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GAP Diagnostic 2019-07-15 All Rights Reserved
User Manual : Version 33, Firmware V3.0
4.7.5 Fuel Burning/Auxiliary Heater
(L322-10, L319, L320)
Fuel Priming
This routine will remove air from the system (if present) replacing it with fuel.
Check Operation
This routine will activate the fuel burning/auxiliary heater regardless of the ambient and engine tem
-
peratures. This routine will begin by clearing faults stored in the ECU. If the routine fails, proceed with
a read fault and fix the issue.
Note:
Use the
Set
HVAC for AHCM (L322-10)
prior to using the Fuel Priming or Check Operation
routines on a L322-10.
Usage
These functions are useful to get the system up and running after a long period of inactivity, when
replacing the unit or simply to diagnose a problem.
Preparation (for both functions)
• Turn the key to the ON (position II) or press the start button without starting the engine.
• Turn off the HVAC system.
4.7.6 Instrument Pack
Service Interval Reset
(All except L322-02, L359 2013+*, L538*)
This resets the service reminder displayed on the instrument cluster.
Note:
Please perform the appropriate maintenance prior to resetting. This procedure requires the
engine to be turned OFF. The ignition must be turned ON.
*The reset can be done without using a diagnostic tool.
L316:
The reset routine is found in the engine ECU
CAUTION
For vehicles equipped with a diesel particulate filer, the reset func
-
tion affects the regeneration process. Therefore, an oil change should
be made at the same time as reset. Not changing the oil can cause
serious engine damage.
