INFINITI FX35 2008 Service Manual

BACK DOOR AUTO CLOSURE SYSTEMBL-157
< SERVICE INFORMATION >
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OK >> Open switch is OK.
NG >> GO TO 2.
2.CHECK HARNESS CONTINUITY
1. Disconnect back door closure control uni t and back door closure motor connector.
2. Check continuity between back door closure control unit con- nector D106 terminal 9 and back door closure motor connector
D109 terminal 4.
3. Check continuity between back door closure control unit con- nector D106 terminal 9 and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.
3.CHECK GROUND CIRCUIT
Check continuity between back door closure motor connector D109
terminal 8 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 9 and ground.
OK or NG
OK >> Replace back door lock assembly.
NG >> Replace back door closure control unit.
Check Back Door Opener S witch (With Intelligent Key)INFOID:0000000001327899
1.CHECK BACK DOOR OPENER SWITCH SIGNAL
1. Turn ignition switch OFF.
2. Check voltage between back door closure control unit connector and ground. 9 (P) – 4 (P) : Continuity should exist.
9 (P) – Ground : Continuity should not exist.
PIIA6176E
8 (B) – Ground : Continuity should exist.
PIIA6170E
Back door is closed
9 (P) – Ground : Battery voltage
PIIA6177E
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BL-158
< SERVICE INFORMATION >
BACK DOOR AUTO CLOSURE SYSTEM
OK or NG
OK >> Back door opener switch is OK.
NG >> GO TO 2.
2.CHECK HARNESS 1
1. Disconnect Intelligent Key unit and back door closure control unit connector.
2. Check continuity between Intelligent Key unit connector M34 ter- minal 23 and back door closure control unit connector D106 ter-
minal 6.
3. Check continuity between Intelligent Key unit connector M34 ter- minal 23 and ground.
OK or NG
OK >> GO TO 3.
NG >> Replace or repair malfunction harness.
3.CHECK HARNESS 2
1. Disconnect Intelligent Key unit and back door opener switch connector.
2. Check continuity between Intelligent Key unit connector M34 ter- minal 24 and back door opener switch connector D112 terminal
1.
3. Check continuity between Intelligent Key unit connector M34 ter- minal 24 and ground.
OK or NG
OK >> GO TO 4.
NG >> Replace or repair malfunction harness.
4.CHECK BACK DOOR OPENER SWITCH GROUND CIRCUIT
Check continuity between back door opener switch connector D112
terminal 2 and ground.
OK or NG
OK >> GO TO 5.
NG >> Repair or replace harness.
5.CHECK BACK DOOR OPENER SWITCH
Connector Terminals (Wire color)
ConditionVoltage (V)
(Approx.)
(+) (-)
D106 6 (LG) Ground Back door opener switch
: ON
0
Back door opener switch
: OFF 5
PIIA6178E
23 (L/Y) – 6 (LG) : Cont
inuity should exist.
23 (L/Y) - Ground : Continuity should not exist.
PIIB0216E
24 (P) – 1 (Y) : Conti nuity should exist.
24 (P) - Ground : Continuity should not exist.
PIIB1384E
2 (B) – Ground : Continuity should exist.
PIIA6180E
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BACK DOOR AUTO CLOSURE SYSTEMBL-159
< SERVICE INFORMATION >
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Check continuity between back door opener switch terminals 1 and
2.
OK or NG
OK >> GO TO 6.
NG >> Replace back door opener switch.
6.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 6 and ground.
OK or NG
OK >> Replace Intelligent Key unit.
NG >> Replace back door closure control unit.
Check Back Door Opener S witch (Without Intelligent Key)INFOID:0000000001327900
1.CHECK BACK DOOR OPENER SWITCH SIGNAL
1. Turn ignition switch OFF.
2. Check voltage between back door closure control unit connector and ground.
OK or NG
OK >> Back door opener switch is OK.
NG >> GO TO 2.
2.CHECK HARNESS CONTINUITY
1. Disconnect back door closure control unit and back door opener switch connector.
2. Check continuity between back door closure control unit con- nector D106 terminal 6 and back door opener switch connector
D112 terminal 1.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness between back door closure control unit and back door opener switch.
3.CHECK GROUND CIRCUIT
Terminals Condition Continuity
12 Back door opener switch: ON Yes
Back door opener switch: OFF No
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6 (LG) – Ground : Approx. 5V
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ConnectorTerminals (Wire color)
ConditionVoltage (V)
(Approx.)
(+) (-)
D106 6 (Y) Ground Back door opener switch
: ON
0
Back door opener switch
: OFF 5
PIIA6178E
6 (Y) – 1 (Y) : Continuity should exist.
PIIA6179E
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BL-160
< SERVICE INFORMATION >
BACK DOOR AUTO CLOSURE SYSTEM
Check continuity between back door opener switch connector D112
terminal 2 and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace harness.
4.CHECK BACK DOOR OPENER SWITCH
Check continuity between back door opener switch terminals 1 and
2.
OK or NG
OK >> GO TO 5.
NG >> Replace back door opener switch.
5.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 6 and ground.
OK or NG
OK >> Check condition of harness and connector.
NG >> Replace back door closure control unit.
Check Unlock Sensor (W ithout Intelligent Key)INFOID:0000000001327901
1.CHECK UNLOCK SENSOR SIGNAL
1. Turn ignition switch OFF.
2. Check voltage between back door closure control unit connector and ground.
OK or NG
OK >> Unlock sensor is OK.
NG >> GO TO 2.
2.CHECK HARNESS CONTINUITY
1. Disconnect back door closure control unit and front door lock assembly (passenger side) connector.
2 (B) – Ground : Continuity should exist.
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Terminals Condition Continuity
12 Back door opener switch: ON Yes
Back door opener switch: OFF No
PIIA6181E
6 (Y) – Ground : Approx. 5V
PIIA6178E
ConnectorTerminals (Wire color)
ConditionVoltage (V)
(Approx.)
(+) (-)
D106 5 (W) Ground Passenger side door lock is
locked
5
Passenger side door lock is
unlocked 0
PIIA6182E
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BACK DOOR AUTO CLOSURE SYSTEMBL-161
< SERVICE INFORMATION >
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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.
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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
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BL-162
< SERVICE INFORMATION >
BACK DOOR AUTO CLOSURE SYSTEM
2.CHECK HARNESS CONTINUITY
1. Disconnect back door closure control uni t and back door closure motor connector.
2. Check continuity between back door closure control unit con-
nector D106 terminals 2, 3 and back door closure motor connec-
tor D109 terminals 1, 2.
3. Check continuity between back door closure control unit con- nector D106 terminals 2, 3 and ground.
OK or NG
OK >> Replace back door closure motor.
NG >> Repair or replace harness.
Removal and Installation of Back Door Closer Control UnitINFOID:0000000001327903
1. Remove the back door finisher. EI-47, "Component Parts Location".
2. Disconnect the back door closer control unit harness, remove the screw and back door closer control unit.
2 (PU) – 1 (PU) : Cont
inuity should exist.
3 (G) – 2 (G) : Conti nuity should exist.
2 (PU) – Ground : Continuity should not exist.
3 (G) – Ground : Continuity should not exist.
PIIA6186E
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VEHICLE SECURITY (THEFT WARNING) SYSTEMBL-163
< SERVICE INFORMATION >
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VEHICLE SECURITY (TH EFT WARNING) SYSTEM
Component Parts and Har ness Connector LocationINFOID:0000000001327904
PIIB0407E
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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
< SERVICE INFORMATION >
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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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BL-166
< SERVICE INFORMATION >
VEHICLE SECURITY (THEFT WARNING) SYSTEM
When headlamp high relay (with built-in IPDM E/R) and horn relay are energized and then power is supplied
to headlamps (LH and RH) and horns (HIGH and LOW).
The headlamps flash and the horn sounds intermittently.
The alarm automatically turns off after 50 seconds, but will reactivate if the vehicle is tampered with again.
VEHICLE SECURITY SYSTEM DEACTIVATION
To deactivate the vehicle security system, a door or the back door must be unlocked with the key, key fob or
Intelligent Key.
When the key is used to unlock a door, BCM terminal 22 receives signal
 from terminal 14 of the power window ma in switch (door lock and unlock switch).
When the BCM receives either one of these signals or unl ock signal from key cylinder switch, key fob or Intel-
ligent Key, the vehicle security sy stem is deactivated. (Disarmed phase)
PANIC ALARM OPERATION
Remote keyless entry system may or may not operat e vehicle security system (horn and headlamps) as
required.
When the remote keyless entry system is triggered, ground is supplied intermittently from IPDM E/R terminals
38 and 60.
When headlamp relay (which built-in IPDM E/R) and hor n relay are energized and then power is supplied to
headlamps (LH and RH) and horns (HIGH and LOW).
The headlamp flashes and the hor n sounds intermittently.
The alarm automatically turns off after 25 seconds or when BCM receives any signal from key fob or Intelligent
Key.
CAN Communication System DescriptionINFOID:0000000001327906
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication s peed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CA N communication, control units are connected with 2
communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
CAN Communication UnitINFOID:0000000001327907
Refer to LAN-43, "CAN System Specification Chart".
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