Dtc P0872 Transmission Fluid Pressure Sensor / Switch C Circuit Low

Transmission. Camry. Acv40 Gsv40
U660E Automatic Transaxle. Camry. Acv40 Gsv40

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK OTHER DTC OUTPUT (IN ADDITION TO DTC P0872 OR P0873)

CHECK TRANSMISSION WIRE (SHORT TO GROUND)

CHECK ATF TEMPERATURE SENSOR ASSEMBLY (ATF PRESSURE SWITCH NO.1)

CHECK TRANSMISSION WIRE

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

DTC P0873 Transmission Fluid Pressure Sensor / Switch "C" Circuit High


DESCRIPTION

ATF pressure switch No. 1 is installed in the shift solenoid valve ATF output passage. This switch is used to identify the malfunctioning part when a fail-safe operation is performed. If the shift solenoid valve malfunctions when the ATF switch has a malfunction, a fail-safe operation will be performed. This fail-safe operation is different from the fail-safe operation performed when the solenoid valve malfunctions and the ATF switch is normal.

DTC No.
DTC Detecting Condition
Trouble Area
P0872
ATF pressure switch No. 1 OFF is detected twice when any of the gears from 1st to 4th engages normally.
  1. ATF temperature sensor assembly (ATF pressure switch No. 1)
  1. Transmission wire
  1. TCM
P0873
ATF pressure switch No. 1 ON is detected twice when 5th or 6th gear engages normally.

WIRING DIAGRAM


Camry. Acv40 Gsv40.U660E Automatic Transaxle.Automatic Transaxle System. Dtc P0872 Transmission Fluid Pressure Sensor / Switch C Circuit Low


INSPECTION PROCEDURE

1.CHECK OTHER DTC OUTPUT (IN ADDITION TO DTC P0872 OR P0873)

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch on and turn the intelligent tester on.

  1. Enter the following items: "Powertrain / ECT / DTC / Current or Pending".

  1. Read the DTCs using the intelligent tester.

    Result:

    Display (DTC output)
    		Proceed to
    Only "P0873" is output
    		A
    Only "P0872" is output
    		B
    "P0872 or P0873" and other DTCs
    		C
    HINT:
    If a solenoid is stuck OFF, DTCs for several solenoids including the malfunctioning solenoid will be detected.


B
Go to step 4

C
GO TO DTC CHART
A


2.CHECK TRANSMISSION WIRE (SHORT TO GROUND)


    Camry. Acv40 Gsv40.U660E Automatic Transaxle.Automatic Transaxle System. Dtc P0872 Transmission Fluid Pressure Sensor / Switch C Circuit Low

  1. Remove the TCM.

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

    Standard resistance:
    Tester Condition
    		Specified Condition
    10 (TPS1) - Body ground (Valve body assembly)
    		10 kΩ or higher


OK
REPLACE TCM
NG


3.CHECK ATF TEMPERATURE SENSOR ASSEMBLY (ATF PRESSURE SWITCH NO.1)


    Camry. Acv40 Gsv40.U660E Automatic Transaxle.Automatic Transaxle System. Dtc P0872 Transmission Fluid Pressure Sensor / Switch C Circuit Low

  1. Disconnect the connector from the ATF temperature sensor assembly.

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

    Standard resistance:
    Tester Condition
    		Specified Condition
    3 (TPS1) - Body ground (Valve body assembly)
    		10 kΩ or higher


NG
REPLACE ATF TEMPERATURE SENSOR ASSEMBLY
OK

REPLACE TRANSMISSION WIRE

4.CHECK TRANSMISSION WIRE


    Camry. Acv40 Gsv40.U660E Automatic Transaxle.Automatic Transaxle System. Dtc P0872 Transmission Fluid Pressure Sensor / Switch C Circuit Low

  1. Remove the TCM.

  1. Disconnect the speed sensor connector from the ATF temperature sensor assembly.

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

    Standard resistance:
    Tester Condition
    		Specified Condition
    10 (TPS1) - 3 (TPS1)
    		Below 1 Ω
    10 (TPS1) or 3 (TPS1) - Body ground (Valve body assembly)
    		10 kΩ or higher


NG
REPLACE TRANSMISSION WIRE
OK

REPLACE ATF TEMPERATURE SENSOR ASSEMBLY