Pinpoint Test B : Paddle Shift Does Not Operate Correctly

Refer to Wiring Diagrams for schematic and connector information.
Normal Operation and Fault Conditions

Each paddle shift switch is a momentary contact switch integral to the steering wheel. When the selector lever is placed in the sport shift position, the upshift/downshift feature becomes activated and allows the operator to upshift or downshift without removing their hands from the steering wheel.

Possible Sources
- Circuit open or shorted
- Paddle shift switches
- Clockspring
- SCCM
- PCM

B1 VERIFY GEAR POSITION

Using a diagnostic scan tool, access the PCM and monitor PID TR.

Move the selector lever to all gear positions while monitoring PID TR.

Does PID TR agree with all selector lever positions?

Yes

GO to B2

RESOLVE any diagnostic trouble codes (DTCs) related to the TR sensor. REFER to: DTC Chart and Pinpoint Tests - 2.3L EcoBoost (231kW/314PS) . REFER to: DTC Chart and Pinpoint Tests - 5.0L Ti-VCT V8 (308kW/418PS) . If no TR sensor diagnostic trouble codes (DTCs) are present, RESOLVE the Selector lever linkage is out of correct gear relationship concern. REFER to Symptom Chart

B2 CHECK THE UPSHIFT CIRCUIT FOR VOLTAGE

Ignition OFF.

Disconnect Upshift paddle switch C2428.

Inspect for damaged or pushed-out terminals.

Ignition ON.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2428-1	Courtesy of FORD MOTOR COMPANY	Ground

Is the voltage greater than 11 volts?

Yes

GO to B5

GO to B3

B3 CHECK THE UPSHIFT SIGNAL CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect PCM C1551B (for vehicles equipped with the 2.3L Ecoboost engine).

Disconnect PCM C175B (for vehicles equipped with the 5.0L Ti-VCT V8 engine).

Inspect the connectors for damaged or pushed-out terminals.

For vehicles equipped with the 2.3L, measure:

Positive Lead	Measurement / Action	Negative Lead
C2428-1	Courtesy of FORD MOTOR COMPANY	C1551B-6

For vehicles equipped with the 5.0L, measure:

Positive Lead	Measurement / Action	Negative Lead
C2428-1	Courtesy of FORD MOTOR COMPANY	C175B-53

Is the resistance less than 3 ohms?

Yes

GO to B4

No	REFER to the Wiring Diagrams manual to identify and repair the open circuit.

B4 CHECK THE UPSHIFT SIGNAL CIRCUIT FOR A SHORT TO GROUND

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2428-1	Courtesy of FORD MOTOR COMPANY	Ground

Is the resistance greater than 10, 000 ohms?

Yes	Refer to PCM Guided Routine .After programming the new PCM, CARRY OUT the transmission strategy download. REFER to: Transmission Strategy Download .

No	REFER to the Wiring Diagrams manual to identify and repair the short to ground.

B5 CHECK THE DOWNSHIFT CIRCUIT FOR VOLTAGE

Ignition OFF.

Disconnect Downshift paddle switch C2429.

Inspect the connectors for damaged or pushed-out terminals.

Ignition ON.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2429-4	Courtesy of FORD MOTOR COMPANY	Ground

Is the voltage greater than 11 volts?

Yes

GO to B8

GO to B6

B6 CHECK THE DOWNSHIFT SIGNAL CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect PCM C1551B (for vehicles equipped with the 2.3L Ecoboost engine).

Disconnect PCM C175B (for vehicles equipped with the 5.0L Ti-VCT V8 engine).

Inspect the connectors for damaged or pushed-out terminals.

For the 2.3L engine, measure:

Positive Lead	Measurement / Action	Negative Lead
C2429-4	Courtesy of FORD MOTOR COMPANY	C1551B-5

For the 5.0L engine, measure:

Positive Lead	Measurement / Action	Negative Lead
C2429-4	Courtesy of FORD MOTOR COMPANY	C175B-65

Is the resistance less than 3 ohms?

Yes

GO to B7

No	REFER to the Wiring Diagrams manual to identify and repair the open circuit.

B7 CHECK THE DOWNSHIFT SIGNAL CIRCUIT FOR A SHORT TO GROUND

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2429-4	Courtesy of FORD MOTOR COMPANY	Ground

Is the resistance greater than 10, 000 ohms?

Yes	Refer to PCM Guided Routine .After programming the new PCM, CARRY OUT the transmission strategy download. REFER to: Transmission Strategy Download .

No	REFER to the Wiring Diagrams manual to identify and repair the short to ground.

B8 CHECK THE SIGNAL RETURN CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect PCM C1551B (for vehicles equipped with the 2.3L Ecoboost engine).

Disconnect PCM C175B (for vehicles equipped with the 5.0L Ti-VCT V8 engine).

Inspect the connectors for damaged or pushed-out terminals.

For the 2.3L engine, measure:

Positive Lead	Measurement / Action	Negative Lead
C2428-2	Courtesy of FORD MOTOR COMPANY	C1551B-4

Positive Lead	Measurement / Action	Negative Lead
C2429-3	Courtesy of FORD MOTOR COMPANY	C1551B-4

For the 5.0L engine, measure:

Positive Lead	Measurement / Action	Negative Lead
C2428-2	Courtesy of FORD MOTOR COMPANY	C175B-73

Positive Lead	Measurement / Action	Negative Lead
C2429-3	Courtesy of FORD MOTOR COMPANY	C175B-73

Are the resistances less than 3 ohms?

Yes

GO to B9

No	REFER to the Wiring Diagrams manual to identify and repair the open circuit.

B9 TEST THE SELECTSHIFT™ SWITCHES

For the upshift paddle switch, measure the following while pressing and releasing the upshift switch:

Positive Lead	Measurement / Action	Negative Lead
upshift paddle switch, component side pin 1	Courtesy of FORD MOTOR COMPANY	upshift paddle switch, component side pin 2

For the downshift paddle switch, measure the following while pressing and releasing the downshift switch:

Positive Lead	Measurement / Action	Negative Lead
downshift paddle switch, component side pin 3	Courtesy of FORD MOTOR COMPANY	downshift paddle switch, component side pin 4

Are the resistances less than 3 ohms with the switch pressed, and greater than 10, 000 ohms with the switch released?

Yes	Refer to PCM Guided Routine .After programming the new PCM, CARRY OUT the transmission strategy download. REFER to: Transmission Strategy Download .

No	For the upshift paddle switch, INSTALL a new upshift paddle switch. REFER to: Upshift Paddle Switch . For the downshift paddle switch, INSTALL a new downshift paddle switch. REFER to: Downshift Paddle Switch .