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GAP Diagnostic 2023-09-12 All Rights Reserved
User Manual G3 units: Version 37, Firmware V4.0
Oxydation Catalyst Replacement (2017+)
Usage
This routine is required if the oxidation catalyst is replaced.
4.7.5 FBH Fuel Burning / AHCM 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 repla
-
cing 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.
Note:
Only partial diagnosis of the AHCM / FBH was implemented by Jaguar Land Rover thus avai-
lable via the OBD port. The Webasto Thermo Test Software grants access to further functionalities and
is connected directly to the unit. More details here;
https://disco3.co.uk/wiki/Fuel_Burning_Heater#Thermo_Test_Software
4.7.6 IPC 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.
On some platforms, 2016, the service reset
may not work. Please contact us for assistance. On L550 Discovery Sport for example, an update of
the IPC Instrument Pack ECU may be required.
*The reset can be done without using a diagnostic tool.
L316 and 2017+:
The reset routine is found in the engine ECU
