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DTC P0502 ASCD VEHICLE SPEED SENSOR
EC-1651
[YD (WITHOUT EURO-OBD)]
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EC
DTC P0502 ASCD VEHICLE SPEED SENSOR PFP:24810
Component Description BBS002BZ
The ECM receives vehicle speed sensor signal via CAN communication line. It is sent from combination
meter. The ECM uses this signal for ASCD control. Refer to EC-1819, "
AUTOMATIC SPEED CONTROL
DEVICE (ASCD)" for ASCD functions.
On Board Diagnosis Logic BBS002C0
The MI will not light up for this self-diagnosis.
NOTE:
● If DTC P0502 is displayed with DTC U1000 first perform the trouble diagnosis for DTC U1000. Refer
to EC-1530, "
DTC U1000 CAN COMMUNICATION LINE" .
● If DTC P0502 is displayed with DTC P0606 first perform the trouble diagnosis for DTC P0606. Refer
to EC-1679, "
DTC P0606 ECM" .
DTC Confirmation Procedure BBS002C1
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Step 3 may be conducted with the drive wheels lifted in the shop or by driving the vehicle. If a road test
is expected to be easier, it is unnecessary to lift the vehicle.
WITH CONSULT-II
1. Start engine and warm it up to normal operating temperature (ESP switch OFF).
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Maintain the following condition for at least 5 seconds.
4. If DTC is detected, go to EC-1652, "
Diagnostic Procedure" .
DTC No.
Trouble Diagnosis
Name
DTC Detecting Condition Possible Cause
P0502
0502
Vehicle speed sen-
sor circuit low input
Vehicle speed signal is excessively low com-
pared with the driving condition.
● Harness or connectors
(The CAN communication line is open or
shorted.)
● Combination meter
● ABS actuator and electric unit (control unit)
(models without ESP)
● ESP/TCS/ABS control unit (models with ESP)
● Wheel sensor
● ECM
CKPS·RPM (TDC) More than 2,800 rpm
COOLAN TEMP/S More than 60°C (140 °F)
Clutch pedal Fully released
Shift lever 1st position
MBIB1084E
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