PINPOINT TEST C: DTCs P705, P706, P707, P708, P709, P1702, P1921

WARNING: This page is about a different car, the 2014 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Refer to the TRANSMISSION VEHICLE HARNESS CONNECTOR illustration within the TRANSMISSION CONNECTOR LAYOUTS procedure.

NOTE: Refer to the TRANSMISSION LEADFRAME CONNECTOR illustration within the TRANSMISSION CONNECTOR LAYOUTS procedure.

NOTE: If the scan tool is unable to access the transmission PIDs, refer to ENGINE CONTROLS - INTRODUCTION (EXCEPT DIESEL & HYBRID) (SECTION 0) .

NOTE: Read and record all DTCs.

C1 VERIFY DTCs
- Ignition OFF.
- Select PARK.
- Connect the scan tool.
- Carry out the Key ON Engine OFF (KOEO) then the Key ON Engine Running (KOER) test.
Are Transmission Range (TR) sensor DTCs present?
- Yes : GO to C2 .
- No : If no DTC s are present, REFER to DIAGNOSIS BY SYMPTOM to diagnose any symptoms that may be present.

C2 CHECK TR SENSOR ELECTRICAL OPERATION

Ignition ON.
Enter the following diagnostic mode on the scan tool: TR PIDs: TR_DC and TR_FREQ.
Move the selector lever into each range and stop.
Observe the following PIDs: TR_DC and TR_FREQ while wiggling the harness or driving the vehicle.

Compare the PID: TR_DC to the selector lever position duty cycle, using the following chart.

Selector Lever Position	Range (% Duty Cycle)
P	8.0 - 25.8
R	30.50 - 39.31
N	40.54 - 52.49
D	54.35 - 71.15
M	65.15 - 82
2	70.55 - 85.61
1	75.25 - 88.91

Is the TR_FREQ between 100 to 150 Hz?

Is the TR_DC within range?

Does the TR_DC and TR_FREQ remain steady when the harness is wiggled or the vehicle driven?

Yes : The problem is not in the TR sensor system. Concern may be intermittent, INSPECT and REPAIR any loose connectors or backed out terminals. If OK, REFER to DIAGNOSIS BY SYMPTOM for further diagnosis.
No : GO to C3 .

C3 CHECK TR SENSOR VPWR CIRCUIT FOR POWER
- Ignition OFF.
- Disconnect: Transmission Vehicle Harness C1575 .
- Inspect the connector for damaged or pushed out terminals, corrosion, loose wires and missing or damaged seals.
- Ignition ON.
- Measure the voltage between the transmission vehicle harness C1575-12 , circuit LE111 (VT/GN) harness side and ground.
  
  Fig 1: Measuring Voltage Between Transmission Vehicle Harness C1575-12, Circuit LE111 (VT/GN)
  Courtesy of FORD MOTOR CO.
Is the voltage greater than 11 volts?
- Yes : GO to C4 .
- No : INSPECT and REPAIR the transmission vehicle harness circuit LE111 (VT/GN) for an open. If an open circuit is not found, REPLACE the PCM, REFER to POWERTRAIN CONTROL MODULE (PCM) . PERFORM the Solenoid Body Strategy Data Download procedure. REFER to SOLENOID BODY STRATEGY . CLEAR the DTCs. TEST the system for normal operation.
C4 CHECK TR SENSOR SIGNAL CIRCUIT
- Measure the voltage between the transmission vehicle harness C1575-4 , circuit VET32 (VT) harness side and ground.
  
  Fig 2: Measuring Voltage Between Transmission Vehicle Harness C1575-4, Circuit VET32 (VT) And Ground
  Courtesy of FORD MOTOR CO.
Is the voltage greater than 4.8 volts?
- Yes : GO to C5 .
- No : INSPECT and REPAIR vehicle harness circuit VET32 (VT) for an open. If an open circuit is not found, REPLACE the PCM, REFER to POWERTRAIN CONTROL MODULE (PCM) . PERFORM the Solenoid Body Strategy Data Download procedure. REFER to SOLENOID BODY STRATEGY . CLEAR the DTCs. TEST the system for normal operation.
C5 CHECK TR SENSOR GROUND CIRCUIT
- Measure the voltage between the transmission vehicle harness C1575-4 circuit VET32 (VT) and C1575-11 circuit RET24 (BN/BU).
  
  Fig 3: Measuring Voltage Between Transmission Vehicle Harness C1575-4 Circuit VET32 (VT) And C1575-11 Circuit RET24 (BN/BU)
  Courtesy of FORD MOTOR CO.
Is the voltage greater than 4.8 volts?
- Yes : GO to C6 .
- No : INSPECT and REPAIR transmission vehicle harness circuit RET24 (BN/BU) for an open. If an open circuit is not found, REPLACE the PCM, REFER to ELECTRONIC ENGINE CONTROLS . PERFORM the Solenoid Body Strategy Data Download procedure. REFER to SOLENOID BODY STRATEGY . CLEAR the DTCs. TEST the system for normal operation.
C6 CHECK TR SENSOR TO MANUAL VALVE
- Drain the transmission fluid and remove the transmission fluid pan. Refer to FLUID PAN, GASKET AND FILTER .
- Check the connection between the TR sensor and the manual control valve. Refer to TRANSMISSION - EARLY BUILD or TRANSMISSION - LATE BUILD .
- Inspect the molded leadframe for metallic contamination, refer to SHIFT SOLENOIDS (SS) .
Is the TR sensor connected to the manual control valve shaft?
- Yes : INSTALL a new TR sensor, REFER to SHIFT SOLENOIDS (SS) . TEST the system for normal operation.
- No : CONNECT the TR sensor to the manual control valve, REFER to TRANSMISSION - EARLY BUILD or TRANSMISSION - LATE BUILD . CLEAN any debris from the molded leadframe. RUN the Key ON Engine OFF (KOEO) self-test. INSTALL a new TR sensor/leadframe, REFER to SOLENOID BODY STRATEGY .