AUTOMATIC TRANSMISSION SYSTEM, Diagnostic DTC:P2765, P2767

DTC Code DTC Name
P2765 Input / Turbine Speed Sensor "B" Circuit
P2767 Input / Turbine Speed Sensor "B" Circuit No Signal

DESCRIPTION

The speed sensor (NC3) detects the automatic transmission's No. 3 clutch drum rotation speed.

A01GMQDE01
DTC Code

DTC Detection Condition


  1. Diagnosis Condition

  2. Malfunction Status

  3. Malfunction Time

  4. Other

 Trouble Area
P2765

  1. With the PNP switch and speed sensor (NC3) in normal condition, the output shaft speed is 1000 rpm or more (when changing to 7th gear, the output wheel speed is 1400 rpm or more)

  2. Speed sensor (NC3) output voltage is below 0.1 V, or 1.9 V or higher

  3. 4.5 seconds

  4. 1 trip detection logic

  • Speed sensor (NC3)

  • Transmission wire

  • Harness and connector

  • TCM
P2767

  1. With the PNP switch and speed sensor (NC3) in normal condition, the output shaft speed is 1000 rpm or more (when changing to 7th gear, the output shaft speed is 1400 rpm or more)

  2. Speed sensor (NC3) sensor value is less than 300 rpm

  3. 5 seconds

  4. 1 trip detection logic

  • Speed sensor (NC3)

  • Transmission wire

  • Harness and connector

  • TCM

MONITOR DESCRIPTION

The NT terminal of the TCM detects a pulse signal from the speed sensor (NT) (input rpm). The TCM calculates gear shifts comparing the speed sensor (NT) with the speed sensor (SP2).

If the sensor voltage is below 0.1 V or higher than 1.9 V, the TCM interprets this as a fault, illuminates the MIL and stores the DTC.

Also, while the vehicle is operating in 3rd, 4th, 5th, 6th or 7th gear with the shift lever in D, if the input shaft speed is less than 300 rpm*1 although the output shaft speed is more than 1,000 rpm*2, the TCM interprets this as a fault, illuminates the MIL and stores the DTC.

*1: A pulse is not output or is irregularly output.

*2: The vehicle speed is 50 km/h (31 mph) or more.

WIRING DIAGRAM

A01GHT5E01

INSPECTION PROCEDURE

Tech Tips

Using the intelligent tester to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time.

Note

In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not.


  1. Warm up the engine.

  2. Turn the engine switch off.

  3. Connect the intelligent tester to the DLC3.

  4. Turn the engine switch on (IG).

  5. Turn the intelligent tester on.

  6. Enter the following menus: Powertrain / ECT / Data List.

  7. According to the display on the tester, read the Data List.

    TCM
    Tester Display Measurement Item/Range Normal Condition Diagnostic Note
    SPD (NC3)

    No. 3 clutch drum speed/

    Min.: 0 rpm

    Max.: 12750 rpm

    • 0 rpm: 2nd or 8th gear

    • Above 0 rpm: 1st, or 3rd to 7th gear

    		 Data is displayed in increments of 50 rpm.

    Tech Tips


    • SPD (NC3) is always 0 while driving: Open or short in the sensor or circuit.

    • SPD (NC3) is always more than 0 and less than 300 rpm while driving the vehicle at 50 km/h (31 mph) or more: Sensor trouble, improper installation, or intermittent connection trouble of the circuit.

PROCEDURE


  1. CHECK SPEED SENSOR TERMINAL (NC3 TERMINAL)


    1. A01GO0BE03

      Disconnect the E50 transmission wire connector.

    2. Turn the engine switch on (IG).

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      E50-11 (NC3B) - Body ground Engine switch on (IG) 11 to 14 V

    4. Turn the engine switch off.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      E50-12 (NC3O) - Body ground Always 100 Ω

    NG

    CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - TCM) Click here

    OK

  2. INSPECT TRANSMISSION WIRE (SPEED SENSOR NC3)


    1. A01GLGIE03

      Disconnect the speed sensor (NC3) connector.

    2. Disconnect the E50 transmission wire connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      Terminal 1 of the speed sensor (NC3) connector - 11 (NC3B) Always Below 1 Ω
      Terminal 2 of the speed sensor (NC3) connector - 12 (NC3O) Always Below 1 Ω
      Terminal 1 of the speed sensor (NC3) connector or 11 (NC3B) - Body ground Always 10 kΩ or higher
      Terminal 2 of the speed sensor (NC3) connector or 12 (NC3O) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE TRANSMISSION WIRE Click here

    OK

    REPLACE SPEED SENSOR Click here

  3. CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - TCM)


    1. A01GMANE13

      Disconnect the E50 transmission wire connector.

    2. Disconnect the E7 TCM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      E50-11 (NC3B) - E7-28 (NC3B) Always Below 1 Ω
      E50-12 (NC3O) - E7-22 (NC3O) Always Below 1 Ω
      E50-11 (NC3B) or E7-28 (NC3B) - Body ground Always 10 kΩ or higher
      E50-12 (NC3O) or E7-22 (NC3O) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. REPLACE TCM


    1. Replace the TCM Click here.


    NEXT

    PERFORM A/T CODE REGISTRATION Click here