2007 INFINITI QX56 battery

AUTOMATIC BACK DOOR SYSTEM
BL-105
< SERVICE INFORMATION >
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Cinch Latch Motor System InspectionINFOID:0000000003532976
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.CINCH LATCH MOTOR OPERATION INSPECTION
Connect battery power to terminals 1 and 2 on the back door latch
and check motor operation.
OK or NG
OK >> Cinch latch motor is OK.
NG >> Replace the back door latch.
11 - Ground
12 - Ground Battery voltage
LIIA2397E
1 - 12 : Continuity should exist.
2 - 11 : Continuity should exist.
LIIA0837E
1 (+) - 2 (-) : It operates.
1 (-) - 2 (+) : It operates. (Reverse rotation)
LIIA1937E

BL-124
< SERVICE INFORMATION >
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)
Self-diagnosis related item
*: When IVIS (NATS) detects a malfunction, the security indicator lights up while ignition key is in the “ON” position.
SYMPTOM MATRIX CHART 2
SymptomDisplayed “SELF-DIAG
RESULTS” on CON-
SULT-II screen.Diagnostic Procedure
(Reference page)System
(Malfunctioning part or
mode)Reference Part No. Of Il-
lustration On System Di-
agram
• Security indicator light-
ing up*
• Engine cannot be
startedCHAIN OF ECM-IMMU
[P1612]PROCEDURE 1
(BL-125
)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 be-
tween BCM and ECM
communication lineC4
ECM B
BCM A
DIFFERENCE OF KEY
[P1615]PROCEDURE 2
(BL-126
)Unregistered key D
BCM A
CHAIN OF IMMU-KEY
[P1614]PROCEDURE 5
(BL-129
)Malfunction of key ID
chipE5
Communication line be-
tween 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-127
)System initialization has
not yet been completed.F
ECM B
LOCK MODE
[P1610]PROCEDURE 4
(BL-128
)LOCK MODE D
Security indicator lighting
up*DON'T ERASE BEFORE
CHECKING ENG DIAGWORK FLOW
(BL-123
)Engine trouble data and
IVIS (NATS) trouble data
have been detected in
ECM—

BL-126
< SERVICE INFORMATION >
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)
OK or NG
OK >> GO TO 3.
NG >> Check the following:
• 50A fusible link (letter f , located in fuse and fusible
link box)
• Harness for open or short between fuse and BCM
connector. Ref. Part No. C1
3.CHECK IGN SW. ON SIGNAL
1. Turn ignition switch ON.
2. Check voltage between BCM connector M18 terminal 38 and ground.
OK or NG
OK >> GO TO 4.
NG >> Check the following:
• 10A fuse [No. 59, located in the fuse and relay box]
• Harness for open or short between fuse and BCM
connector. Ref. part No. C2
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-117, "
ECM Re-communicating Function".
Diagnosis Procedure 2INFOID:0000000003532996
Self-diagnostic results:
“DIFFERENCE OF KEY” displayed on CONSULT-II screen
1.CONFIRM SELF-DIAGNOSTIC RESULTS70 - Ground :Battery voltage
LIIA1279E
38 - Ground :Battery voltage
LIIA0527E
67 - Ground :Continuity should exist.
LIIA1040E

BL-130
< SERVICE INFORMATION >
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)
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”.
6.CHECK NATS ANTENNA AMP. SIGNAL LINE- 2
Check voltage between NATS antenna amp. connector M21 terminal
4 and ground with analog tester.1 - Ground :Battery voltage
LIIA1498E
LIIA1642E
Connector terminals
(wire colors)
Position of ignition key cylinderVoltage (V)
(Approx.)
( + ) ( - )
2GroundBefore inserting ignition key Battery voltage
After inserting ignition keyPointer of tester should move for approx. 30 seconds,
then return to battery voltage
Just after turning ignition switch
ONPointer of tester should move for approx. 1 second, then
return to battery voltage
LIIA1643E

IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)
BL-131
< SERVICE INFORMATION >
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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”.
Diagnosis Procedure 6INFOID:0000000003533000
“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.
Connector terminals
(wire colors)
Position of ignition key cylinderVoltage (V)
(Approx.)
( + ) ( - )
4GroundBefore inserting ignition key Battery voltage
After inserting ignition keyPointer of tester should move for approx. 30 seconds,
then return to battery voltage
Just after turning ignition switch
ONPointer of tester should move for approx. 1 second, then
return to battery voltage
3 - Ground :Continuity should exist.
LIIA1283E
Security indicator lamp should light up.

BL-132
< SERVICE INFORMATION >
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)
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 Man-
ual NATS-IVIS/NVIS”.
NG >> Check the following:
• Harness for open or short between security indicator lamp and BCM (NATS control unit).
• Indicator lamp condition
How to Replace NATS Antenna AmpINFOID:0000000003533001
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.8 - Ground :Battery voltage
LIIA1072E
23 - Ground :Battery voltage
LIIA0523E
SIIA1683E

BL-134
< SERVICE INFORMATION >
HOMELINK UNIVERSAL TRANSCEIVER
Before conducting the procedure given below, make sure that system receiver (garage door opener, etc.)
operates with original, hand-held transmitter. If NG, receiver or hand-held transmitter is malfunctioning, not
vehicle related.
1.ILLUMINATE CHECK
• Turn ignition switch OFF.
• Does amber light (LED) of transmitter illuminate when any button
is pressed?
YES or NO
YES >> GO TO 2.
NO >> GO TO 3.
2.TRANSMITTER CHECK
Check transmitter with Tool.*
*For details, refer to Technical Service Bulletin.
OK or NG
OK >> Receiver or hand-held transmitter malfunction, not vehicle related.
NG >> Replace transmitter.
3.POWER SUPPLY CHECK
1. Disconnect transmitter.
2. Check voltage between Homelink® universal transceiver connector R106 terminal 1 and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace fuse or harness.
4.GROUND CIRCUIT CHECK
Check continuity between Homelink® universal transceiver connector R106 terminal 2 and body ground.
OK or NG
OK >> Replace compass and thermometer assembly.
NG >> Repair or replace harness.
LIIA1466E
1 - Ground : Battery voltage
LIIA1467E
2 - Ground : Continuity should exist.
LIIA2039E

BODY REPAIR
BL-137
< SERVICE INFORMATION >
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Body Component PartsINFOID:0000000003533006
UNDERBODY COMPONENT PARTS
1. Hoodledge assembly (RH, LH)
2. Hoodledge reinforcement (RH, LH)
3. Body mounting bracket (RH, LH)
4. Hoodledge front brace (RH), Battery mounting bracket (LH)
LIIA0908E