Subaru 2006 Legacy, Manual

Page: 1385 / 4302

GD(H4SO U5)-159
Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
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
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.
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.
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
Secondary Parameters Enable Conditions
Elapsed time after engine starting
≥
2 sec.
Battery voltage
≥
10.9 V
Judgment Value
Malfunction Criteria Threshold Value
Front ABS wheel speed sensor status Abnormal
When either of the following is estab-
lished
Front left wheel speed
≥
300 km/h (186 MPH)
Front right wheel speed
≥
300 km/h (186 MPH)
Malfunction Criteria Threshold Value
Front left wheel speed > 0 km/h (0 MPH) and
< 300 km/h (186 MPH)
Front right wheel speed > 0 km/h (0 MPH) and
< 300 km/h (186 MPH)
asieps_tobira.book 159 ページ ２００９年１０月２６日 月曜日 午前９時１６分