ignition INFINITI FX35 2008 Service Manual

BACK DOOR AUTO CLOSURE SYSTEMBL-161
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2. Check continuity between back door closure control unit con- nector D106 terminal 5 and front door lock assembly (passenger
side) connector D40 terminal 5.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness between back door closure control unit and front door lock assembly (passenger
side).
3.CHECK GROUND CIRCUIT
Check continuity between front door lock assembly (passenger side)
connector D40 terminal 4 and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace harness.
4.CHECK BACK DOOR CLOSURE CONTROL UNIT OUTPUT SIGNAL
1. Connect back door closure control unit connector.
2. Check voltage between back door closure control unit connector D106 terminal 5 and ground.
OK or NG
OK >> Replace front door lock assembly (passenger side).
NG >> Replace back door closure control unit.
Check Closure MotorINFOID:0000000001327902
1.CHECK BACK DOOR CLOSURE MOTOR
1. Turn ignition switch OFF.
2. Check the signal between back door closure control unit connector and ground with oscilloscope.
OK or NG
OK >> GO TO 2.
NG >> Replace back door closure control unit. 5 (W) – 5 (W) : Continuity should exist.
PIIA6183E
4 (B) – Ground : Continuity should exist.
PIIA6184E
5 (W) – Ground : Approx. 5V
PIIA6182E
Con-
nector Terminals (Wire color)
Back door
condition Signal
(Reference value)
(+) (-)
D106 2 (PU)
GroundFully closed
→
fully open
3 (G) Fully open
→
fully closed
PIIA6185ESIIA1480J
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
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BL-164
< SERVICE INFORMATION >
VEHICLE SECURITY (THEFT WARNING) SYSTEM
System Description
INFOID:0000000001327905
DESCRIPTION
Operation Flow
Setting the Vehicle Security System
Initial condition
 Ignition switch is in OFF position.
Disarmed phase
 When hood, doors or back door is open, the vehicle secu rity system is set in the disarmed phase on the
assumption that the owner is inside or near the vehicle.
 When the vehicle security system is in the disarmed phase, the security indicator lamp blinks every 2.4 sec-
onds.
Pre-armed phase and armed phase
When the following operation 1 or 2 is performed, the vehicle security system turns into the “pre-armed”
phase. (The security indicator lamp illuminates.)
1. BCM receives LOCK signal from front door key cyli nder switch, key fob or Intelligent Key after hood, back
door and all doors are closed.
2. Hood, back door and all doors are closed after front doors are locked by key or door lock and unlock
switch.
The security indicator lamp illuminates for 30 sec onds. then, the system automatically shifts into the
“armed” phase.
Canceling the Set Vehicle Security System
When one of the following operations is performed, the armed phase is canceled.
1. Unlock the doors with the key, key fob or Intelligent Key.
2. Turn ignition switch “ON” or “ACC” position.
Canceling the Alarm Operation of the Vehicle Security System
When unlock the door with the key, key fob or Intelligent Key the alarm operation is canceled.
Activating the Alarm Operation of the Vehicle Security System
PIIB4075E
PIIB0176E
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VEHICLE SECURITY (THEFT WARNING) SYSTEMBL-165
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Make sure the system is in the armed phase. (The security indicator lamp brinks every 2.4 seconds.)
When the following operation 1 or 2 is performed, t he system sounds the horns and flashes the headlamps for
about 50 seconds.
1. Hood, back door or any door is opened during armed phase.
2. Disconnecting and connecting the battery connector before canceling armed phase.
POWER SUPPLY
Power is supplied at all times
 through 10A fuse [No.19, located in the fuse block (J/B)]
 to security indicator lamp terminal 1.
 through 50A fusible link (letter M, located in the fuse and fusible link box)
 to BCM terminal 55.
 through 15A fuse [No.22, located in the fuse block (J/B)]
 to BCM terminal 42.
 through 15A fuse [No.34, located in the fuse and fusible link box]
 to horn relay terminal 2.
 through 10A fuse [No.71, located in the IPDM E/R]
 to IPDM E/R internal CPU.
 through 15A fuse [No.78, located in the IPDM E/R]
 to IPDM E/R internal CPU.
With the ignition switch in the ACC or ON position, power is supplied
 through 10A fuse [No. 6, located in the fuse block (J/B)]
 to BCM terminal 11.
INITIAL CONDITION TO ACTIVATE THE SYSTEM
The operation of the vehicle security system is controlled by the doors, hood and back door.
To activate the vehicle security system, BCM must receive signals indicating the doors, hood and back door
are closed and the doors are locked by key fob, Intelligent Key or ignition key.
When a door is open, BCM terminal 12 (passenger side door), 13 (rear RH door), 62 (driver side door), 63
(rear LH door) receives a ground signal from each door switch.
When front door LH is unlocked by power window main switch (door lock and unlock switch),
BCM terminal 22 receives a signal from terminal 14 of power window main switch with power window serial
link.
When front door RH is unlocked by front power window s witch (passenger side) (door lock and unlock switch),
BCM terminal 22 receives a signal from terminal 16 of front power window switch (passenger side) with power
window serial link.
When the hood is open, IPDM E/R receives a ground signal
 to IPDM E/R terminal 56
 through hood switch terminal 2
 through hood switch terminal 1
 through body grounds E21, E50 and E51.
The IPDM E/R then sends a signal to the BCM through the CAN SYSTEM.
When the back door is open,
 to BCM terminal 58
 through back door closure motor terminal 7
 through back door closure motor terminal 8
 through body grounds B15 and B45.
VEHICLE SECURITY SYSTEM ALARM OPERATION
The vehicle security system is triggered by
 opening a door
 opening the back door
 opening the hood
 detection of battery disconnect and connect.
The vehicle security system will be triggered once the system is in armed phase,
When BCM receives a ground signal at terminals 12 (p assenger side door), 13 (rear RH door), 58 (back door),
62 (driver side door), 63 (rear LH door), or rece ives a signal from the IPDM E/R (hood switch).
When the vehicle security system is triggered,
ground is supplied intermittently from IPDM E/R terminals 38 and 60.
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VEHICLE SECURITY (THEFT WARNING) SYSTEMBL-173
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Terminal and Reference Value for BCMINFOID:0000000001327910
Terminal Wire color Item Signal
Input/
output Condition
Voltage (V)
(Approx.)
11 L G ACC power supply
(ACC or ON) Input
Ignition switch (ACC or ON po-
sition) Battery voltage
12 P/B Front door switch
passenger side signal Input ON (Open)
→ OFF (Closed) 0 → Battery voltage
13 P/L Rear door (RH) switch sig-
nal
Input ON (Open)
→ OFF (Closed) 0 → Battery voltage
18 B Remote keyless entry re-
ceiver (Ground) —— 0
19 R Remote keyless entry re-
ceiver (Power supply) Output —
20 Y Remote keyless entry re-
ceiver (Signal)
InputStand-by
When remote keyless entry re-
ceiver receives signal from
keyfob.
22 OR Power window serial link Input/
Output IGN SW ON or power window
timer operating
23 G/OR Security indicator lamp Output Goes off → Illuminates Battery voltage → 0
39 L CAN-H Input/
Output ——
40 P CAN-L Input/
Output ——
42 L/R Power source (Fuse) Input — Battery voltage
49 B Ground (signal) — — 0
52 B Ground (power) — — 0
55 G Power source (Fusible link) Input — Battery voltage
58 L Back door switch signal Input ON (Open) → OFF (Closed) 0 → 9
OCC3881D
OCC3879D
OCC3880D
PIIA2344J
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3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

VEHICLE SECURITY (THEFT WARNING) SYSTEMBL-175
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O PACTIVE TEST
Monitored Item Description
IGN ON SW Indicates [ON/OFF] condition of ignition switch.
ACC ON SW Indicates [ON/OFF] condition of ignition switch in ACC position.
KEY ON SW Indicates [ON/OFF] condition of key switch.
TRUNK OPNR SW This is displayed ev en when it is not equipped.
TRUNK CYL SW This is displayed ev en when it is not equipped.
TRUNK OPN MNTR This is displayed even when it is not equipped.
KEYLESS LOCK Indicates [ON/OFF] conditio n of lock signal from key fob.
KEYLESS UNLOCK Indicates [ON/O FF] condition of unlock signal from key fob.
KEYLESS TRUNK Indicates [ON/OFF] condition of trunk opener signal from key fob.
HOOD SW Indicates [ON/OFF] condition of hood switch.
DOOR SW-DR Indicates [ON/OFF] cond ition of front door switch LH.
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.
BACK DOOR SW Indicates [ON/OFF] condition of back door switch.
KEY CYL LK SW Indicates [ON/OFF] condition of lock signal from key cylinder switch.
KEY CYL UN SW Indicates [ON/OFF] condition of unlock signal from key cylinder switch.
CDL LOCK SW Indicates [ON/OFF] condition of lock signal from door lock/unlock switch LH and RH.
CDL UNLOCK SW Indicates [ON/OFF] condition of unlock signal from door lock/unlock switch LH and RH.
Test Item Description
THEFT IND This test is able to check security indicator lamp operation. The lamp will be turned on when “ON”
on CONSULT-III screen is touched.
ANTI THEFT HORN This test is able to check vehicle security horn operation. The horns will be activated for 0.5 sec-
onds after “ON” on CONSULT-III screen is touched.
HEADLAMP(HI) This test is able to check vehicle security lamp operation. The headlamps will be activated for 0.5
seconds after “ON” on CONSULT-III screen is touched.
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
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VEHICLE SECURITY (THEFT WARNING) SYSTEMBL-177
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Preliminary CheckINFOID:0000000001327914
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. Refer to BL-177, "
Trouble Diagnosis Symptom
Chart".
Trouble Diagnosis Symptom ChartINFOID:0000000001327915
PIIA6910E
Procedure
Diagnostic procedure Refer to page
Symptom
1 Vehicle security
system cannot be
set by ···· Door switch Diagnostic Procedure 1 (Check door, hood and back door switch)
BL-178
Lock / unlock switch Diagnostic Procedure 6 (Check door lock / unlock switch)BL-184
Door outside key Diagnostic Procedure 3 (Check door key cylinder switch)BL-183
Key fob Check remote keyless entry. BL-50
Intelligent Key Check Intelligent Key.BL-76
— If the above systems are “OK”, replace BCM.BCS-13
Security indicator does not turn “ON”.Diagnostic Procedure 2 (Check security indicator lamp)
BL-182If the above systems are “OK”, replace BCM.BCS-13
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VEHICLE SECURITY (THEFT WARNING) SYSTEMBL-179
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OK or NG
OK >> Door switch circuit is OK, and go to “1 – 2 HOOD SWITCH CHECK”.
NG >> GO TO 2.
2.CHECK HARNESS CONTINUITY
1. Turn ignition switch OFF.
2. Disconnect BCM and door switches connector.
3. Check continuity between BCM connector B14 terminals 62, 63 and door switch connector B26, B46 terminal 1, and ground.
4. Check continuity between BCM connector M3 terminals 12, 13 and door switch connector B36, B206 terminal 1, and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.
3.CHECK DOOR SWITCH
Check continuity between each door switch terminal 1 and ground
part of door switch.
OK or NG
OK >> GO TO 4.
NG >> Replace malfunctioning door switch.
Front door switch
driver side 62 (W)
Ground OPEN 0
CLOSE Battery voltage
Front door switch
passenger side 12 (P/B) OPEN 0
CLOSE Battery voltage
Rear door switch
LH 63 (P) OPEN 0
CLOSE Battery voltage
Rear door switch
RH 13 (P/L) OPEN 0
CLOSE Battery voltage
BCM – Front door switch (driver side)
62 (W) – 1 (W) : Conti nuity should exist.
BCM – Rear door switch LH
63 (P) – 1 (P) : Conti nuity should exist.
BCM – Ground
62 (W) – Ground : Continui ty should not exist.
63 (P) – Ground : Continuity should not exist.
PIIA6225E
BCM – Front door switch (passenger side)
12 (P/B) – 1 (SB) : Cont inuity should exist.
BCM – Rear door switch RH
13 (P/L) – 1 (P) : Cont inuity should exist.
BCM – Ground
12 (P/B) – Ground : Conti nuity should not exist.
13 (P/L) – Ground : Continuity should not exist.
PIIA6224E
Terminal Condition Continuity
1 Ground part of
door switch Pushed No
Released Yes
PIIA3351E
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BL-180
< SERVICE INFORMATION >
VEHICLE SECURITY (THEFT WARNING) SYSTEM
4.CHECK BCM OUTPUT SIGNAL
1. Connect BCM connector.
2. Check voltage between BCM connector M3, B14 terminals 12, 13, 62, 63 and ground.
OK or NG
OK >> Check condition of harness and connector.
NG >> Replace BCM.
1 – 2 HOOD SWITCH CHECK
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-III
Check (“HOOD SW”) in “DATA MONITOR” mode with CONSULT-III.
Without CONSULT-III
Check voltage between IPDM E/R connector and ground.
OK or NG
OK >> Hood switch is OK, and go to “1 – 3 BACK DOOR SWITCH CHECK”.
NG >> GO TO 3.
3.CHECK HOOD SWITCH
1. Turn ignition switch OFF.
2. Disconnect hood switch connector. 12 (P/B) – Ground : Battery voltage
13 (P/L) – Ground : Battery voltage
62 (W) – Ground : Battery voltage
63 (P) – Ground : Battery voltage
PIIA6223E
Monitor item Condition
HOOD SW OPEN : ON
CLOSE : OFF
Connector Terminals (Wire color)
ConditionVoltage (V)
(Approx.)
(+) (-)
E9 56 (LG) Ground OPEN 0
CLOSE Battery voltage
PIIA6228E
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3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

VEHICLE SECURITY (THEFT WARNING) SYSTEMBL-181
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3. Check continuity between hood switch terminals 1 and 2.
OK or NG
OK >> GO TO 4.
NG >> Replace hood switch.
4.CHECK IPDM E/R OUTPUT SIGNAL
Check voltage between IPDM E/R connector and ground.
OK or NG
OK >> Check the following.  Hood switch ground circuit.
 Harness for open or short between hood switch andIPDM E/R.
NG >> Replace IPDM E/R
1 – 3 BACK DOOR SWITCH CHECK
1.CHECK BACK DOOR SWITCH INPUT SIGNAL
With CONSULT-III
Check (“BACK DOOR SW”) in “DATA MONITOR” mode with CONSULT-III.
Without CONSULT-III
Check voltage between BCM connector and ground.
OK or NG
OK >> Back door switch circuit is OK.
NG >> GO TO 2.
2.CHECK HARNESS CONTINUITY
1. Turn ignition switch OFF.
2. Disconnect BCM and back door closure motor connector.
Terminals Condition Continuity
1 2 Pressed No
Released Yes
PIIA2498E
56 (LG) – Ground : Battery voltage
PIIA6228E
Monitor item Condition
BACK DOOR SW OPEN : ON
CLOSE : OFF
Connector Terminals (Wire color)
ConditionVoltage (V)
(Approx.)
(+) (–)
B14 58 (L) Ground OPEN 0
CLOSE 9
PIIA6229E
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VEHICLE SECURITY (THEFT WARNING) SYSTEMBL-183
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With CONSULT-III
Check (“THEFT IND”) in “ACTIV E TEST” mode with CONSULT-III.
Without CONSULT-III
Check voltage between BCM connector and ground.
OK or NG
OK >> Security indicator lamp is OK.
NG >> GO TO 2.
2.CHECK HARNESS CONTINUITY
1. Turn ignition switch OFF.
2. Disconnect BCM and security indicator lamp connector.
3. Check continuity between BCM connector M3 terminal 23 and security indicator lamp connector M38 terminal 2.
OK or NG
OK >> Check the following.  Harness for open or short between BCM and securityindicator lamp.
 10A fuse [No.19, located in fuse block (J/B)]
NG >> Repair or replace harness between BCM and security indicator lamp.
Diagnosis Procedure 3INFOID:0000000001327918
FRONT DOOR KEY CYLINDER SWITCH CHECK
1.CHECK KEY CYLINDER SWITCH OPERATION
Check door key cylinder switch using key.
Do doors lock / unlock when using the key?
YES >> Front door key cylinder switch operation is OK.
NO >> Check door key cylinder switch circuit. Refer to GW-43, "
Check Front Door Key Cylinder Switch".
Diagnosis Procedure 4INFOID:0000000001327919
VEHICLE SECURITY HORN ALARM CHECK
1.CHECK HORN OPERATION
Check if horn sounds with horn switch.
Does horn operate?
YES >> Check harness for open or shor t between IPDM E/R and horn relay.
NO >> Check horn circuit. Refer to WW-48
.
Diagnosis Procedure 5INFOID:0000000001327920
VEHICLE SECURITY HEADLAMP ALARM CHECK
Perform operation shown on display indicator lamp
should illuminate.
Connector Terminals (Wire color)
ConditionVoltage (V)
(Approx.)
(+) (-)
M3 23 (G/OR) Ground Illuminates 0
Goes off Battery voltage
PIIA6230E
23 (G/OR) – 2 (G/OR) : Co
ntinuity should exist.
PIIA6231E
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