DTC P0500 Vehicle Speed Sensor "A"
DESCRIPTION
The speed sensor detects the wheel speed and sends the appropriate signals to the skid control ECU.
The skid control ECU converts these wheel speed signals into a 4-pulse signal and outputs it to the ECM via the combination meter. The ECM determines the vehicle speed based on the frequency of these pulse signals.
MONITOR DESCRIPTION
The ECM assumes that the vehicle is being driven when the transmission counter gear indicates more than 300 rpm and over 30 seconds have passed since the park / neutral position switch was turned OFF.
If thre is no signal from the vehicle speed sensor with these conditions satisfied, the ECM concludes that the vehicle speed sensor is malfunctioning. The ECM will turn on the MIL and a DTC will be set.
MONITOR STRATEGY
TYPICAL ENABLING CONDITIONS
TYPICAL MALFUNCTION THRESHOLDS
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT: Read freeze frame data using the intelligent tester. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can be helpful in determining whether the vehicle was running or stopped, whether the engine was warmed up or not, whether the air-fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction.
1 CHECK SPEEDOMETER
HINT:
2 READ VALUE OF INTELLIGENT TESTER (VEHICLE SPEED)
OK: Vehicle speeds displayed on tester and speedometer display are equal.
3 CHECK COMBINATION METER ASSEMBLY (+S VOLTAGE)
Standard voltage
4 CHECK COMBINATION METER ASSEMBLY (SPD SIGNAL WAVEFORM)
Standard voltage
HINT: The output voltage should fluctuate up and down, similarly to the diagram, when the wheel is turned slowly.
5 CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - ECM)
Standard resistance (Check for open)
Standard resistance (Check for short)
REPLACE ECM
Installation
1. INSTALL TIRE PRESSURE WARNING VALVE AND TRANSMITTER
(a) Insert the tire pressure warning valve and
transmitter into the valve installation hole. Insert it
from the inside of the rim so that the printed surface
can be seen.
NOTICE:
Check that there is no visible deformation,
damage, ...
Brake Switch
DESCRIPTION
The stop light switch is a duplex system that transmits two signals: STP and
ST1-. These two signals are
used by the ECM to monitor whether or not the brake system is working properly.
If the signals, which
indicate the brake pedal is being depressed or released, are detected ...
How to proceed with
troubleshooting
HINT:
Troubleshooting of the wireless door lock control system is
based on the premise that the power door lock system, the
power slide door system, the power back door system and
the power window system are operating normally.
Therefore, before troubleshooting the wireless door lo ...