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 Code

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 in D (no malfunctions are detected in shift solenoid valve SL1, 2, 3, 4 and 5, SR, speed sensors (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

A015ZIYE04

INSPECTION PROCEDURE

PROCEDURE


  1. READ VALUE USING INTELLIGENT TESTER (TPS 1 SW SIGNAL)


    1. A015Z2ZE04

      Connect terminals TPS1 and E1 of the TCM connectors.

      Tech Tips

      Before checking, perform visual and contact pressure checks on the TCM connectors.

    2. Connect the intelligent tester to the DLC3.

    3. Turn the engine switch on (IG).

    4. Turn the intelligent tester on.

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

    6. Read the value displayed on the intelligent tester.

      Standard
      Tester Display Condition
      TPS 1 Switch ON Gear is 1st to 5th
      TPS 1 Switch OFF Gear is 6th to 8th; or shift lever is in P, N or R

    NG

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

    OK

  2. REPLACE TCM


    1. Replace the TCM Click here.


    NEXT

    PERFORM A/T CODE REGISTRATION Click here

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


    1. A016249E32

      Disconnect the transmission wire connector.

    2. Disconnect the TCM connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      E47-17 (TPS1) - E59-9 (TPS1) Always Below 1 Ω
      E47-17 (TPS1) or E59-9 (TPS1) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. INSPECT TRANSMISSION WIRE (OIL PRESSURE SWITCH)


    1. A0163EZE01

      Disconnect the oil pressure switch connector Click here.

    2. Disconnect the transmission wire connector.

    3. Measure the resistance according to the value(s) in the table below.

      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

    NG

    REPAIR OR REPLACE TRANSMISSION WIRE Click here

    OK

    REPLACE OIL PRESSURE SWITCH Click here