Jaguar Code Retrieval
Accessing Diagnostic Trouble Codes
LUCAS MICROFUELING ELECTRONIC FUEL INJECTION
The ECU is capable of self-diagnosis. In the event of a fuel injection
system failure, the words FUEL and FAIL will be displayed alternately on the
trip computer. The diagnostic trouble code (DTC) will be stored in ECU
memory, allowing the vehicle to be driven carefully until repairs can be
made.
To obtain stored diagnostic trouble code, switch ignition Off, then On.
After approximately 10 seconds, one or more diagnostic trouble codes will be
displayed.
LUCAS ENGINE MANAGEMENT ELECTRONIC FUEL INJECTION
In the event of an engine management fault occurring, the "Check
Engine" lamp will be illuminated. Additional information can be
displayed by pressing the Vehicle Condition Monitor (VCM) button located on
the trip computer panel.
When a malfunction occurs, the appropriate diagnostic trouble code will
be retained in ECU memory. The "Check Engine" lamp will stay on
until the malfunction is repaired and the ECU memory is cleared.
When a fault has been signaled, the likely area responsible for the
malfunction can be indicated when the vehicle is stationary. Switch off
ignition for a minimum of five seconds, then turn ignition to position II
(do not start engine) and press VCM button. This will cause trip computer to
illuminate the applicable diagnostic trouble code. The diagnostic trouble
codes are displayed in order of priority, one at a time. The next DTC is
only displayed when the first DTC is repaired or cleared from memory.
MARELLI ENGINE MANAGEMENT SYSTEM
Place ignition switch in the Off position for five seconds, then turn
ignition switch to the No. 2 position without starting engine. Press VCM
(Vehicle Condition Monitor) button. This will cause the VCM/Trip monitor
computer to display the applicable diagnostic trouble code.
CLEARING DIAGNOSTIC TROUBLE CODES
After service, the diagnostic trouble code's retained in the ECU memory
must be cleared by disconnecting the battery ECU pin ground cable or cleared
by Jaguar diagnostic.
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