P07BF
DTC P0716, P0717, P07BF, or P07C0
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 No Signal
DTC P07BF
- Input Speed Sensor Circuit Low Voltage
DTC P07C0
- Input Speed Sensor Circuit High 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 assembly. The sensor receives battery voltage on the input speed sensor 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.
* Vehicle speed is 10 km/h (6 mph) or greater.
* Engine speed is greater than 400 RPM for 5 seconds.
* Ignition voltage is 9.0 volts or greater.
* Engine torque signal is valid.
* Throttle position signal is valid.
P0717
* DTC P0101, P0102, P0103, P0717, P0722, or P0723 is not set.
* Engine speed is greater than 400 RPM for 5 seconds.
* Ignition voltage is 9.0 volts or greater.
* Vehicle speed is 16 km/h (10 mph) or greater.
* Engine torque is 50 Nm (37 lb ft) or greater.
P07BF or P07C0
Ignition voltage is 9.0 volts or greater.
Conditions for Setting the DTC
P0716
Transmission input speed drops 1,350 RPM for greater than 1 second and does not recover.
P0717
Transmission input shaft speed is less than 67 RPM for 5 seconds when output speed is detected.
P07BF
Transmission ISS analog signal voltage is 0.25 volts or less for 4 seconds.
P07C0
Transmission ISS analog signal voltage is 4.75 volts or greater for 4 seconds.
Action Taken When the DTC Sets
P0716
* DTC P0716 is a Type A DTC.
* TCM freezes transmission adaptive functions.
* TCM forces TCC OFF.
* TCM inhibits neutral idle.
* TCM inhibits Tap-Up/Tap-Down functions.
* TCM inhibits manual up, manual down shifts with the shift selector.
* TCM commands maximum line pressure.
* TCM enables torque management.
* TCM limits the transmission to reverse and 5th gear.
* TCM commands the high side driver off.
P0717
* DTC P0717 is a Type A DTC.
* TCM freezes transmission adaptive functions.
* TCM forces TCC OFF.
* TCM commands maximum line pressure.
* TCM inhibits neutral idle.
* TCM inhibits Tap-Up/Tap-Down functions.
* TCM inhibits manual up, manual down shifts with the shift selector.
* TCM limits the transmission to reverse and 4th gear.
P07BF or P07C0
* DTCs P07BF and P07C0 are Type A DTCs.
* TCM freezes transmission adaptive functions.
* TCM commands maximum line pressure.
* TCM inhibits neutral idle.
* TCM inhibits Tap-Up/Tap-Down functions.
* TCM inhibits manual up, manual down shifts with the shift selector.
* TCM limits the transmission to reverse and 4th gear.
Conditions for Clearing the DTC
DTCs P0716, P0717, P07BF, and P07C0 are Type A DTCs.
Diagnostic Aids
Inspect the ISS harness and connector for metallic debris and the reluctor wheel for damage or misalignment.
Reference Information
Schematic Reference
Automatic Transmission Controls Schematics Electrical Diagrams
Connector End View Reference
* Component Connector End Views Fuel Pump and Level Sensor Assembly
* Inline Harness Connector End Views X100
Description and Operation
* Transmission General Description Transmission General Description
* Transmission Component and System Description Transmission Component and System Description
* Electronic Component Description Electronic Component Description
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
Special Tools
* DT-48616-10 - Adapter Harness
* EL 38522 - Variable Signal Generator
For equivalent regional tools, refer to Special Tools 6T30/6T40/6T45/6T50 - Automatic Transmission.
Circuit/System Verification
1. Ignition ON.
2. Verify with a scan tool the transmission ISS/OSS Supply Voltage test status parameter displays OK.
• If the parameter value displays Fault or Malfunction
Refer to Circuit/System Testing below.
• If the parameter value displays OK
3. Engine idling in PARK, while varying the engine speed, observe the Transmission ISS parameter. The parameter should vary with the engine speed and there should not be any 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
4. Perform the Road Test Initial Inspection and Diagnostic Overview.
5. Verify with a scan tool DTC P0716, P0717, P07BF, or P07C0 did not set.
• If DTC P0716, P0717, P07BF, or P07C0 set
Refer to Circuit/System Testing below.
• If DTC P0716, P0717, P07BF, or P07C0 did not set
6. 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 Q8 control solenoid valve assembly. Refer to Control Solenoid Valve and Transmission Control Module Assembly Replacement Service and Repair.
2. Connect the DT-48616-10 - harness between the vehicle wire harness X1 14-way transmission electrical connector, and the Q8 control solenoid valve assembly.
3. Ignition ON.
4. Test for 11-13 volts between the ISS voltage circuit terminal B on the control solenoid valve assembly X3 connector and ground.
• If not between 11-13 volts
Replace the Q8 control solenoid valve assembly.
• If between 11-13 volts
5. 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
6. 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
7. Replace the B14C transmission input shaft speed sensor.
Repair Instructions
Perform the Diagnostic Repair Verification Verification Tests after completing the repair.
Note: Before replacing the TCM, perform the Control Solenoid Valve and Transmission Control Module Assembly Inspection (Gen 1 with 1.4L - LCU, 1.6L - LDE or LFJ, 1.8L - LUW) Control Solenoid Valve and Transmission Control Module Assembly Inspection (Gen 1 with 1.4L - LCU, 1.6L - LDE or LFJ, 1.8L - LUControl Solenoid Valve and Transmission Control Module Assembly Inspection (Gen 2 with 1.4L - LUV) Control Solenoid Valve and Transmission Control Module Assembly Inspection (Gen 2 with 1.4L - LUV).
* Refer to Control Module References Control Module References for control solenoid valve assembly replacement, programming and setup.
* Perform the Transmission Adaptive Values Learn Programming and Relearning following all transmission related repairs.
* Perform the Input and Output Speed Sensor Removal 4. Input and Output Speed Sensor Removal and the Input and Output Speed Sensor Installation 42. Input and Output Speed Sensor Installation.