Well Cliff your really going to have to take this to a professional shop or Ford dealer ! You don't want to just replace parts on this , could get very expensive ! I don't know how familiar you are with newer vehicles , given the all the electronic modules on vehicles today. There is a serial data communication network called CAN .controller area network that the modules share info on. Your instrument cluster is a module of a kind too , has microprocessor it side ! You really need a dealership type scan tool to check this one out. You could possibly need a new instrument cluster or a PCM ! Then there would need to be programmed ! this is nothing for a do it yourselfer to do !
Speedometer
The instrument cluster receives the vehicle speed sensor (VSS) signal from the powertrain control module (PCM) over the high speed controller area network (HS-CAN). The instrument cluster monitors the VSS input from the PCM and commands the speedometer with a corresponding movement of the pointer.
- The speedometer/odometer is inoperative
Pinpoint Test E: The Speedometer/Odometer Is Inoperative
Normal Operation
The instrument cluster receives the vehicle speed sensor (VSS) signal from the powertrain control module (PCM) over the high speed controller area network (HS-CAN). The instrument cluster monitors the VSS input from the PCM and commands the speedometer with a corresponding movement of the pointer.
Possible Causes
- PCM
- Instrument cluster
PINPOINT TEST E: THE SPEEDOMETER/ODOMETER IS INOPERATIVE
Test Step
Result / Action to Take
E1 RETRIEVE THE RECORDED DTCs FROM BOTH THE CONTINUOUS AND ON-DEMAND PCM SELF-TESTS
- Check for recorded PCM DTCs from the continuous and on-demand self-tests.
- Are any PCM DTCs recorded?
Yes
REFER to the Powertrain Control/Emissions Diagnosis (PC/ED) manual.
No
GO to E2 .
E2 CARRY OUT THE INSTRUMENT CLUSTER SPEEDOMETER OUTPUT STATE CONTROL USING THE SCAN TOOL
- Key in ON position.
- Enter the following diagnostic mode on the diagnostic tool: Instrument Cluster Output State Control.
- Enter the instrument cluster output state control and select SPDOMETER. Command the speedometer on and off. Observe the speedometer.
- Does the speedometer start at 0 and move to 193 km/h (120 mph) when commanded on, and return to 0 when commanded off?
Yes
GO to E3 .
No
GO to E4 .
E3 MONITOR THE DISPLAY SEGMENT CONTROL DISPLAY
- Observe the odometer in the message center (message center cluster) or integrated circuit (base cluster) display area.
- Does the odometer display all dashes (-----)?
Yes
GO to E5 .
No
If the message center (message center cluster) or integrated circuit (base cluster) display is blank, GO to E4 .
E4 CHECK FOR CORRECT INSTRUMENT CLUSTER OPERATION
- Disconnect the instrument cluster connector.
- Check for:
- Connect the instrument cluster connector and make sure it seats correctly.
- Operate the system and verify the concern is still present.
- Is the concern still present?
Yes
INSTALL a new instrument cluster. REFER to Instrument Cluster in this section. TEST the system for normal operation.
No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.
E5 CHECK FOR CORRECT PCM OPERATION
- Disconnect all the PCM connectors.
- Check for:
- Connect all the PCM connectors and make sure they seat correctly.
- Operate the system and verify the concern is still present.
- Is the concern still present?
Yes
INSTALL a new PCM. REFER to Section 303-14 . TEST the system for normal operation.
No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.
Good luck !
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