2008 INFINITI FX35 service

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
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

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
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

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
PIIA6181E
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
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

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.
PIIA6180E
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
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

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
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

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
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

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
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

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
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C