Does anybody have a list of what all the numbers mean when you hold down the Odometer reset and turn on the key, if not is the service manual the only place to get them?

 

There was a post either here or on the SD/HD forum once that talked about the various numbers and their meaning.

The information is in the service manual - at least the CDROM version. I would try to cut and paste the info but I sent my manual back because at the time in bought it in early '03 all it had was the 7.3 L diesel info in it.

 

Instrument Cluster Self-Diagnostic Mode
Odometer display Description
GAGE Carries out gauge sweep of all gauges, then displays the present gauge values. Also carries out the check sum test on ROM and EEPROM.
All segments illuminated. Illuminates all odometer segments.

bulb Illuminates all micro-controlled lamps and LEDs.

r #### Returns to normal operation of all micro-controlled lamps and LEDs and displays hexadecimal value for ROM level (used when requesting assistance from the hotline).

nr#### Displays hexidecimal ROM level and type as stored in non-volatile memory (NVM).

EE ## Displays hexadecimal value for EE level (used when requesting assistance from the hotline).

dt #### Displays hexadecimal code for the final manufacturing date.

###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.

dtc #### Displays a 16 bit DTC in hexidecimal format. DTCs displayed are those detected in continuous operation not during self-test.

EnG Displays English speed value being input, speedometer will indicate present speed.

m Displays metric speed value being input, speedometer will indicate present speed.

tAc Displays the tachometer value being input to the instrument cluster. Tachometer will indicate present rpm.

FUEL Displays the present analog/digital fuel level being input to the instrument cluster as a ratio.

OIL Displays the last analog/digital reading of the oil pressure switch contact resistance, oil gauge will indicate present level.

br Displays the brake fluid level in an analog/digital ratio value.

bAt ##.# Displays present battery analog/digital voltage.

rhEo Displays present hexadecimal pulse width modulation (PWM) dimming input.

rhi, rhS, rho Alternating 1 second display of pulse width modulation (PWM) input duty cycle, SCP hexidecimal dimming step, output driver counts in hexadecimal.

Cr RUN/START sense circuit check.

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.

 

How do you make this work? Tried it yesterday on my 03/04 and nothing happens.

Thanks.

 

With the truck turned off, push and hold the odo trip reset button and then turn on the ignition. Fun stuff should happen after that. You can even start the truck and see real time data on some of the fields.

To clear the diagnostic mode, turn off the truck. Next time you turn on the ignition the display will behave normally.

 

Thats weird. I figured it was as simple as that. That is what I did quite a few times. Absolutely nothing but the mileage appears........Hmmm......

 

You have to hold it 5-10 seconds after you turn on the ignition

 

Tim,Daryl,
Might be something for the tech file.

If it is not already their.

Darren.

 

what is the point of doing that?
in my 03 it does that everytime you turn the key on....the odometer and tach go all the way up and then back down...what does it do

 

When you get it to go into the diagnostic mode you can read the service codes and other things. See PSD's post for how to interpret the display.