P0717
DTC P0717 INPUT SPEED SENSOR CIRCUIT - NO SIGNALCOMPONENT LOCATION:
GENERAL DESCRIPTION
The input (turbine) speed sensor outputs pulse-signals according to the revolutions of the input shaft of the transmission. The TCM determines the input shaft speed by counting the frequency of the pulses. This value is mainly used to control the optimum fluid pressure during shifting.
DTC DESCRIPTION
The TCM sets this code if an output pulse-signal is not detected, from the input speed sensor, when the output pulse signal is detected over the 24 pulse. The Fail-Safe function will be set by the TCM if this code is detected.
DTC DETECTING CONDITION:
SCHEMATIC DIAGRAM:
MONITOR SCANTOOL DATA
1. Connect scan tool to data link connector (DLC).
2. Engine "ON".
3. Monitor the "INPUT SPEED SENSOR" parameter on the Scantool.
4. Driving at speed of over 19 Mile/h (30 Km/h).
Specification: Increasing Gradually
5. Does "Input speed sensor" follow the reference data?
YES
- Fault is intermittent caused by poor contact in the sensor's and/or TCM (PCM)'s connector or was repaired and TCM (PCM) memory was not cleared. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration or damage. Repair or replace as necessary and go to "Verification of Vehicle Repair" procedure.
NO
- Go to "Terminal and connector inspection" procedure.
TERMINAL AND CONNECTOR INSPECTION
1. Many malfunctions in the electrical system may be caused from poor harness and terminal condition. These faults can be caused by interference from other electrical systems and mechanical or chemical damage.
2. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.
3. Has a problem been found?
YES
- Repair as necessary and go to "Verification of vehicle repair" procedure.
NO
- Go to "Signal circuit inspection" procedure.
SIGNAL CIRCUIT INSPECTION
1. Engine "OFF" IG KEY "OFF".
2. Remove the TCU.
3. Perform the continuity test between INPUT SPEED SENSOR sensor terminal and chassis ground.
Specification: Not continuity
4. Is resistance within specifications?
YES
- Substitute with a known-good PCM/TCM and check for proper operation. If the problem is corrected, replace PCM/TCM as necessary and then go to "Verification of Vehicle Repair" procedure.
NO
- Replace "TRANSAXLE FLUID TEMPERATURE SENSOR" as necessary and Go to "Verification of Vehicle Repair" procedure.
NOTE: When replacing the TCU, must perform the N position learning and the Initial learning.
VERIFICATION OF VEHICLE REPAIR
After a repair, it is essential to verify that the fault has been corrected.
1. Connect scan tool and select "Diagnostic Trouble Codes (DTCs)" mode.
2. Using a scan tool, Clear DTC.
3. Operate the vehicle within DTC Enable conditions in General information.
4. Is resistance within specification?
YES
- Go to the applicable troubleshooting procedure.
NO
- System performing to specification at this time.