2005 INFINITI QX4 battery

AUTOMATIC BACK DOOR SYSTEM
BL-117
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Revision: October 20052005 QX56
5. POWER LIFTGATE SWITCH GROUND INSPECTION
Check continuity between power liftgate switch connector terminal 2
and ground.
OK or NG
OK >> Replace the power liftgate switch.
NG >> Repair or replace harness.
GLASS HATCH AJAR SWITCH CHECK
1. CHECK GLASS HATCH AJAR SWITCH INPUT SIGNAL
With CONSULT-II
Check glass hatch ajar switch ("TRNK OPN MNTR") in DATA MONITOR mode with CONSULT–II. Refer to
BL-27, "
DATA MONITOR" .

When glass hatch is open:

When glass hatch is closed:
Without CONSULT-II
Check voltage between BCM connector M19 terminal 42 and ground.
OK or NG
OK >> System is OK.
NG >> GO TO 2.2 - Ground : Continuity should exist.
LIIA1065E
TRNK OPN MNTR : ON
TRNK OPN MNTR : OFF
WIIA0108E
Connector ItemTe r m i n a l s
ConditionVoltage (V)
(Approx.)
(+) (–)
M19 BCM 42 GroundOpen
↓
Closed0
↓
Battery voltage
LIIA1149E

AUTOMATIC BACK DOOR SYSTEM
BL-119
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Revision: October 20052005 QX56
2. BACK DOOR CLOSE SWITCH SIGNAL INSPECTION
1. Turn ignition switch OFF.
2. While operating the back door close switch, check voltage
between back door control unit connector B55 terminal 8 and
ground.
OK or NG
OK >> Back door close switch is OK.
NG >> GO TO 3.
3. BACK DOOR CLOSE SWITCH CIRCUIT INSPECTION
1. Disconnect back door close switch and back door control unit connector.
2. Check continuity between back door close switch connector B63
terminal 1 and back door control unit connector B55 terminal 8.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace harness.
4. BACK DOOR CLOSE SWITCH GROUND INSPECTION
Check continuity between back door close switch connector B63 ter-
minal 3 and ground.
OK or NG
OK >> Replace the back door close switch.
NG >> Repair or replace harness.
Back Door Close (Cancel) Switch System InspectionEIS0 08 RF
1. BACK DOOR CLOSE SWITCH FUNCTION INSPECTION
Check back door close (cancel) switch using switch operation.
OK or NG
OK >> Back door close switch is OK.
NG >> GO TO 2.
Te r m i n a l s
ConditionVoltage (V)
(Approx.)
(+) (-)
8 GroundBack door
close switchON 0
OFF Battery voltage
LIIA0805E
1 - 8 : Continuity should exist.
LIIA1066E
3 - Ground : Continuity should exist.
WIIA0602E

AUTOMATIC BACK DOOR SYSTEM
BL-125
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Revision: October 20052005 QX56
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 InspectionEIS008RL
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 GroundBack door handle switch (ON) 0
Other (OFF) Battery voltage
LIIA0833E

BL-126
AUTOMATIC BACK DOOR SYSTEM
Revision: October 20052005 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 InspectionEIS008RM
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

AUTOMATIC BACK DOOR SYSTEM
BL-127
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Revision: October 20052005 QX56
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.1 (+) - 2 (-) : It operates.
1 (-) - 2 (+) : It operates. (Reverse rotation)
LIIA1937E

IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)
BL-141
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Revision: October 20052005 QX56
Terminals and Reference Value for BCMEIS008S1
CONSULT-IIEIS008S2
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
ColorItem ConditionVoltage (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 lampGoes 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
PBR4 55 D

IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)
BL-145
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Revision: October 20052005 QX56
Trouble DiagnosesEIS008S4
SYMPTOM MATRIX CHART 1
Self-diagnosis related item
*: When IVIS (NATS) detects a malfunction, 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-147
)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-148
)Unregistered key D
BCM A
CHAIN OF IMMU-KEY
[P1614]PROCEDURE 5
(BL-151
)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-149
)System initialization has
not yet been completed.F
ECM B
LOCK MODE
[P1610]PROCEDURE 4
(BL-150
)LOCK MODE D
Security indicator light-
ing up*DON'T ERASE
BEFORE CHECKING
ENG DIAGWORK FLOW
(BL-144
)Engine trouble data and
IVIS (NATS) trouble data
have been detected in
ECM—

IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)
BL-147
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Revision: October 20052005 QX56
Diagnostic Procedure 1EIS008S5
Self-diagnostic results:
“CHAIN OF ECM-IMMU” displayed on CONSULT-II screen
First perform the “SELF-DIAG RESULTS” in “BCM” with CONSULT-II, then perform the trouble diagno-
sis of malfunction system indicated “SELF-DIAG RESULTS” of “BCM”. Refer to BL-141, "
CONSULT-II"
.
1. CONFIRM SELF-DIAGNOSTIC RESULTS
Confirm SELF-DIAGNOSTIC RESULTS “CHAIN OF ECM-IMMU”
displayed on CONSULT-II 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-145, "
SYMPTOM MATRIX CHART 1" .
2. CHECK POWER SUPPLY CIRCUIT FOR BCM
1. Turn ignition switch OFF.
2. Disconnect BCM.
3. Check voltage between BCM connector M20 terminal 70 and ground.
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
PIIA1260E
70 - Ground :Battery voltage
LIIA1279E
38 - Ground :Battery voltage
LIIA0527E