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BL-146
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)
Revision: August 20072004 QX56
Trouble DiagnosesEIS002TT
SYMPTOM MATRIX CHART 1
Self-diagnosis related item
*: When IVIS (NATS) detects trouble, the security indicator lights up while ignition key is in the “ON” position.SymptomDisplayed “SELF-DIAG
RESULTS” on CON-
SULT-II screen.Diagnostic Procedure
(Reference page)System
(Malfunctioning part or
mode)Reference Part No. Of
Illustration On System
Diagram
Security indicator
lighting up*
Engine cannot be
startedCHAIN OF ECM-IMMU
[P1612]PROCEDURE 1
(BL-148
)In rare case, “CHAIN OF
ECM-IMMU” might be
stored during key regis-
tration procedure, even if
the system is not mal-
functioning.—
Open circuit in battery
voltage line of BCM cir-
cuitC1
Open circuit in ignition
line of BCM circuitC2
Open circuit in ground
line of BCM circuitC3
Open or short circuit
between BCM and ECM
communication lineC4
ECM B
BCM A
DIFFERENCE OF KEY
[P1615]PROCEDURE 2
(BL-149
)Unregistered key D
BCM A
CHAIN OF IMMU-KEY
[P1614]PROCEDURE 5
(BL-152
)Malfunction of key ID
chipE5
Communication line
between ANT/ AMP and
BCM:
Open circuit or short cir-
cuit of battery voltage
line or ground lineE1
E2
Open circuit in power
source line of ANT/ AMP
circuitE3
Open circuit in ground
line of ANT/ AMP circuitE4
NATS antenna amp. E6
BCM A
ID DISCORD, IMM-ECM
[P1611]PROCEDURE 3
(BL-150
)System initialization has
not yet been completed.F
ECM B
LOCK MODE
[P1610]PROCEDURE 4
(BL-151
)LOCK MODE D
Security indicator light-
ing up*DON'T ERASE
BEFORE CHECKING
ENG DIAGWORK FLOW
(BL-145
)Engine trouble data and
IVIS (NATS) trouble data
have been detected in
ECM—
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IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)
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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-140, "ECM Re-communicating Function" .
Diagnostic Procedure 2EIS002TV
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-146, "
SYMPTOM MATRIX CHART 1" . 67 (B) - Ground : Continuity should exist.
LIIA1040E
PIIA1261E
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BL-150
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)
Revision: August 20072004 QX56
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 3EIS002TW
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-146, "
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?
Ye s > >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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IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)
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Diagnostic Procedure 4EIS002TX
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-146, "
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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BL-152
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)
Revision: August 20072004 QX56
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 5EIS0 02 TY
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-146, "
SYMPTOM MATRIX CHART 1" .
2. CHECK NATS ANTENNA AMP. INSTALLATION
Check NATS antenna amp. installation. Refer to BL-156, "
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
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Revision: August 20072004 QX56
Diagnostic Procedure 6EIS002TZ
“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 (Y/R) - Ground : Battery voltage
LIIA1072E
23 (G/O) - Ground : Battery voltage
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BODY REPAIR
BL-177
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Revision: August 20072004 QX56
ENGINE COMPARTMENT
MEASUREMENT
WIIA0551E
Page 985 of 3371
BR-6
BRAKE PEDAL
Revision: August 20072004 QX56
BRAKE PEDALPFP:46501
Inspection and Adjustment EFS003P7
INSPECTION
1. Inspect the brake pedal free height "H" from the lower dash panel using tool.
2. Adjust the height referring to the following specifications.
CAUTION:
The adjustable pedal must be in the forwardmost (closest to
the floor) position for pedal height measurement.
Brake Pedal SpecificationsTool number : — (J-46532)
WFIA0160E
Free height "H" : 182.3 - 192.3 mm (7.18 - 7.57 in)
Depressed pedal height "D" [under a force of 490 N (50 kg, 110 lb) with engine
running]: More than 90.3 mm (3.55 in)
Clearance between pedal stopper and threaded end of stop lamp switch and
ASCD switch "C": 0.74 - 1.96 mm (0.029 - 0.077 in)
Pedal play "A" : 3 - 11 mm (0.12 - 0.43 in)
