(3) Remove clamp fr om the fuel lin e at the fuel
tank connection an d separate t he line from t he tank.
(4) Remove a ny retainin g clips and remove the
fuel lin e from vehicle.
INSTALLATION
WARNING: Do not operate the diesel supplemental
cabin heater in an enclosed area such as a garage
that does not have exhaust ventilation facilities.
Always vent the cabin heater exhaust when operat-
ing the cabin heater. Allow the diesel supplemental
cabin heater to cool before performing any service
procedures to the cabin heater. Verify that all diesel
supplemental cabin heater fuel lines are securely
fastened to their respective components before per-
forming any service procedures to the cabin heater.
Failure to follow these warnings may result in pos-
sible personal injury or death.
NOTE: Verify that there is more than 1/8 of a tank of
fuel in the vehicle’s fuel tank before performing this
procedure. Add fuel, if necessary.
(1) In st all the cabin hea ter fuel supply line into
vehicle and fuel line r etainer s.
(2) In st all the fu el line con nection at the fuel ta nk
and tight en the connect ion securely.
(3) In st all the fuel line at t he dosing pump an d
tighten the con nection securely.
(4) Lower th e vehicle.
NOTE: Failure to prime the dosing pump after drain-
ing the supplemental cabin fuel line will prevent
cabin heater activation during the first attempt to
start the cabin heater. This will also set a diagnostic
trouble code (DTC) in the cabin heater control’s
memory. Do not perform the Dosing Pump Priming
procedure if an attempt was made to start the cabin
heater without priming the dosing pump first. This
will put excess fuel in the cabin heater and cause
smoke to emit from the cabin heater exhaust pipe
when cabin heater activation occurs.
(5) Connect t he DRBIII! scan tool to the diagnos-
tic lin k conn ector.
(6) Turn the ignition to th e ON posit ion.
NOTE: Do not activate the dosing pump prime more
than one time. This will put excess fuel in the sup-
plemental cabin heater and cause smoke to emit
from the cabin heater exhaust pipe when cabin
heater activation occurs.
NOTE: A clicking noise heard coming from the dos-
ing pump indicates that the pump is operational.
Fig. 3 Cabin Heater Dosing Pump Fuel Line
1 - FUEL LINE
2 - RETAINING CLAMP
3 - DOSING PUMP
4 - HEATER AIR INTAKE PIPE
VA CABIN HEATER 24 - 109
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