Service and Repair Manual August 2021
Diagnostics
178 GS
â„¢
-30m • 32m • 30 • 32 • 46 • 55 Part No. 1309020GT
GCON I/O Map - Models without outriggers
Pin number Circuit function I/O Type Wire color
J1 – Grey
J1-01 Power, ECM Power Input Red
J1-02 Power, PCON Power Output Red
J1-03 Emergency stop, PCON Power Input White
J1-04 CAN High, PCON Data Bus Yellow
J1-05 CAN Low, PCON Data Bus Green
J1-06 Ground, PCON Ground Output Brown
J1-07 Ground, ECM Ground Input Brown
J1-08 Key switch, PCON Digital Input Black
J1-09 Key switch, GCON Digital Input White
J1-10 Emergency stop, GCON Digital Input White / Black
J1-11 Contact Alarm - Models with hydraulic drive Digital Input Black
J1-12 Power, ECM Driver Power Input Red
J2 – Black
J2-01 Platform up coil Digital Output Orange
J2-02 Platform down coil - Models with electric drive Digital Output Orange / Black
J2-03 Steer left coil Digital Output Blue / Black
J2-04 Steer right coil Digital Output Blue
J2-05 Not used --- ---
J2-06 Drive forward coil - Models with hydraulic drive Digital Output White
J2-07 Not used --- ---
J2-08 Motor controller enable Digital Output Green / White
J2-09 Not used --- ---
J2-10 Drive reverse coil - Models with hydraulic drive Digital Output White / Black
J2-11 Motor controller throttle - Models with hydraulic drive Analog Output Green
J2-12 Not used --- ---
J3 – Green
J3-01 Flashing beacon, PWM Digital Output Red / Black
J3-02 Alarm, GCON Digital Output Blue
J3-03 Sensor power Digital Output Red
J3-04 Automotive horn Digital Output White
J3-05 Pothole limit switch - Models with electric drive Digital Input Orange / Red
J3-06 Ground Ground Input Brown
J3-07 Down limit switch Digital Input Orange
J3-08 Brake release - Models with electric drive Digital Input White / Red
J3-09 Pressure transducer Ground Input Blue / White
J3-10 Platform height sensor Ground Input Orange / White
J3-11 Not used --- ---
J3-12 Sensor ground Ground Input Black
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