low on oil or is losing oil pressure.

3. Oil pressure switch is faulty.

4. Engine is overheating, fan belt loose, radiator or radiator screen clogged.

5. Coolant temperature switch is faulty.

6. Deck Shut down Module is faulty

 

Resolution

1. Verify which Red LED light on the module is illuminating when the PTO will not turn on. Unplug one sensor on the engine at a time and do not let touch ground, test PTO.

2. Check engine oil and fill to proper oil level if found to be low.

3. Use link below to test oil pressure switch and replace if necessary.

4. Check engine temperature, clean radiator screen from any debris, check/fill for proper coolant level and check fan belt for proper tension

5. Use link below to test temperature switch and replace if necessary.

6. Replace deck shutdown module

 

Confirmation

Start unit and put into operational mode, engage PTO to confirm blades turn on and operate as normal. 

Keywords: 2500, 2600, 175, 5100, IS2500, IS2600, S175, IS5100, Electrical, Module, Deck, Shutdown, PTO