COMPONENT LOCATION
GENERAL DESCRIPTION
Vehicle Speed Sensor(VSS) is hall sensor type and senses the rotating speed of differential gear mounted on transaxle.Comparing engine speed with vehicle speed calculated based on vehicle speed sensor signal, ECM recognizes engaged gear. And based on the information about engaged gear, ECM performs optimum fuel injection quantity correction. VSS signal is also used in speed meter of cluster, ETACS(or BCM), aircon control module, navigation system, etc.
DTC DESCRIPTION
P0501 is set when vehicle speed below 13.8Km/h is detected for more than 1 sec. at above 4000RPM and above 38.25 mg/hub of fuel injection quantity
DTC DETECTING CONDITION
Item | Detecting Condition | Possible Cause |
DTC Strategy | Signal monitoring (Vehicle speed not plausible with injection mass and engine speed)
| Vehicle speed sensor circuit Vehicle speed sensor component
|
Enable Conditions | While driving
|
Threshold Value | When vehicle speed below 13.8Km/h is detected for more than 1.0 sec. at above 4000RPM and above 38.5 cc of fuel injection quantity.
|
Diagnostic Time | 1.0 sec
|
Fail Safe | Fuel cut | NO | |
EGR Off | NO |
Fuel Limit | NO |
Check Lamp | NO |
SCHEMATIC DIAGRAM
SIGNAL WAVEFORM AND DATA
SPECIFICATION
Sensing Type | LOW Signal Voltage | HIGH Signal Voltage | Signal Duty |
Hall sensor type | below 1.5V | above 3.5V | 50±5% |