Case IH 2219 (6153.04) - DEC – DEC: Synchro 2 Solenoid - short to GND

An electrical circuit failure where the electrical current intended for the Synchro 2 Solenoid is finding a premature path to the machine's chassis (ground), preventing the solenoid from operating.

• MAXXUM T4E
• Magnum series
• Magnum 210
• Magnum (180-240)
• Maxxum (110-145)
• Puma (130-240)
• Combines (5130-9250 series)

1. 1

   Locate the Synchro 2 Solenoid on the transmission housing and visually inspect the wiring harness for melt spots, chafing against the chassis, or corrosion.

2. 2

   Disconnect the solenoid and test the wiring harness with a multimeter to determine if the short to ground is in the wiring before the connector.

3. 3

   Test the internal resistance of the Synchro 2 Solenoid. If the resistance is near zero, the solenoid has an internal short.

4. 4

   If the wiring and solenoid test good, inspect the control module (DEC/TCU) for water damage or pin corrosion.

1. 1

   Power down the machine and disconnect the battery

   Power down the machine and disconnect the battery to protect the CAN bus network.

2. 2

   Clean the area around the Synchro 2 Solenoid

   Clean the area around the Synchro 2 Solenoid on the transmission to prevent dirt from entering the hydraulic system.

3. 3

   Disconnect the electrical connector

   Disconnect the electrical connector from the solenoid.

4. 4

   Repair the chafed wire

   If the diagnostic checks pointed to a wiring issue, repair the chafed wire and wrap it in protective loom.

5. 5

   Unbolt/unscrew the solenoid cartridge

   If the solenoid is internally shorted, unbolt/unscrew the solenoid cartridge from the valve body. (Use penetrant oil if the threads are stubborn to avoid damaging the housing).

6. 6

   Install the new solenoid

   Install the new solenoid with fresh O-rings (lubricated with clean hydraulic fluid).

7. 7

   Reconnect the electrical harness and the battery

   Reconnect the electrical harness and the battery.

8. 8

   Clear the stored fault codes

   Clear the stored fault codes using the machine's AFS Pro display or a CNH Electronic Service Tool (EST).