Case IH 3773 – Engine Control Unit (ECU) / Engine Controller: Boost Pressure Below The Target - Check Waste Gate, Turbocharger, Piping

The engine control system has detected that the actual intake manifold boost pressure is lower than the target pressure commanded by the system. The underlying condition is typically a loss of charge air pressure due to a leak in the intake/exhaust piping, a stuck or damaged wastegate, or a failing turbocharger.

• Farmall
• skid steer
• SR220
• SR250
• SV250
• SV300
• TR320
• TV380
• 420
• 430
• 435
• 445
• Farmall 65A
• Farmall 65C
• Farmall 75A
• Farmall 75C
• Farmall 75N
• Farmall 85N
• Farmall 85A
• Farmall 85C
• Farmall 90N
• Farmall 90V
• Farmall 95A
• Farmall 95C
• Farmall 95U
• Farmall 105A
• Farmall 105C
• Farmall 105U
• Farmall 115A
• Farmall 115C
• Farmall 115U
• Luxxum 100
• Luxxum 110
• Luxxum 120
• Quantum series

1. 1

   Inspect all charge air piping, intercooler hoses, and clamps for leaks, cracks, or loose connections that could cause a loss of boost pressure

2. 2

   Check the turbocharger wastegate linkage and actuator for physical damage or binding

3. 3

   Inspect the boost pressure accumulator (integrated with the oil cooler assembly) to ensure it is intact and not leaking

4. 4

   Check the turbocharger for internal damage, excessive shaft play, or oil leaks

1. 1

   Resolve Leaks

   If any leaks are found in the intake or exhaust piping, replace the damaged hoses, pipes, or clamps.

2. 2

   Turbocharger / Wastegate Replacement

   If the wastegate or turbocharger is found to be faulty, do not attempt to adjust or modify the wastegate actuator in any way. The turbocharger assembly (which includes the pre-calibrated wastegate) must be replaced.

3. 3

   Remove the Old Turbocharger

   Disconnect the air intake hoses, exhaust connections, and oil feed/drain lines. Unbolt the turbocharger from the exhaust manifold.

4. 4

   Install the New Turbocharger

   Mount the new turbocharger using new gaskets. Reconnect all oil lines and air/exhaust piping securely.

5. 5

   Restore ECU Parameters

   Connect the Case IH Electronic Service Tool (EST) and perform the 'Procedure To Restore Self Learning Parameters' (also noted as 'Reset Parameters Via Service Tool After Replacement') to clear the fault and allow the Engine Controller to relearn the boost control parameters.