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  • P0732 Gear Ratio Error In 2nd

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    Mopar1973Man

    P0732 GEAR RATIO ERROR IN 2ND

    When Monitored and Set Condition:

    When Monitored: The transmission gear ratio is monitored continuously while the transmission is in gear.
    Set Condition: If the ratio of the Input RPM to the Output RPM does not match the current gear ratio. This DTC
    can take up to five minutes of problem identification before illuminating the MIL.

    POSSIBLE CAUSES

    • RELATED DTC'S PRESENT
    • CHECK 2C AND UD CLUTCH
    • EXTRA #7 CHECK BALL IN POCKET OR PASSAGE
    • INTERNAL TRANSMISSION
    • TRANSMISSION SOLENOID/TRS ASSEMBLY
    • INTERMITTENT GEAR RATIO ERRORS
    • TEST

    DIAGNOSTIC PROCEDURE

    NOTE: Low fluid level can be the cause of many transmission problems. If the fluid level is low locate and repair the leak then check and adjust the fluid level. Refer to appropriate AUTOMATIC TRANSMISSION article.

    NOTE: Always perform diagnostics with a fully charged battery to avoid false symptoms.

    NOTE: Diagnose 1 Trip Failures as a fully matured DTC.

    NOTE: Verify flash level of Powertrain Controller. Some problems are corrected by software upgrades to the Transmission and Engine Systems.

    NOTE: Due to the integration of the Powertrain and Transmission control modules - if a controller flash is performed it is necessary to perform STANDARD PROCEDURE - TCM QUICK LEARN and the STANDARD PROCEDURE - DRIVE LEARN . Failure to do so may result in shift quality complaints.

    NOTE: Check for applicable TSB's that may apply.

    1. With the DRBIII(R), read the engine DTC's. Check and repair all Engine DTC's prior to performing Transmission symptom diagnostics. With the DRBIII(R), read Transmission DTC's. Record all DTC's and 1 Trip Failures. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. Repair as necessary. Perform the Shift Lever Position Test. If the test does not pass, refer to Symptom test for SYMPTOM: P0706-CHECK SHIFTER SIGNAL . For Gear Ratio DTC's, check and record all CVI's. Most DTC's set on start up but some must be set by driving the vehicle to ensure that all diagnostic monitors have run. Perform this procedure prior to Symptom diagnosis. Continue Go To 2
    2. With the DRBIII(R), check Transmission DTCs Are there any Loss of Prime, Speed Sensor, and/or Line Pressure DTCs present?
      Yes --> Refer to the Transmission Category and perform the appropriate symptom. If any of these DTCs are present, they may cause a Speed Ratio Error. Perform the test procedure for P0944-LOSS OF PRIME first if it is present. Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 .
      No --> Go To 3
    3. With the DRBIII(R), check Transmission DTCs Is the DTC P0845 and/or P0846 also present?
      Yes --> Replace the Transmission Solenoid/TRS Assembly. Refer to appropriate AUTOMATIC TRANSMISSION article. Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 .
      No --> Go To 4
    4. With the DRBIII(R), record the EATX DTC EVENT DATA for P0732. Does the EATX DTC EVENT DATA show a Input speed of 0?
      Yes --> Go To 5
      No --> Go To 6
    5. The conditions to set this DTC are not currently present. Check the gearshift linkage adjustment. Intermittent gear ratio DTCs can be set by problems in the Input and Output Speed Sensor circuits and/or Speed Sensor Ground circuit. Remove the Starter Relay.
      NOTE: Failure to remove the Starter Relay can cause a Transmission - No Response condition. Install Transmission Simulator, Miller tool # 8333.
      Wiggle wiring and connectors while checking for intermittent operation with the Transmission Simulator. Gear ratio DTCs can also be set under extreme temperature conditions, this is usually caused by an internal problem. Verify if the problem is only experienced under extreme hot or cold conditions. With the DRBIII(R), check the EATX DTC EVENT DATA to help identify the conditions in which the DTC was set. Were there any problems found?
      Yes --> Repair as necessary. Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 .
      No --> Test Complete.
    6. Remove the Valve Body and air check the 2C and UD clutches. Refer to appropriate AUTOMATIC TRANSMISSION article. Do the 2C and UD clutches pass the air test?
      Yes --> Go To 7
      No --> Repair internal transmission. Refer to appropriate AUTOMATIC TRANSMISSION article. Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 .
    7. Check the #7 Check Ball pocket and passage for an extra check ball. Is there an extra check ball in the #7 Check Ball pocket or passage?
      Yes --> Remove extra #7 Check Ball. Make sure the check ball to be used is not cut or damaged and repair as necessary. Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 .
      No --> Go To 8
    8. Repair internal transmission as necessary. Refer to the appropriate OVERHAUL article. If there are no possible causes remaining, view repair.

    Repair

    Repair internal transmission. Refer to appropriate AUTOMATIC TRANSMISSION article. Perform (NGC) 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1



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