User Manual

97055 v.8.0 45
other end connected to the Vacuum
Pump. Make sure the truck is in park
and start the engine. Measure the
vacuum at 1900 RPM. The Pump
should generate a minimum of 10
psi (20.4” Hg) of vacuum. Replace
the Vacuum pump if necessary.
After testing, turn off the engine and
disconnect the vacuum gauge and
reconnect the
5
⁄16” hose to Port 1 on
the Vacuum Solenoid.
Checking the operation of the
Exhaust Brake:
With the vehicle safely in park and the
engine off, disconnect the
7
⁄32” hose
connection (Port 2, Figure 20 & 21)
from the Vacuum Solenoid. Connect
this hose to a vacuum tester and
keep the other end of the
7
⁄32” hose
connected to the Exhaust Brake
Actuator. As vacuum is generated with
the tester, the Actuator should retract
and rotate the lever arm off it’s stop
(as seen in Figure 12). The lever arm
should travel 81.5 degrees without
binding or sticking. After testing,
disconnect the vacuum tester and
reconnect the
7
⁄32” hose to Port 2 on
the Vacuum Solenoid.
If the Exhaust Brake is slow to open,
check the Vacuum Solenoid’s brass
filter. If it is dirty, clean or replace it.
Replacements can be purchased from
Gale Banks Engineering or may be
found at a hardware or automotive
store.
Trans Slip code
If your Banks tuner is displaying a
transmission slip code whenever you
activate the overdrive disable switch,
make sure the tuner firmware is up to
date. Check at www.bankspower.com
on the Software Updates page located
under the Tech tab in the main menu.
-END SECTION 10-
Code Event Course of Action
1,1
1,2
2,2
3,1
3,2
Internal module
malfunction
Turn ignition OFF and check all the connections.
Turn ignition back ON and re-check for presence
of code.
2,3 Low battery voltage or
internal module
malfunction
Turn ignition OFF and check fuse-tap power
connection to the Banks Brake (in fuse box).
Make sure the vehicle’s battery is at least
12v. Make sure the CBC/SmartLock is properly
grounded and that the ground is clean and
free from corrosion. Turn ignition back ON and
re-check for presence of code.
2,4
3,4
OBD II communication
error
Turn ignition OFF and check the OBD II connection
and it’s interface cable. Turn ignition back ON and
re-check for presence of code.
If problem persists, call Gale Banks Engineering Tech Support.
Table 1