Page 4 of 37

82A-4V1 MR-376-X76-82A000$010.mif
ENGINE IMMOBILISER
Fault finding – Introduction82A
SVT
Vdiag No.: 04
Faults
Faults are declared present or stored (depending on whether they appeared in a certain context and have
disappeared since, or whether they remain present but are not diagnosed within the current context).
The present or stored status of faults must be considered when the diagnostic tool is used after the + after ignition
feed is switched on (without operating the system components).
For a present fault, apply the procedure described in the Interpretation of faults section.
For a stored fault, note the faults displayed and apply the Notes section.
If the fault is confirmed when the instructions in the Notes section are applied, the fault is present. Deal with the
fault.
If the fault is not confirmed, check:
– the electrical lines which correspond to the fault,
– the connectors for these lines (for oxidation, bent pins, etc.),
– the resistance of the faulty component,
– the condition of the wires (melted or split insulation, wear).
Customer complaints - Fault finding chart
If the test with the diagnostic tool is OK but the customer complaint is still present, the fault should be processed by
customer complaints.
A summary of the overall procedure to follow is provided on the following page in the form of a flow chart
Page 13 of 37
82A-13
AFTER REPAIRDeal with any faults displayed by the diagnostic tool.
Clear the faults from the computer memory using command RZ001 Fault memory.
V1 MR-376-X76-82A000$070.mif
82A
SVT
Vdiag No.: 04
DF001
PRESENT
OR
STOREDEXTERNAL GPS AERIAL
NOTESSwitch on the vehicle + after ignition feed.
Check the configuration of the anti-theft tracking unit by reading configuration LC001 External GPS aerial.
If the check is not correct, use command CF001 CONFIGURE SVT.
Check the condition of the aerial visually and by hand.
Disconnect then reconnect the aerial.
If the fault is still present, contact the Techline.
SVT_V04_DF001
ENGINE IMMOBILISER
Fault finding – Interpretation of faults
Page 14 of 37
82A-14
AFTER REPAIRAfter replacing the computer, consult the Replacement of components section.
Deal with any faults displayed by the diagnostic tool.
Clear the faults from the computer memory using command RZ001 Fault memory.
V1 MR-376-X76-82A000$070.mif
ENGINE IMMOBILISER
Fault finding – Interpretation of faults82A
SVT
Vdiag No.: 04
DF002
PRESENT
OR
STOREDGPS INTERNAL ERROR
NOTESSwitch on the vehicle + after ignition feed.
Replace the anti-theft tracking unit (see MR 388, 451, 364, 370, 377, 423, 430, 374, Mechanical, 82A,
Immobiliser, Tracking unit: Removal - Refitting).
If the fault is still present, contact the Techline.
SVT_V04_DF002
Page 15 of 37
82A-15
AFTER REPAIRAfter replacing the computer, consult the Replacement of components section.
Deal with any faults displayed by the diagnostic tool.
Clear the faults from the computer memory using command RZ001 Fault memory.
V1 MR-376-X76-82A000$070.mif
ENGINE IMMOBILISER
Fault finding – Interpretation of faults82A
SVT
Vdiag No.: 04
DF003
PRESENT
OR
STOREDGSM INTERNAL ERROR
NOTESSwitch on the vehicle + after ignition feed.
Replace the anti-theft tracking unit (see MR 388, 451, 364, 370, 377, 423, 430, 374, Mechanical, 82A,
Immobiliser, Tracking unit: Removal - Refitting).
If the fault is still present, contact the Techline.
SVT_V04_DF003
Page 16 of 37

82A-16
AFTER REPAIRAfter replacing the computer, consult the Replacement of components section.
Deal with any faults displayed by the diagnostic tool.
Clear the faults from the computer memory using command RZ001 Fault memory.
V1 MR-376-X76-82A000$070.mif
ENGINE IMMOBILISER
Fault finding – Interpretation of faults82A
SVT
Vdiag No.: 04
DF004
PRESENT
OR
STOREDBATTERY INTERNAL FAULT
NOTESSwitch on the vehicle + after ignition feed.
Conditions for applying the fault finding procedure to stored faults:
The fault is declared present if the battery voltage is X < 3.5 V after 5 voltage checks.
Check the voltage and the battery connections, component code 107.
Repair if necessary.
If the fault is still present and the internal battery is currently charging, wait for approximately 2 hours so that the
internal battery voltage is X > 3.5 V.
If the fault is still present, replace the anti-theft tracking unit, component code 2186 (see MR 388, 451, 364, 370,
377, 423, 430 or 374, Mechanical, 82A, Immobiliser, Tracking unit: Removal - Refitting).
If the fault is still present, contact the Techline.
SVT_V04_DF004
Page 17 of 37
82A-17
AFTER REPAIRAfter replacing the computer, consult the Replacement of components section.
Deal with any faults displayed by the diagnostic tool.
Clear the faults from the computer memory using command RZ001 Fault memory.
V1 MR-376-X76-82A000$070.mif
ENGINE IMMOBILISER
Fault finding – Interpretation of faults82A
SVT
Vdiag No.: 04
DF005
PRESENT
OR
STOREDSVT INTERNAL FAULT
NOTESSwitch on the vehicle + after ignition feed.
Replace the anti-theft tracking unit (see MR 388, 451, 364, 370, 377, 423, 430 or 374, Mechanical, 82A,
Immobiliser, Tracking unit: Removal - Refitting).
If the fault is still present, contact the Techline.
SVT_V04_DF005
Page 18 of 37
82A-18
AFTER REPAIRAfter replacing the computer, consult the Replacement of components section.
Deal with any faults displayed by the diagnostic tool.
Clear the faults from the computer memory using command RZ001 Fault memory.
V1 MR-376-X76-82A000$070.mif
ENGINE IMMOBILISER
Fault finding – Interpretation of faults82A
SVT
Vdiag No.: 04
DF006
PRESENT
OR
STOREDSVT SYSTEM INTERNAL FAULT
NOTESSwitch on the vehicle + after ignition feed.
Replace the anti-theft tracking unit (see MR 388, 451, 364, 370, 377, 423, 430 or 374, Mechanical, 82A,
Immobiliser, Tracking unit: Removal - Refitting).
If the fault is still present, contact the Techline.
SVT_V04_DF006
Page 19 of 37
82A-19
AFTER REPAIRDeal with any faults displayed by the diagnostic tool.
Clear the faults from the computer memory using command RZ001 Fault memory.
V1 MR-376-X76-82A000$070.mif
ENGINE IMMOBILISER
Fault finding – Interpretation of faults82A
SVT
Vdiag No.: 04
DF007
PRESENTCONFIGURATION
NOTESSwitch on the vehicle + after ignition feed.
Configure the system (see Configuration and programming).
Note:
After configuring, switch off the ignition, wait 2 minutes then switch on the ignition again to allow the configuration
to register.
Check the computer configuration by reading configuration LC001 External GPS aerial.
SVT_V04_DF007P