P0717
Circuit Description with 4T80-E Automatic TransaxleSchematic:
The Automatic Transmission Input (shaft) Speed Sensor (AT ISS) is a permanent magnet with a coil of wire wound around it. The AT ISS mounts in the transmission case facing the drive sprocket of the input shaft. An air gap of 0.045-0.109 in. between the sensor and the drive sprocket must be maintained so that an accurate AC voltage can be transmitted. Sensor voltage varies from 0.5 volts AC at 100 RPM to more than 100 volts at 8000 RPM. The AT ISS has a resistance value of 1300-1950 ohms.
If the PCM detects a low input speed while the vehicle and engine speeds are high, then DTC P0717 sets. DTC P0717 is a type B DTC.
CONDITIONS FOR RUNNING THE DTC
^ No VSS DTCs P0502 or P0503.
^ No IMS DTCs P1820, P1822, P1823, or P1825.
^ The system voltage is 8-18 volts.
^ The engine run time is greater than 5 seconds.
^ The engine is not in fuel cut off.
^ The transmission is not in PARK or NEUTRAL.
^ The vehicle speed is greater than 16 km/h (10 mph).
CONDITIONS FOR SETTING THE DTC
The input (shaft) speed is less than 51 RPM for 6 seconds.
ACTION TAKEN WHEN THE DTC SETS
^ The PCM illuminates the Malfunction Indicator Lamp (MIL) during the second consecutive trip in which the Conditions for Setting the DTC are met.
^ The PCM commands maximum line pressure.
^ The PCM inhibits TCC engagement.
^ The PCM calculates input (shaft) speed from vehicle speed and commanded gear.
^ The PCM records the operating conditions when the Conditions for Setting the DTC are met. The PCM stores this information as Freeze Frame and Failure Records.
^ The PCM stores DTC P0717 in PCM history during the second consecutive trip in which the Conditions for Setting the DTC are met.
CONDITIONS FOR CLEARING THE MIL/DTC
^ The PCM turns OFF the MIL during the third consecutive trip in which the diagnostic test runs and passes.
^ A scan tool can clear the MIL/DTC.
^ The PCM clears the DTC from PCM history if the vehicle completes 40 warm-up cycles without an emission-related diagnostic fault occurring.
^ The PCM cancels the DTC default actions when the fault no longer exists and/or the ignition switch is OFF long enough in order to power down the PCM.
DIAGNOSTIC AIDS
^ Inspect the connectors at the PCM, the AT ISS and all other circuit connecting points for an intermittent condition. Refer to Testing for Intermittent and Poor Connections in Diagrams.
^ Inspect the circuit wiring for an intermittent condition. Refer to Testing for Electrical Intermittents in Diagrams.
TEST DESCRIPTION
Steps 1 - 4:
Steps 5 - 11:
The numbers below refer to the step numbers on the diagnostic table.
3. This step tests the AT ISS for correct resistance.
10. Replace the PCM only after completing all circuit tests.