RM3660EC _52 Drivetrain _080728 K313 CVT _0392261 CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM C

K313 CVT CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM P084015 Transmission Fluid Pressure Sensor/Switch "A" Circuit Short To Battery or Open

DESCRIPTION

The ECM performs learning control for the belt clamping pressure based on the belt clamping pressure signal, which is output by the oil pressure sensor.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	Memory	Note
P084015	Transmission Fluid Pressure Sensor/Switch "A" Circuit Short To Battery or Open	When 2 seconds or more have elapsed since engine start, there is an open or a short to +B in the oil pressure sensor circuit for 0.5 seconds (1-trip detection logic).	· Wire harness or connector · Oil pressure sensor · ECM	Comes on	DTC stored	SAE Code: P0843

MONITOR DESCRIPTION

This DTC indicates an open or a short to +B in the oil pressure sensor circuit. If there is an open or a short to +B in the oil pressure sensor circuit, the ECM detects the malfunction, illuminates the MIL and stores a DTC.

CONFIRMATION DRIVING PATTERN

HINT:: ·

After repairs have been completed, clear the DTCs and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.

·

When clearing the permanent DTCs, refer to the Clear Permanent DTC procedure.

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Connect the GTS to the DLC3.

Turn the ignition switch to ON and turn the GTS on.

Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

Turn the ignition switch off and wait for 2 minutes or more.

Turn the ignition switch to ON and turn the GTS on.

Start the engine and wait for 5 seconds or more. [*1]

HINT:: [*1]: Normal judgment procedure.; The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.

Enter the following menus: Powertrain / Transmission / Utility / All Readiness.

Input the DTC: P084015.

Check the DTC judgment result.

GTS Display	Description
NORMAL	· DTC judgment completed · System normal
ABNORMAL	· DTC judgment completed · System abnormal
INCOMPLETE	· DTC judgment not completed · Perform driving pattern after confirming DTC enabling conditions
N/A	· Unable to perform DTC judgment · Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit

HINT:: ·

If the judgment result shows NORMAL, the system is normal.

·

If the judgment result shows ABNORMAL, the system has a malfunction.

·

If the judgment result shows INCOMPLETE or N/A, perform the normal judgment procedure again.

WIRING DIAGRAM

Refer to DTC P084011.

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CAUTION / NOTICE / HINT

CAUTION:: ·

Do not perform a stall test if there are any people or objects near the vehicle.

·

The vehicle could begin moving suddenly, resulting in a serious accident.; ·

Do not perform a stall test if any wheel chocks are out of position.

·

The vehicle could begin moving suddenly, resulting in a serious accident.; ·

Do not perform the stall test on a slippery or low-friction surface that could allow the tires to spin.

·

The vehicle could begin moving suddenly, resulting in a serious accident.

NOTICE:: ·

Perform the universal trip to clear permanent DTCs.

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·

Perform initialization when parts related to the continuously variable transaxle system are replaced.

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·

Check that no DTCs are stored after performing initialization.

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PROCEDURE

1.READ VALUE USING GTS (BELT CLAMPING FORCE SENSOR)

CAUTION:: A stall speed test should always be performed with at least 2 people. One person should observe the condition of the wheels and wheel chocks while the other is performing the test.

NOTICE:: ·

This test must be performed after checking and confirming that the engine is normal.

·

Perform this test with the CVT fluid temperature between 50 and 100°C (122 and 212°F).

·

Perform this test with the air conditioning off.

·

Do not perform the stall speed test for more than 5 seconds.

·

When performing the stall speed test repeatedly, wait for 15 seconds or more between tests.

·

Perform this test with the AUTO function (shift-linked function) of the electric parking brake system off.

Warm up the engine.

Fully apply the parking brake and chock all 4 wheels.

HINT:: When the parking brake indicator (red) is illuminated after the electric parking brake switch (electric parking brake switch assembly) has been pulled to the lock side, the maximum amount of braking force is applied if the electric parking brake switch (electric parking brake switch assembly) is pulled to the lock side one more time.

Connect the GTS to the DLC3.

Turn the ignition switch to ON.

Turn the GTS on.

Enter the following menus: Powertrain / Transmission / Active Test / Activate the TC Terminal.

According to the display on the GTS, perform the Active Test.

According to the display on the GTS, read the Data List.

Powertrain > Transmission > Data List

Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
Belt Clamping Force Sensor	Secondary oil pressure value	Min.: -64 MPa Max.: 63.998 MPa	Secondary oil pressure inspection: · 3.5 to 5.5 MPa (35.7 to 56.1 kgf/cm², 508 to 798 psi): D position stall test · 3.6 to 5.5 MPa (36.7 to 56.1 kgf/cm², 522 to 798 psi): R position stall test	-

Powertrain > Transmission > Active Test

Active Test Display
Activate the TC Terminal

Data List Display
Belt Clamping Force Sensor

50004 373 22 367

Result:

Result	Proceed to
Data List value is normal	A
Data List value is not normal	B

2.REPLACE ECM

3.CHECK ECM (VCPT TERMINAL VOLTAGE)

2.REPLACE ECM

Replace the ECM.

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Result:

Proceed to
NEXT

PERFORM INITIALIZATION

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3.CHECK ECM (VCPT TERMINAL VOLTAGE)

0.438,0.938 0.802,1.219 0.365,0.281 1.479,1.271 1.146,1.719 1.146,1.719 1.01,1.719 true 2.052,1.26 2.406,1.677 2.406,1.677 2.531,1.677 true 0.833,1.646 1.219,1.854 0.385,0.208 10 false E2 2.604,1.615 2.875,1.802 0.271,0.188 10 false VC 0.094,0.094 0.313,0.25 0.219,0.156 10 false *a 0.5,0.99 0.938,1.167 0.438,0.177 10 false C72

*a	Front view of wire harness connector (to Oil Pressure Sensor)

Disconnect the C72 oil pressure sensor connector.

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

Standard Voltage:

Tester Connection	Condition	Specified Condition
C72-3 (VC) - C72-1 (E2)	Ignition switch ON	4.75 to 5.25 V

Connect the C72 oil pressure sensor connector.

Result:

Proceed to
OK
NG

4.CHECK HARNESS AND CONNECTOR (OIL PRESSURE SENSOR - ECM)

10.CHECK HARNESS AND CONNECTOR (OIL PRESSURE SENSOR - ECM)

4.CHECK HARNESS AND CONNECTOR (OIL PRESSURE SENSOR - ECM)

Disconnect the C72 oil pressure sensor connector.

Disconnect the C78 ECM connector.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
C72-2 (PTO) or C78-86 (PTO) - Other terminals	Always	10 kΩ or higher

Connect the C78 ECM connector.

Connect the C72 oil pressure sensor connector.

Result:

Proceed to
OK
NG

5.REPLACE OIL PRESSURE SENSOR

REPAIR OR REPLACE HARNESS OR CONNECTOR (OIL PRESSURE SENSOR - ECM)

5.REPLACE OIL PRESSURE SENSOR

Replace the oil pressure sensor.

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Result:

Proceed to
NEXT

6.CLEAR DTC

Clear the DTCs.

Powertrain > Transmission > Clear DTCs: 50002 373

Result:

Proceed to
NEXT

7.PERFORM INITIALIZATION

Using the GTS, perform Reset Memory, Deceleration Sensor Zero Point Calibration and CVT Oil Pressure Calibration.

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Result:

Proceed to
NEXT

8.CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED (P084015)

Connect the GTS to the DLC3.

Start the engine and wait for 5 seconds or more.

Turn the GTS on.

Enter the following menus: Powertrain / Transmission / Trouble Codes.

Read the DTCs.

Powertrain > Transmission > Trouble Codes: 50001 373

Result:

Result	Proceed to
DTCs are not output	A
DTC P084015 is output	B

END

9.REPLACE ECM

Replace the ECM.

Result:

Proceed to
NEXT

PERFORM INITIALIZATION

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10.CHECK HARNESS AND CONNECTOR (OIL PRESSURE SENSOR - ECM)

Disconnect the C72 oil pressure sensor connector.

Disconnect the C78 ECM connector.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
C72-3 (VC) or C78-118 (VCPT) - Other terminals	Always	10 kΩ or higher

Connect the C78 ECM connector.

Connect the C72 oil pressure sensor connector.

Result:

Proceed to
OK
NG

11.REPLACE ECM

REPAIR OR REPLACE HARNESS OR CONNECTOR (OIL PRESSURE SENSOR - ECM)

11.REPLACE ECM

Replace the ECM.

Result:

Proceed to
NEXT

PERFORM INITIALIZATION

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