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 (PCM) 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 (PCM) sets this code if an output pulse-signal is not detected, from the input speed sensor, when the vehicle is running faster than 30 km/h. The Fail-Safe function will be set by the TCM (PCM) if this code is detected.
DTC DETECTING CONDITION
DTC DETECTING CONDITION:
SPECIFICATION
Input shaft & Output shaft speed sensor
- 40 Type: Hall sensor
- Current consumption: 22mA (MAX) 40
- sensor body and sensor connector have been unified as one.
SCHEMATIC DIAGRAM
SCHEMATIC DIAGRAM:
SIGNAL WAVEFORM
SIGNAL WAVEFORM:
MONITOR SCAN TOOL DATA
1. Connect SCAN TOOL to data link connector (DLC).
2. Engine ON.
3. Monitor the INPUT SPEED SENSOR parameter on the SCAN TOOL
4. Driving at speed of over 30 km/h (19 mph).
Specification: Increasing Gradually
Specification:
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 & Connector Inspection procedure.
TERMINAL & CONNECTOR INSPECTION
1. Many malfunctions in the electrical system may be caused from poor harness and terminals. 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 Supply circuit inspection procedure.
SIGNAL CIRCUIT INSPECTION
1. Ignition ON & Engine OFF.
2. Disconnect the INPUT SPEED SENSOR connector.
3. Measure voltage between terminal 2 of the INPUT SPEED SENSOR harness connector and chassis ground.
Specification: approximately 5V
Specification:
4. Is voltage within specification?
YES > Go to Power Supply circuit Inspection procedure.
NO > Check for open or short in harness. Repair as necessary and Go to Verification Vehicle Repair' procedure. If signal circuit in harness is OK, Go to Check TCM (PCM) of the Component Inspection procedure.
POWER SUPPLY CIRCUIT INSPECTION
1. Ignition ON & Engine OFF.
2. Disconnect the INPUT SPEED SENSOR connector.
3. Measure voltage between terminal 3 of the INPUT SPEED SENSOR harness connector and chassis ground.
Specification: approximately B+
Specification:
4. Is voltage within specification?
YES > Go to Ground circuit inspection procedure.
NO > Check for open in harness. Repair as necessary and Go to Verification of Vehicle Repair procedure.
GROUND CIRCUIT INSPECTION
1. Ignition ON & Engine OFF.
2. Disconnect the INPUT SPEED SENSOR connector.
3. Measure resistance between terminal 1 of the INPUT SPEED SENSOR harness connector and chassis ground.
Specification: approximately 0 Ohms
Specification:
4. Is resistance within specification?
YES > Go to Component Inspection procedure.
NO > Check for open in harness. Repair as necessary and Go to Verification of Vehicle Repair procedure. If ground circuit in harness is OK, Go to Check TCM (PCM) of the Component Inspection procedure.
COMPONENT INSPECTION
1. Check INPUT SPEED SENSOR
1. Ignition OFF.
2. Disconnect the INPUT SPEED SENSOR connector.
3. Measure resistance between terminal 1,2 and 2,3 and 1,3 of the INPUT SPEED SENSOR connector.
Specification: Refer to Reference data
Specification:
4. Is resistance within specifications?
[REFERENCE DATA]
REFERENCE DATA:
YES > Go to CHECK TCM (PCM).
NO > Replace INPUT SPEED SENSOR as necessary and Go to Verification of Vehicle Repair procedure.
2. CHECK TCM (PCM)
1. Ignition ON & Engine OFF.
2. Connect INPUT SPEED SENSOR connector.
3. Install SCAN TOOL and select a SIMU-SCAN.
4. Simulate frequency to INPUT SPEED SENSOR signal circuit.
5. Is INPUT SPEED SENSOR signal value changed according to simulation frequency?
YES > Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and then go to Verification of Vehicle Repair procedure.
NO > Substitute with a known-good TCM (PCM) and check for proper operation. If the problem is corrected, replace TCM (PCM) as necessary and then go to Verification of Vehicle Repair procedure.
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.