K120 / K121 (CVT): K120 CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM: P084000,P28287F; Transmission Fluid Pressure Sensor/Switch "A" Circuit Range/Performance; 2020 - 2022 MY Corolla Corolla Hatchback [03/2019

Last Modified: 05-13-2024	6.11:8.1.0	Doc ID: RM100000001HSSN
Model Year Start: 2020	Model: Corolla Hatchback	Prod Date Range: [03/2019 - 09/2022]
Title: K120 / K121 (CVT): K120 CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM: P084000,P28287F; Transmission Fluid Pressure Sensor/Switch "A" Circuit Range/Performance; 2020 - 2022 MY Corolla Corolla Hatchback [03/2019 - 09/2022]

DTC

P084000

Transmission Fluid Pressure Sensor/Switch "A" Circuit Range/Performance

DTC

P28287F

Pressure Control Solenoid "K" Actuator Stuck Off

DESCRIPTION

The TCM controls the secondary oil pressure based on the secondary oil pressure signal output by the oil pressure sensor.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Memory

Note

P084000

Transmission Fluid Pressure Sensor/Switch "A" Circuit Range/Performance

Either of the following conditions is met (1-trip detection logic):

When the requested oil pressure is less than 1.0 MPa (10.2 kgf/cm², 145 psi), the oil pressure sensor output is 2.5 MPa (25.5 kgf/cm², 363 psi) or more for 3 seconds or more.
When the requested oil pressure is 1.4 MPa (14.3 kgf/cm², 203 psi) or more, the oil pressure sensor output is less than 0.5 MPa (5.1 kgf/cm², 73 psi) for 2 seconds or more.

Oil pressure sensor
Transmission valve body assembly
TCM
Continuously variable transaxle assembly

Comes on

DTC stored

SAE Code:

P0841

P28287F

Pressure Control Solenoid "K" Actuator Stuck Off

Either of the following conditions is met (1-trip detection logic):

When the requested oil pressure is less than 1.0 MPa (10.2 kgf/cm², 145 psi), the oil pressure sensor output is 2.5 MPa (25.5 kgf/cm², 363 psi) or more for 3 seconds or more.
When the requested oil pressure is 1.4 MPa (14.3 kgf/cm², 203 psi) or more, the oil pressure sensor output is less than 0.5 MPa (5.1 kgf/cm², 73 psi) for 2 seconds or more.

Oil pressure sensor
Transmission valve body assembly
TCM
Continuously variable transaxle assembly

Comes on

DTC stored

SAE Code:

P2829

DTC Detection Condition Patterns (P084000 and P28287F):

		Vehicle Condition
		Pattern 1	Pattern 2
Diagnostic Condition	The requested oil pressure value is less than 1.0 MPa (10.2 kgf/cm², 145 psi)	○	-
Diagnostic Condition	The requested oil pressure value is 1.4 MPa (14.3 kgf/cm², 203 psi) or more	-	○
Malfunction Condition	The oil pressure sensor output value is 2.5 MPa (25.5 kgf/cm², 363 psi) or more	○	-
Malfunction Condition	The oil pressure sensor output value is less than 0.5 MPa (5.1 kgf/cm², 73 psi)	-	○
Duration		3 seconds or more	2 seconds or more
Detection Logic		1-trip detection logic	1-trip detection logic

HINT:

These DTCs are output when either of the above detection patterns is met.

MONITOR DESCRIPTION

The TCM checks for belt clamping high-pressure or low-pressure malfunctions. If a mechanical malfunction of the shift solenoid valve SLS or a malfunction of the oil pressure sensor is detected by the TCM, it illuminates the MIL and stores a DTC.

MONITOR STRATEGY

Related DTCs	P0841: Transmission fluid pressure sensor "A" (PTO (Oil pressure sensor))/Rationality fault diagnostics P2829: Pressure control solenoid "K" (Shift solenoid valve SLS)/Functional check
Required sensors/Components	Crankshaft position sensor Transmission revolution sensor (NT) Transmission revolution sensor (NC1) Transmission revolution sensor (NSS) Transmission revolution sensor (NOUT) CVT fluid temperature sensor Engine coolant temperature sensor Oil pressure sensor Shift solenoid valve SL1 Shift solenoid valve SL2 Shift solenoid valve SLP Shift solenoid valve SLS Shift solenoid valve SLU
Frequency of operation	Continuous
Duration	P0841: OFF malfunction (A): 2 sec. OFF malfunction (B): 1 sec. OFF malfunction (C): 4 sec. OFF malfunction (D): 2 sec. ON malfunction (A): 3 sec. ON malfunction (B): 3 sec. P2829: OFF malfunction (A): 3 sec. OFF malfunction (B): 3 sec. ON malfunction: 2 sec.
MIL operation	1 driving cycle
Sequence of operation	None

TYPICAL ENABLING CONDITIONS

All

ETC system

(Electronic throttle control system)

Not system down

(MIL illuminated by following codes: P0121, P0122, P0123, P0222, P0223, P0604, P0606, P0607, P060D, P060E, P0657, P0658, P1607, P16B0, P2102, P2103, P2111, P2112, P2119, P2135)

KCS sensor circuit

(Knock sensor)

Not circuit malfunction

(MIL illuminated by following codes: P0327, P0328)

ECT sensor circuit

(Engine coolant temperature sensor)

Not circuit malfunction

(MIL illuminated by following codes: P0117, P0118)

IAT sensor circuit

(Intake air temperature sensor)

Not circuit malfunction

(MIL illuminated by following codes: P0112, P0113)

Crankshaft position sensor "A" circuit

(Crankshaft position sensor)

Not circuit malfunction

(MIL illuminated by following codes: P0335, P0337, P0338)

CAN communication between ECM and TCM

Not system down

(MIL illuminated by following codes: U0100, U0101)

Low voltage flag

OFF

Transmission fluid pressure sensor "A" circuit

(Oil pressure sensor)

Not circuit malfunction

(MIL illuminated by following codes: P0842, P0843)

Pressure control solenoid "J" circuit

(Shift solenoid valve SLP)

Not circuit malfunction

(MIL illuminated by following codes: P2826, P2827)

Pressure control solenoid "K" circuit

(Shift solenoid valve SLS)

Not circuit malfunction

(MIL illuminated by following codes: P282F, P2830)

Torque converter clutch pressure control solenoid circuit

(Shift solenoid valve SLU)

Not circuit malfunction

(MIL illuminated by following codes: P2763, P2764)

Pressure control solenoid "A" circuit

(Shift solenoid valve SL1)

Not circuit malfunction

(MIL illuminated by following codes: P0962, P0963)

Pressure control solenoid "B" circuit

(Shift solenoid valve SL2)

Not circuit malfunction

(MIL illuminated by following codes: P0966, P0967)

Transmission fluid temperature sensor "A" circuit

(CVT fluid temperature sensor)

Not circuit malfunction

(MIL illuminated by following codes: P0712, P0713)

Turbine speed sensor "A" circuit

(Transmission revolution sensor (NT))

Not circuit malfunction

(MIL illuminated by following codes: P0717, P07BF, P07C0)

Intermediate shaft speed sensor "C" circuit

(Transmission revolution sensor (NSS))

Not circuit malfunction

(MIL illuminated by following codes: P07C9, P07CA, P2751)

Output speed sensor circuit

(Transmission revolution sensor (NOUT))

Not circuit malfunction

(MIL illuminated by following codes: P0722, P077C, P077D)

Intermediate shaft speed sensor "B" circuit

(Transmission revolution sensor (NC1))

Not circuit malfunction

(MIL illuminated by following codes: P07C7, P07C8, P2747)

P0841:

OFF malfunction (A)

Engine speed	550 rpm or more
Transmission fluid temperature	-10°C (14°F) or more
Time after following condition is met	0.5 sec. or more
- Variation of the accelerator pedal angle (within 32.768 msec.)	Less than 0.5%
Shift solenoid valve SLS	Operating clamping pressure control by TCM command
ECT	60°C (140°F) or more
Spark advance from MAX. retard timing by KCS control	0 °CA or more
Gear and belt mode clutch	Either engagement or disengagement

OFF malfunction (B)

Shift solenoid valve SLP	Operating shift control by TCM command
Engine speed	500 rpm or more
Synchronizer	Engaged
Turbine speed	More than 0 rpm
Any of the following conditions are met: (a) or (b)	-
(a) Gear mode clutch speed	More than 0 rpm
(b) All of the following conditions are met	-
- Gear mode clutch speed	0 rpm
- Output speed	0 rpm

OFF malfunction (C)

Shift position	"N" or "P" or "D" or "B"
Gear shift position circuit	Not circuit malfunction (P0916, P0917)
Shift solenoid valve SLP	Operating shift control by TCM command
Engine speed	500 rpm or more

OFF malfunction (D)

Any of the following conditions are met: (a) or (b)	-
(a) Gear mode clutch	Engaged
(b) Belt mode clutch	Engaged
Engine speed	1000 rpm or more
Shift solenoid valve SLP	Operating shift control by TCM command

ON malfunction (A)

Engine speed	550 rpm or more
Transmission fluid temperature	-10°C (14°F) or more
Time after following condition is met	0.5 sec. or more
- Variation of the accelerator pedal angle (within 32.768 msec.)	Less than 0.5%
Shift solenoid valve SLS	Operating clamping pressure control by TCM command
ECT	60°C (140°F) or more
Spark advance from MAX. retard timing by KCS control	0 °CA or more
All of the following conditions are met	-
- Gear mode clutch	Engaged
- Belt mode clutch	Engaged

ON malfunction (B)

Tire	Not slipping
Primary sheave speed	100 rpm or more
Secondary sheave speed	150 rpm or more
Output speed	1000 rpm or more
Transmission fluid temperature	-10°C (14°F) or more and less than 140°C (284°F)
Belt mode clutch	Engaged
Shift solenoid valve SLP	Operating shift control by TCM command
Actual gear ratio	More than 0.5 and 2.2 or less
Accelerator pedal	ON
Target clamping pressure	Less than 1.0 MPa (10.2 kgf/cm², 145 psi)
Target gear ratio	More than 0.9 and 1.1 or less

P2829:

All

Engine speed	550 rpm or more
Transmission fluid temperature	-10°C (14°F) or more
Time after following condition is met	0.5 sec. or more
- Variation of the accelerator pedal angle (within 32.768 msec.)	Less than 0.5%
Shift solenoid valve SLS	Operating clamping pressure control by TCM command
ECT	60°C (140°F) or more
Spark advance from MAX. retard timing by KCS control	0 °CA or more

OFF malfunction (A)

Any of the following conditions are met: (a) or (b)	-
(a) Gear mode clutch	Engaged
(b) Belt mode clutch	Engaged

OFF malfunction (B)

Tire	Not slipping
Primary sheave speed	100 rpm or more
Secondary sheave speed	150 rpm or more
Output speed	1000 rpm or more
Transmission fluid temperature	-10°C (14°F) or more and less than 140°C (284°F)
Belt mode clutch	Engaged
Shift solenoid valve SLP	Operating shift control by TCM command
Actual gear ratio	More than 0.5 and 2.2 or less
Accelerator pedal	ON
Target clamping pressure	Less than 1.0 MPa (10.2 kgf/cm², 145 psi)
Target gear ratio	More than 0.9 and 1.1 or less

ON malfunction

Gear and belt mode clutch

Either engagement or disengagement

TYPICAL MALFUNCTION THRESHOLDS

P0841:

OFF malfunction

OFF malfunction (A) is met and none of the following conditions are met: OFF malfunction (B), (C) and (D)

OFF malfunction (A)

Target clamping pressure	1.4 MPa (14.3 kgf/cm², 203 psi) or more
Actual clamping pressure	Less than 0.5 MPa (5.1 kgf/cm², 73 psi)

OFF malfunction (B)

TCM indicate gear mode clutch	Engagement
Turbine speed - Gear mode clutch speed	More than 200 rpm

OFF malfunction (C)

TCM indicate synchronizer	Engagement
Synchronizer	Not engaged

OFF malfunction (D)

TCM indicate lock-up clutch	Engagement
Engine speed - Turbine speed	250 rpm or more

ON malfunction

All of the following conditions are met

ON malfunction (A)

Target clamping pressure	Less than 1.0 MPa (10.2 kgf/cm², 145 psi)
Actual clamping pressure	2.5 MPa (25.5 kgf/cm², 363 psi) or more

ON malfunction (B) (after ON malfunction (A) is met)

*: Calculated primary pulley pressure is calculated by value of transmission fluid pressure sensor "A" (oil pressure sensor) and actual gear ratio.
Calculated primary pulley pressure* - Target primary pulley pressure	2.0 MPa (20.4 kgf/cm², 290 psi) or more

P2829:

OFF malfunction

All of the following conditions are met

OFF malfunction (A)

Target clamping pressure	Less than 1.0 MPa (10.2 kgf/cm², 145 psi)
Actual clamping pressure	2.5 MPa (25.5 kgf/cm², 363 psi) or more

OFF malfunction (B) (after OFF malfunction (A) is met)

*: Calculated primary pulley pressure is calculated by value of transmission fluid pressure sensor "A" (oil pressure sensor) and actual gear ratio.
Calculated primary pulley pressure* - Target primary pulley pressure	Less than 0.5 MPa (5.1 kgf/cm², 73 psi)

ON malfunction

Target clamping pressure	1.4 MPa (14.3 kgf/cm², 203 psi) or more
Actual clamping pressure	Less than 0.5 MPa (5.1 kgf/cm², 73 psi)

CONFIRMATION DRIVING PATTERN

CAUTION:

When performing the confirmation driving pattern, obey all speed limits and traffic laws.

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.
Click here

Connect the Techstream to the DLC3.
Turn the engine switch on (IG) and turn the Techstream on.
Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the engine switch off and wait for 2 minutes or more.
Turn the engine switch on (IG) and turn the Techstream on.
Start the engine.
Perform the D Position Shift Test inspection in Road Test. [*1]
Click here

HINT:

[*1]: Normal judgment procedure.

The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
Stop the vehicle.
Enter the following menus: Powertrain / Transmission / Utility / All Readiness.
Input the DTC: P084000 or P28287F.

Check the DTC judgment result.

Techstream 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.

Click here

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 chock is 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.
Click here
Perform registration and/or initialization when parts related to the continuously variable transaxle system are replaced.
Click here
Check that no DTCs are stored after performing initialization.
Click here

HINT:

If any DTCs other than P084000 or P28287F are output, perform troubleshooting for those DTCs first.

PROCEDURE

1.	CHECK DTC OUTPUT (IN ADDITION TO DTC P084000 AND P28287F)

(a) Connect the Techstream to the DLC3.

(b) Turn the engine switch on (IG).

(d) Enter the following menus: Powertrain / Transmission / Trouble Codes.

Powertrain > Transmission > Trouble Codes

(e) Read the DTCs using the Techstream.

HINT:

If DTC P084011 or P084015 is output, perform troubleshooting for that DTC first.
If DTCs P084011 and P084015 are not output but DTC P282812 or P282814 is output, perform troubleshooting for DTC P282812 or P282814 first.

Result	Proceed to
Only DTC P084000 is output	A
Only DTC P28287F is output	B
Both DTC P084000 and P28287F are output	C
DTC P084000 and/or P28287F and P084011 are output	D
DTC P084000 and/or P28287F and P084015 are output	E
DTC P084000 and/or P28287F and P282812 output	F
DTC P084000 and/or P28287F and P282814 output	G
DTC P084000 and/or P28287F and DTCs other than P084011, P084015, P282812 and P282814 are output	H

GO TO STEP 6

GO TO STEP 8

GO TO DTC CHART (DTC P084011)

GO TO DTC CHART (DTC P084015)

GO TO DTC CHART (DTC P282812)

GO TO DTC CHART (DTC P282814)

GO TO DTC CHART

2.	READ VALUE USING TECHSTREAM (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 longer than 5 seconds.
When performing the stall speed test repeatedly, wait for 15 seconds or more between tests.
w/ Electric Parking Brake System:
Perform this test with the AUTO function (shift-linked function) of the electric parking brake system off.

(a) Warm up the engine.

(b) Fully apply the parking brake and chock all 4 wheels.

HINT:

w/ Electric Parking Brake System:

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.

(d) Turn the engine switch on (IG).

(e) Turn the Techstream on.

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

(g) According to the display on the Techstream, perform the Active Test.

Powertrain > Transmission > Active Test

Tester Display	Measurement Item	Control Range	Diagnostic Note
Activate the TC Terminal	Turn on and off TC and TE1 (CG) connection	ON or OFF	ON: TC and TE1 are connected. OFF: TC and TE1 are disconnected. (Vehicle Condition) Engine switch on (IG), engine stopped and shift lever in P

(h) Enter the following menus: Powertrain / Transmission / Data List / Belt Clamping Force Sensor.

(i) According to the display on the Techstream, 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 4.3 MPa (35.7 to 43.8 kgf/cm², 508 to 624 psi): D position stall test
1.6 to 2.4 MPa (16.3 to 24.5 kgf/cm², 232 to 348 psi): R position stall test

Powertrain > Transmission > Active Test

Active Test Display
Activate the TC Terminal

Data List Display
Belt Clamping Force Sensor

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

CHECK FOR INTERMITTENT PROBLEMS

3.	CHECK TCM (VCPT TERMINAL VOLTAGE)

(a) Disconnect the C71 oil pressure sensor connector.

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

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

Standard Voltage:

Tester Connection	Condition	Specified Condition
C71-3 (VC) - C71-1 (E2)	Engine switch on (IG)	4.75 to 5.25 V

GO TO STEP 5

4.	REPLACE OIL PRESSURE SENSOR

(a) Replace the oil pressure sensor.

Click here

PERFORM INITIALIZATION

5.	REPLACE TCM

(a) Replace the TCM.

Click here

PERFORM REGISTRATION AND INITIALIZATION

for Registration: Click here

for Initialization: Click here

6.	READ VALUE USING TECHSTREAM (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 longer than 5 seconds.
When performing the stall speed test repeatedly, wait for 15 seconds or more between tests.
w/ Electric Parking Brake System:
Perform this test with the AUTO function (shift-linked function) of the electric parking brake system off.

(a) Warm up the engine.

(b) Fully apply the parking brake and chock all 4 wheels.

HINT:

w/ Electric Parking Brake System:

(d) Turn the engine switch on (IG).

(e) Turn the Techstream on.

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

(g) According to the display on the Techstream, perform the Active Test.

Powertrain > Transmission > Active Test

Tester Display	Measurement Item	Control Range	Diagnostic Note
Activate the TC Terminal	Turn on and off TC and TE1 (CG) connection	ON or OFF	ON: TC and TE1 are connected. OFF: TC and TE1 are disconnected. (Vehicle Condition) Engine switch on (IG), engine stopped and shift lever in P

(h) Enter the following menus: Powertrain / Transmission / Data List / Belt Clamping Force Sensor.

(i) According to the display on the Techstream, 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 4.3 MPa (35.7 to 43.8 kgf/cm², 508 to 624 psi): D position stall test
1.6 to 2.4 MPa (16.3 to 24.5 kgf/cm², 232 to 348 psi): R position stall test

Powertrain > Transmission > Active Test

Active Test Display
Activate the TC Terminal

Data List Display
Belt Clamping Force Sensor

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

CHECK FOR INTERMITTENT PROBLEMS

7.	REPLACE CONTINUOUSLY VARIABLE TRANSAXLE ASSEMBLY

(a) Replace the continuously variable transaxle assembly.

Click here

PERFORM REGISTRATION AND INITIALIZATION

for Registration: Click here

for Initialization: Click here

8.	READ VALUE USING TECHSTREAM (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 longer than 5 seconds.
When performing the stall speed test repeatedly, wait for 15 seconds or more between tests.
w/ Electric Parking Brake System:
Perform this test with the AUTO function (shift-linked function) of the electric parking brake system off.

(a) Warm up the engine.

(b) Fully apply the parking brake and chock all 4 wheels.

HINT:

w/ Electric Parking Brake System:

(d) Turn the engine switch on (IG).

(e) Turn the Techstream on.

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

(g) According to the display on the Techstream, perform the Active Test.

Powertrain > Transmission > Active Test

Tester Display	Measurement Item	Control Range	Diagnostic Note
Activate the TC Terminal	Turn on and off TC and TE1 (CG) connection	ON or OFF	ON: TC and TE1 are connected. OFF: TC and TE1 are disconnected. (Vehicle Condition) Engine switch on (IG), engine stopped and shift lever in P

(h) Enter the following menus: Powertrain / Transmission / Data List / Belt Clamping Force Sensor.

(i) According to the display on the Techstream, 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 4.3 MPa (35.7 to 43.8 kgf/cm², 508 to 624 psi): D position stall test
1.6 to 2.4 MPa (16.3 to 24.5 kgf/cm², 232 to 348 psi): R position stall test

Powertrain > Transmission > Active Test

Active Test Display
Activate the TC Terminal

Data List Display
Belt Clamping Force Sensor

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

CHECK FOR INTERMITTENT PROBLEMS

9.	CHECK TCM (VCPT TERMINAL VOLTAGE)

(a) Disconnect the C71 oil pressure sensor connector.

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

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

Standard Voltage:

Tester Connection	Condition	Specified Condition
C71-3 (VC) - C71-1 (E2)	Engine switch on (IG)	4.75 to 5.25 V

GO TO STEP 13

10.	INSPECT TRANSMISSION VALVE BODY ASSEMBLY (SHIFT SOLENOID VALVE SLS)

(a) Disconnect the transmission wire connector from the shift solenoid valve SLS.

Click here

Transmission Valve Body Assembly

Shift Solenoid Valve SLS

Component without harness connected

(Shift Solenoid Valve SLS)

(b) Connect a positive (+) lead from the battery with a 21 W bulb to terminal 1 and a negative (-) lead to terminal 2 of the shift solenoid valve SLS connector. Check that the valve moves and makes an operating sound.

OK:

Valve moves and makes an operating sound.

GO TO STEP 12

11.	REPLACE OIL PRESSURE SENSOR

(a) Replace the oil pressure sensor.

Click here

PERFORM INITIALIZATION

12.	REPLACE CONTINUOUSLY VARIABLE TRANSAXLE ASSEMBLY

(a) Replace the continuously variable transaxle assembly.

Click here

PERFORM REGISTRATION AND INITIALIZATION

for Registration: Click here

for Initialization: Click here

13.	REPLACE TCM

(a) Replace the TCM.

Click here

PERFORM REGISTRATION AND INITIALIZATION

for Registration: Click here

for Initialization: Click here

DESCRIPTION

DTC Detection Condition Patterns (P084000 and P28287F):

MONITOR DESCRIPTION

MONITOR STRATEGY

P0841:

P2829:

TYPICAL ENABLING CONDITIONS

All

P0841:

OFF malfunction (A)

OFF malfunction (B)

OFF malfunction (C)

OFF malfunction (D)

ON malfunction (A)

ON malfunction (B)

P2829:

All

OFF malfunction (A)

OFF malfunction (B)

ON malfunction

TYPICAL MALFUNCTION THRESHOLDS

P0841:

OFF malfunction (A)

OFF malfunction (B)

OFF malfunction (C)

OFF malfunction (D)

ON malfunction (A)

ON malfunction (B) (after ON malfunction (A) is met)

P2829:

OFF malfunction (A)

OFF malfunction (B) (after OFF malfunction (A) is met)

CONFIRMATION DRIVING PATTERN

WIRING DIAGRAM

CAUTION / NOTICE / HINT

PROCEDURE

Powertrain > Transmission > Trouble Codes

Powertrain > Transmission > Active Test

(Vehicle Condition)

Powertrain > Transmission > Data List

Powertrain > Transmission > Active Test

Powertrain > Transmission > Active Test

(Vehicle Condition)

Powertrain > Transmission > Data List

Powertrain > Transmission > Active Test

Powertrain > Transmission > Active Test

(Vehicle Condition)

Powertrain > Transmission > Data List

Powertrain > Transmission > Active Test