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

K313 CVT  CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM  P072012  Output Speed Sensor Circuit Short to Battery  P072014  Output Speed Sensor Circuit Short to Ground or Open  P072031  Output Speed Sensor No Signal  


DESCRIPTION

The ECM receives a signal from the transmission revolution sensor (NOUT) installed to the continuously variable transaxle and determines the output shaft (secondary pulley) speed in order to control the gear ratio.

The transmission revolution sensor (NOUT) detects the continuously variable transaxle output shaft (secondary pulley) speed and sends a signal to the ECM.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note
P072012 Output Speed Sensor Circuit Short to Battery There is no malfunction in transmission revolution sensor (NOUT) signals, and the transmission revolution sensor (NOUT) output voltage is higher than 1.8 V for 2 seconds (1-trip detection logic).
·

Wire harness or connector

·

Transmission revolution sensor (NOUT)

·

ECM


Comes on DTC stored SAE Code:
P077D
P072014 Output Speed Sensor Circuit Short to Ground or Open There is no malfunction in transmission revolution sensor (NOUT) signals, and the transmission revolution sensor (NOUT) output voltage is less than 0.2 V for 2 seconds (1-trip detection logic)
·

Wire harness or connector

·

Transmission revolution sensor (NOUT)

·

ECM


Comes on DTC stored SAE Code:
P077C
P072031 Output Speed Sensor No Signal All of the following conditions are met (1-trip detection logic):
·

Vehicle is driven with the shift lever in D

·

The SPD signal is 300 rpm or more

·

Input turbine speed indicated by the transmission revolution sensor (NT) is 1050 rpm or more

·

No malfunctions are found in the park/neutral position switch assembly

·

Output shaft speed indicated by the transmission revolution sensor (NOUT) is less than 300 rpm for 2 seconds


·

Wire harness or connector

·

Transmission revolution sensor (NOUT)

·

ECM


Comes on DTC stored SAE Code:
P0722

MONITOR DESCRIPTION

The ECM receives a signal from the transmission revolution sensor (NOUT) installed to the continuously variable transaxle and determines the output shaft (secondary pulley) speed in order to control the gear ratio.

If the ECM detects no signal from the transmission revolution sensor (NOUT) even while the vehicle is moving, it will determine that the transmission revolution sensor (NOUT) is malfunctioning, illuminate the MIL and store a DTC.

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 hereDrivetrain>K313 (CVT)>CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM>DTC CHECK / CLEAR



1.

Connect the GTS to the DLC3.

2.

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

3.

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

4.

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

5.

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

6.

Start the engine.

7.

Perform the D Position Shift Test inspection in Road Test. [*1]

Click hereDrivetrain>K313 (CVT)>CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM>ROAD TEST

HINT:

[*1]: Normal judgment procedure.

The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.


8.

Stop the vehicle.

9.

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

10.

Input the DTC: P072012, P072014 or P072031.

11.

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

C318994E23
0.25,2.844 3.771,3.042 3.521,0.198 10 false Transmission Revolution Sensor (NOUT) 5.979,3.042 6.5,3.333 0.521,0.292 10 false ECM 5.656,1.135 6.375,1.49 0.719,0.354 10 false NOTB 5.406,1.135 5.865,1.333 0.458,0.198 10 false 73 2.083,1.125 2.542,1.323 0.458,0.198 10 false 2 1.604,1.125 2.167,1.365 0.563,0.24 10 false NOTB 1.594,2.104 2.135,2.333 0.542,0.229 10 false NOTO 2.073,2.104 2.531,2.302 0.458,0.198 10 false 1 5.406,2.104 5.865,2.302 0.458,0.198 10 false 74 5.656,2.104 6.115,2.302 0.458,0.198 10 false NOTO 5.979,2.896 6.438,3.094 0.458,0.198 10 false C78 0.25,2.677 0.708,2.875 0.458,0.198 10 false C68 6.302,0.958 6.76,1.156 0.458,0.198 10 false 12 V

CAUTION / NOTICE / HINT

CAUTION:
·
A371909

Strictly observe posted speed limits, traffic laws and road conditions.

·

Do not drive the vehicle with the cable of the GTS contacting the pedals, shift lever or steering wheel.

·

Driving the vehicle with the cable of the GTS contacting these areas could impede vehicle control, resulting in a serious accident.


·
A356953

Do not operate the GTS while driving the vehicle.

·

Operating the GTS while driving the vehicle will prevent you from paying sufficient attention to vehicle surroundings, and could result in a serious accident.



NOTICE:
·

Perform the universal trip to clear permanent DTCs.

Click hereDrivetrain>K313 (CVT)>CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM>DTC CHECK / CLEAR

·

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

Click hereDrivetrain>K313 (CVT)>CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM>INITIALIZATION

·

Check that no DTCs are stored after performing initialization.

Click hereDrivetrain>K313 (CVT)>CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM>DTC CHECK / CLEAR



PROCEDURE

1.READ VALUE USING GTS (NOUT SENSOR SPEED AND NOUT SENSOR VOLTAGE)
a.

Connect the GTS to the DLC3.


b.

Turn the ignition switch to ON.


c.

Turn the GTS on.


d.

Enter the following menus: Powertrain / Transmission / Data List.


e.

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

Powertrain > Transmission > Data List
Tester Display Measurement Item Range Normal Condition Diagnostic Note
NOUT Sensor Speed Secondary pulley speed (NOUT) Min.: 0 rpm
Max.: 12750 rpm
·

0 rpm: Vehicle stopped

·

Approximately 2500 rpm: Vehicle being driven at approximately 60 km/h (37 mph)


Data is displayed in increments of 50 rpm.
NOUT Sensor Voltage Transmission revolution sensor (NOUT) output voltage Min.: 0.000 V
Max.: 4.999 V 		0.2 to 1.8 V: Engine idling (Vehicle stopped with shift lever in P or N) -
Powertrain > Transmission > Data List
Tester Display
NOUT Sensor Speed
NOUT Sensor Voltage
50003 373 365,366

Result:
Result Proceed to
Data List values are not normal A
Data List values are normal B



A

2.INSPECT TRANSMISSION REVOLUTION SENSOR (NOUT)

B

5.REPLACE ECM
2.INSPECT TRANSMISSION REVOLUTION SENSOR (NOUT)
a.

Remove the transmission revolution sensor (NOUT).

Click hereDrivetrain>K313 (CVT)>REVOLUTION SENSOR>REMOVAL


b.

Connect the battery to the transmission revolution sensor (NOUT) as shown in the illustration.

C154686C44
6.073,1.521 6.292,1.927 true 3.521,0.552 3.823,0.552 false 2.427,0.625 2.656,0.625 2.656,0.625 2.729,0.542 false 5.594,1.51 5.396,1.927 true 0.688,0.302 0.927,0.469 0.24,0.167 10 false *2 6.156,1.969 6.615,2.146 0.458,0.177 10 false NOTO 5.208,1.969 5.698,2.135 0.49,0.167 10 false NOTB 2.281,0.552 2.365,0.771 0.083,0.219 10 false 2 3.854,0.49 3.948,0.635 0.094,0.146 10 false 1 0.656,1.333 0.844,1.5 0.188,0.167 10 false *1 2.604,2.083 2.792,2.292 0.188,0.208 10 false *c 4.302,1.417 4.49,1.625 0.188,0.208 10 false *b 5.188,0.542 5.375,0.75 0.188,0.208 10 false *a
*1 Battery *2 Ammeter
*a Component without harness connected
(Transmission Revolution Sensor (NOUT)) 		*b Magnet
*c 5 mm or less - -



c.

Wave a magnet left and right 5 mm (0.197 in.) or less from the tip of the transmission revolution sensor (NOUT) to output a high/low signal while measuring the current.

NOTICE:

Make sure to wave the magnet during the inspection. The current will not change unless the magnet is moved as shown in the illustration.



d.

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

Standard Current:
Tester Connection Condition Specified Condition
1 (NOTO) - 2 (NOTB) Low signal 4 to 8 mA
1 (NOTO) - 2 (NOTB) High signal 12 to 16 mA



e.

Install the transmission revolution sensor (NOUT).

Click hereDrivetrain>K313 (CVT)>REVOLUTION SENSOR>INSTALLATION


Result:
Proceed to
OK
NG



OK

3.CHECK HARNESS AND CONNECTOR (TRANSMISSION REVOLUTION SENSOR (NOUT) - ECM)

NG

REPLACE TRANSMISSION REVOLUTION SENSOR (NOUT)

Click hereDrivetrain>K313 (CVT)>REVOLUTION SENSOR>COMPONENTS


3.CHECK HARNESS AND CONNECTOR (TRANSMISSION REVOLUTION SENSOR (NOUT) - ECM)
a.

Disconnect the C68 transmission revolution sensor (NOUT) connector.


b.

Disconnect the C78 ECM connector.


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
C68-1 (NOTO) - C78-74 (NOTO) Always Below 1 Ω
C68-2 (NOTB) - C78-73 (NOTB) Always Below 1 Ω
C68-1 (NOTO) or C78-74 (NOTO) - Body ground and other terminals Always 10 kΩ or higher
C68-2 (NOTB) or C78-73 (NOTB) - Body ground and other terminals Always 10 kΩ or higher



d.

Connect the C78 ECM connector.


e.

Connect the C68 transmission revolution sensor (NOUT) connector.


Result:
Proceed to
OK
NG



OK

4.REPLACE ECM

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR (TRANSMISSION REVOLUTION SENSOR (NOUT) - ECM)