2004 INFINITI QX56 ECU

VEHICLE SECURITY (THEFT WARNING) SYSTEM
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Revision: August 20072004 QX56
CONSULT-II APPLICATION ITEM
Data Monitor
Active Test
Work Support
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.
TRNK OPEN MNTR Indicates [ON/OFF] condition of glass hatch ajar 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 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 unlock signal from door key cylinder switch.
CDL UNLOCK SW Indicates [ON/OFF] condition of unlock signal from lock/unlock switch.
CDL LOCK SW Indicates [ON/OFF] condition of lock signal from lock/unlock switch.
HOOD SW Indicates [ON/OFF] condition of hood switch.
Test Item Description
THEFT INDThis test is able to check security indicator lamp operation. The lamp will be turned on when “ON”
on CONSULT-II screen is touched.
HEADLAMP (HI)This test is able to check vehicle security lamp operation. The highbeam headlamps will be acti-
vated for 0.5 seconds after “ON” on CONSULT-II screen is touched.
VEHICLE SECURITY HORNThis test is able to check vehicle security horn operation. The horns will be activated for 0.5 sec-
onds after “ON” on CONSULT-II screen is touched.
Test Item Description
SECURITY ALARM SET This mode can confirm and change security alarm ON-OFF setting.
THEFT ALM TRGThe switch which triggered vehicle security alarm is recorded. This mode is able to confirm and
erase the record of vehicle security alarm. The trigger data can be erased by touching “CLEAR”
on CONSULT-II screen.

BL-90
VEHICLE SECURITY (THEFT WARNING) SYSTEM
Revision: August 20072004 QX56
Trouble DiagnosisEIS002SL
WORK FLOW

“POWER DOOR LOCK SYSTEM” Diagnosis refer to BL-16, "POWER DOOR LOCK SYSTEM" .

“REMOTE CONTROL SYSTEM” Diagnosis refer to BL-44, "REMOTE KEYLESS ENTRY SYSTEM" .
WIIA0599E

VEHICLE SECURITY (THEFT WARNING) SYSTEM
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Revision: August 20072004 QX56
Preliminary CheckEIS002SM
The system operation is canceled by turning ignition switch to ACC at any step between START and ARMED
in the following flow chart.
After performing preliminary check, go to symptom chart.
WIIA0627E

BL-92
VEHICLE SECURITY (THEFT WARNING) SYSTEM
Revision: August 20072004 QX56
Symptom ChartEIS002SN
*1: Make sure the system is in the armed phase.PROCEDURE
Diagnostic procedure
SYMPTOM
1Vehicle security
system cannot be
set by ····Door switch Refer to BL-93, "
Door Switch Check" .
Lock/unlock switch Refer to BL-100, "
Door Lock/Unlock Switch Check" .
Door outside keyRefer to BL-98, "
Front Door Lock Assembly LH (Key Cylinder Switch)
Check" .
BCM If the above systems are “OK”, replace BCM.
Security indicator does not turn “ON”.Refer to BL-97, "
Combination Meter (Security Indicator Lamp) Check" .
If the above systems are “OK”, replace BCM.
2*1 Vehicle secu-
rity system does
not alarm when
····Any door, hood or glass hatch
is opened.Refer to BL-93, "
Door Switch Check" .
Refer to BL-95, "
Hood Switch Check" .
If the above systems are “OK”, replace BCM.
3Vehicle security
alarm does not
activate.Horn alarmRefer to BL-100, "
Vehicle Security Horn Alarm Check" .
If the above systems are “OK”, check horn system.
Refer to WW-56, "
HORN" .
Headlamp alarmRefer to BL-100, "
Vehicle Security Headlamp Alarm Check" .
If the above systems are “OK”, replace BCM.
4Vehicle security
system cannot be
canceled by ····Door outside keyRefer to BL-98, "
Front Door Lock Assembly LH (Key Cylinder Switch)
Check" .
If the above systems are “OK”, check main power window and door lock/
unlock switch.
KeyfobCheck remote keyless entry function. Refer toBL-65, "
Keyfob Battery and
Function Check"
If the above systems are “OK”, replace BCM.

VEHICLE SECURITY (THEFT WARNING) SYSTEM
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Revision: August 20072004 QX56
Door Switch CheckEIS003ES
1. CHECK DOOR SWITCHES INPUT SIGNAL
With CONSULT-II
Check door switches ("DOOR SW-DR", "DOOR SW-AS", "DOOR SW-RL", "DOOR SW-RR", "BACK DOOR
SW", "TRNK OPN MNTR") in DATA MONITOR mode with CONSULT–II.Refer to BL-27, "
DATA MONITOR" .

When doors are open:

When doors are closed:
Without CONSULT-II
Check voltage between BCM connector M18 or M19 terminals 12,
13, 42, 43, 47, 48 and ground.
OK or NG
OK >> Door switch circuit is OK.
NG >> GO TO 2.DOOR SW-DR : ON
DOOR SW-AS : ON
DOOR SW-RL : ON
DOOR SW-RR : ON
BACK DOOR SW : ON
TRNK OPN MNTR : ON
DOOR SW-DR : OFF
DOOR SW-AS : OFF
DOOR SW-RL : OFF
DOOR SW-RR : OFF
BACK DOOR SW : OFF
TRNK OPN MNTR : OFF
WIIA0466E
Connector ItemTerminals (Wire color)
ConditionVoltage (V)
(Approx.)
( + ) ( – )
M19Glass hatch
ajar switch42 (GR)
GroundOpen
↓
Closed0
↓
Battery voltage Back door
latch (door
ajar switch)43 (R/B)
Front door
switch LH47 (SB)
Rear door
switch LH48 (R/Y)
M18Front door
switch RH12 (R/L)
Rear door
switch RH13 (GR)
LIIA1451E

BL-94
VEHICLE SECURITY (THEFT WARNING) SYSTEM
Revision: August 20072004 QX56
2. CHECK DOOR SWITCH CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect door or hatch 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 or glass hatch ajar switch connector
(D) D707 terminal + and BCM connectors (A) M18, M19 terminals 12, 13, 42, 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,
back door latch connector (C) D503 terminal 7 or glass hatch
ajar switch connector (D) D707 terminal + and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.
3. CHECK DOOR SWITCHES
FRONT, REAR DOORS AND GLASS HATCH
Check continuity between door switch connector (A) B8 (front LH),
B108 (front RH), B18 (rear LH), B116 (rear RH) terminal 2, glass
hatch ajar switch connector (B) D707 terminal + and ground while
pressing switch (closing glass hatch) and releasing switch (opening
glass hatch).
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, rear doors and glass hatch) 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.
+ (GR) - 42 (GR) : Continuity should exist.
2 (SB, R/L, R/Y or GR) -
Ground : Continuity should not exist.
7 (R/W) - Ground : Continuity should not exist.
+ (GR) - Ground : Continuity should not exist.
WIIA0751E
Door switch is pressed
(or glass hatch closed) : Continuity should not exist.
Door switch is released
(or glass hatch open) : Continuity should exist.
WIIA0753E
Back door is open : Continuity should exist.
Back door is closed : Continuity should not exist.
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VEHICLE SECURITY (THEFT WARNING) SYSTEM
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Revision: August 20072004 QX56
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.
Hood Switch CheckEIS0039U
1. CHECK HOOD SWITCH
Check hood switch and hood fitting condition.
OK or NG
OK >> GO TO 2.
NG >> Adjust installation of hood switch.
2. CHECK HOOD SWITCH INPUT SIGNAL
With CONSULT-II
Check "HOOD SW" in "DATA MONITOR" mode with CONSULT-II.
Without CONSULT-II
Check voltage between IPDM E/R harness connector E122 terminal
41 and ground.
OK or NG
OK >> Hood switch circuit is OK.
NG >> GO TO 3.8 (B) - Ground : Continuity should exist.
LIIA0828E
When hood is open : HOOD SW ON
When hood is closed : HOOD SW OFF
LIIA0038E
ConnectorTerminal (Wire color)
Condition of
hoodVoltage (V)
(Approx.)
(+) (-)
E122 41 (Y/B) GroundOpen 0
Closed Battery voltage
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BL-96
VEHICLE SECURITY (THEFT WARNING) SYSTEM
Revision: August 20072004 QX56
3. CHECK HOOD SWITCH
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R connector E122 and hood switch connector.
3. Check continuity between IPDM E/R connector (A) E122 termi-
nal 41 and hood switch connector (B) E8 terminal 2.
4. Check continuity between IPDM E/R connector (A) E122 termi-
nal 41 and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace harness.
4. CHECK HOOD SWITCH
Check continuity between hood switch connector E8 terminals 1 and 2.
OK or NG
OK >> Repair or replace harness between hood switch and
grounds E9, E15 and E24.
NG >> Replace hood switch.41 (Y/B) - 2 (Y/B) : Continuity should exist.
41 (Y/B) - ground : Continuity should not exist.
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Terminals Condition of hood switch Continuity
1- 2Pressed No
Released Yes
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