NATS (Nissan Anti-Theft System) / Gasoline engine — Trouble Diagnoses (Cont'd) — Diagnostic Procedure 1 (ECM INT CIRC-IMMU) (Supplement-VII)
EL-7065flowchartProcedure 1: ECM INT CIRC-IMMU → replace ECM + re-init. Reference letter B (ECM).
Trouble Diagnoses (Cont'd)
DIAGNOSTIC PROCEDURE 1
Self-diagnostic results: 'ECM INT CIRC-IMMU' displayed on CONSULT-II screen
Procedure 1 — ECM internal circuit fault
Probable Cause
Corrective Action
Confirm SELF-DIAGNOSTIC RESULTS 'ECM INT CIRC-IMMU' displayed on CONSULT-II screen. Ref. part No. B.
Replace ECM.
Replace ECM.
Perform initialization with CONSULT-II. For the operation of initialization, refer to 'CONSULT-II operation manual NATS'.
Cause
Confirm SELF-DIAGNOSTIC RESULTS 'ECM INT CIRC-IMMU' displayed on CONSULT-II screen. Ref. part No. B.
Fix
Replace ECM.
Cause
Replace ECM.
Fix
Perform initialization with CONSULT-II. For the operation of initialization, refer to 'CONSULT-II operation manual NATS'.
WARNING
Procedure 1 is short: ECM INT CIRC-IMMU is the internal-circuit fault DTC, which means the ECM's NATS communication circuit has failed internally. Repair = replace ECM. Re-init with CONSULT-II afterward to register IDs to the new ECM. ALL keys must be available.
See also
CONSULT-II operation manual NATS