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DTC P0716 INPUT/TURBINE SPEED SENSOR CIRCUIT RANGE/PERFORMANCE

DTC P0716 INPUT/TURBINE SPEED SENSOR CIRCUIT RANGE/PERFORMANCE

OUTLINE OF DIAGNOSIS

Judge NG when the turbine speed signal is not transmitted for some reasons.

COMPONENT DESCRIPTION

Torque converter turbine speed sensor (output shaft speed sensor) is installed to the outside of transmission case. This sensor detects the turbine speed of torque converter by the peripheral speed of high clutch drum connected to input shaft. And then it transmits the sine wave signal (32 pulses per rev.) to TCM. TCM calculates the ratio of the input shaft speed to vehicle speed, and then makes a judgment whether to shift or not.

ENABLE CONDITION

Secondary Parameters Enable Conditions
Engine speed

≥ 1,500 rpm

Vehicle speed

≥ 40 km/h (25 MPH)

Range switch

“D”, “3”, “2” or “1”



GENERAL DRIVING CYCLE

Always perform the diagnosis continuously.

DIAGNOSTIC METHOD

Perform the diagnosis when the conditions below were continued for 2 seconds.


1. Except “P”, “N”, “R” ranges and inhibitor switch is normal.

2. Engine speed is more than 3,000 rpm.

3. Vehicle speed is 30 km/h (19 MPH) and vehicle speed sensor is normal.

4. Turbine speed is more than 600 rpm.


Judgment Value

Malfunction Criteria Threshold Value
Output from turbine shaft speed

< 600 rpm



Time Needed for Diagnosis: 2 seconds

Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.

DTC CLEAR CONDITION


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


FAIL SAFE

None

ECM OPERATION AT DTC SETTING

Memorize the freeze frame data. (For test mode $02)