AUTOMATIC TRANSMISSION SYSTEM, Diagnostic DTC:P0500, P0502, P0503

DTC Code DTC Name
P0500 Vehicle Speed Sensor "A"
P0502 Vehicle Speed Sensor "A" Circuit Low
P0503 Vehicle Speed Sensor "A" Intermittent / Erratic / High

DESCRIPTION

The transmission revolution sensor (SP2) detects the output shaft rotation speed and sends it to the TCM.

Based on the transmission revolution sensor (NT) signal and the transmission revolution sensor (SP2) signal, the TCM controls engine torque and shift timing.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory
P0500 Vehicle Speed Sensor "A"

1. Diagnosis Condition 2. Malfunction Status 3. Malfunction Time 4. Other


  1. 3 seconds or more after turning engine switch on (IG), +B voltage is 0 V or more

  2. Transmission revolution sensor (SP2) signal is not input

  3. 2 seconds (intake temperature -10°C (14°F) or more); or 8 seconds (intake temperature less than -10°C (14°F))

  4. 1-trip detection logic

  • Transmission revolution sensor (SP2)

  • Transmission wire

  • Harness and connector

  • TCM

 Comes on DTC stored
P0502 Vehicle Speed Sensor "A" Circuit Low

1. Diagnosis Condition 2. Malfunction Status 3. Malfunction Time 4. Other


  1. 3 seconds or more after turning engine switch on (IG), +B voltage is 0 V or more

  2. Transmission revolution sensor (SP2) input signal voltage is less than 0.1 V

  3. 2 seconds

  4. 1-trip detection logic

  • Transmission revolution sensor (SP2)

  • Transmission wire

  • Harness and connector

  • TCM

 Comes on DTC stored
P0503 Vehicle Speed Sensor "A" Intermittent / Erratic / High

1. Diagnosis Condition 2. Malfunction Status 3. Malfunction Time 4. Other


  1. 3 seconds or more after turning engine switch on (IG), +B voltage is 0 V or more

  2. Transmission revolution sensor (SP2) input signal voltage is more than 1.9 V

  3. 2 seconds

  4. 1-trip detection logic

  • Transmission revolution sensor (SP2)

  • Transmission wire

  • Harness and connector

  • TCM

 Comes on DTC stored

MONITOR DESCRIPTION

The transmission revolution sensor (SP2) monitors the output shaft speed.

The TCM controls the gearshift point and the lock up timing based on the signals from the transmission revolution sensor (SP2) and throttle position sensor.

If the TCM detects no signal from the transmission revolution sensor (SP2) even while the vehicle is moving, it will conclude that is a malfunction of the transmission revolution sensor (SP2).

The TCM will illuminate the MIL and store a DTC.

WIRING DIAGRAM

B0066GHE11
*a Transmission Revolution Sensor (SP2)
*b Transmission Wire

CAUTION / NOTICE / HINT

Note

Perform registration and/or initialization when parts related to the automatic transmission are replaced.

Click here

Tech Tips

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


  1. Turn the engine switch on (IG) and wait for 3 seconds or more.

  2. Perform the D Position Shift Test in Road Test.

    Click here

  3. Check for DTCs again.

    Click here


  1. DATA LIST

    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.

    Tech Tips

    Using the GTS 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.


    1. Warm up the engine.

    2. Turn the engine switch off.

    3. Connect the GTS to the DLC3.

    4. Turn the engine switch on (IG).

    5. Turn the GTS on.

    6. Enter the following menus: Powertrain / ECT / Data List / SPD (SP2).

    7. Read the Data List according to the display on the GTS.


      Powertrain > ECT > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      SPD (SP2) Output shaft speed

      Min.: 0 km/h (0 mph)

      Max.: 255 km/h (158 mph)

      Vehicle stopped: 0 km/h (0 mph)

      (output shaft speed is equal to vehicle speed)

      		 -

      Powertrain > ECT > Data List
      Tester Display
      SPD (SP2)

      Tech Tips


      • SPD (SP2) is always 0 while driving: Open or short in the sensor or circuit.

      • The SPD (SP2) value displayed on the GTS is much lower than the actual vehicle speed: Sensor malfunction, improper installation, or intermittent connection malfunction of the circuit.

    Inspection Procedure
    Transmission Control Switch Test With the vehicle stationary and the shift lever in D, move the shift lever to M and return it to D. Check that the meter display changes from D to the appropriate M and then back again.
    M Position Test While driving with the shift lever in M, operate the shift paddle to "+" and "-". Check that the meter display changes accordingly.
    D Position Shift Test While driving the vehicle normally, check that the transmission shifts up and down through each gear properly.
    Lock-up Function While driving on a level surface at a constant speed in the lock-up range with the shift lever in D, lightly depress the accelerator pedal and check that the engine speed does not change abruptly.
    P Position Test Stop the vehicle on an incline (approximately 5° or more). Then move the shift lever to P and release the parking brake. Check that the parking lock pawl holds the vehicle in place.
    Abnormal Noise and Vibration Check for abnormal noise and vibration while driving the vehicle forward and backward, and during shift operations.
    Fluid Leakage After performing all other road test inspections, check for fluid leakage.

PROCEDURE


  1. READ VALUE USING GTS (SP2 SENSOR VOLTAGE)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / ECT / Data List / SP2 Sensor Voltage.

    5. Read the Data List according to the display on the GTS.


      Powertrain > ECT > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      SP2 Sensor Voltage SP2 sensor voltage

      Min.: 0.000 V

      Max.: 5.000 V

      		 Idling: 0.1 to 1.9 V -

      Powertrain > ECT > Data List
      Tester Display
      SP2 Sensor Voltage
      Result
      Result Proceed to
      Data List value is normal A
      Data List value is not normal B

    A

    GO TO STEP 5 Click here

    B

  2. CHECK TRANSMISSION REVOLUTION SENSOR TERMINAL (SP2 TERMINAL)


    1. B00658BC26
      *a

      Front view of wire harness connector

      (to Transmission Wire)

      Disconnect the F25 transmission wire connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F25-22 (SP2O) - Body ground Always 99 to 101 Ω

    3. Turn the engine switch on (IG).

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      F25-21 (SP2B) - Body ground Engine switch on (IG) 11 to 14 V
      Result
      Proceed to
      OK
      NG

    NG

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

    OK

  3. INSPECT TRANSMISSION WIRE (TRANSMISSION REVOLUTION SENSOR (SP2))


    1. B0065MKC04
      *a

      Front view of wire harness connector

      (to Transmission Revolution Sensor (SP2))
      *b

      Component without harness connected

      (Transmission Wire)

      Disconnect the transmission revolution sensor (SP2) connector.

      Click here

    2. Disconnect the F25 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 transmission revolution sensor (SP2) connector - 21 (SP2B) Always Below 1 Ω
      Terminal 2 of the transmission revolution sensor (SP2) connector - 22 (SP2O) Always Below 1 Ω
      Terminal 1 of the transmission revolution sensor (SP2) connector or 21 (SP2B) - Body ground Always 10 kΩ or higher
      Terminal 2 of the transmission revolution sensor (SP2) connector or 22 (SP2O) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE TRANSMISSION REVOLUTION SENSOR (SP2) Click here

    NG

    REPAIR OR REPLACE TRANSMISSION WIRE Click here

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


    1. Disconnect the F25 transmission wire connector.

    2. Disconnect the F8 TCM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F25-21 (SP2B) - F8-23 (SP2B) Always Below 1 Ω
      F25-22 (SP2O) - F8-22 (SP2O) Always Below 1 Ω
      F25-21 (SP2B) or F8-23 (SP2B) - Body ground Always 10 kΩ or higher
      F25-22 (SP2O) or F8-22 (SP2O) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (TRANSMISSION WIRE - TCM)

    OK

  5. REPLACE TCM


    1. Replace the TCM.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

    PERFORM A/T CODE REGISTRATION Click here