DTC P0720 OUTPUT SPEED SENSOR CIRCUIT
|
|
DTC P0720 OUTPUT SPEED SENSOR CIRCUIT
|
Judge NG when an abnormal large signal is
input to the front vehicle speed sensor, or no signal is input to the
rear vehicle speed sensor.
This vehicle speed sensor (output shaft speed
sensor) is installed to the outside of transmission case.
This sensor detects the front wheel speed,
and transmits the sine wave signal (32 pulses per rev.) to TCM.
TCM converts the signal to pulse signal,
and transmits to both of the ECM and the combination meter.
|
Secondary
Parameters
|
Enable
Conditions
|
Vehicle
speed
|
≥ 20
km/h (12 MPH)
|
Always perform the diagnosis with more than
20 km/h (12 MPH) vehicle speed.
Judgment
Value
|
Malfunction
Criteria
|
Threshold
Value
|
Vehicle
speed sensor
|
|
Front
|
≥ 255
km/h (158 MPH)
|
Rear
|
= 0
km/h (0 MPH)
|
Front vehicle
speed sensor(During vehicle running at 20 km/h)
|
= 0
km/h (0 MPH)
|
Time Needed for Diagnosis:
63.75
seconds
Malfunction Indicator
Light Illumination:
Illuminates when malfunction occurs in
2 continuous driving cycles.
|
•
|
When the OK idling cycle was completed 40 times
in a row
|
|
•
|
When “Clear Memory” was
performed
|
|
MALFUNCTION
INDICATOR LIGHT CLEAR CONDITION
|
|
•
|
When the OK driving cycle was completed 3 times
in a row
|
|
•
|
When “Clear Memory” was
performed
|
|
•
|
Use the normal vehicle speed sensor signal
when either of them is normal.
|
|
•
|
Use the vehicle speed calculated from
the current gear position and turbine speed when both front and rear
wheels are troubled.
|
|
ECM OPERATION
AT DTC SETTING
|
Memorize the freeze frame data. (For test
mode $02)
