2003 Infiniti Q45 V8-4.5L (VK45DE) IVIS (Infiniti Vehicle Immobilizer System-NATS) Schematic

Work Flow
1. Check the symptom and customer's requests.
2. Understand the outline of system.
3. Perform the preliminary check. Refer to BL-70, "Preliminary Check". See: Initial
Inspection (Preliminary Check)\Preliminary Check
4. Perform the communication inspection. If CONSULT-II is used, refer to BL-73,
"IVMS COMMUNICATION INSPECTION". See: Description of On-Board Diagnostics\With
Manufacturer's Scan Tool (Infiniti CONSULT-II)\IVMS Communication Inspection If
CONSULT-II is not used, refer to BL-77, "COMMUNICATION DIAGNOSIS". See:
Displaying & Reading Trouble Codes\Without Scan Tool\Communication Diagnosis Procedure Is
the communication diagnosis result OK? OK: GO TO step 7. NG: GO TO step 5.
5. Repair or replace depending on the diagnosis result.
6. Perform the communication diagnosis again. If CONSULT-II is used, refer to
BL-73, "IVMS COMMUNICATION INSPECTION". See: Description of On-Board
Diagnostics\With Manufacturer's Scan Tool (Infiniti CONSULT-II)\IVMS Communication Inspection
If CONSULT-II is not used, refer to BL-77, "COMMUNICATION DIAGNOSIS". See:
Displaying & Reading Trouble Codes\Without Scan Tool\Communication Diagnosis Procedure Is
communication diagnosis result OK? OK: GO TO step 7. NG: GO TO step 5.
7. Referring to Trouble diagnosis chart, repair or replace the cause of the incident.
Refer to "Trouble Diagnosis Chart by Symptom".
8. Does the remote keyless entry system operate normally? YES: GO TO step 9. NO:
GO TO step 7.
9. Inspection end.

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