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BL-148
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)
Revision: November 20092006 QX56
4. CHECK GROUND CIRCUIT FOR BCM
1. Turn ignition switch OFF.
2. Check continuity between BCM connector M18 terminal 67 and ground.
OK or NG
OK >> GO TO 5.
NG >> Repair or replace harness. Ref. part No. C3
5. REPLACE BCM
1. Replace BCM. 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 >> BCM 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-139, "ECM Re-communicating Function" .
Diagnostic Procedure 2EIS0061Q
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-145, "
SYMPTOM MATRIX CHART 1" .
67 - Ground
:Continuity should exist.
LIIA1040E
PIIA1261E
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IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)BL-149
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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 >> BCM is malfunctioning.
Replace BCM. Ref. part No. A
Perform initialization with CONSULT-II.
For initialization, refer to “CONSULT-II Operation
Manual NATS-IVIS/NVIS ”.
Diagnostic Procedure 3EIS0061R
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 BCM is in discord with that of ECM.
Is CONSULT-II screen displayed as above?
YES >> GO TO 2.
NO >> GO TO BL-145, "
SYMPTOM MATRIX CHART 1" .
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 with CONSULT-II.
For initialization, refer to “CONSULT-II Operation Manual NATS-IVIS/NVIS ”.
SEL297W
PIIA1262E
SEL297W
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BL-150
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)
Revision: November 20092006 QX56
Diagnostic Procedure 4EIS0061S
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-145, "
SYMPTOM MATRIX 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”). Clear all codes.
NO >> GO TO 3.
3. PERFORM INITIALIZATION WITH CONSULT-II
Perform initialization with CONSULT-II.
For initialization, refer to “CONSULT-II Operation Manual NATS-
IVIS/NVIS ”.
NOTE:
If the initialization is not completed or malfunctions, CONSULT-II
shows the message on the screen.
Can the system be initialized?
YES >> System is OK.
NO >> GO TO 4.
PIIA1264E
SEL297W
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IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)BL-151
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4. PERFORM INITIALIZATION WITH CONSULT-II AGAIN
1. Replace BCM.
2. Perform initialization with CONSULT-II. For initialization, refer to “CONSULT-II Operation Manual NATS-
IVIS/NVIS ”.
NOTE:
If the initialization is not completed or malfunctions, CONSULT-II
shows the message on the screen.
Can the system be initialized?
YES >> System is OK. BCM is malfunctioning. Ref. part No. A
NO >> ECM is malfunctioning.
Replace ECM. Ref. part No. B
Perform initialization with CONSULT-II.
For initialization, refer to “CONSULT-II Operation
Manual NATS-IVIS/NVIS ”.
Diagnostic Procedure 5EIS0061T
Self-diagnostic results:
“CHAIN OF IMMU-KEY” displayed on CONSULT-II screen
1. CONFIRM SELF-DIAGNOSTIC RESULTS
Confirm SELF-DIAGNOSTIC RESULTS “CHAIN OF IMMU-KEY ”
displayed on CONSULT-II screen.
Is CONSULT-II screen displayed as above?
YES >> GO TO 2.
NO >> GO TO BL-145, "
SYMPTOM MATRIX CHART 1" .
2. CHECK NATS ANTENNA AMP. INSTALLATION
Check NATS antenna amp. installation. Refer to BL-155, "
How to Replace NATS Antenna Amp." .
OK or NG
OK >> GO TO 3.
NG >> Reinstall NATS antenna amp. correctly.
3. CHECK IVIS (NATS) IGNITION KEY ID CHIP
Start engine with another registered NATS ignition key.
Does the engine start?
YES >> Ignition key ID chip is malfunctioning.
Replace the ignition key. Ref. part No. E5
Perform initialization with CONSULT-II.
For initialization, refer to “CONSULT-II Operation Manual NATS-IVIS/NVIS ”.
NO >> GO TO 4.
SEL297W
PIIA1263E
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BL-152
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)
Revision: November 20092006 QX56
4. CHECK POWER SUPPLY FOR NATS ANTENNA AMP.
1. Turn ignition switch ON.
2. Check voltage between NATS antenna amp. connector M21 terminal 1 and ground.
OK or NG
OK >> GO TO 5.
NG >> Repair or replace fuse or harness. Ref. part No. E3
5. CHECK NATS ANTENNA AMP. SIGNAL LINE- 1
Check voltage between NATS antenna amp. connector M21 terminal
2 and ground with analog tester.
OK or NG
OK >> GO TO 6.
NG >>
Repair or replace harness.
NOTE:
If harness is OK, replace BCM, perform initialization with CONSULT-II. For initialization, refer to
“CONSULT-II Operation Manual NATS-IVIS/NVIS ”.
1 - Ground
:Battery voltage
LIIA1498E
LIIA1642E
Connector terminals
(wire colors) Position of ignition key cylinder Voltage (V)
(Approx.)
( + ) ( - )
2 Ground Before inserting ignition key
Battery voltage
After inserting ignition key Pointer of tester should move for approx. 30 seconds,
then return to battery voltage
Just after turning ignition switch ON Pointer of tester should move for approx. 1 second,
then return to battery voltage
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6. CHECK NATS ANTENNA AMP. SIGNAL LINE- 2
Check voltage between NATS antenna amp. connector M21 terminal
4 and ground with analog tester.
OK or NG
OK >> GO TO 7.
NG >>
Repair or replace harness.
NOTE:
If harness is OK, replace BCM, perform initialization with CONSULT-II. For initialization, refer to
“CONSULT-II Operation Manual NATS-IVIS/NVIS ”.
7. CHECK NATS ANTENNA AMP. GROUND LINE CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect NATS antenna amp. connector.
3. Check continuity between NATS antenna amp. connector M21 terminal 3 and ground.
OK or NG
OK >> NATS antenna amp. is malfunctioning. Ref. part No. E6
NG >>
Repair or replace harness.
NOTE:
If harness is OK, replace BCM, perform initialization
with CONSULT-II. For initialization, refer to “CON-
SULT-II Operation Manual NATS-IVIS/NVIS ”.
LIIA1643E
Connector terminals
(wire colors) Position of ignition key cylinder Voltage (V)
(Approx.)
( + ) ( - )
4 Ground Before inserting ignition key
Battery voltage
After inserting ignition key Pointer of tester should move for approx. 30 seconds,
then return to battery voltage
Just after turning ignition switch ON Pointer of tester should move for approx. 1 second,
then return to battery voltage
3 - Ground :Continuity should exist.
LIIA1283E
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BL-154
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)
Revision: November 20092006 QX56
Diagnostic Procedure 6EIS0061U
“SECURITY INDICATOR LAMP DOES NOT LIGHT UP”
1. CHECK FUSE
Check 10A fuse [No.19, located in the fuse block (J/B)]
OK or NG
OK >> GO TO 2.
NG >> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse.
2. CHECK SECURITY INDICATOR LAMP
1. Start engine and turn ignition switch OFF.
2. Check the security indicator lamp lights up.
OK or NG
OK >> Inspection End.
NG >> GO TO 3.
3. CHECK SECURITY INDICATOR LAMP POWER SUPPLY CIRCUIT
1. Disconnect security indicator lamp.
2. Check voltage between security indicator lamp connector M24 terminal 8 and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace harness.
4. CHECK BCM (NATS CONTROL UNIT) FUNCTION
1. Connect security indicator lamp.
2. Disconnect BCM.
3. Check voltage between BCM connector M18 terminal 23 and ground.
OK or NG
OK >> BCM is malfunctioning.
Replace BCM. Ref. part No. A
Perform initialization with CONSULT-II.
For initialization, refer to “CONSULT-II Operation
Manual NATS-IVIS/NVIS ”.
NG >> Check the following:
Harness for open or short between security indicator lamp and BCM (NATS control unit).
Indicator lamp condition
Security indicator lamp should light up.
8 - Ground
:Battery voltage
LIIA1072E
23 - Ground :Battery voltage
LIIA0523E
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IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)BL-155
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How to Replace NATS Antenna Amp.EIS0061V
NOTE:
If NATS antenna amp. is not installed correctly, IVIS (NATS)
system will not operate properly and SELF-DIAG RESULTS
on CONSULT-II screen will show “LOCK MODE” or “CHAIN
OF IMMU-KEY”.
Initialization is not necessary when only NATS antenna
amp. is replaced with a new one.
SIIA1683E