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

K313 CVT  CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM  P276531  Input/Turbine Speed Sensor "B" No Signal  


DESCRIPTION

The ECM detects the input shaft speed based on the signal from the revolution sensor (transmission revolution sensor (NIN)) and performs gear ratio control.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note
P276531 Input/Turbine Speed Sensor "B" No Signal While the vehicle is driven with the shift lever in D and the SPD signal is 300 rpm or more, the speed indicated by the transmission revolution sensor (NIN) is less than 300 rpm for 2 seconds (1-trip detection logic).
·

Wire harness or connector

·

Transmission revolution sensor (NIN)

·

ECM


Comes on DTC stored SAE Code:
P2767

MONITOR DESCRIPTION

The ECM receives a signal from the transmission revolution sensor (NIN) installed to the continuously variable transaxle and determines the input shaft speed in order to control the gear ratio. If the ECM detects no signal from the transmission revolution sensor (NIN) even though the vehicle is moving, it will determine that the transmission revolution sensor (NIN) is malfunctioning, illuminate the MIL and store this 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: P276531.

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

C318999E15
0.25,2.813 4.073,3.01 3.823,0.198 10 false Transmission Revolution Sensor (NIN) 5.979,3.073 6.885,3.344 0.906,0.271 10 false ECM 1.677,1.135 2.292,1.333 0.615,0.198 10 false NIN+ 5.667,1.135 6.281,1.333 0.615,0.198 10 false NIN+ 5.667,2.104 6.281,2.302 0.615,0.198 10 false NIN- 1.698,2.104 2.313,2.302 0.615,0.198 10 false NIN- 5.417,1.135 6.031,1.333 0.615,0.198 10 false 44 2.083,1.135 2.698,1.333 0.615,0.198 10 false 2 2.083,2.104 2.698,2.302 0.615,0.198 10 false 1 5.406,2.104 6.021,2.302 0.615,0.198 10 false 43 5.979,2.917 6.594,3.115 0.615,0.198 10 false C78 0.24,2.656 0.854,2.854 0.615,0.198 10 false C74 6.292,0.948 6.75,1.146 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 (ENGINE SPEED, NIN SENSOR SPEED AND LOCK UP STATUS)
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
Engine Speed Engine speed Min.: 0 rpm
Max.: 16383 rpm 		680 to 780 rpm: Engine idling (shift lever in N, engine warmed up and A/C switch off) When the crankshaft position sensor is malfunctioning, "Engine Speed" is approximately 0 rpm or varies greatly from the actual engine speed.
NIN Sensor Speed Primary pulley speed (NIN) Min.: 0 rpm
Max.: 12750 rpm
·

0 rpm: Vehicle stopped

·

Equal to engine speed (NE): Lock-up ON (After warming up engine)


Data is displayed in increments of 50 rpm.
Lock Up Status Lock-up OFF or ON
·

ON: Lock-up operating

·

OFF: Lock-up not operating


-
Powertrain > Transmission > Data List
Tester Display
Engine Speed
NIN Sensor Speed
Lock Up Status
50003 373 211,364,178

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



A

2.INSPECT TRANSMISSION REVOLUTION SENSOR (NIN)

B

5.REPLACE ECM
2.INSPECT TRANSMISSION REVOLUTION SENSOR (NIN)
a.
C221276C07
1.177,1.792 1.292,1.792 1.292,1.792 1.458,1.281 true 2.271,1.792 2.156,1.792 2.156,1.792 1.99,1.281 true 0.177,0.219 0.365,0.406 0.188,0.188 10 *a 0.802,1.719 1.156,1.896 0.354,0.177 10 NIN+ 2.323,1.719 2.646,1.875 0.323,0.156 10 NIN-
*a Component without harness connected
(Transmission Revolution Sensor (NIN))


Disconnect the C74 transmission revolution sensor (NIN) connector.


b.

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

Standard Resistance:
Tester Connection Condition Specified Condition
1 (NIN-) - 2 (NIN+) 20°C (68°F) 560 to 680 Ω



c.

Connect the C74 transmission revolution sensor (NIN) connector.


Result:
Proceed to
OK
NG



OK

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

NG

REPLACE TRANSMISSION REVOLUTION SENSOR (NIN)

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


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

Disconnect the C78 ECM connector.


b.

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

Standard Resistance:
Tester Connection Condition Specified Condition
C78-44 (NIN+) - C78-43 (NIN-) 20°C (68°F) 560 to 680 Ω
C78-44 (NIN+) - Body ground and other terminals Always 10 kΩ or higher
C78-43 (NIN-) - Body ground and other terminals Always 10 kΩ or higher



c.

Connect the C78 ECM connector.


Result:
Proceed to
OK
NG



OK

4.REPLACE ECM

NG

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