Pinpoint Test J : DTCS P0706, P0707, P0708, P1702, P1705, P1921

WARNING: This page is about a different variant/trim than selected.

Refer to Transmission Controls - 6F15 for schematic and connector information.

Normal Operation and Fault Conditions

The TR sensor provides a fixed frequency duty cycle to the PCM for each manual control lever positions (PARK, REVERSE, NEUTRAL, DRIVE and LOW). The PCM uses the TR sensor signal for LPC, shift scheduling and TCC operation. The PCM transmits TR data on the High Speed (HS) CAN to the BCM for engine start and reverse lamp operation.

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
PCM P0706:00	Transmission Range Sensor "A" Circuit Range/Performance: No Sub Type Information	Mechanical or electrical fault. Input from the TR sensor did not change or is intermittent.
PCM P0707:00	Transmission Range Sensor "A" Circuit Low: No Sub Type Information	TR sensor circuit open or short to ground.
PCM P0708:00	Transmission Range Sensor "A" Circuit High: No Sub Type Information	TR sensor circuit open.
PCM P1702:00	Transmission Range Sensor Circuit Intermittent: No Sub Type Information	TR sensor circuit open or short to ground.
PCM P1705:00	Transmission Range Circuit Not Indicating Park/Neutral During Self Test: No Sub Type Information	TR sensor in wrong position during the self-test.
PCM P1921:00	Transmission Range Signal: No Sub Type Information	The PCM has detected a TR signal duty cycle out of range.

Possible Sources

Connectors damaged or pushed-out terminals, corrosion, loose wires and missing or damaged seals
TR sensor
Transmission internal wiring harness frame
PCM

J1 RETRIEVE AND RECORD ALL DTCS
- Using the diagnostic scan tool, retrieve all DTCs.
Are DTCs P0706, P0707, P0708, P1702, P1705 and/or P1921 present?

Yes GO to J2

No REFER to: Diagnosis By Symptom .

J2 CHECK THE TR (TRANSMISSION RANGE) SENSOR VEHICLE POWER CIRCUIT FOR VOLTAGE

Ignition OFF.

Disconnect Transmission Harness C1520A.

Inspect the connector for damaged or pushed-out terminals, corrosion, loose wires and missing or damaged seals.

Ignition ON.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C1520A-18	Courtesy of FORD MOTOR COMPANY	Ground

Is the voltage greater than 11 volts?

Yes

GO to J3

No	Refer to PCM Guided Routine Testing . CARRY OUT the Transmission Strategy Download, REFER to: Transmission Strategy Download .

J3 CHECK THE TR (TRANSMISSION RANGE) SENSOR GROUND CIRCUIT

Ignition ON.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C1520A-18	Courtesy of FORD MOTOR COMPANY	C1520A-20

Is the voltage greater than 11 volts?

Yes

GO to J4

No	REPAIR the open circuit, if an open circuit is not found, Refer to PCM Guided Routine Testing . CARRY OUT the Transmission Strategy Download, REFER to: Transmission Strategy Download .

J4 CHECK THE TR (TRANSMISSION RANGE) SENSOR SIGNAL CIRCUIT

Ignition ON.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C1520A-17	Courtesy of FORD MOTOR COMPANY	Ground

Is the voltage greater than 4.5 volts?

Yes

GO to J5

No	INSPECT and REPAIR the circuit. If an open circuit is not found, Refer to PCM Guided Routine Testing . CARRY OUT the Transmission Strategy Download, REFER to: Transmission Strategy Download .

J5 CHECK THE TR (TRANSMISSION RANGE) SENSOR CIRCUITS FOR A SHORT TOGETHER

Ignition OFF.

Disconnect PCM C1520A.

Inspect the connector for damaged or pushed-out terminals, corrosion, loose wires and missing or damaged seals.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C1520A-20	Courtesy of FORD MOTOR COMPANY	C1520A-18
C1520A-20	Courtesy of FORD MOTOR COMPANY	C1520A-17
C1520A-18	Courtesy of FORD MOTOR COMPANY	C1520A-17

Are all of the resistances greater than 10, 000 ohms?

Yes

GO to J6

No	REPAIR the circuits.

J6 CHECK THE TR (TRANSMISSION RANGE) SENSOR CIRCUITS IN THE TRANSMISSION INTERNAL WIRING HARNESS FRAME FOR AN OPEN

Remove the main control cover. REFER to: Main Control Cover .

Disconnect TR Sensor.

Inspect the connector for damaged or pushed-out terminals, corrosion, loose wires and missing or damaged seals.

Measure:

Positive Lead	Measurement / Action	Negative Lead
Transmission, component side pin 17	Courtesy of FORD MOTOR COMPANY	TR sensor internal harness, pin 2
Transmission, component side pin 18	Courtesy of FORD MOTOR COMPANY	TR sensor internal harness, pin 1
Transmission, component side pin 20	Courtesy of FORD MOTOR COMPANY	TR sensor internal harness, pin 3

Are the resistances less than 3 ohms?

Yes

GO to J7

No	INSTALL a new transmission internal wiring harness frame. REFER to: Transmission Internal Wiring Harness Frame .

J7 CHECK THE TR (TRANSMISSION RANGE) SENSOR CIRCUITS IN THE TRANSMISSION INTERNAL WIRING HARNESS FRAME FOR A SHORT TO GROUND

Measure:

Positive Lead	Measurement / Action	Negative Lead
Transmission, component side pin 17	Courtesy of FORD MOTOR COMPANY	Ground
Transmission, component side pin 18	Courtesy of FORD MOTOR COMPANY	Ground
Transmission, component side pin 20	Courtesy of FORD MOTOR COMPANY	Ground

Are the resistances greater than 10, 000 ohms?

Yes	INSTALL a new TR sensor. REFER to: Transmission Range (TR) Sensor . After the repair is complete, GO to J8

No	INSTALL a new transmission internal wiring harness frame. REFER to: Transmission Internal Wiring Harness Frame .

J8 ON DEMAND SELF-TEST

Check to make sure the transmission harness connector is fully seated, terminals are engaged in connector and in good condition before proceeding.

Make sure the selector lever is in the Park or Neutral position.

Using the diagnostic scan tool, perform the KOEO self-test.

Did DTC P1705 return?

Yes	VERIFY selector lever cable adjustment. REFER to: Selector Lever Cable Adjustment .

No	The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or terminal issues.