Pinpoint Test M : DTCS P07E4, P07E6, P2888, P2889, P288A, P288B

WARNING: This page is about a different car, the 2018 Lincoln Navigator. However, it is still accessible from the selected car via links, so may be relevant.

M1 RETRIEVE AND RECORD ALL DTCS

Are DTCs DTCS P07E4, P07E6, P2888, P2889, P288A, P288B present?

Yes	For DTC P07E4, GO to M2 For DTC P07E6, GO to M12For DTCs P2888, P2889, P288A, P288B, GO to M3

No	If no DTCs are set and a symptom is present, REFER to: Diagnosis By Symptom . If there are no DTCs and no symptoms present, 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.

Using the diagnostic scan tool, retrieve all DTCs.

M2 CONFIRM TRANSMISSION PARK IS NOT MANUALLY OVERRIDDEN

Does the PID TR_PARK_STAT indicate the transmission is in mechanical Park override?

Yes	REMOVE the transmission from mechanical Park override. REFER to: Transmission Park by Wire Manual Release .

GO to M12

Connect the diagnostic tool.

Ignition ON.

Using the diagnostic scan tool monitor the PID TR_PARK_STAT.

M3 CHECK THE TASV CIRCUIT FOR POWER

Is the voltage greater than 11 volts?

Yes

GO to M7

GO to M4

Ignition OFF.

Disconnect Transmission Vehicle Harness C168 .

Ignition ON.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C168-12	Courtesy of FORD MOTOR COMPANY	Ground

M4 CHECK THE TRANSMISSION HARNESS FOR AN OPEN

Is the resistance less than 3 ohms?

Yes

GO to M5

No	REPAIR the circuit

Ignition OFF.

Disconnect TCM C1822 .

Measure:

Positive Lead	Measurement / Action	Negative Lead
C168-12	Courtesy of FORD MOTOR COMPANY	C1822-35

M5 CHECK THE TRANSMISSION HARNESS FOR A SHORT TO GROUND

Is the resistance greater than 10, 000 ohms?

Yes

GO to M6

No	REPAIR the circuit.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C168-12	Courtesy of FORD MOTOR COMPANY	Ground

M6 CHECK THE TRANSMISSION INTERNAL HARNESS FOR A SHORT TO THE POWER CIRCUITS

Is the resistance greater than 10, 000 ohms?

Yes

GO to M7

No	REPAIR the circuit.

REMOVE the transmission fluid pan. REFER to: Transmission Fluid Pan, Gasket and Filter .

Ignition OFF.

Disconnect Transmission Fluid Pump C1792 .

Disconnect Park Lock Pawl Solenoid C177 .

Measure:

Positive Lead	Measurement / Action	Negative Lead
Transmission component side, pin 12	Courtesy of FORD MOTOR COMPANY	Transmission component side, pin 5
Transmission component side, pin 12	Courtesy of FORD MOTOR COMPANY	Transmission component side, pin 6
Transmission component side, pin 12	Courtesy of FORD MOTOR COMPANY	Transmission component side, pin 7
Transmission component side, pin 12	Courtesy of FORD MOTOR COMPANY	Transmission component side, pin 8
Transmission component side, pin 12	Courtesy of FORD MOTOR COMPANY	Transmission component side, pin 9
Transmission component side, pin 12	Courtesy of FORD MOTOR COMPANY	Transmission component side, pin 10
Transmission component side, pin 12	Courtesy of FORD MOTOR COMPANY	Transmission component side, pin 11
Transmission component side, pin 12	Courtesy of FORD MOTOR COMPANY	Transmission component side, pin 12
Transmission component side, pin 12	Courtesy of FORD MOTOR COMPANY	Transmission component side, pin 13
Transmission component side, pin 12	Courtesy of FORD MOTOR COMPANY	Transmission component side, pin 18

M7 CHECK THE PARK LOCK PAWL SOLENOID GROUND CIRCUIT

Is the voltage 11 volts or greater?

Yes

GO to M8

No	REPAIR the circuit.

Ignition OFF.

Disconnect Transmission Harness Connector C168 (If not already disconnected).

Connect TCM C1822 (if disconnected).

Ignition ON.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C168-12	Courtesy of FORD MOTOR COMPANY	C168-17

M8 CHECK INTERNAL HARNESS FOR AN OPEN

Are the resistances less than 3 ohms?

Yes

GO to M9

No	REPAIR the circuit

Drain the transmission fluid and remove the transmission fluid pan. REFER to: Transmission Fluid Pan, Gasket and Filter .

Disconnect Park Lock Pawl Solenoid C177 (If not already disconnected).

Disconnect Transmission Fluid Pump C1792 (If not already disconnected).

Measure:

Positive Lead	Measurement / Action	Negative Lead
C177-2	Courtesy of FORD MOTOR COMPANY	Transmission component side, pin 12
C1792-3	Courtesy of FORD MOTOR COMPANY	Transmission component side, pin 12

M9 CHECK INTERNAL HARNESS FOR A SHORT TO GROUND

Are the resistances greater than 10, 000 ohms?

Yes

GO to M10

No	REPAIR the circuit

Measure:

Positive Lead	Measurement / Action	Negative Lead
C177-2	Courtesy of FORD MOTOR COMPANY	Ground

M10 CHECK THE INTERNAL WIRING HARNESS GROUND CIRCUIT FOR AN OPEN

Is the resistance greater than 10, 000 ohms?

Yes

GO to M11

No	REPAIR the circuit

Measure:

Positive Lead	Measurement / Action	Negative Lead
C177-1	Courtesy of FORD MOTOR COMPANY	Transmission component side, pin 26

M11 CHECK THE INTERNAL WIRING HARNESS GROUND CIRCUIT FOR A SHORT TO POWER

Is any voltage detected?

Yes	REPAIR the circuit

GO to M12

Ignition ON.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C177-1	Courtesy of FORD MOTOR COMPANY	Ground

M12 CHECK PARK LOCK PAWL ACTUATOR

Is the resistance between 18 to 20 ohms?

Yes

GO to M13

No	INSTALL a new park lock pawl solenoid.

Ignition OFF.

REMOVE the transmission fluid pan. REFER to: Transmission Fluid Pan, Gasket and Filter . (If not already removed)

Measure:

Positive Lead	Measurement / Action	Negative Lead
Park Lock Pawl Solenoid (Component side) pin 1.	Courtesy of FORD MOTOR COMPANY	Park Lock Pawl Solenoid (Component side) pin 2.

M13 CHECK PARK LOCK PAWL ACTUATOR OPERATION

Does the park lock pawl solenoid pin resist motion with the ignition ON and move with the ignition OFF?

Yes	The park by wire system is working correctly at this time, if symptoms exist, REFER to: Diagnosis By Symptom .

No	INSTALL a new park lock pawl solenoid.

Ignition OFF.

Connect Transmission Harness Connector C168 .

Connect TCM C1822 .

Connect Park Lock Pawl Solenoid C177 .

Disconnect REMOVE the park lock pawl solenoid, leaving the wiring harness connected.

PUSH on the park lock pawl solenoid pin with the ignition ON and OFF.