P0716
DTC P0716 or P0717
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis Strategy Based Diagnosis for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions Diagnostic Procedure Instructions provides an overview of each diagnostic category.
DTC Descriptors
DTC P0716
- Input Speed Sensor Performance
DTC P0717
- Input Speed Sensor Circuit Low Voltage
Diagnostic Fault Information
Typical Scan Tool Data
Circuit/System Description
The input speed sensor (ISS) is a hall-effect type sensor. The ISS mounts to the inside of the automatic transmission case assembly and connects to the control solenoid valve assembly through a 2-wire harness and connector. The sensor faces the reluctor wheel which is attached to the 4-5-6 clutch and 3-5-R clutch housing. The sensor receives 8.3-9.3 volts on the ISS supply voltage circuit from the transmission control module (TCM). As the 4-5-6 clutch and 3-5-R clutch housing rotates, the sensor produces a signal frequency based on the teeth of the reluctor wheel. This signal is transmitted through the ISS signal circuit to the TCM. The TCM uses the ISS signal to determine line pressure, transmission shift patterns, torque converter clutch (TCC) slip speed, and gear ratio.
Conditions for Running the DTC
P0716
* DTC P0101, P0102, P0103, P0121, P0122, P0123, P0716, P0717, P0752, P0973, or P0974 is not set.
* Engine speed is 400 RPM or greater for 5 seconds.
* Ignition voltage is 8.6 volts or greater.
* Engine torque signal is valid.
* Throttle position signal is valid.
P0717
* DTC P0717 is not set.
* Engine speed is 400 RPM or greater for 5 seconds.
* Ignition voltage is 8.6 volts or greater.
* Vehicle speed is 16 km/h (10 mph) or greater.
* Engine torque is 50 Nm (37 lb ft) or greater.
* Engine torque signal is valid.
Conditions for Setting the DTC
P0716
Transmission input speed drops 1,350 RPM for 1.0 second and does not recover.
P0717
Transmission input shaft speed is less than 50 RPM for 5.0 seconds.
Action Taken When the DTC Sets
* DTCs P0716 and P0717 are Type A DTCs.
* TCM freezes transmission adaptive functions.
* TCM commands the high side driver OFF.
* TCM commands TCC OFF.
* TCM commands maximum line pressure.
* TCM disables neutral idle.
* TCM inhibits Tap Up/Down function.
* TCM inhibits manual shifting of forward gears.
* TCM limits the transmission to Reverse and 5th gear operation.
Conditions for Clearing the DTC
DTCs P0716 and P0717 are Type A DTCs.
Diagnostic Aids
Damage or misalignment of the 4-5-6 clutch and 3-5-R clutch housing reluctor machined teeth surface may cause a speed sensor malfunction.
Reference Information
Schematic Reference
Automatic Transmission Controls Schematics Electrical Diagrams
Connector End View Reference
* Component Connector End Views A/C Compressor Clutch
* Inline Harness Connector End Views X101
Description and Operation
Electronic Component Description Electronic Component Description for input speed sensor (ISS)
Electrical Information Reference
* Circuit Testing Circuit Testing
* Connector Repairs Connector Repairs
* Testing for Intermittent Conditions and Poor Connections Testing for Intermittent Conditions and Poor Connections
* Wiring Repairs Wiring Repairs
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Scan Tool Reference
Control Module References Control Module References for scan tool information
Circuit/System Verification
1. Ignition ON, verify with a scan tool the transmission ISS/OSS Supply Voltage parameter displays OK.
• If the parameter value displays Fault or Malfunction
Refer to Circuit/System Testing below.
• If the parameter value displays OK
2. Engine idling in Park, while varying the engine speed, verify the scan tool Transmission ISS parameter varies with the engine speed and there are no spikes or dropouts.
• If the parameter value does not vary with engine speed or has spikes or dropouts.
Refer to Circuit/System Testing below.
• If the parameter value varies with engine speed and there are no spikes or dropouts.
3. Perform the Road Test Initial Inspection and Diagnostic Overview. Verify that DTC P0716 or P0717 did not set.
• If DTC P0716 or P0717 set
Refer to Circuit/System Testing below.
• If DTC P0716 or P0717 did not set
4. After performing the above steps, verify that the DTC does not reset by operating the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions you observe from the Freeze Frame/Failure Records data. If the vehicle passes the Circuit/System Verification procedure, then STOP. Do not perform the Circuit/System Testing or Component Testing as this may result in an unnecessary part replacement. Refer to Testing for Intermittent Conditions and Poor Connections Testing for Intermittent Conditions and Poor Connections.
Circuit/System Testing
Note: You must perform the Circuit/System Verification first.
1. Ignition OFF, remove the control valve body cover. Refer to Control Valve Body Cover Replacement Control Valve Body Cover Replacement.
2. Connect the vehicle wire harness X1 20-way transmission electrical connector to the Q8 control solenoid valve assembly electrical connector.
3. Disconnect the B14C transmission input shaft speed sensor wiring harness connector X3 from the Q8 control solenoid valve assembly.
4. Ignition ON.
5. Test for 8.3-9.3 volts between the ISS voltage circuit terminal A X3, on the Q8 control solenoid valve assembly, and ground at the transmission case.
• If not between 8.3-9.3 volts
Replace the Q8 control solenoid valve assembly. Refer to Control Solenoid Valve and Transmission Control Module Assembly Replacement Service and Repair.
• If between 8.3-9.3 volts
6. Perform the Control Solenoid Valve and Transmission Control Module Assembly Input Shaft Speed/Output Shaft Speed Input Test Control Solenoid Valve and Transmission Control Module Assembly Input Shaft Speed/Output Shaft Speed Input Test.
• If the Q8 control solenoid valve assembly does not pass the Input Shaft Speed/Output Shaft Speed Input Test
Replace the Q8 control solenoid valve assembly.
• If the Q8 control solenoid valve assembly passes the Input Shaft Speed/Output Shaft Speed Input Test
7. Inspect the reluctor, which is attached to the 4-5-6 clutch and 3-5-R clutch housing assembly, for damage or misalignment with the B14C transmission input shaft speed sensor.
• If the reluctor is damaged or there is improper alignment
Repair or replace as necessary.
• If the reluctor is not damaged and alignment checks OK
8. Replace the B14C transmission input shaft speed sensor.
Repair Instructions
Note:
* Perform the Reset Transmission Adapts Reset Transmission Adapts following all transmission related repairs.
Input Speed Sensor Replacement Input Speed Sensor Replacement
* Before replacing the TCM, perform the Control Solenoid Valve and Transmission Control Module Assembly Inspection Control Solenoid Valve and Transmission Control Module Assembly Inspection.
Perform the Diagnostic Repair Verification Verification Tests after completing the diagnostic procedure.
Control Module References Control Module References for control solenoid valve assembly replacement, setup, and programming