Toyota CH-R Service Manual: Input / Turbine Speed Sensor "B" Circuit No Signal (P2767)

Toyota CH-R Service Manual / K114 Cvt / Continuously Variable Transaxle System / Input / Turbine Speed Sensor "B" Circuit No Signal (P2767)

DESCRIPTION

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

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Memory

P2767

Input / Turbine Speed Sensor "B" Circuit No Signal

While the vehicle is driven with the shift lever in D, and the output shaft speed is 300 rpm or more (vehicle speed is approximately 6 km/h (4 mph) 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

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 while the vehicle is moving, it will determine that there is a malfunction in the transmission revolution sensor (NIN), illuminate the MIL and store this DTC.

MONITOR STRATEGY

Related DTCs

P2767: Primary pulley speed sensor (NIN) / Verify pulse input

Required sensors/Components

Transmission revolution sensor (NIN)

Frequency of operation

Continuous

Duration Conditions

2 seconds

MIL operation

Immediately

Sequence of operation

None

TYPICAL ENABLING CONDITIONS

All of the following conditions are met :

Battery voltage

8 V or more

Time after Battery voltage 8 V or more

0.5 seconds or more

Write Inhibit

permit

Time after Write status forbiddance to permit

0.5 seconds or more

Ignition switch

ON

Time after Ignition switch OFF to ON

0.5 seconds or more

Starter

OFF

Time after Starter ON to OFF

0.5 seconds or more

Output shaft revolution

300 rpm or more

TYPICAL MALFUNCTION THRESHOLDS

Input Speed Sensor revolution

Less than 300 rpm

COMPONENT OPERATING RANGE

Input Speed Sensor revolution

300 rpm or more

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

  • Perform initialization after replacing any parts related to the continuously variable transaxle system.

    Click here

  • Check that no DTCs are stored after performing initialization.

    Click here

  • Perform the universal trip to clear permanent DTCs.

    Click here

HINT:

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

  1. Drive the vehicle for 2 seconds or more at 6 km/h (4 mph) or more with the shift lever in D.
  2. Check for DTCs again.

    Click here

PROCEDURE

1.

READ VALUE USING TECHSTREAM (SPD (NIN), ENGINE SPEED AND LOCK UP)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Powertrain / Engine and ECT / Data List.

Powertrain > Engine and ECT > Data List

Tester Display

Engine Speed

SPD (NIN)

Lock Up

(e) In accordance with the display on the Techstream, read the Data List.

Powertrain > Engine and ECT > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Engine Speed

Engine speed

Min.: 0 rpm

Max.: 16383 rpm

710 to 810 rpm: Idling

When the crankshaft position sensor is malfunctioning, "Engine Speed" is approximately 0 rpm or varies greatly from the actual engine speed.

SPD (NIN)

Primary pulley speed (NIN)

Min.: 0 rpm

Max.: 12750 rpm
  • 0 rpm: Vehicle stopped
  • Primary pulley speed (NIN) equal to engine speed (NE): Lock-up ON (After warming up engine)

Data is displayed in increments of 50 rpm.

Lock Up

Lock-up

OFF or ON
  • ON: Lock-up operating
  • OFF: Lock-up not operating

-

Result

Proceed to

Data display is not within Normal Condition range

A

Data display is within Normal Condition range

B
B

GO TO STEP 5

A

2.

INSPECT TRANSMISSION REVOLUTION SENSOR (NIN)

(a) Disconnect the C45 transmission revolution sensor (NIN) connector.

*a

Component without harness connected

(Transmission Revolution Sensor (NIN))

(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
NG

REPLACE TRANSMISSION REVOLUTION SENSOR (NIN)

OK

3.

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

(a) Disconnect the ECM connector.

*a

Front view of wire harness connector

(to ECM)

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

C63-123 (NIN+) - C63-124 (NIN-)

20°C (68°F)

560 to 680 Ω

C63-123 (NIN+) - Body ground and other terminals

Always

10 kΩ or higher

C63-124 (NIN-) - Body ground and other terminals

Always

10 kΩ or higher
NG

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

4.

REPLACE ECM

(a) Replace the ECM.

Click here

NEXT

PERFORM INITIALIZATION

5.

REPLACE ECM

(a) Replace the ECM.

Click here

NEXT

PERFORM INITIALIZATION

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