Instrument Cluster Test Mode

The Instrument cluster of all US-Spec Foci have a built in test-mode complete with digital speedometer, tachometer and diagnostic readings... Wanna access it? :)

1) Insert Key (do not turn it)
2) Press and hold the Trip-Meter Reset Button
3) While holding the reset button, start your car and continue holding the button.
4) Within 10 seconds, the display should change to "test" (written in a silly LCD font) and the needles will go nuts. No biggie. Release the Button.
5) Pressing the button will now cycle through some 15 different modes.

It's worth me mentioning that this diagnostic mode is no substitute for taking your car in for service. Many codes found in this mode mean absolutely nothing without other, expensive test equipment at the dealership.

Breakdown of some of the functions:
1 Press - Shows a Gauge Sweep
2 Presses - shows all 8's on the LCD (LCD TEST)
3 Presses - illuminates all the bulbs on the dash
4 Presses - displays hexadecimal value for ROM level
5 Presses - Displays the hexadecimal value for EE level
6 Presses - Shows DTC Troubleshooting Codes (Nothing to worry about though)
7 Presses - DIGITAL SPEEDOMETER - MPH
8 Presses - DIGITAL SPEEDOMETER - KPH
10 Presses - DIGITAL TACHOMETER

For the true hackers out there, the following table shows DTC descriptions. As mentioned before, the codes mean very little. Before tests are run, there's lots of steps that need to be taken. If you suspect something is wrong, have your computer scanned with an OBD-II scanner. Many auto parts stores do this for free. Dealers usually charge for this.

9202	Fuel sender open circuit
9204	Fuel sender short to ground
9213	Anti-theft number of programmed keys is below minimum
A103	Antenna not connected-defective transceiver
9232	Antenna not connected-defective transceiver
9317	Battery Voltage high
9318	Battery voltage low
9342	ECU is defective
9356	Ignition run circuit open
9364	Ignition Start circuit open
9600	PATS Ignition Key Transponder Signal is Not Received - Damaged Key or non-PATSKey
9601	PATSReceived Incorrect Key-Code from Ignition Key Transponder (unprogrammed Encoded Ignition Key)
9602	PATS Received Invalid Format of Key-Code From Ignition Key Transponder (Partial Key Code)
9681	PATSTranceiver Signal is Not Received (Not Connected, Damaged, or Wiring)
A139	PCM ID does not match between Instrument Cluster and PCM
A141	NVM Configuration Failure (No PCM ID exchange between Instrument Cluster and PCM)
A143	NVM memory failure
5284	Oil Pressure Switch Failure
D027	SCP Invalid or Missing Data for Engine RPM
D041	SCP Invalid or missing data for Vehicle Speed
D043	SCP Invalid or missing data for Traction Control
D073	SCP Invalid or missing data for engine coolant
D123	SCP Invalid or missing data for Odometer
D147	SCP Invalid or missing data for vehicle security
D262	Missing SCP message.