Subaru LEGACY 2006 Manual page 596

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Diagnostic Trouble Code (DTC) Detecting Criteria
BU:DTC P0500 VEHICLE SPEED SENSOR "A"
1. OUTLINE OF DIAGNOSIS
Judge as NG when outside of standard value. Judge NG when the received data from ABSCM&H/U is ab-
normal, and the vehicle speed data is impossible.
2. COMPONENT DESCRIPTION
Vehicle speed signals are taken in to the ABSCM&H/U, and OK/NG data of the vehicle speed, ABS wheel
speed sensor is received by CAN communication from the ABSCM&H/U.
3. ENABLE CONDITION
Secondary Parameters
Elapsed time after engine starting
Battery voltage
4. GENERAL DRIVING CYCLE
Perform the diagnosis continuously after 2 seconds or more have passed since the engine started.
5. DIAGNOSTIC METHOD
Abnormality Judgment
Judge as NG when the continuous time of completing the malfunction criteria below becomes 2.5 seconds
or more.
Judgment Value
Malfunction Criteria
Front ABS wheel speed sensor status
When either of the following is estab-
lished
Front left wheel speed
Front right wheel speed
Time Needed for Diagnosis: 2.5 seconds
Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
Normality Judgment
Judge as OK and clear the NG when all of the following criteria are established.
Malfunction Criteria
Front left wheel speed
Front right wheel speed
6. DTC CLEAR CONDITION
• When the OK idling cycle is completed 40 times in a row
• When Clear Memory is performed
7. MALFUNCTION INDICATOR LIGHT CLEAR CONDITION
• When the OK driving cycle is completed 3 times in a row
• When Clear Memory is performed
Enable Conditions
≥ 2 sec.
≥ 10.9 V
Threshold Value
Abnormal
≥ 300 km/h (186 MPH)
≥ 300 km/h (186 MPH)
Threshold Value
> 0 km/h (0 MPH) and
< 300 km/h (186 MPH)
> 0 km/h (0 MPH) and
< 300 km/h (186 MPH)
GD(H4SO)-159
GENERAL DESCRIPTION