СИСТЕМА АВТОМАТИЧЕСКОЙ ТРАНСМИССИИ, 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 higher, ATF temperature is -10°C (14°F) or higher, and the vehicle is driven with shift lever in D (no malfunctions are detected in shift solenoid valve SL1, 2, 3, 4 and 5, SR, transmission revolution sensors (NT, NC3, SP2), engine coolant temperature sensor, oil temperature sensor, knock control sensor, electronic throttle, or CAN2)

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

  3. Malfunction status occurs 2 times (1 trip)

  4. 2 trip detection logic

  • Oil pressure switch

  • Transmission wire

  • Harness or connector

  • TCM

WIRING DIAGRAM

A01FH5JE01

INSPECTION PROCEDURE

Note

Perform registration and/or initialization when parts related to the automatic transmission are replaced Click here.

PROCEDURE


  1. READ VALUE USING GTS (TPS 1 SWITCH)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / ECT / Active Test / Control the Shift Position.

      ECT
      Tester Display Test Part Control Range Diagnostic Note
      Control the Shift Position Operates the shift solenoid valves to allow gears to be selected manually

      • Press "→" button: Up-shift occurs

      • Press "←" button: Down-shift occurs

      Possible to check operation of the shift solenoid valves.

      [Vehicle Condition]


      • Vehicle speed: 50 km/h (31 mph) or less

    5. Select TPS 1 Switch in the Data List.

    6. While performing the "Control the Shift Position" Active Test, check TPS 1 Switch in the Data List.

      ECT
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      TPS 1 Switch

      Oil pressure switch status/

      ON or OFF

      • ON: Gear is 1st to 5th

      • OFF: Gear is 6th to 8th, or shift lever is in P, N or R

      		 -
      Result
      Result Proceed to
      When the vehicle is being driven in a gear position between 1st and 5th, ON is displayed for TPS 1 Switch on the Data List. A
      When the vehicle is being driven in a gear position between 1st and 5th, OFF is displayed for TPS 1 Switch on the Data List. B

    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. Disconnect the F73 transmission wire connector.

    2. Disconnect the F72 TCM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F73-17 (TPS1) - F72-9 (TPS1) Always Below 1 Ω
      F73-17 (TPS1) or F72-9 (TPS1) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. INSPECT TRANSMISSION WIRE (OIL PRESSURE SWITCH)


    1. A01FEP4E01
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Oil Pressure Switch Connector)
      *b

      Component without harness connected

      (Transmission Wire)
      *c Connector

      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