DTC    P0500/42    Vehicle Speed Sensor Malfunction

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DESCRIPTION

The vehicle speed sensor (SP1) outputs a 4 pulse signal for every revolution of the rotor shaft, which is rotated by the transmission output shaft via the driven gear. After this signal is converted into a more precise rectangular waveform by the waveform shaping circuit inside the combination meter, it is then transmitted to the TCM. The TCM determines the vehicle speed based on the frequency of these pulse signals.

DTC No.
DTC Detection Condition
Trouble Area
P0500/42
  1. All conditions below are detected 500 times or more continuously (2 trip detection logic):
    1. No signal from vehicle speed sensor (SP1) is input to TCM if either of following condition is met:
      1. L4 switch is ON and 123 pulses of No. 2 speed sensor (SP2) signal are sent
      2. L4 switch is OFF and 48 pulses of No. 2 speed sensor (SP2) signal are sent
    2. Vehicle speed is 9 km/h (5.6 mph) or more for at least 4 seconds
    3. PNP switch is OFF (shift lever not on P or N)
    4. Transfer shift lever is not on N
  1. Open or short in vehicle speed sensor (SP1) circuit
  2. Vehicle speed sensor (SP1)
  3. Combination meter
  4. TCM

WIRING DIAGRAM


A099781E04


INSPECTION PROCEDURE


When using intelligent tester:

HINT:
Read freeze frame data using the intelligent tester. Freeze frame data records the engine conditions when a malfunction is detected. When troubleshooting, freeze frame data can help determine if the vehicle was running or stopped, if the engine was warmed up or not, and other data from the time the malfunction occurred.

1.READ DATA LIST (VEHICLE SPEED)

  1. Connect the intelligent tester to the DLC3.

  1. Start the engine and turn the intelligent tester ON.

  1. Enter the following menus: Powertrain / ECT / Data List / Vehicle SPD.

  1. Check the vehicle speed at an engine speed of 2,000 rpm or more while the vehicle is running.

    OK:
    Same value as actual vehicle speed.



YES
CHECK FOR INTERMITTENT PROBLEMS
NO


2.CHECK OPERATION OF SPEEDOMETER

  1. Check the speedometer reading in the combination meter.

    HINT:
    If the vehicle speed sensor has any malfunctions, the speedometer shows abnormal readings.

    OK:
    Speedometer operates normally.



NG
CHECK SPEEDOMETER CIRCUIT (INCLUDING SPEED SENSOR)
OK


3.CHECK TCM (SP1 SIGNAL)
G034866E01

  1. While idling, check the waveform of the TCM connectors using an oscilloscope.

  1. Move the shift lever to N.

  1. Jack up one of the rear wheels.

  1. Turn the ignition switch ON.

  1. Measure the voltage of the TCM connectors as the wheel is turned slowly.

    Standard:
    Item
    		Content
    Tester Connection
    		T17-25 (SP1) - Body ground
    Tool Setting
    		5 V/DIV., 20 msec./DIV.
    Condition
    		Turn the rear wheel slowly

    HINT:
    When the wheel is turning slowly, voltage is output intermittently.



NG
REPAIR OR REPLACE HARNESS AND CONNECTOR
OK

REPLACE TCM 


When not using intelligent tester:

1.CHECK OPERATION OF SPEEDOMETER

  1. Check the speedometer reading in the combination meter.

    HINT:
    If the vehicle speed sensor has any malfunctions, the speedometer shows abnormal readings.

    OK:
    Speedometer operates normally.



NG
CHECK SPEEDOMETER CIRCUIT (INCLUDING SPEED SENSOR)
OK


2.CHECK TCM
G034866E01

  1. While idling, check the waveform of the TCM connectors using an oscilloscope.

  1. Move the shift lever to N.

  1. Jack up one of the rear wheels.

  1. Turn the ignition switch ON.

  1. Measure the voltage of the TCM connectors as the wheel is turned slowly.

    Standard:
    Item
    		Content
    Tester Connection
    		T17-25 (SP1) - Body ground
    Tool Setting
    		5 V/DIV., 20 msec./DIV.
    Condition
    		Turn the rear wheel slowly

    HINT:
    When the wheel is turning slowly, voltage is output intermittently.



NG
REPAIR OR REPLACE HARNESS AND CONNECTOR
OK

REPLACE TCM