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):
|
|
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):
|
|
Comes on |
DTC stored |
SAE Code: P2829 |
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:
|
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) |
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 |
- l Variation of the accelerator pedal angle l (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 |
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 |
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 |
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 |
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 |
- l Variation of the accelerator pedal angle l (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 |
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 |
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 |
- l Variation of the accelerator pedal angle l (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 |
Any of the following conditions are met: (a) or (b) |
- |
(a) Gear mode clutch |
Engaged |
(b) Belt mode clutch |
Engaged |
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 |
Gear and belt mode clutch |
Either engagement or disengagement |
TYPICAL MALFUNCTION THRESHOLDS
P0841:
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) |
TCM indicate gear mode clutch |
Engagement |
l Turbine Speed - Gear mode clutch speed l |
More than 200 rpm |
TCM indicate synchronizer |
Engagement |
Synchronizer |
Not engaged |
TCM indicate lock-up clutch |
Engagement |
l Engine speed - Turbine speed l |
250 rpm or more |
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 |
*: 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 |
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 |
*: 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) |
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:
Click here
Click here
HINT:
[*1]: Normal judgment procedure.
The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
GTS Display |
Description |
---|---|
NORMAL |
|
ABNORMAL |
|
INCOMPLETE |
|
N/A |
|
HINT:
WIRING DIAGRAM
Refer to DTC P084011.
Click here
CAUTION / NOTICE / HINT
CAUTION:
NOTICE:
Click here
Click here
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) Enter the following menus:
Powertrain > Transmission > Trouble Codes(b) Read the DTCs using the GTS.
HINT:
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 |
B |
GO TO STEP 6 |
C |
GO TO STEP 8 |
D |
GO TO DTC CHART (DTC P084011) |
E |
GO TO DTC CHART (DTC P084015) |
F |
GO TO DTC CHART (DTC P282812) |
G |
GO TO DTC CHART (DTC P282814) |
H |
GO TO DTC CHART |
|
2. |
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:
(a) Warm up the engine.
(b) 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.
(c) Enter the following menus:
(d) According to the display on the GTS, 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 |
|
(e) Enter the following menus:
(f) 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:
|
- |
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 |
A |
CHECK FOR INTERMITTENT PROBLEMS Click here Click here |
|
3. |
CHECK TCM (VCPT TERMINAL VOLTAGE) |
(a) Disconnect the oil pressure sensor connector. |
|
(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) |
Ignition switch ON |
4.75 to 5.25 V |
(c) Connect the oil pressure sensor connector.
NG |
GO TO STEP 5 |
|
4. |
REPLACE OIL PRESSURE SENSOR |
Click here
NEXT |
PERFORM INITIALIZATION |
5. |
REPLACE TCM |
Click here
NEXT |
PERFORM REGISTRATION AND INITIALIZATION for Registration: Click here for Initialization: Click here |
6. |
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:
(a) Warm up the engine.
(b) 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.
(c) Enter the following menus:
(d) According to the display on the GTS, 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 |
|
(e) Enter the following menus:
(f) 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:
|
- |
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 |
A |
CHECK FOR INTERMITTENT PROBLEMS Click here Click here |
|
7. |
REPLACE CONTINUOUSLY VARIABLE TRANSAXLE ASSEMBLY |
Click here
NEXT |
PERFORM REGISTRATION AND INITIALIZATION for Registration: Click here for Initialization: Click here |
8. |
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:
(a) Warm up the engine.
(b) 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.
(c) Enter the following menus:
(d) According to the display on the GTS, 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 |
|
(e) Enter the following menus:
(f) 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:
|
- |
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 |
A |
CHECK FOR INTERMITTENT PROBLEMS Click here Click here |
|
9. |
CHECK TCM (VCPT TERMINAL VOLTAGE) |
(a) Disconnect the oil pressure sensor connector. |
|
(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) |
Ignition switch ON |
4.75 to 5.25 V |
(c) Connect the oil pressure sensor connector.
NG |
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
*1 |
Transmission Valve Body Assembly |
*2 |
Shift Solenoid Valve SLS |
*a |
Component without harness connected (Shift Solenoid Valve SLS) |
- |
- |
(b) Connect a positive (+) lead from the auxiliary 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.
NG |
GO TO STEP 12 |
|
11. |
REPLACE OIL PRESSURE SENSOR |
Click here
NEXT |
PERFORM INITIALIZATION |
12. |
REPLACE CONTINUOUSLY VARIABLE TRANSAXLE ASSEMBLY |
Click here
NEXT |
PERFORM REGISTRATION AND INITIALIZATION for Registration: Click here for Initialization: Click here |
13. |
REPLACE TCM |
Click here
NEXT |
PERFORM REGISTRATION AND INITIALIZATION for Registration: Click here for Initialization: Click here |