Infiniti M45 (Y34). Manual - part 240

IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)

BL-185

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Diagnostic Procedure 2

AIS002B1

Self-diagnostic results:
“CHAIN OF ECM-IMMU” display on CONSULT-II screen

1. 

CONFIRM SELF-DIAGNOSTIC RESULTS

Confirm SELF-DIAGNOSTIC RESULTS “CHAIN OF ECM-IMMU”
displayed on the screen?

NOTE:
In rare case, “CHAIN OF ECM-IMMU” might be stored during key
registration procedure, even if the system is not malfunctioning.
Is CONSULT-II screen displayed as above?

YES

>> GO TO 2.

NO

>> GO TO 

BL-183, "Symptom Chart 1"

 .

2. 

CHECK POWER SUPPLY CIRCUIT FOR NATS IMMU

1.

Turn ignition switch OFF.

2.

Disconnect NATS IMMU connector M32.

3.

Check voltage between NATS IMMU connector M32 terminal 1
(W) and ground.

OK or NG

OK

>> GO TO 3. 

NG

>> Check the following.

●

10A fuse [No.32, located in fuse block (J/B) No. 2]

●

Harness for open or short between fuse and NATS
IMMU. Ref. part No. C1.

3. 

CHECK IGNITION SWITCH ON SIGNAL

1.

Turn ignition switch ON.

2.

Check voltage between NATS IMMU connector M32 terminal 3
(W/B) and ground.

OK or NG

OK

>> GO TO 4. 

NG

>> Check the following.

●

10A fuse [No.1, located in fuse block (J/B) No. 1]

●

Harness for open or short between fuse and NATS
IMMU. Ref. part No. C2.

PIIA1260E

1 (W) – Ground

: Battery voltage

PIIA3122E

3 (W/B) – Ground

: Battery voltage

PIIA3140E

BL-186

IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)

4. 

CHECK GROUND CIRCUIT FOR NATS IMMU

1.

Turn ignition switch OFF.

2.

Check continuity between NATS IMMU connector M32 terminal 9 (B/W) and ground.

OK or NG

OK

>> GO TO 5.

NG

>> Repair or replace harness between NATS IMMU and

ground. Ref. part No. C3.

5. 

CHECK COMMUNICATION LINE CIRCUIT

1.

Disconnect ECM connector.

2.

Check continuity between NATS IMMU connector M32 terminal
11 (G/W) and ECM connector F102 terminal 167 (G/W).

3.

Check continuity between NATS IMMU connector M32 terminal
11 (G/W) and ground.

OK or NG

OK

>> GO TO 6.

NG

>> Repair or replace harness between NATS IMMU and

ECM.

6. 

REPLACE NATS IMMU

1.

Replace NATS IMMU Ref. part No. A

2.

Perform initialization with CONSULT-II.
For initialization, refer to “CONSULT-II Operation Manual NATS-IVIS/NVIS”.

Does the engine start?

YES

>> NATS IMMU is malfunctioning.

NO

>> ECM is malfunctioning.

●

Replace ECM. Ref. part No. B

●

Perform initialization or re-communicating function.

–

For initialization, refer to “CONSULT-II Operation Manual NATS-IVIS/NVIS”.

–

For re-communicating function, refer to 

BL-174, "ECM Re-Communicating Function"

 .

9 (B/W) – Ground

: Continuity should exist.

PIIA3123E

11 (G/W) – 167 (G/W)

: Continuity should exist.

11 (G/W) – Ground

: Continuity should not exist.

PIIA3392E

IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)

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Diagnostic Procedure 3

AIS002B2

Self-diagnostic results:
“DIFFERENCE OF KEY” displayed on CONSULT-II screen

1. 

CONFIRM SELF-DIAGNOSTIC RESULTS

Confirm SELF-DIAGNOSTIC RESULTS “DIFFERENCE OF KEY”
displayed on CONSULT-II screen.

Is CONSULT-II screen displayed as above?

YES

>> GO TO 2.

NO

>> GO TO 

BL-183, "Symptom Chart 1"

 .

2. 

PERFORM INITIALIZATION WITH CONSULT-II

Perform initialization with CONSULT-II. Re-register all NATS ignition key IDs.
For initialization and registration of NATS ignition key IDs, refer to “CONSULT-II Operation Manual NATS-IVIS/
NVIS”.

NOTE:
If the initialization is not completed or malfunctions, CONSULT-II
shows message on the screen.

Can the system be initialized and can the engine be started with re-
registered NATS ignition key?

YES

>> Ignition key ID was unregistered. Ref. part No. D

NO

>> NATS IMMU is malfunctioning.

●

Replace NATS IMMU. Ref. part No. A

●

Perform initialization with CONSULT-II.

●

For initialization, refer to “CONSULT-II Operation
Manual NATS-IVIS/NVIS”.

Diagnostic Procedure 4

AIS002B3

Self-diagnostic results:
“ID DISCORD, IMM-ECM” displayed on CONSULT-II screen

1. 

CONFIRM SELF-DIAGNOSTIC RESULTS

Confirm SELF-DIAGNOSTIC RESULTS “ID DISCORD, IMM-ECM” displayed on CONSULT-II screen.

NOTE:
“ID DISCORD IMM-ECM”:
Registered ID of NATS IMMU is in discord with that of ECM.

Is CONSULT-II screen displayed as above?

YES

>> GO TO 2.

NO

>> GO TO 

BL-183, "Symptom Chart 1"

 .

PIIA1261E

SEL297W

PIIA1262E

BL-188

IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)

2. 

PERFORM INITIALIZATION WITH CONSULT-II

Perform initialization with CONSULT-II. Re-register all NATS ignition key IDs.
For initialization, refer to “CONSULT-II Operation Manual NATS-
IVIS/NVIS”.
NOTE:
If the initialization is not completed or malfunctions, CONSULT-II
shows message on the screen.

Can the system be initialized?

YES

>> Start engine. (END)

●

(System initialization had not been completed. Ref.
part No. F )

NO

>> ECM is malfunctioning.

●

Replace ECM. Ref. part No. B

●

Perform initialization or re-communicating function.

–

For initialization, refer to “CONSULT-II Operation Manual NATS-IVIS/NVIS”.

–

For re-communicating function, refer to 

BL-174, "ECM Re-Communicating Function"

 .

Diagnostic Procedure 5

AIS002B4

Self-diagnostic results:
“LOCK MODE” displayed on CONSULT-II screen

1. 

CONFIRM SELF-DIAGNOSTIC RESULTS

Confirm SELF-DIAGNOSTIC RESULTS “LOCK MODE” is displayed
on CONSULT-II screen.

Is CONSULT-II screen displayed as above?

YES

>> GO TO 2.

NO

>> GO TO 

BL-183, "Symptom Chart 1"

 .

2. 

ESCAPE FROM LOCK MODE

1.

Turn ignition switch OFF.

2.

Turn ignition switch ON with registered key. (Do not start engine.) Wait 5 seconds.

3.

Return the key to OFF position. Wait 5 seconds.

4.

Repeat steps 2 and 3 twice (total of three cycles).

5.

Start the engine.

Does engine start?

YES

>> System is OK (Now system is escaped from “LOCK MODE”).

NO

>> GO TO 3.

SEL297W

PIIA1264E