Case IH 2234 (6157.03) - DEC – DEC (Drivetrain Electronic Control): Synchro 6 Solenoid - LSD short to high voltage

An electrical circuit failure where the network detects values outside expected limits (a short circuit), preventing the controller from properly operating the solenoid due to a voltage irregularity.

• MAXXUM T4E
• Maxxum
• Puma
• Magnum
• Optum
• Steiger

1. 1

   Visually inspect the end of the solenoid harness connector for oil, dirt, or grime that could negatively affect the connection.

2. 2

   Perform a resistance test using a digital multimeter set to Ohms (Ω) on the two prongs inside the solenoid valve. A good solenoid should read between 12 to 25 ohms. No reading or an extremely high reading indicates a bad solenoid.

3. 3

   Perform a bench/voltage test by applying battery voltage (approximately 12V) directly to the solenoid's prongs to see if it energizes (you should hear/see the internal valve move). Be careful not to cross the wires.

1. 1

   Locate solenoid

   Locate the specific Synchro 6 solenoid on the transmission valve body.

2. 2

   Disconnect wiring

   Disconnect the wiring harness connector from the solenoid.

3. 3

   Remove fastener

   Remove the single fastener holding the solenoid in place.

4. 4

   Remove solenoid

   Pull the solenoid out of the transmission body. Note: The solenoid is sealed with O-rings (typically three) to prevent transmission fluid leakage, so it may be a tight fit.

5. 5

   Install new solenoid

   Lubricate the O-rings on the new solenoid and press it into the transmission body.

6. 6

   Reassemble components

   Reinstall the fastener and reconnect the wiring harness.