MULTI-MODE MANUAL TRANSAXLE SYSTEM, Diagnostic DTC:P1875

DTC Code DTC Name
P1875 Buzzer Malfunction

DESCRIPTION

The buzzer inside the transmission control ECU sounds an alarm when the shift lever is moved into reverse or is mis-operated. This DTC is detected and output when power is not supplied to the buzzer built into the transmission control ECU.

Tech Tips

In addition, the buzzer sounds when one of the following conditions is met:


  • When the transmission control ECU performs the shift rejection to prevent engine overrev.

  • When the vehicle is stationary and the transmission control ECU operates the shift retry function.

  • When the transmission control ECU judges the clutch overheat.

DTC No. DTC Detection Conditions Trouble Areas
P1875

The transmission control ECU detects the following conditions simultaneously:

(1 trip detection logic)


  1. The buzzer does not sound

  2. The buzzer operation voltage is 3 V or less for 5.0 seconds

  • Transmission control ECU

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK BUZZER OPERATION


    1. Turn the ignition switch to ON.

    2. Shift the lever into reverse.

    3. Check the buzzer operation.

      OK
      The buzzer sounds.

    NG

    REPLACE TRANSMISSION CONTROL ECU ASSEMBLY

    OK

  2. CHECK OTHER DTC OUTPUT (IN ADDITION TO DTC P1875)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to ON and turn the tester ON.

    3. Select the following menu items: Powertrain / Multi-Mode M/T / DTC.

    4. Read DTCs.

      Result
      Display (DTC Output) Proceed To
      P1875 A
      P1875 and other DTCs B

      If any DTCs other than P1875 are output, troubleshoot those DTCs first.


    B

    GO TO DTC CHART

    A

    REPLACE TRANSMISSION CONTROL ECU ASSEMBLY