Ford onboard diagnostics dashboard test mode
Enter the Ford HEC Dealer Test Mode
1.
On the instrument cluster press and
hold the SELECT/RESET button
2.
Turn the ignition switch to the on position while the button is pressed
3.
Continue pressing, "test"
will appear on the odometer.
4. Start the truck
4. Start the truck
5.
Released the button to begin the
dealer test mode.
6.
Pressing the SELECT/RESET button now
will advance through the parameters.
Display Descriptions
Here's the odometer function
followed by a description. Not every
display listed may be on your truck. 05-07
added values that 03 / 04 didn’t have
GAGE= Sweep of all gauges (then present current gauge values). Also carries out the checksum tests on ROM
and EE. If the gauge sweep is inoperative, INSTALL a new instrument cluster.
BLUB= Illuminates all micro-controlled indicators and LEDs.
Install a new indicator or LED as necessary.
R####= Returns to normal operation of all micro-controlled
indicators and LEDs and displays hexadecimal value for ROM level. If
alternating flashes for FAIL and ROM level are displayed, INSTALL a new
instrument cluster.
EE=
Displays the hexadecimal value for EE level . If alternating flashes of FAIL
and EE level are displayed replace instrument cluster.
DT=
Displays hexadecimal coding of final manufacturing test date .
DTC = Displays continuous DTC's in hexadecimal format. Pressing
the SELECT/RESET button will display any DTCs stored before proceeding to the
next step. See index below for description of trouble codes.
###C
Gas engines display last temperature gauge
input value from SCP, temperature gauge will indicate present temperature.
Diesel engine displays present temperature analog/digital input in decimal as a
ratio, temperature gauge will indicate present temperature.
ENG= Displays the English speed in MPH. Speedometer will
indicate present speed within tolerances. Display will show 0 if input in not
received. If input is invalid for one second or more, or if speed is 0.
M=
Displays the metric speed data in kph. Speedometer will indicate present speed
within tolerances. Display will show 0 if input in not received. If input is
invalid for one second or more, or if speed is 0.
TAC= Displays the tachometer data received from the PCM via the
SCP network within tolerances. Tachometer will indicate present RPM. Display
will show 0 if input is no received, if input received is invalid for one
second or more, or if engine RPM is 0.
BR
Displays the brake fluid level in an
analog/digital ratio value.
FUEL= Displays the code (0-255) for the fuel sender input to the
HEC. The fuel gauge will display a filtered fuel level value. This filter will
keep the pointer from moving suddenly or erratically.
255= open send +/- 0
232= full stop +/- 0
215= Full mark +/- 10
178= 3/4 mark +/- 8
138= 1/2 mark +/- 7
93= 1/4 mark +/- 5
41= E mark +/- 4
54= Low Fuel (0-59)
0-18= short (0-20 max)
OIL= Displays the code (0-250) for the oil pressure switch
input to the HEC.
Oil pressure gauge will indicate
present oil pressure. Normal oil pressure (greater than 6psi) will display a
value between 000 and 176. A low oil pressure or an inoperative engine oil
pressure switch (less than 6 psi) will display a value greater than 176.
dEG'C= Display of engine temperature in Degrees C input from
cylinder head temperature sensor. 49 C= "C" mark
60 C= Normal band start
120 C= Normal band end
-40 C= No SCP message for 5
seconds
BAT battery voltage Displays the code (0-255) for the battery
voltage input to the HEC. Battery voltage gauge will indicate present battery
voltage.
bAt
##.#
Displays present battery
analog/digital voltage.
Some trucks show it as a value between 0-255
93-102 6.2-9.1 volts low
voltage
115-124= 8.5-10.7 volts (Normal band start)
215-225= 15.8-18
volts, (Norm band end)
230-241= 16.9-19.1 volts, high voltage
rhEo= Displays the present decimal rheostat dimming input,
0-255
rhi,
rhS, rho
Alternating 1 second display of
pulse width modulation (PWM) input duty cycle, SCP hexadecimal dimming step,
output driver counts in hexadecimal.
CR=
Displays the current RUN/START sense input. Display will show -h for high input
with the ignition switch in the START position and -L for low input with the
ignition switch in the RUN position.
PA,
Pb, PC, and Pd
Displays 8-bit hexadecimal value for
the Port A, B, C, and D readings (used when requesting information from the
hotline).
PE0-PE7
Displays 8-bit hexadecimal value for
the Port E0-Port E7 in analog/digital readings
GAGE= Repeats the display cycle