DTC P0734 GEAR 4 INCORRECT RATIO
|
|
DTC P0734 GEAR 4 INCORRECT RATIO
|
Judge NG when the expected present gear is
different from the actual gear.
|
Secondary
Parameters
|
Enable
Conditions
|
Throttle
angle
|
≥ 15°
|
Vehicle
speed
|
≥ 10
km/h (6 MPH)
|
Range
switch
|
“D”, “3”, “2” or “1”
|
Upshift
or downshift events
|
Not in
operation
|
Always perform the diagnosis with less than
10 km/h (6 MPH) vehicle speeds.
Perform the diagnosis when the conditions
below are not completed for more than 40 milliseconds on normal control.
|
1.
|
Vehicle speed is more than 10 km/h
(6 MPH).
|
|
2.
|
Throttle sensor is more than a certain
angle.
|
|
3.
|
Shifted to “D”, “3”, “2” or “1” range,
and range signal is normal.
|
|
4.
|
More than 1 second passed after shift
change finished.
|
Judgment
Value
|
Malfunction
Criteria
|
Threshold
Value
|
GR/(4th
gear ratio)
|
> 110% or < 90%
|
Where,
|
|
GR = (Vehicle
speed sensor 1 output)/(Turbine shaft speed sensor output)
|
|
Time Needed for Diagnosis:
3
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
|
None
|
ECM OPERATION
AT DTC SETTING
|
Memorize the freeze frame data. (For test
mode $02)
