Service manual

MAN 650314:D
22
FUEL SETUP
The control box can read seven common fuel level sender resistance values. If your
sender is not shown in the table below, the system can be programmed to read a custom sender.
The table below shows the seven pre-programmed senders and their respective empty and full
resistance values.
Sender type Menu Empty R Full R
GM 0-30 ohm (mid 60’s-earlier)
GM 30
0 ohms 30 ohms
GM 0-90 ohm (mid 60’s-late 90’s)
GM 90
0 ohms 90 ohms
GM 40-250 ohm (late 90’s-later)
GM 250
40 ohms 249 ohms
FORD 73-10 ohm (earlier -late 80’s)
F 10
73 ohms 10 ohms
FORD 20-150 ohm (late 80’s-later)
F 150
20 ohms 150 ohms
VDO 10-180 ohm
V 180
10 ohms 180 ohms
SW/SUN 240-33
SW 33
240 ohms 33 ohms
User programmed
CUSTOM
User settable User settable
To get into the fuel setup menus, start with the key off.
Press and hold SW1 while turning the key on, then release SW1.
Press and release SW1 to scroll though the setup menus until you get to “setup fuel”.
When “setup fuel” is displayed, press and hold SW1 until “fuel sender” is displayed, then
release SW1.
This is the start of the fuel setup menus, now make your selection between “SENDER” “custom”
“test” or “done”. When you get to the desired sub-menu, press and hold the switch to select it.
Fuel sensor setup (fuel sender)
This menu is used to select the fuel level sensor type. The table above shows the seven
options and resistance ranges as well as the custom option.
When “fuel sender” is displayed, press and hold SW1 until you get “sender xx xx”
where “xx xx” is the current sensor it is set to.
Release SW1, and the current sensor selection is displayed.
Press and release SW1 to scroll through the sensor options “gm 30” “gm 90” “GM 250”
“f 10” “f 150” “v 180” “sw 33” “custom”
When the desired setting is displayed, press and hold SW1 until “DONE” is displayed.
Release the switch to go onto the next menu item.
Note: You must calibrate the custom sensor curve to your specific fuel sensor. If you are
selecting the Custom setting, follow the steps below to save your sensor’s resistance
curve.
Custom fuel sender curve setup (custom
customcustom
custom)
You will need to have the sender out of the tank, or begin with the tank empty and
add fuel during the custom fuel sender setup.
*** The factory default custom curve is 110 empty and 5 ohms full
***You must select “ custom
customcustom
custom ” in the Fuel Sender menu after you have calibrated the custom
curve so the system knows that you want to use it.
When “CUSTOM” is displayed press and hold SW1 until the message screen changes.
The message display will show “custom --%” and “xxx OHMS”, release SW1.
The message display will show “custom 00%” and “xxx OHMS”, where xxx is the current
resistance the control box is seeing from the fuel sensor. You should be able to move
the float up and down at this point and see the resistance values follow the curve of
your sensor.