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Focus Diagnostic Mode

http://users.ev1.net/~sturgeon/car/focus/diag/diag.htm

Introduction

The Focus ECU has a diagnostic mode which can be accessed through the instrument panel. To access it, hold in the trip reset button which turning the ignition switch to the “on” position. There is no need to start the engine. Continue to hold the button in until “TEST” is displayed on the LCD panel. You can then use the button to cycle through all the various readouts as shown below. Of course, performing this procedure will reset your trip odometer back to zero.

The photos below show the displays after each press of the trip reset button. Some of the functions are obvious while others are somewhat difficult to decipher. If anybody can provide any further information, or correct any erroneous data on this page, I'd welcome your feedback. Email me at: focuszx3@ev1.net

Sorry about the fingers in some of the photos :-)

Photos

Gauge sweep. All gauges sweep to their maximum positions, then return to normal:
1 - Gauge sweep. All gauges sweep to their maximum positions, then return to normal:
LCD segment test. All LCD segments illuminate so that any faulty segments can be identified:
2 - LCD segment test. All LCD segments illuminate so that any faulty segments can be identified:
Bulb test. All ECU-controlled bulbs illuminate so that any faulty bulbs can be identified:
3 - Bulb test. All ECU-controlled bulbs illuminate so that any faulty bulbs can be identified:
Instrument cluster ROM revision number. “r 22” is shown for this Focus:
4 - Instrument cluster ROM revision number. “r 22” is shown for this Focus:
Instrument cluster NVRAM revision number. “E001” is shown:
5 - Instrument cluster NVRAM revision number. “E001” is shown:
Photo 6
6 - Diagnostic trouble codes. If there are no diagnostic codes stored the display will alternate between “DTC” and “none”. If codes are present, they can be sequentially accessed by further presses of the button
Photo 7
7 - Vehicle speed in miles/hour. “000.0” is shown:
Photo 8
8 - Vehicle speed in kilometers/hour. “000.0” is shown:
Photo 9
9 - “O62.o” is shown:
Photo 10
10 - Engine speed in revolutions/minute. “0803” is shown:
Photo 11
11 - Some kind of fuel volume indication? “079t” is shown:
Photo 12
12 - “L254” is shown:
Photo 13
13 - “125.F” is shown:
Photo 14
14 - “096C” is shown:
Photo 15
15 - “0A0C” is shown:
Photo 16
16 - “614.1” is shown:
Photo 17
17 - “A6-L” is shown:
Photo 18
18 - Instrument cluster illumination? “1L-L” is shown:
Photo 19
19 - “A-6C” is shown:
Photo 20
20 - “6-08” is shown:
Photo 21
21 - “C-C1” is shown:
Photo 22
22 - “d-36” is shown:
Photo 23
23 - “0181” is shown:
Photo 24
24 - Odometer in miles? “2014” is shown:
Photo 25
25 - Odometer in kilometers? “3255” is shown:
Photo 26
26 - “4236” is shown:
Photo 27
27 - “5000” is shown:
Photo 28
28 - “6000” is shown:
Photo 29
29 - “7000” is shown:
Photo 30
30 - “P11F” is shown:
Photo 31
31 - “P200” is shown:
Photo 32
32 - “P300” is shown:
Photo 33
33 - “P400” is shown: