Case IH 2157 (519171.04) - DEC – Transmission Control Unit (TCU): Synchro 5-7 Position Sensor - open circuit or short circuit to GND
Issue description
The signal wire from the Synchro 5-7 Position Sensor is either broken, disconnected (open circuit), or touching a ground source (short circuit to ground). This electrical failure prevents the control module from reading the position of the 5th and 7th gear synchronizer.
Applies to these machines
1 machine- MAXXUM T4E
Check the cause
Clear the fault codes from the ECU to see if the code is active or stored.
Inspect the wiring harness leading to the Synchro 5-7 Position Sensor for chafing, pinched wires, or disconnected plugs.
Test the sensor circuit for continuity and ensure there is no continuity to ground on the signal wire.
Parts you might need
(5)Transmission Synchronizer Position Sensor
Generic part name; specific OEM part number not found
Sensor Spool Position
84386295Related Case IH Position Sensor (for reference); Fits New Holland & Case IH
Axle Position Sensor
429690A1Related Case IH Position Sensor (for reference); Manufactured by Dana for Case IH
Rotary Position Sensor
87368468Related Case IH Position Sensor (for reference); Fits Case IH Combines
Position Sensor
87605247Related Case IH Position Sensor (for reference); Fits Case IH Maxxum and MXM series
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