zero point calibration

[riceandpho]

is this the same way instead of using the jumper wires?
reason is that my fuel gauge was being funky, so once the needle droped to 1/4, i filled it up, it went to half way mark, but i know my tank is full. then i get home and parked my truck, needle back to full mark now.
INCLINATION SENSOR ZERO DEGREE
CORRECTION
NOTICE:
• When replacing or removing/installing the
combination meter assembly and inclination
sensor assembly, be sure to perform zero degree
correction of the inclination sensor.
• When performing zero degree correction, install
the combination meter assembly and perform it in
level surface.
• Also perform zero degree correction when the
body level setting is inclined because of vehicle
height adjustment.
(a) Turn the ignition switch off.
(b) While pressing the RESET switch, turn the ignition
switch on.
(c) Within 5 seconds after the ignition switch is turned
on, repeat pressing and releasing the RESET
switch 3 times and keep holding the last press for
more than 5 seconds. (Buzzer sounds for a second)
NOTICE:
If the buzzer does not sound, perform this
procedure from the beginning.
(d) Release the RESET switch when buzzer sounds.
(e) Press the RESET switch again and keep pressing
for more than 5 seconds. (Buzzer sounds for a
second again)
HINT:
• When the buzzer sounds twice, reset operation is
completed.
• The buzzer sound of the first and second time is
the same.
NOTICE:
If the buzzer does not sound or keep sounding
for more than 1 second, perform the procedure
from the beginning.

 

[riceandpho]

got it from here in the service manual, meter section.
View attachment 0520012.pdf

 

[ebg18t]

It is worth a try. I just use the TIS Techstream.