K120 / K121 (CVT): K121 CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM: P07457F,P076A7E,P077571,P08CC7F,P08D57E,P09149F; Pressure Control Solenoid "A" Actuator Stuck Off; 2023 - 2025 MY Corolla Corolla Hatchback [03/2023

Last Modified: 07-31-2024	6.11:8.1.0	Doc ID: RM100000002B36A
Model Year Start: 2023	Model: Corolla Hatchback	Prod Date Range: [03/2023 - ]
Title: K120 / K121 (CVT): K121 CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM: P07457F,P076A7E,P077571,P08CC7F,P08D57E,P09149F; Pressure Control Solenoid "A" Actuator Stuck Off; 2023 - 2025 MY Corolla Corolla Hatchback [03/2023 - ]

DTC

P07457F

Pressure Control Solenoid "A" Actuator Stuck Off

DTC

P076A7E

Shift Solenoid "H" Control Actuator Stuck On

DTC

P077571

Pressure Control Solenoid "B" Actuator Stuck

DTC

P08CC7F

Shift Solenoid "J" Control Actuator Stuck Off

DTC

P08D57E

Shift Solenoid "K" Control Actuator Stuck On

DTC

P09149F

Gear Shift Position Circuit "A" Range/Performance Stuck Off

DESCRIPTION

Using the current from the ECM, the shift solenoid valve SL1 controls the C1 clutch pressure and S1 synchronizer in accordance with the requested shift mode.

Using the current from the ECM, the shift solenoid valve SL2 controls the C2 clutch pressure in accordance with the requested shift mode.

By controlling the current, the ECM controls the shift solenoid valve SC1 and switches between forward driving control fluid pressure, and rearward driving control fluid pressure.

By controlling the current, the ECM controls the shift solenoid valve SC2 and switches the shift solenoid valve SL1 between the role of controlling the C1 clutch pressure and controlling the S1 synchronizer.

When the ECM requests the shift mode to be changed to gear mode, the C1 clutch is engaged and the input torque is transmitted to the 1st gear via the forward clutch drum.

When the ECM requests the shift mode to be changed to gear mode, the S1 synchronizer is engaged and input torque is transferred to the 1st gear.

When the ECM requests the shift mode to be changed to belt mode, the C2 clutch is engaged and the input torque is transmitted to the output shaft via the steel belt.

The shift stroke sensor detects the S1 synchronizer position using the magnet on the shift fork, and sends signals to the ECM.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	DTC Output from	Priority	Note
P07457F	Pressure Control Solenoid "A" Actuator Stuck Off	Any of the following conditions are met (1-trip detection logic): When the ECM commands the C1 clutch to be engaged, the difference between the signals from the transmission revolution sensor (NT) and (NC1) is more than 200 rpm for 1 second or more. When the ECM commands the S1 synchronizer to be engaged, the shift stroke sensor output value is less than 9.205 mm (0.362 in.) for 4 seconds or more. It is detected 2 times that when the C1 clutch is engaged, the shift stroke sensor output value decreases by 2.2 mm (0.087 in.) within 1 second of a S1 synchronizer hold command from the ECM. It is detected 2 times that when the C1 clutch is being engaged from release, the shift stroke sensor output value decreases by 3.1 mm (0.122 in.) within 1 second of a S1 synchronizer hold command from the ECM.	Shift stroke sensor Transmission valve body assembly (shift solenoid valve SL1, SL2, SC1, SC2 or SC3) Continuously variable transaxle assembly	Comes on	Engine	B	SAE Code: P0746
P076A7E	Shift Solenoid "H" Control Actuator Stuck On	Any of the following conditions are met (1-trip detection logic): When the ECM commands the C2 clutch to be engaged, the difference between the signals from the transmission revolution sensor (NSS) and output shaft speed is more than 300 rpm for 2 seconds or more. When the ECM commands the C1 clutch to be engaged, the difference between the signals from the transmission revolution sensor (NT) and (NC1) is more than 200 rpm for 1 second or more. When the oil pressure sensor output value is 0.4 MPa (4.1 kgf/cm², 58 psi) or more and the target gear ratio is less than 1.1, the actual gear ratio is 1.8 or more for 2 seconds or more.	Transmission valve body assembly (shift solenoid valve SL1, SL2, SC1, SC2 or SC3) Continuously variable transaxle assembly	Comes on	Engine	B	SAE Code: P076C
P077571	Pressure Control Solenoid "B" Actuator Stuck	Any of the following conditions are met (1-trip detection logic): When the ECM commands the C2 clutch to be engaged, the difference between the signals from the transmission revolution sensor (NSS) and output shaft speed is more than 300 rpm for 2 seconds or more. When the ECM commands the C1 clutch to be engaged, the difference between the signals from the transmission revolution sensor (NT) and (NC1) is more than 200 rpm for 1 second or more.	Transmission valve body assembly (shift solenoid valve SL1, SL2, SC1, SC2 or SC3) Continuously variable transaxle assembly	Comes on	Engine	B	SAE Code: P0776
P08CC7F	Shift Solenoid "J" Control Actuator Stuck Off	Any of the following conditions are met (1-trip detection logic): When the ECM commands the C1 clutch to be engaged, the difference between the signals from the transmission revolution sensor (NT) and (NC1) is more than 200 rpm for 1 second or more. When the ECM commands the S1 synchronizer to be engaged, the shift stroke sensor output value is less than 9.205 mm (0.362 in.) for 4 seconds or more. It is detected 2 times that when the C1 clutch is engaged, the shift stroke sensor output value decreases by 2.2 mm (0.087 in.) within 1 second of a S1 synchronizer hold command from the ECM. It is detected 2 times that when the C1 clutch is being engaged from release, the shift stroke sensor output value decreases by 3.1 mm (0.122 in.) within 1 second of a S1 synchronizer hold command from the ECM.	Shift stroke sensor Transmission valve body assembly (shift solenoid valve SL1, SL2, SC1, SC2 or SC3) Continuously variable transaxle assembly	Comes on	Engine	B	SAE Code: P08CD
P08D57E	Shift Solenoid "K" Control Actuator Stuck On	Any of the following conditions are met (1-trip detection logic): When the ECM commands the C2 clutch to be engaged, the difference between the signals from the transmission revolution sensor (NSS) and output shaft speed is more than 300 rpm for 2 seconds or more. When the ECM commands the C1 clutch to be engaged, the difference between the signals from the transmission revolution sensor (NT) and (NC1) is more than 200 rpm for 1 second or more.	Transmission valve body assembly (shift solenoid valve SL1, SL2, SC1, SC2 or SC3) Continuously variable transaxle assembly	Comes on	Engine	B	SAE Code: P08D7
P09149F	Gear Shift Position Circuit "A" Range/Performance Stuck Off	Any of the following conditions are met (1-trip detection logic): When the ECM commands the S1 synchronizer to be engaged, the shift stroke sensor output value is less than 9.205 mm (0.362 in.) for 4 seconds or more. It is detected 2 times that when the C1 clutch is engaged, the shift stroke sensor output value decreases by 2.2 mm (0.087 in.) within 1 second of a S1 synchronizer hold command from the ECM. It is detected 2 times that when the C1 clutch is being engaged from release, the shift stroke sensor output value decreases by 3.1 mm (0.122 in.) within 1 second of a S1 synchronizer hold command from the ECM.	Shift stroke sensor Transmission valve body assembly (shift solenoid valve SL1, SL2, SC1, SC2 or SC3) Continuously variable transaxle assembly	Comes on	Engine	B	SAE Code: P0915

MONITOR DESCRIPTION

When the ECM requests the shift mode to be changed to gear mode, the shift solenoid valve SL1 and shift solenoid valve SC2 are turned ON and the C1 clutch is engaged. As a result, the transmission revolution sensor (NT) signal becomes equal to the transmission revolution sensor (NC1) signal.
By comparing the signals indicating the input shaft revolution (speed) and intermediate shaft (C1 clutch) revolution (speed), the ECM judges if the shift mode is gear mode or not.

When the ECM requests the shift mode to be changed to gear mode, if the difference between the transmission revolution sensor (NT) and (NC1) signals is more than 200 rpm, it determines that the shift solenoid valve SL1, SL2, SC1, SC2 or SC3 is malfunctioning, illuminates the MIL and stores this DTC.

HINT:

The C1 clutch operates by line pressure from the shift control valve SL1 when the shift control valve SC2 is ON, so if the shift control valves SC1 and SC3 that exist upstream of the shift control valve SC2 are stuck ON, a C1 clutch release malfunction occurs, resulting in the same malfunction.

If the shift solenoid SL2 is stuck ON, the line pressure from the shift control valve SL1 is cut off by the action of the clutch control valve of the C1 clutch, a C1 clutch release malfunction occurs.
When the ECM requests the shift mode to be changed to belt mode, the shift solenoid valve SL2 is turned ON and the C2 clutch is engaged. As a result, the secondary pulley speed becomes equal to the output shaft speed.
By comparing the secondary pulley revolution speed and output shaft revolution speed, the ECM judges if the shift mode is belt mode or not.

When the ECM requests the shift mode to be changed to belt mode, if the difference between the secondary pulley speed and output shaft speed is more than 300 rpm, it determines the shift solenoid valve SL2, SC1 or SC3 is malfunctioning, illuminates the MIL and stores this DTC.

HINT:

The C2 clutch operates by line pressure from shift control valve SL2, and if the shift control valves SC1 and SC3 that exist upstream of the shift control valve SL2 are stuck ON, a C2 clutch release malfunction occurs, resulting in the same malfunction.
When the shift solenoid valve SC2 turns ON, the shift solenoid valve SL1 controls the S1 synchronizer and moves it to the requested position according to the requested shift mode.
When the ECM detects that the S1 synchronizer is not in the appropriate position, it determines that the shift solenoid valve SL1, SC2 or shift stroke sensor is malfunctioning, illuminates the MIL and stores a DTC.

MONITOR STRATEGY

Related DTCs	P0746: Pressure control solenoid "A" (Shift solenoid valve SL1)/Functional check P076C: Shift solenoid "H" (Shift solenoid valve SC1)/Functional check P0776: Pressure control solenoid "B" (Shift solenoid valve SL2)/Functional check P08CD: Shift solenoid "J" (Shift solenoid valve SC2)/Functional check P08D7: Shift solenoid "K" (Shift solenoid valve SC3)/Functional check P0915 (OFF malfunction): Gear shift position (SFV)/Rationality fault diagnostics
Required sensors/Components	Crankshaft position sensor Transmission revolution sensor (NT) Transmission revolution sensor (NC1) Transmission revolution sensor (NSS) Gear shift position sensor Vehicle speed sensor 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 Shift solenoid valve SC1 Shift solenoid valve SC2 Shift solenoid valve SC3
Frequency of operation	Continuous
Duration	P0746: 2 sec. P076C: 2 sec. P0776: 2 sec. P08CD: 2 sec. P08D7: 2 sec. P0915 (OFF malfunction): Condition (A): 4 sec. Condition (B): 1 sec. Condition (C): 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)

Low voltage flag

OFF

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)

Gear shift position circuit

Not circuit malfunction

(MIL illuminated by following codes: P0916, P0917)

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)

Shift solenoid "H" circuit

(Shift solenoid valve SC1)

Not circuit malfunction

(MIL illuminated by following codes: P099E, P099F)

Shift solenoid "J" circuit

(Shift solenoid valve SC2)

Not circuit malfunction

(MIL illuminated by following codes: P08D2, P08D3)

Shift solenoid "K" circuit

(Shift solenoid valve SC3)

Not circuit malfunction

(MIL illuminated by following codes: P08DB, P08DC)

P0746:

All

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)

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)

Condition (A)

Shift position	"N" or "P" or "D" or "B"
Shift solenoid valve SLP	Operating shift control by ECM command
Engine speed	500 rpm or more

Condition (B)

Shift position	"N" or "P" or "D" or "B"
Shift solenoid valve SLP	Operating shift control by ECM command
Engine speed	500 rpm or more

Condition (C)

Shift solenoid valve SLP	Operating shift control by ECM 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

Condition (D)

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 ECM 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

P076C:

All

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)

Engine

Starting

Condition (A)

Shift solenoid valve SLP	Operating shift control by ECM 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

Condition (B)

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 ECM 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

Condition (C)

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

Condition (D) (1st judgment)

Tire	Not slipping
ECT	60°C (140°F) or more
Spark advance from MAX. retard timing by KCS control	0 °CA or more
Shift solenoid valve SLP	Operating shift control by ECM command
Engine speed	500 rpm or more
Primary sheave speed	100 rpm or more
Secondary sheave speed	150 rpm or more
Output speed	150 rpm or more
Transmission fluid temperature	-10°C (14°F) or more and less than 140°C (284°F)
Target clamping pressure - Actual clamping pressure	Less than 0.5 MPa (5.1 kgf/cm², 73 psi)
Any of the following conditions are met: (a) or (b)	-
(a) Gear mode clutch	Engaged
(b) Belt mode clutch	Engaged

Condition (D) (2nd judgment)

Tire	Not slipping
ECT	60°C (140°F) or more
Spark advance from MAX. retard timing by KCS control	0 °CA or more
Shift solenoid valve SLP	Operating shift control by ECM command
Engine speed	500 rpm or more
Primary sheave speed	100 rpm or more
Secondary sheave speed	150 rpm or more
Output speed	150 rpm or more
Transmission fluid temperature	-10°C (14°F) or more and less than 140°C (284°F)
Target clamping pressure - Actual clamping pressure	Less than 0.5 MPa (5.1 kgf/cm², 73 psi)
Any of the following conditions are met: (a) or (b)	-
(a) Gear mode clutch	Engaged
(b) Belt mode clutch	Engaged
Actual clamping pressure	0.4 MPa (4.1 kgf/cm², 58 psi) or more
Following condition is met once after 1st judgment	-
- Vehicle speed	Less than 10 km/h (6 mph)

P0776:

All

Pressure control solenoid "J" circuit

(Shift solenoid valve SLP)

Not circuit malfunction

(MIL illuminated by following codes: P2826, P2827)

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)

Engine

Starting

OFF malfunction

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

ON malfunction (A)

Shift solenoid valve SLP	Operating shift control by ECM 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

ON malfunction (B)

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 ECM 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

P08CD:

All

Pressure control solenoid "K" circuit

(Shift solenoid valve SLS)

Not circuit malfunction

(MIL illuminated by following codes: P282F, P2830)

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)

Condition (A)

Shift position	"N" or "P" or "D" or "B"
Shift solenoid valve SLP	Operating shift control by ECM command
Engine speed	500 rpm or more

Condition (B)

Shift position	"N" or "P" or "D" or "B"
Shift solenoid valve SLP	Operating shift control by ECM command
Engine speed	500 rpm or more

Condition (C)

Shift solenoid valve SLP	Operating shift control by ECM 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

Condition (D)

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 ECM 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

P08D7:

All

Transmission fluid pressure sensor "A" circuit

(Oil pressure sensor)

Not circuit malfunction

(MIL illuminated by following codes: P0842, P0843)

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)

Engine

Starting

Condition (A)

Shift solenoid valve SLP	Operating shift control by ECM 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

Condition (B)

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 ECM 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

Condition (C)

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

P0915 (OFF malfunction):

All

Transmission fluid temperature sensor "A" circuit

(CVT fluid temperature sensor)

Not circuit malfunction

(MIL illuminated by following codes: P0712, P0713)

Condition (A)

Shift position	"N" or "P" or "D" or "B"
Shift solenoid valve SLP	Operating shift control by ECM command
Engine speed	500 rpm or more

Condition (B)

Shift position	"N" or "P" or "D" or "B"
Shift solenoid valve SLP	Operating shift control by ECM command
Engine speed	500 rpm or more

Condition (C)

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 ECM 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

TYPICAL MALFUNCTION THRESHOLDS

P0746:

Any of the following conditions are met: Condition (A) and (D) or (B) and (D) or (C) and (D)

Condition (A)

All of the following conditions are met	4 sec.
- ECM indicate synchronizer	Engagement
- Synchronizer	Not engaged

Condition (B)

All of the following conditions are met: (a) or (b)	1 sec.
(a) ECM indicate synchronizer	Engagement hold mode
(b) Any of the following conditions are met: (1) or (2)	-
(1) All of the following conditions are met	-
- Gear or belt mode clutch	Engaged
- Synchronizer stroke move distance from engage point	2.2 mm (0.087 in.) or more
(2) All of the following conditions are met	-
- Gear and belt mode clutch	Not engaged
- Synchronizer stroke move distance from engage point	3.1 mm (0.122 in.) or more

Condition (C)

All of the following conditions are met	1 sec.
- ECM indicate gear mode clutch	Engagement
- Turbine speed - Gear mode clutch speed	More than 200 rpm

Condition (D) (after condition (A), (B) or (C) are met)

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

P076C:

Any of the following conditions are met: Condition (A) and (B) or (C) or (D)

Condition (A)

All of the following conditions are met	1 sec.
- ECM indicate gear mode clutch	Engagement
- Turbine speed - Gear mode clutch speed	More than 200 rpm

Condition (B) (after condition (A) is met)

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

Condition (C)

ECM indicate belt mode clutch	Engagement
Secondary sheave speed - Output speed	More than 300 rpm

Condition (D)

It is necessary 2 judgments per drive cycle. 2nd judgment: pending fault code ON
Target gear ratio	Less than 1.1
Actual gear ratio	1.8 or more

P0776:

OFF malfunction

ECM indicate belt mode clutch	Engagement
Secondary sheave speed - Output speed	More than 300 rpm

ON malfunction

ON malfunction (A) and (B) are met

ON malfunction (A)

All of the following conditions are met	1 sec.
- ECM indicate gear mode clutch	Engagement
- Turbine speed - Gear mode clutch speed	More than 200 rpm

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

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

P08CD:

Any of the following conditions are met: Condition (A) and (D) or (B) and (D) or (C) and (D)

Condition (A)

All of the following conditions are met	4 sec.
- ECM indicate synchronizer	Engagement
- Synchronizer	Not engaged

Condition (B)

All of the following conditions are met: (a) or (b)	1 sec.
(a) ECM indicate synchronizer	Engagement hold mode
(b) Any of the following conditions are met: (1) or (2)	-
(1) All of the following conditions are met	-
- Gear or belt mode clutch	Engaged
- Synchronizer stroke move distance from engage point	2.2 mm (0.087 in.) or more
(2) All of the following conditions are met	-
- Gear and belt mode clutch	Not engaged
- Synchronizer stroke move distance from engage point	3.1 mm (0.122 in.) or more

Condition (C)

All of the following conditions are met	1 sec.
- ECM indicate gear mode clutch	Engagement
- Turbine speed - Gear mode clutch speed	More than 200 rpm

Condition (D) (after condition (A), (B) or (C) are met)

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

P08D7:

Any of the following conditions are met: Condition (A) and (B) or (C)

Condition (A)

All of the following conditions are met	1 sec.
- ECM indicate gear mode clutch	Engagement
- Turbine speed - Gear mode clutch speed	More than 200 rpm

Condition (B) (after condition (A) is met)

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

Condition (C)

ECM indicate belt mode clutch	Engagement
Secondary sheave speed - Output speed	More than 300 rpm

P0915 (OFF malfunction):

Any of the following conditions are met: Condition (A) and (C) or (B) and (C)

Condition (A)

ECM indicate synchronizer	Engagement
Synchronizer	Not engaged

Condition (B)

All of the following conditions are met: (a) or (b)	-
(a) ECM indicate synchronizer	Engagement hold mode
(b) Any of the following conditions are met: (1) or (2)	-
(1) All of the following conditions are met	-
- Gear or belt mode clutch	Engaged
- Synchronizer stroke move distance from engage point	2.2 mm (0.087 in.) or more
(2) All of the following conditions are met	-
- Gear and belt mode clutch	Not engaged
- Synchronizer stroke move distance from engage point	3.1 mm (0.122 in.) or more

Condition (C) (after condition (A) or (B) are met)

Target clamping pressure	1.4 MPa (14.3 kgf/cm2, 203 psi) or more
Actual clamping pressure - Target 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

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.
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 / Engine / Utility / All Readiness.
Input the DTC: P07457F, P076A7E, P077571, P08CC7F, P08D57E or P09149F.

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.

CAUTION / NOTICE / HINT

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 P07457F, P076A7E, P077571, P08CC7F, P08D57E or P09149F are output, perform troubleshooting for those DTCs first.

PROCEDURE

1.	CHECK DTC OUTPUT

(a) Read the DTCs using the GTS.

Powertrain > Engine > Trouble Codes

Result	Proceed to
P09149F and only DTCs in the following table are output	A
Only DTCs in the following table are output	B
P076A7E and P281F71 are output	C
DTCs other than those listed above are output	D

Relevant DTC
P07457F	Pressure Control Solenoid "A" Actuator Stuck Off
P076A7E	Shift Solenoid "H" Control Actuator Stuck On
P077571	Pressure Control Solenoid "B" Actuator Stuck
P08CC7F	Shift Solenoid "J" Control Actuator Stuck Off
P08D57E	Shift Solenoid "K" Control Actuator Stuck On

GO TO STEP 3

GO TO DTC CHART (DTC P281F71)

GO TO DTC CHART

2.	INSPECT SHIFT STROKE SENSOR

Click here

REPLACE SHIFT STROKE SENSOR

3.	INSPECT TRANSMISSION VALVE BODY ASSEMBLY (SHIFT SOLENOID VALVE SL1, SL2, SC1, SC2 and SC3)

Pre-procedure1

(a) Disconnect the transmission wire connector from the shift solenoid valves SL1, SL2, SC1, SC2 and SC3

HINT:

Click here

Procedure1

(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 SL1 connector. Check that the valve moves and makes an operating sound.

*1	Transmission Valve Body Assembly	*2	Shift Solenoid Valve SL1
*3	Shift Solenoid Valve SL2	*4	Shift Solenoid Valve SC1
*5	Shift Solenoid Valve SC2	*6	Shift Solenoid Valve SC3
*a	Component without harness connected (Shift Solenoid Valve SL1 and SL2)	*b	Component without harness connected (Shift Solenoid Valve SC1, SC2 and SC3)

OK:

Valve moves and makes an operating sound.

(c) 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 SL2 connector. Check that the valve moves and makes an operating sound.

OK:

Valve moves and makes an operating sound.

(d) Connect a positive (+) lead from the battery to the terminal of the shift solenoid valve SC1 connector and a negative (-) lead to the shift solenoid valve SC1 body. Check that the valve moves and makes an operating sound.

OK:

Valve moves and makes an operating sound.

(e) Connect a positive (+) lead from the battery to the terminal of the shift solenoid valve SC2 connector and a negative (-) lead to the shift solenoid valve SC2 body. Check that the valve moves and makes an operating sound.

OK:

Valve moves and makes an operating sound.

(f) Connect a positive (+) lead from the battery to the terminal of the shift solenoid valve SC3 connector and a negative (-) lead to the shift solenoid valve SC3 body. Check that the valve moves and makes an operating sound.

OK:

Valve moves and makes an operating sound.

Post-procedure1

(g) None

GO TO STEP 5

4.	REPLACE CONTINUOUSLY VARIABLE TRANSAXLE ASSEMBLY

HINT:

Click here

PERFORM REGISTRATION AND INITIALIZATION

for Registration: Click here

for Initialization: Click here

5.	REPLACE TRANSMISSION VALVE BODY ASSEMBLY

HINT:

Click here

PERFORM REGISTRATION AND INITIALIZATION

for Registration: Click here

for Initialization: Click here