ignition INFINITI QX56 2004 Factory Service Manual

REMOTE KEYLESS ENTRY SYSTEM
BL-55
C
D
E
F
G
H
J
K
L
MA
B
BL
Revision: August 20072004 QX56
CONSULT-II Function (BCM)EIS002RV
CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.
CONSULT-II Inspection ProcedureEIS002RW
CONSULT-II can display each diagnostic item using the following diagnostic test modes: work support, data
monitor, active test, and CAN diagnostic support monitor through data reception and command transmission
via the BCM communication line.
“MULTI REMOTE ENT”
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)".
BCM
diagnostic test itemDiagnostic mode Description
Inspection by partWORK SUPPORTSupports inspections and adjustments. Commands are transmitted to the
BCM for setting the status suitable for required operation, input/output sig-
nals are received from the BCM and received date is displayed.
DATA MONITOR Displays BCM input/output data in real time.
ACTIVE TESTOperation of electrical loads can be checked by sending drive signal to
them.
SELF-DIAG RESULTS Displays BCM self-diagnosis results.
CAN DIAG SUPPORT MNTRThe result of transmit/receive diagnosis of CAN communication can be
read.
ECU PART NUMBER BCM part number can be read.
CONFIGURATION Performs BCM configuration read/write functions.
BBIA0369E
BCIA0029E

BL-56
REMOTE KEYLESS ENTRY SYSTEM
Revision: August 20072004 QX56
5. Touch “BCM”.
If "BCM" is not indicated, refer to GI-39, "
CONSULT-II Data Link
Connector (DLC) Circuit" .
6. Touch “MULTI REMOTE ENT”.
7. Select diagnosis mode.
“DATA MONITOR”, “ACTIVE TEST” and “WORK SUPPORT”
are available.
CONSULT-II Application ItemsEIS002RX
“MULTI REMOTE ENT”
Data Monitor
BCIA0030E
LIIA0194E
BCIA0031E
Monitored Item Description
DOOR SW-AS Indicates [ON/OFF] condition of front door switch RH.
DOOR SW-RR Indicates [ON/OFF] condition of rear door switch RH.
DOOR SW-RL Indicates [ON/OFF] condition of rear door switch LH.
DOOR SW-DR Indicates [ON/OFF] condition of front door switch LH.
BACK DOOR SW Indicates [ON/OFF] condition of back door latch.
KEY ON SW Indicates [ON/OFF] condition of key switch.
ACC ON SW Indicates [ON/OFF] condition of ignition switch in ACC position.
IGN ON SW Indicates [ON/OFF] condition of ignition switch in ON position.
KEYLESS PANIC Indicates [ON/OFF] condition of panic signal from keyfob.
KEYLESS UNLOCK Indicates [ON/OFF] condition of unlock signal from keyfob.
KEYLESS LOCK Indicates [ON/OFF] condition of lock signal from keyfob.
KEY CYL LK-SW Indicates [ON/OFF] condition of lock signal from door key cylinder switch.
KEY CYL UN-SW Indicates [ON/OFF] condition of unlock signal from door key cylinder switch.
KEYLESS PBD Indicates [ON/OFF] condition of power back door signal from keyfob.

REMOTE KEYLESS ENTRY SYSTEM
BL-59
C
D
E
F
G
H
J
K
L
MA
B
BL
Revision: August 20072004 QX56
Trouble Diagnosis ProcedureEIS002RY
1. Check the symptom and customer's requests.
2. Understand outline of system. Refer to BL-45, "
System Description" .
3. Confirm system operation.

Check that the power door lock system operates normally. Refer to BL-16, "POWER DOOR LOCK
SYSTEM" .

Check that the automatic back door system operates normally. Refer to BL-101, "AUTOMATIC BACK
DOOR SYSTEM" .
4. Perform pre-diagnosis inspection. Refer to BL-59, "
BCM Power Supply and Ground Circuit Check" .
5. Refer to trouble diagnosis chart by symptom, repair or replace any malfunctioning parts. Refer to BL-60,
"Trouble Diagnoses" .
6. Inspection End.
BCM Power Supply and Ground Circuit CheckEIS003EF
1. CHECK FUSES AND FUSIBLE LINK
Check the following BCM fuses and fusible link.
NOTE:
Refer to BL-44, "
Component Parts and Harness Connector Location" .
OK or NG
OK >> GO TO 2.
NG >> If fuse is blown, be sure to eliminate cause of problem before installing new fuse, refer to PG-4,
"POWER SUPPLY ROUTING CIRCUIT" .
2. CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM.
3. Check voltage between BCM connectors M18, M20 terminals
11, 38, 57, 70 and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.
Component Parts Terminal No. (SIGNAL) Ampere No. Location
BCM57 (BAT power supply) 15A 22 Fuse block (J/B)
70 (BAT power supply) 50AfFuse and fusible link box
11 (ACC power supply) 10A 4 Fuse block (J/B)
38 (IGN power supply) 10A 59 Fuse and relay box
ConnectorTerminals
(Wire color)
Signal nameIgnition
switchVo l ta g e
(+) (–)
M2070 (W/B)
GroundBattery power
supplyOFFBattery
voltage
57 (Y/R)Battery power
supplyOFFBattery
voltage
M1811 ( O )ACC power
supplyACCBattery
voltage
38 (W/L)IGN power
supplyONBattery
voltage
WIIA0600E

BL-60
REMOTE KEYLESS ENTRY SYSTEM
Revision: August 20072004 QX56
3. CHECK GROUND CIRCUIT
Check continuity between BCM connector M20 terminal 67 and
ground.
OK or NG
OK >> Power supply and ground circuit is OK.
NG >> Repair or replace harness.
Trouble DiagnosesEIS002S0
SYMPTOM CHART
NOTE:

Always check the "Trouble Diagnosis Procedure" before troubleshooting. Refer to BL-59, "Trouble Diag-
nosis Procedure" .

Always check keyfob battery before replacing keyfob. Refer to BL-65, "Keyfob Battery and Function
Check" .

The panic alarm operation and power back door opener operation of remote keyless entry system do not
activate with the ignition key inserted in the ignition key cylinder.

Use Remote Keyless Entry Tester J-43241 (follow instructions on tester) to check operation of keyfob
before replacing keyfob.
ConnectorTe r m i n a l s
(Wire color)
Continuity
(+) (-)
M20 67 (B) Ground Yes
LIIA1040E
Symptom Diagnoses/service procedureReference
page
All functions of remote keyless entry system do not
operate.1. Keyfob battery and function check (use Remote Keyless Entry
Tester J-43241)
NOTE:
If the result of keyfob function check is OK, keyfob is not malfunc-
tioning.BL-65
2. Check BCM and keyless receiver.BL-66
The new ID of keyfob cannot be entered.1. Keyfob battery and function check (use Remote Keyless Entry
Tester J-43241)
NOTE:
If the result of keyfob function check is OK, keyfob is not malfunc-
tioning.BL-652. Key switch and key lock solenoid (insert) checkBL-62
3. Door switch checkBL-63
4. ACC power checkBL-68
5. Replace BCM.BCS-19
Door lock or unlock does not function.
(If the power door lock system does not operate
manually, check power door lock system. Refer to
BL-16, "
POWER DOOR LOCK SYSTEM" )1. Keyfob battery and function check (use Remote Keyless Entry
Tester J-43241)
NOTE:
If the result of keyfob function check is OK, keyfob is not malfunc-
tioning.BL-65
2. Replace BCM.BCS-19
Hazard and horn reminder does not activate prop-
erly when pressing lock or unlock button of keyfob.1. Check hazard and horn reminder mode with CONSULT-II
NOTE:
Hazard and horn reminder mode can be changed.
First check the hazard and horn reminder mode setting.BL-57
2. Door switch checkBL-63
3. Replace BCM.BCS-19

REMOTE KEYLESS ENTRY SYSTEM
BL-61
C
D
E
F
G
H
J
K
L
MA
B
BL
Revision: August 20072004 QX56
Hazard reminder does not activate properly when
pressing lock or unlock button of keyfob.
(Horn reminder OK)1. Check hazard reminder mode with CONSULT-II
NOTE:
Hazard reminder mode can be changed.
First check the hazard reminder mode setting.BL-57
2. Check hazard function with hazard switch —
3. Replace BCM.BCS-19
Horn reminder does not activate properly when
pressing lock or unlock button of keyfob.
(Hazard reminder OK)1. Check horn reminder mode with CONSULT-II
NOTE:
Horn reminder mode can be changed.
First check the horn reminder mode setting.BL-57
2. Check horn function with horn switch —
3. IPDM E/R operation checkBL-68
4. Replace BCM.BCS-19
Back door open/close operation is not carried out
with keyfob operation.
(The automatic back door system is normal.)1. Keyfob battery and function check (use Remote Keyless Entry
Tester J-43241)BL-652. Key switch (insert) checkBL-62
3. Check that glass hatch is closed —
4. Remote keyless entry receiver systemBL-68
5. Replace BCM.BCS-19
Room lamp, ignition keyhole illumination and step
lamp operation do not activate properly.1. Room lamp operation checkBL-70
2. Ignition kehole illumination operation checkBL-70
3.Step lamp operation checkLT- 1 3 0
4. Door switch checkBL-63
5. Replace BCM.BCS-19
Panic alarm (horn and headlamp) does not activate
when panic alarm button is continuously pressed.1. Keyfob battery and function check (use Remote Keyless Entry
Tester J-43241)
NOTE:
If the result of keyfob function check is OK, keyfob is not malfunc-
tioning.BL-65
2. Key switch and key lock solenoid (insert) checkBL-62
3. Replace BCM.BCS-19
Auto door lock operation does not activate properly.
(All other remote keyless entry functions OK.)1. Check auto door lock operation mode with CONSULT-II
NOTE:
Auto door lock operation mode can be changed.
First check the auto door lock operation mode setting.BL-57
2. Replace BCM.BCS-19
Keyless power window down (open) operation does
not activate properly.
(All other remote keyless entry functions OK.)1. Check power window down operation mode with CONSULT-II
NOTE:
Power window down operation mode can be changed.
First check the power window down operation mode setting.BL-57
2. Check power window function with switch —
3. Replace BCM.BCS-19
Symptom Diagnoses/service procedureReference
page

BL-62
REMOTE KEYLESS ENTRY SYSTEM
Revision: August 20072004 QX56
Key Switch (Insert) CheckEIS002S1
1. CHECK KEY SWITCH INPUT SIGNAL
With CONSULT-II
Check key switch "KEY ON SW" in DATA MONITOR mode with CONSULT–II. Refer to BL-27, "
DATA MONI-
TOR" .

When key is inserted to ignition key cylinder:

When key is removed from ignition key cylinder:
Without CONSULT-II
Check voltage between BCM connector M18 terminal 37 and
ground.
OK or NG
OK >> Key switch (insert) circuit is OK.
NG >> GO TO 2.
2. CHECK KEY SWITCH (INSERT)
1. Turn ignition switch OFF.
2. Disconnect key switch and key lock solenoid.
3. Check continuity between key switch terminals 3, 4.
OK or NG
OK >> Repair or replace harness.
NG >> Replace key switch.KEY ON SW : ON
KEY ON SW : OFF
LIIA0169E
ConnectorTerminal
(Wire color)
Condition Voltage (V)
( + ) ( – )
M18 37 (B/R) GroundKey is inserted. Battery voltage
Key is removed. 0
LIIA0567E
Terminals Condition Continuity
3 – 4Key is inserted. Yes
Key is removed. No
LIIA1044E

BL-64
REMOTE KEYLESS ENTRY SYSTEM
Revision: August 20072004 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 (R/L) - 12 (R/L) : Continuity should exist.
2 (GR) - 13 (GR) : Continuity should exist.
2 (SB) - 47 (SB) : Continuity should exist.
2 (R/Y) - 48 (R/Y) : Continuity should exist.
7 (R/W) - 43 (R/B) : Continuity should exist.
2 (SB, R/L, R/Y or GR) - Ground : Continuity should not
exist.
7 (R/W) - 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

BL-68
REMOTE KEYLESS ENTRY SYSTEM
Revision: August 20072004 QX56
ACC Power CheckEIS002S5
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 CheckEIS002S6
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
(Wire color)
ConditionVoltage (V)
(Approx.)
( + ) ( – )
M18 11 (O) GroundACC Battery voltage
OFF 0
PIIA7002E
ConnectorTe r m i n a l
(Wire color)Voltage (V)
(Approx.)
( + ) ( – )
E122 45 (G/W) Ground Battery voltage
LIIA1053E

REMOTE KEYLESS ENTRY SYSTEM
BL-69
C
D
E
F
G
H
J
K
L
MA
B
BL
Revision: August 20072004 QX56
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 (G/W) - 1 (R/W) : Continuity should exist.
45 (G/W) - ground : Continuity should not exist.WIIA0679E

BL-70
REMOTE KEYLESS ENTRY SYSTEM
Revision: August 20072004 QX56
Check Hazard FunctionEIS002S7
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 FunctionEIS002S8
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-56, "
HORN" .
Check Headlamp FunctionEIS002S9
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 FunctionEIS002SA
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 >> Map lamp illumination circuit is OK.
NG >> Check map lamp illumination circuit. Refer to LT- 1 5 2 , "
ILLUMINATION" . Map lamp and ignition keyhole illumination should illuminate.