INFINITI QX4 2005 Factory Service Manual

BL-64
REMOTE KEYLESS ENTRY SYSTEM
Revision: October 20052005 QX56
2. CHECK DOOR SWITCH CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect door switch and BCM.
3. Check continuity between door switch connector (B) B8 (front LH), B108 (front RH), B18 (rear LH), B116
(rear RH) terminal 2 or back door latch connector (C) D503 terminal 7 and BCM connectors (A) M18, M19
terminals 12, 13, 43, 47 and 48.
4. Check continuity between door switch connector (B) B8 (front
LH), B108 (front RH), B18 (rear LH), B116 (rear RH) terminal 2
or back door latch connector (C) D503 terminal 7 and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.
3. CHECK DOOR SWITCHES
FRONT AND REAR DOORS
Check continuity between front or rear door switch terminal 2 and
exposed metal of switch while pressing and releasing switch.
BACK DOOR
Check continuity between back door latch connector (A) D503 termi-
nals 7 and 8 while pressing (closing back door) and releasing (open-
ing back door) switch.
OK or NG
OK >> (Front and rear doors) Switch circuit is OK.
OK >> (Back door) GO TO 4.
NG >> Replace door switch.2 - 12 : Continuity should exist.
2 - 13 : Continuity should exist.
2 - 47 : Continuity should exist.
2 - 48 : Continuity should exist.
7 - 43 : Continuity should exist.
2 - Ground : Continuity should not exist.
7 - Ground : Continuity should not exist.
WIIA0750E
Door switch is released : Continuity should exist.
Door switch is pushed : Continuity should not exist.
WIIA0644E
When back door is open : Continuity should exist.
When back door is closed : Continuity should not exist.
WIIA0752E

REMOTE KEYLESS ENTRY SYSTEM
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4. CHECK BACK DOOR SWITCH GROUND
Check continuity between back door latch connector terminal 8 and
ground.
OK or NG
OK >> Back door switch circuit is OK.
NG >> Repair or replace harness.
Keyfob Battery and Function CheckEIS008QB
1. CHECK KEYFOB BATTERY
Remove battery and measure voltage across battery positive and negative terminals, (+) and (−).
NOTE:
Keyfob does not function if battery is not set correctly.
OK or NG
OK >> GO TO 2.
NG >> Replace battery.8 - Ground : Continuity should exist.
LIIA0828E
Voltage : 2.5V - 3.0V
SEL237W

BL-66
REMOTE KEYLESS ENTRY SYSTEM
Revision: October 20052005 QX56
2. CHECK KEYFOB FUNCTION
With CONSULT-II
Check keyfob function in “DATA MONITOR” mode with CONSULT-II.
When pushing each button of keyfob, the corresponding monitor item should
be turned as follows.
Without CONSULT-II
Check keyfob function using Remote Keyless Entry Tester J-43241.
OK or NG
OK >> WITH CONSULT-II: Keyfob, remote keyless entry receiver and wiring harness between BCM and
remote keyless entry receiver are OK. Replace BCM. Refer to BCS-20, "
Removal and Installation
of BCM" .
OK >> WITHOUT CONSULT-II: Keyfob is OK. Further inspection is necessary. Refer to BL-60, "
SYMP-
TOM CHART" .
NG >> WITH CONSULT-II: Further inspection is necessary. Refer to BL-60, "
SYMPTOM CHART" .
NG >> WITHOUT CONSULT-II: Replace keyfob. Refer to BL-71, "
ID Code Entry Procedure" .
Remote Keyless Entry Receiver System CheckEIS008QC
1. REMOTE KEYLESS ENTRY RECEIVER SIGNAL
Check signal voltage waveform between BCM connector M18 termi-
nal 20 and ground using an oscilloscope.
OK or NG
OK >> Remote keyless entry receiver signal power supply, ground and signal circuits are OK. Replace
BCM. Refer to BCS-20, "
Removal and Installation of BCM" .
NG >> GO TO 2.Condition Monitor item
Pushing LOCK KEYLESS LOCK : ON
Pushing UNLOCK KEYLESS UNLOCK : ON
Keep pushing UNLOCKRKE KEEP UNLK
turns to ON 3 seconds
after UNLOCK button
is pushed.
Pushing PANIC KEYLESS PANIC : ON
Pushing LOCK and UNLOCK
at the same timeRKE LCK-UNLCK : ON
Pushing Power Back Door KEYLESS PBD : ON
LIIA1487E
Condition:
Keyfob buttons released : Refer to BL-53, "
Te r m i -
nals and Reference Value
for BCM" .
Keyfob buttons pressed : Refer to BL-53, "
Te r m i -
nals and Reference Value
for BCM" .LIIA1275E

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2. REMOTE KEYLESS ENTRY RECEIVER POWER SUPPLY INSPECTION
Check signal voltage waveform between BCM connector M18 termi-
nal 19 and ground using an oscilloscope.
OK or NG
OK >> GO TO 3.
NG >> Replace BCM. Refer to BCS-20, "
Removal and Installa-
tion of BCM" .
3. REMOTE KEYLESS ENTRY RECEIVER GROUND CIRCUIT INSPECTION (BCM)
Check continuity between BCM connector M18 terminal 18 and
ground.
OK or NG
OK >> GO TO 4.
NG >> Replace BCM. Refer to BCS-20, "
Removal and Installa-
tion of BCM" .
4. HARNESS INSPECTION BETWEEN BCM AND REMOTE KEYLESS ENTRY RECEIVER
1. Disconnect remote keyless entry receiver and BCM connectors.
2. Check continuity between remote keyless entry receiver con-
nector M120 terminals 1, 2, 4 and BCM connector M18 termi-
nals 18, 19, 20.
3. Check continuity between remote keyless entry receiver termi-
nals 1, 2 and 4 and ground.
OK or NG
OK >> Replace remote keyless entry receiver.
NG >> Repair or replace harness.19 - Ground : Refer to BL-53, "
Te r m i -
nals and Reference Value
for BCM" .
WIIA0433E
18 - Ground : Continuity should exist.
WIIA0434E
1 - 18 : Continuity should exist.
2 - 20 : Continuity should exist.
4 - 19 : Continuity should exist.
1 - Ground : Continuity should not exist.
2 - Ground : Continuity should not exist.
4 - Ground : Continuity should not exist.
WIIA0308E

BL-68
REMOTE KEYLESS ENTRY SYSTEM
Revision: October 20052005 QX56
ACC Power CheckEIS008QD
1. CHECK ACC POWER
With CONSULT-II
Check "ACC ON SW" in DATA MONITOR mode with CONSULT–II. Refer to BL-27, "
DATA MONITOR" .
Without CONSULT-II
Check voltage between BCM connector M18 terminal 11 and
ground.
OK or NG
OK >> ACC power circuit is OK.
NG >> Check the following:

10A fuse [No. 4, located in fuse block (J/B)]

Harness for open or short.
IPDM E/R Operation CheckEIS008QE
1. CHECK IPDM E/R INPUT VOLTAGE
Check voltage between IPDM E/R connector E122 terminal 45 and
ground.
OK or NG
OK >> Replace IPDM E/R.
NG >> GO TO 2.
Monitor Item Condition
ACC ON SWIgnition switch position ACC : ON
Ignition switch position OFF : OFF
PIIA3367E
ConnectorTe r m i n a l s
ConditionVoltage (V)
(Approx.)
(+) (–)
M18 11 GroundACC Battery voltage
OFF 0
PIIA7002E
ConnectorTe r m i n a l s
Voltage (V)
(Approx.)
(+) (–)
E122 45 Ground Battery voltage
LIIA1053E

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2. CHECK IPDM E/R INPUT VOLTAGE
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R and horn relay.
3. Check continuity between IPDM E/R connector E122 terminal
45 and horn relay connector H-1 terminal 1.
4. Check continuity between IPDM E/R connector E122 terminal
45 and ground.
OK or NG
OK >> Further inspection is necessary. Refer to BL-60, "SYMP-
TOM CHART" .
NG >> Repair or replace harness45 - 1 : Continuity should exist.
45 - Ground : Continuity should not exist.WIIA0679E

BL-70
REMOTE KEYLESS ENTRY SYSTEM
Revision: October 20052005 QX56
Check Hazard FunctionEIS008QF
1. CHECK HAZARD WARNING LAMP
Does hazard indicator flash with hazard switch?
Ye s o r N o
Yes >> Hazard warning lamp circuit is OK.
No >> Check hazard indicator. Refer to LT- 8 0 , "
TURN SIGNAL AND HAZARD WARNING LAMPS" .
Check Horn FunctionEIS008QG
First, perform the "SELF-DIAG RESULTS" in "BCM" with CONSULT-II, then perform the trouble diagnosis of
malfunction system indicated in "SELF-DIAG RESULTS" of "BCM".
1. CHECK HORN FUNCTION
Does horn sound with horn switch?
Ye s o r N o
Yes >> Horn circuit is OK.
No >> Check horn circuit. Refer to WW-58, "
HORN" .
Check Headlamp FunctionEIS008QH
First, perform the "SELF-DIAG RESULTS" in "BCM" with CONSULT-II, then perform the trouble diagnosis of
malfunction system indicated in "SELF-DIAG RESULTS" of "BCM".
1. CHECK HEADLAMP OPERATION
Does headlamp come on when turning lighting switch ON?
Ye s o r N o
Yes >> Headlamp operation circuit is OK.
No >> Check headlamp circuit. Refer to LT- 6 , "
HEADLAMP (FOR USA)" .
Check Map Lamp Illumination FunctionEIS008QI
1. CHECK MAP LAMP ILLUMINATION FUNCTION
When map lamp switch is in DOOR position, open the front door LH or RH.
OK or NG
OK >> System is OK.
NG >> Check map lamp illumination circuit. Refer to LT- 1 5 2 , "
ILLUMINATION" . Map lamp and ignition keyhole illumination should illuminate.

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ID Code Entry ProcedureEIS008QJ
KEYFOB ID SET UP WITH CONSULT-II
NOTE:

If a keyfob is lost, the ID code of the lost keyfob must be erased to prevent unauthorized use. A
specific ID code can be erased with CONSULT-II. However, when the ID code of a lost keyfob is not
known, all controller ID codes should be erased. After all ID codes are erased, the ID codes of all
remaining and/or new keyfobs must be re-registered.

When registering an additional keyfob, the existing ID codes in memory may or may not be erased.
If five ID codes are stored in memory when an additional code is registered, only the oldest code is
erased. If less than five codes are stored in memory when an additional code is registered, the
new ID code is added and no ID codes are erased.

Entry of a maximum of five ID codes is allowed. When more than five codes are entered, the oldest
ID code will be erased.

Even if the same ID code that is already in memory is input, the same ID code can be entered. The
code is counted as an additional code.
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. Connect CONSULT-II and CONSULT-II CONVERTER to the
data link connector.
3. Turn ignition switch ON.
4. Touch “START (NISSAN BASED VHCL)”.
5. Touch “BCM”.
If "BCM" is not indicated, refer to GI-39, "
CONSULT-II Data Link
Connector (DLC) Circuit" .
BBIA0336E
BCIA0029E
BCIA0030E

BL-72
REMOTE KEYLESS ENTRY SYSTEM
Revision: October 20052005 QX56
6. Touch “MULTI REMOTE ENT”.
7. Touch “WORK SUPPORT”.
8. The items are shown on the figure can be set up.

“REMO CONT ID REGIST”
Use this mode to register a keyfob ID code.
NOTE:
Register the ID code when keyfob or BCM is replaced, or
when additional keyfob is required.

“REMO CONT ID ERASUR”
Use this mode to erase a keyfob ID code.

“REMO CONT ID CONFIR”
Use this mode to confirm if a keyfob ID code is registered or
not.
LIIA0194E
BCIA0031E
LIIA1147E

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KEYFOB ID SET UP WITHOUT CONSULT-II
LIIA1670E