CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM(for 8NR-FTS), Diagnostic DTC:P072012,P072014 and P072031

DTC Code	DTC Name
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	1. Diagnosis Condition 2. Malfunction Status 3. Malfunction Time 4. Other A transmission revolution sensor (NOUT) signal malfunction is not detected. The transmission revolution sensor (NOUT) output voltage is higher than 1.8 V. 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	1. Diagnosis Condition 2. Malfunction Status 3. Malfunction Time 4. Other A transmission revolution sensor (NOUT) signal malfunction is not detected. The transmission revolution sensor (NOUT) output voltage is less than 0.2 V. 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	1. Diagnosis Condition 2. Malfunction Status 3. Malfunction Time 4. Other The vehicle is driven with the shift lever in D, the output shaft speed is 300 rpm or more and no malfunctions of the park/neutral position switch assembly are detected. The output shaft speed indicated by the transmission revolution sensor (NOUT) is less than 300 rpm. 2 seconds 1-trip detection logic	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 in the transmission revolution sensor (NOUT) is malfunctioning, illuminate the MIL and store a DTC.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

Tip:

After performing repair, clear the DTCs and perform the following procedure to check that DTCs are not output.

Drive the vehicle for 2 seconds or more at 7 km/h (4 mph) or more with the shift lever in D.
Check for DTCs again.
Click here

PROCEDURE

READ VALUE USING GTS (NOUT SENSOR SPEED AND NOUT SENSOR VOLTAGE)

Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Enter the following menus: Powertrain / Transmission / Data List.

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	0.1 to 1.9 V: Engine idling (Vehicle stopped with shift lever in P or N)	-

Powertrain > Transmission > Data List


Tester Display
NOUT Sensor Speed
NOUT Sensor Voltage

Result


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

B

REPLACE ECMClick here

A

INSPECT TRANSMISSION REVOLUTION SENSOR (NOUT)

Remove the transmission revolution sensor (NOUT).
Click here

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

Wave a magnetic object 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.

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

*1	Battery	*2	Ammeter
*a	Component without harness connected (Transmission Revolution Sensor (NOUT))	*b	Magnet
*c	5 mm or less	-	-

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

Result


Proceed to
OK
NG

NG

REPLACE TRANSMISSION REVOLUTION SENSOR (NOUT)

Click here

OK

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

Disconnect the B112 transmission revolution sensor (NOUT) connector.
Disconnect the B208 ECM connector.

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

Standard Resistance


Tester Connection	Condition	Specified Condition
B112-1 (NOTO) - B208-74 (NOTO)	Always	Below 1 Ω
B112-2 (NOTB) - B208-73 (NOTB)	Always	Below 1 Ω
B112-1 (NOTO) or B208-74 (NOTO) - Body ground and other terminals	Always	10 kΩ or higher
B112-2 (NOTB) or B208-73 (NOTB) - Body ground and other terminals	Always	10 kΩ or higher

Connect the B208 ECM connector.
Connect the B112 transmission revolution sensor (NOUT) connector.

Result


Proceed to
OK
NG

NG

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

OK

REPLACE ECM

Replace the ECM.
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Result


Proceed to
NEXT

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REPLACE ECM

Replace the ECM.
Click here

Result


Proceed to
NEXT

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