Pinpoint Test E : Transmission Range Sensor Fault

E1 READ AND RECORD ALL DTCS
- Using the diagnostic scan tool, retrieve all DTCs.
Are TR sensor DTCs present?

Yes GO to E2

No PERFORM the TR Sensor Adaptive Learning procedure. REFER to: Transmission Control Module (TCM) Adaptive Learning .

E2 CONFIRM THE TR SENSOR AND TCM CONNECTORS ARE LATCHED

Ignition OFF.

PUSH, PULL, CLICK C167 to confirm the TR sensor is connected.

VERIFY C1750A is connected and the lock lever is in the lock position.

VERIFY C1750B is connected and the lock lever is in the lock position.

Are the TR sensor and TCM connectors fully connected?

Yes

GO to E3

No	CONNECT the connectors and LOCK the lock levers on the TR sensor and the TCM. CLEAR the DTCs. Using the diagnostic scan tool, perform the KOER self-test. If DTCs return.

E3 CHECK THE TR (TRANSMISSION RANGE) SENSOR POWER CIRCUIT FOR VOLTAGE

Ignition OFF.

Disconnect TR Sensor C167.

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
C167-3	Courtesy of FORD MOTOR COMPANY	Ground

Is the voltage less than 4.5 volts?

Yes

GO to E5

GO to E4

E4 CHECK THE TR (TRANSMISSION RANGE) SENSOR GROUND CIRCUIT

Measure:

Positive Lead	Measurement / Action	Negative Lead
C167-3	Courtesy of FORD MOTOR COMPANY	C167-2

Is the voltage less than 4.5 volts?

Yes

GO to E5

No	INSTALL a new TR sensor. REFER to: Transmission Range (TR) Sensor . PERFORM the TR Sensor Adaptive Learning procedure. REFER to: Transmission Control Module (TCM) Adaptive Learning .

E5 CHECK THE TR (TRANSMISSION RANGE) SENSOR CIRCUITS FOR AN OPEN

Ignition OFF.

Disconnect TCM C1750B.

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

Measure:

Positive Lead	Measurement / Action	Negative Lead
C167-1	Courtesy of FORD MOTOR COMPANY	C1750B-25
C167-2	Courtesy of FORD MOTOR COMPANY	C1750B-35
C167-3	Courtesy of FORD MOTOR COMPANY	C1750B-34
C167-4	Courtesy of FORD MOTOR COMPANY	C1750B-24

Are the resistances less than 3 ohms?

Yes

GO to E6

No	REPAIR the circuit.

E6 CHECK THE TR (TRANSMISSION RANGE) SENSOR CIRCUITS FOR A SHORT TO GROUND

Measure:

Positive Lead	Measurement / Action	Negative Lead
C167-1	Courtesy of FORD MOTOR COMPANY	Ground
C167-2	Courtesy of FORD MOTOR COMPANY	Ground
C167-3	Courtesy of FORD MOTOR COMPANY	Ground
C167-4	Courtesy of FORD MOTOR COMPANY	Ground

Are the resistances greater than 10, 000 ohms?

Yes

GO to E7

No	INSPECT and REPAIR the circuit shorted to ground. If a short to ground was not found, INSTALL a new TR sensor. REFER to: Transmission Range (TR) Sensor . PERFORM the TR Sensor Adaptive Learning procedure. REFER to: Transmission Control Module (TCM) Adaptive Learning .

E7 CHECK THE TR (TRANSMISSION RANGE) SENSOR CIRCUITS FOR A SHORT TO POWER

Measure:

Positive Lead	Measurement / Action	Negative Lead
C167-1	Courtesy of FORD MOTOR COMPANY	C1750B-25
C167-2	Courtesy of FORD MOTOR COMPANY	C1750B-35
C167-3	Courtesy of FORD MOTOR COMPANY	C1750B-34
C167-4	Courtesy of FORD MOTOR COMPANY	C1750B-24

Is any voltage present?

Yes	INSPECT and REPAIR the circuit shorted to power. If a short to power was not found, INSTALL a new TR sensor. REFER to: Transmission Range (TR) Sensor . PERFORM the TR Sensor Adaptive Learning procedure. REFER to: Transmission Control Module (TCM) Adaptive Learning .

No	INSTALL a new TCM. REFER to: Transmission Control Module (TCM) . PROGRAM the TCM with the latest calibration, REFER to: Transmission Control Module (TCM) Adaptive Learning .