AUTOMATIC TRANSMISSION SYSTEM, Diagnostic DTC:P0872

DTC Code DTC Name
P0872 Transmission Fluid Pressure Sensor / Switch "C" Circuit Low

DESCRIPTION

The oil pressure switch, which is built into the valve body, detects the fluid pressure of the SL1 fluid pressure circuit.

DTC No.

DTC Detection Condition


  1. Diagnosis Condition

  2. Malfunction Status

  3. Malfunction Time

  4. Other

 Trouble Area
P0872

  1. ECT is 40°C (104°F) or more, ATF temperature is -10°C (14°F) or more, and vehicle is driven with shift lever on D (no malfunctions are detected in shift solenoid valve SL1, 2, 3, 4 and 5, SR, speed sensor (NT, NC3, SP2), water temperature sensor, oil temperature sensor, knock control sensor, electronic throttle, or CAN2)

  2. When actual gear is in 1st to 5th gear, oil pressure switch is OFF

  3. Malfunction status occurs 2 times (1 trip)

  4. 2 trip detection logic

  • Oil pressure switch

  • Transmission wire

  • Harness and connector

  • TCM

WIRING DIAGRAM

A001FW4E06
*1 Oil Pressure Switch
*2 Transmission Wire

PROCEDURE


  1. READ VALUE USING DATA LIST (TPS 1 SWITCH SIGNAL)


    1. A001FL4E02
      *1 TCM Connector

      Connect terminals TPS1 and E1 of the E5 and E6 TCM connectors.

      Tech Tips

      Before checking, do visual and contact pressure checks on the TCM connector.

    2. Connect the intelligent tester to the DLC3.

    3. Turn the engine switch on (IG) and push the intelligent tester ON.

    4. Enter the following menus: Powertrain / ECT / Data List.

    5. Read the value displayed on the tester.

      Result
      Tester Display Proceed to
      TPS 1 Switch OFF A
      TPS 1 Switch ON B

    B

    CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - TCM) Click here

    A

  2. REPLACE TCM


    1. Replace the TCM Click here.


    NEXT

    PERFORM AT REGISTRATION Click here

  3. CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - TCM)


    1. Disconnect the E50 transmission wire connector.

      A001EXJE07
      *1 Front view of wire harness connector: (to Transmission Wire)
      *2 TCM Connector

    2. Disconnect the E6 TCM connector.

    3. Measure the resistance of the wire harness side connectors.

      Standard resistance
      Tester Connection Condition Specified Condition
      E50-17 (TPS1) - E6-25 (TPS1) Always Below 1 Ω
      E50-17 (TPS1) or E6-25 (TPS1) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. INSPECT TRANSMISSION WIRE (OIL PRESSURE SWITCH)


    1. A001BPBE01
      *1 Front view of wire harness connector: (to Oil Pressure Switch Connector)
      *2 Connector
      *3 Component without harness connected: (Transmission Wire)

      Disconnect the oil pressure switch connector.

    2. Disconnect the E50 transmission wire connector.

    3. Measure the resistance of the transmission wire.

      Standard resistance
      Tester Connection Condition Specified Condition
      Oil pressure switch connector - 17 (TPS1) Always Below 1 Ω
      Oil pressure switch connector or 17 (TPS1) - Body ground Always 10 kΩ or higher

    OK

    REPLACE OIL PRESSURE SWITCH Click here

    NG

    REPAIR OR REPLACE TRANSMISSION WIRE Click here