7641h

CLAAS 7641h: TR2 (A57-2) Module 2: Engine speed sensor 1 of 2 disconnected

Issue description

The tractor's Powerboost function is limited to C and D during operation due to a disconnected Engine speed sensor 1 of 2. The system reverts to normal mode once the fault is resolved.

Check the cause

  1. Engine speed sensor 1 of 2 connection

  2. Wiring and harness related to Engine speed sensor 1 of 2

  3. Module 2 functionality

Repair steps

  1. Inspect

    Check the physical connection of Engine speed sensor 1 of 2 for looseness or disconnection.

  2. Test

    Verify the integrity of the wiring and harness connected to Engine speed sensor 1 of 2.

  3. Diagnose

    Use the service manual to test the functionality of Module 2 and confirm if it is operating correctly.

Parts you might need

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