ignition INFINITI QX56 2006 Factory Service Manual

AUTOMATIC BACK DOOR SYSTEMBL-121
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Revision: November 2009 2006 QX56
Pinch Strip System InspectionEIS00619
1. PINCH STRIP SIGNAL INSPECTION
1. Turn ignition switch OFF.
2. While operating the pinch strip, check voltage between back door control unit connector B55 terminals 19, 20 and ground.
OK or NG
OK >> Pinch strip switch is OK.
NG >> GO TO 2.
2. PINCH STRIP CIRCUIT INSPECTION
1. Disconnect pinch strip and back door control unit.
2. Check continuity between pinch strip connector D715 (RH), D517 (LH) terminal 1, 2 and back door control unit connector
B55 terminal 5, 19 (RH), 20 (LH).
OK or NG
OK >> GO TO 3.
NG >> Repair the harness between the pinch strip and the back door control unit.
3. PINCH STRIP GROUND INSPECTION
1. Connect back door control unit connector.
2. Check continuity between pinch strip connector terminal 2 and ground.
OK or NG
OK >> Replace the pinch strip.
NG >> Repair or replace harness.
Te r m i n a l s ConditionVoltage (V)
(Approx.)
(+) (-)
19
20 Ground Pinch strip operation
0
Other 4
LIIA0811E
1 - 19 : Continuity should exist.
1 - 20 : Continuity should exist.
2 - 5 : Continuity should exist.
LIIA0815E
2 - Ground: Continuity should exist.
LIIA0817E

BL-122
AUTOMATIC BACK DOOR SYSTEM
Revision: November 20092006 QX56
Back Door Warning Chime System InspectionEIS0061A
1. BACK DOOR WARNING CHIME CIRCUIT INSPECTION
1. Disconnect back door warning chime and back door control unit.
2. Check continuity between back door warning chime connector D514 terminal 1 and back door control unit connector B55 termi-
nal 6.
OK or NG
OK >> GO TO 2.
NG >> Repair or replace harness.
2. WARNING CHIME CIRCUIT INSPECTION
Check continuity between back door warning chime connector D514
terminal 2 and back door control unit connector B55 terminal 9.
OK or NG
OK >> Replace warning chime.
NG >> Repair or replace harness.
Half-Latch Switch System InspectionEIS0061B
1. HALF-LATCH SWITCH SIGNAL INSPECTION
1. Turn ignition switch OFF.
2. While fully opening and closing the back door, check voltage between back door control unit connector B55 terminal 22 and
ground.
OK or NG
OK >> Half-latch switch is OK.
NG >> GO TO 2. 1 - 6
: Continuity should exist.
LIIA0822E
2 - 9: Continuity should exist.
LIIA2182E
22 - Ground
LIIA0826EPIIA2169E

AUTOMATIC BACK DOOR SYSTEMBL-123
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Revision: November 2009 2006 QX56
2. HALF-LATCH SWITCH CIRCUIT INSPECTION
1. Disconnect back door latch and back door control unit connector.
2. Check continuity between back door latch (half-latch switch) connector D503 terminal 6 and back door control unit connector
B55 terminal 22.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.
3. HALF-LATCH SWITCH GROUND INSPECTION
Check continuity between back door latch (half-latch switch) connec-
tor D503 terminal 8 and ground.
OK or NG
OK >> Replace the back door latch.
NG >> Repair or replace harness.
Open Switch System InspectionEIS0061C
1. OPEN SWITCH SIGNAL INSPECTION
1. Turn ignition switch OFF.
2. While fully closing and opening the back door, check voltage between back door control unit connector B55 terminal 15 and
ground.
OK or NG
OK >> Open switch is OK.
NG >> GO TO 2. 6 - 22
: Continuity should exist.
LIIA0827E
8 - Ground: Continuity should exist.
LIIA0828E
15 - Ground
LIIA0829EWIIA1047E

BL-124
AUTOMATIC BACK DOOR SYSTEM
Revision: November 20092006 QX56
2. OPEN SWITCH CIRCUIT INSPECTION
1. Disconnect back door latch and back door control unit connector.
2. Check continuity between back door latch (open switch) connec- tor D503 terminal 4 and back door control unit connector B55
terminal 15.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.
3. OPEN SWITCH GROUND INSPECTION
Check continuity between back door latch (open switch) connector
D503 terminal 8 and ground.
OK or NG
OK >> Replace the back door latch.
NG >> Repair or replace harness.
Close Switch System InspectionEIS0061D
1. CLOSE SWITCH SIGNAL INSPECTION
1. Turn ignition switch OFF.
2. While fully opening and closing the back door, check voltage between back door control unit connector B55 terminal 14 and-
ground.
OK or NG
OK >> Close switch is OK.
NG >> GO TO 2. 4 - 15
: Continuity should exist.
LIIA0830E
8 - Ground: Continuity should exist.
LIIA0828E
14 - Ground
LIIA0831EWIIA1047E

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2. CLOSE SWITCH CIRCUIT INSPECTION
1. Disconnect back door latch and back door control unit.
2. Check continuity between back door latch (close switch) con- nector D503 terminal 5 and back door control unit connector
B55 terminal 14.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.
3. CLOSE SWITCH GROUND INSPECTION
Check continuity between back door latch (close switch) connector
D503 terminal 8 and ground.
OK or NG
OK >> Replace the back door latch.
NG >> Repair or replace harness.
Back Door Handle Switch System InspectionEIS0061E
1. BACK DOOR HANDLE SWITCH SIGNAL INSPECTION
1. Turn ignition switch OFF.
2. While operating the back door handle switch, check voltage between back door control unit connector B55 terminal 26 and
ground.
OK or NG
OK >> Back door handle switch is OK.
NG >> GO TO 2. 5 - 14
: Continuity should exist.
LIIA0832E
8 - Ground: Continuity should exist.
LIIA0828E
Te r m i n a l s
ConditionVoltage (V)
(Approx.)
(+) (-)
26 Ground Back door handle switch (ON)
0
Other (OFF) Battery voltage
LIIA0833E

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AUTOMATIC BACK DOOR SYSTEM
Revision: November 20092006 QX56
2. BACK DOOR HANDLE SWITCH CIRCUIT INSPECTION
1. Disconnect back door handle switch and back door control unit.
2. Check continuity between back door handle switch connector D706 terminal 3 and back door control unit connector B55 termi-
nal 26.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace harness.
3. BACK DOOR HANDLE SWITCH GROUND INSPECTION
Check continuity between back door handle switch connector D706
terminal 4 and ground.
OK or NG
OK >> Replace the back door handle switch.
NG >> Repair or replace harness.
Cinch Latch Motor System InspectionEIS0061F
1. CINCH LATCH MOTOR SIGNAL INSPECTION
1. Turn ignition switch OFF.
2. While fully opening and closing the back door, check voltage between back door control unit connector B55 terminals 11, 12
and ground.
OK or NG
OK >> GO TO 2.
NG >> Replace the back door control unit.
2. CINCH LATCH MOTOR CIRCUIT INSPECTION
1. Disconnect back door latch and back door control unit.
2. Check continuity between back door latch (cinch latch motor) connector D503 terminals 1, 2 and back door control unit con-
nector B55 terminals 11, 12.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness. 3 - 26
: Continuity should exist.
WIIA0604E
4 - Ground: Continuity should exist.
WIIA0605E
11 - Ground: Battery voltage
12 - Ground : Battery voltage
LIIA2397E
1 - 12 : Continuity should exist.
2 - 11 : Continuity should exist.
LIIA0837E

BL-138
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)
Revision: November 20092006 QX56
System DescriptionEIS0061H
IVIS (Infinity Vehicle Immobilizer System-NATS) has the following immobilizer functions:

Since only IVIS (NATS) ignition keys, whose IDs have been registered into the ECM and BCM, allow the
engine to run, operation of a stolen vehicle without a IVIS (NATS) registered key is prevented by IVIS
(NATS).
IVIS (NATS) will immobilize the engine if someone tries to start it without the registered key of IVIS
(NATS).

All of the originally supplied ignition key IDs have been IVIS (NATS) registered.
If requested by the vehicle owner, a maximum of five key IDs can be registered into the IVIS (NATS) com-
ponents.

The security indicator blinks when the ignition switch is in OFF or ACC position. IVIS (NATS) warns out-
siders that the vehicle is equipped with the anti-theft system.

When IVIS (NATS) detects a malfunction, the security indicator lamp lights up while ignition key is in the
ON position.

IVIS (NATS) trouble diagnoses, system initialization and additional registration of other IVIS (NATS) igni-
tion key IDs must be carried out using CONSULT-II hardware and CONSULT-II IVIS (NATS) software.
When IVIS (NATS) initialization has been completed, the ID of the inserted ignition key is automatically
IVIS (NATS) registered. Then, if necessary, additional registration of other IVIS (NATS) ignition key IDs
can be carried out.
Regarding the procedures of IVIS (NATS) initialization and IVIS (NATS) ignition key ID registration, refer
to CONSULT-II Operation Manual NATS-IVIS/NVIS.

When servicing a malfunction of the IVIS (NATS) (indicated by lighting up of Security Indicator
Lamp) or registering another IVIS (NATS) ignition key ID, it may be necessary to re-register origi-
nal key identification. Therefore, be sure to receive ALL KEYS from vehicle owner.
System CompositionEIS0061I
The immobilizer function of the IVIS (NATS) consists of the following:

NATS ignition key

NATS antenna amp. located in the ignition key cylinder

Body control module (BCM)

Engine control module (ECM)

Security indicator
NOTE:
The communication between ECM and BCM uses the CAN communication system.
PIIA1121E

IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)BL-139
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Revision: November 2009 2006 QX56
ECM Re-communicating FunctionEIS0061J
The following procedure can automatically perform re-communication of ECM and BCM, but only when the
ECM has been replaced with a new one which has never been energized on-board.
(In this step, initialization procedure by CONSULT-II is not necessary)
NOTE:

When registering new key IDs or replacing the ECM other than brand new, refer to CONSULT-II
Operation Manual NATS-IVIS/NVIS.

If multiple keys are attached to the key holder, separate them before work.

Distinguish keys with unregistered key ID from those with registered ID.
1. Install ECM.
2. Using a registered key (*1), turn ignition switch to ON. *1: To perform this step, use the key that has been used before performing ECM replacement.
3. Maintain ignition switch in ON position for at least 5 seconds.
4. Turn ignition switch to OFF.
5. Start engine. If engine can be started, procedure is completed.
If engine cannot be started, refer to CONSULT-II Operation Manual NATS-IVIS/NVIS and initialize control
unit.

IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)BL-141
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Revision: November 2009 2006 QX56
Terminals and Reference Value for BCMEIS0061L
CONSULT-IIEIS0061M
CONSULT-II INSPECTION PROCEDURE
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which carries out CAN communication.
1. Turn ignition switch OFF.
2. Insert IVIS (NATS) program card into CONSULT-II.
3. Connect CONSULT-II and CONSULT-II CONVERTER to data
link connector.
4. Turn ignition switch ON.
5. Touch “START”.
Te r m i n a l Wire
Color Item
Condition Voltage (V)
(Approx.)
21 G NATS antenna amp. Ignition switch (OFF → ON) Just after turning ignition switch
ON: Pointer of tester should move.
23 G/O Security indicator lamp Goes OFF
→ illuminates (Every 2.4
seconds) Battery voltage
→ 0
25 BR NATS antenna amp. Ignition switch (OFF → ON)Just after turning ignition switch
ON: Pointer of tester should move.
38 W/L Ignition switch (ON or START) Ignition switch (ON or START posi-
tion)Battery voltage
39 L CAN-H ——
40 P CAN-L ——
57 Y/R Battery power supply —Battery voltage
67 B Ground —0
70 W/B Battery power supply —Battery voltage
Program card: NATS (AEN04A-1) or later
BBIA0369E
PBR455D

BL-142
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)
Revision: November 20092006 QX56
6. Touch "OTHER".
7. Select “NATS V.5.0 ”.
If “NATS V5.0 ” is not indicated, go to GI-40, "
CONSULT-II Data
Link Connector (DLC) Circuit" .
8. Perform each diagnostic test mode according to each service procedure.
For further information, see the CONSULT-II Operation Manual
NATS-IVIS/NVIS.
CONSULT-II DIAGNOSTIC TEST MODE FUNCTION
NOTE:

When any initialization is performed, all IDs previously registered will be erased and all NATS ignition keys
must be registered again.

The engine cannot be started with an unregistered key. In this case, the system will show “DIFFERENCE
OF KEY ” or “LOCK MODE ” as a self-diagnostic result on the CONSULT-II screen.

In rare case, “CHAIN OF ECM-IMMU ” might be stored as a self-diagnostic result during key registration
procedure, even if the system is not malfunctioning.
LIIA0556E
SEL027X
SEL150X
CONSULT-II DIAGNOSTIC TEST
MODE Description
C/U INITIALIZATION When replacing any of the following components, C/U initialization and re-registration of all
NATS ignition keys are necessary.
[(NATS ignition key/ BCM/ ECM]
SELF-DIAG RESULTS Detected items (screen terms) are as shown in the chart.
Refer to
BL-143, "
IVIS (NATS) SELF-DIAGNOSTIC RESULTS ITEM CHART" .