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    Transmission Diagnostic Trouble Codes F343-F348

    Uploaded by

    Lupin Gonzalez
    This document provides troubleshooting information for transmission diagnostic trouble codes F343-F348 encountered on motor grader models 670C, 670CH, 672CH 770C, 770CH, 772CH. It lists each code, a description of the issue, possible causes, and solutions to check like verifying sensor connections and measurements, checking for wiring issues, and potentially replacing components like the transmission controller. Solutions range from checking sensor continuity to replacing the transmission controller or fuse.

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    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd

    Transmission Diagnostic Trouble Codes F343-F348

    Uploaded by

    Lupin Gonzalez
    727 views2 pages
    This document provides troubleshooting information for transmission diagnostic trouble codes F343-F348 encountered on motor grader models 670C, 670CH, 672CH 770C, 770CH, 772CH. It lists each code, a description of the issue, possible causes, and solutions to check like verifying sensor connections and measurements, checking for wiring issues, and potentially replacing components like the transmission controller. Solutions range from checking sensor continuity to replacing the transmission controller or fuse.

    Original Description:

    moto deere serie c, ch

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    This document provides troubleshooting information for transmission diagnostic trouble codes F343-F348 encountered on motor grader models 670C, 670CH, 672CH 770C, 770CH, 772CH. It lists each code, a description of the issue, possible causes, and solutions to check like verifying sensor connections and measurements, checking for wiring issues, and potentially replacing components like the transmission controller. Solutions range from checking sensor continuity to replacing the transmission controller or fuse.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    727 views2 pages

    Transmission Diagnostic Trouble Codes F343-F348

    Uploaded by

    Lupin Gonzalez
    This document provides troubleshooting information for transmission diagnostic trouble codes F343-F348 encountered on motor grader models 670C, 670CH, 672CH 770C, 770CH, 772CH. It lists each code, a description of the issue, possible causes, and solutions to check like verifying sensor connections and measurements, checking for wiring issues, and potentially replacing components like the transmission controller. Solutions range from checking sensor continuity to replacing the transmission controller or fuse.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    of 2

    Page 1 of 2

    tm1606 - 670C, 670CH, 672CH 770C, 770CH, 772CH Motor Graders


    Operationand Test
    Transmission Diagnostic Trouble Codes F343-F348

    Transmission Diagnostic Trouble Codes F343-F348

    Troubleshooting Tips F343-Miscellaneous Diagnostic Trouble Codes F348

    -: Diagnostic Trouble Codes F343-F348

    SERVICE TECH MANUAL MACHINE


    CODE DESCRIPTION POSSIBLE CAUSE OPERATION SOLUTION
    F343 Transmission Oil Transmission No Action Check Sensor to ensure that it is properly
    Store only Temperature Sensor or Temperature Sender seated. See B4 Transmission
    Circuit Problem unplugged. Temperature Sender in 9015-15
    Transmission Controller Circuit.
    Wires broken between Disconnect sensor and TCU. Measure for
    TCU and Transmission continuity from sensor line to TCU
    Temperature sensor. connector.
    X01 YEL Wire and R09
    BLK Wire.
    Pin J1-C3 and J1-D1 at
    TCU.
    TCU to Transmission Unplug Sensor and measure continuity
    Temperature sensor from sense wire to GND.
    shorted to ground.
    X01 YEL Wire.
    Pin J1-C3 and J1-D1 at
    TCU.
    Wires shorted to voltage Disconnect sensor and TCU. Measure for
    between TCU and voltage on sensor wire. Check harness
    Transmission sensor. for a short to battery voltage.
    X01 YEL Wire and R09
    BLK Wire.
    Pin J1-C3 and J1-D1 at
    TCU.

    F345 S6 Park/Not Neutral Eight Way connector Neutral Verify that the gear selector switch is wired as shown
    On Gear Position Switch on Shift handle wired Only in the wiring diagram. See Transmission Controller
    Occurrence Module. wrong; Circuit in 9015-10. System Functional Schematic.
    Request for an
    undefined shift being
    made.
    (A) W21 WHT/TCU
    J2-B1
    (B) Wire W17
    WHT/TCU J2-A2
    (C) Wire W18
    WHT/TCU J2-A3
    (D) Wire W19
    WHT/TCU J2-H3
    (E) Wire W20
    WHT/TCU J2-H2

    file:///C:/ProgramData/Service%20ADVISOR/Temp/tm1606_TXTX17864920471536.html 03/08/2021
    Page 2 of 2

    S6 Park/Not Neutral See S6 Park/Not Neutral Gear Position Switch Module


    Gear Position Switch check in 9015-15 Transmission Controller Circuit.
    Module

    F346 Controller Error Controller Error Neutral Only Replace TCU.


    On Occurrence

    F347 Controller Error Controller Error Neutral Only Replace TCU.


    On Occurrence

    F348 Transmission Output Transmission Output Fuse Neutral Replace Transmission Output Fuse
    On Power Low is open; Valve Driver Reset in
    Occurrence NOTE: This can occur Supply Voltage (J3-A1) neutral
    during power off of Too Low.
    machine on vehicles with
    (SN -567462).
    P11 RED Wire open or Disconnect the TCU and measure the
    shorted to ground. Pin J3- voltage on the TCU connector. If no voltage
    A1 at TCU. check for continuity to GND. Examine
    Harness for a wire open or shorted to GND.

    CED,TX17864,1056-19-19990303

    file:///C:/ProgramData/Service%20ADVISOR/Temp/tm1606_TXTX17864920471536.html 03/08/2021

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