2008 INFINITI FX35 service

BACK DOOR AUTO CLOSURE SYSTEMBL-149
< SERVICE INFORMATION >
C
DE
F
G H
J
K L
M A
B
BL
N
O P
- 5 seconds past without opening back door.
PIIA6187E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

BL-150
< SERVICE INFORMATION >
BACK DOOR AUTO CLOSURE SYSTEM
Wiring Diagram - B/CLOS -
INFOID:0000000001327890
TIWM1712E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

BACK DOOR AUTO CLOSURE SYSTEMBL-151
< SERVICE INFORMATION >
C
DE
F
G H
J
K L
M A
B
BL
N
O P
TIWM1672E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

BL-152
< SERVICE INFORMATION >
BACK DOOR AUTO CLOSURE SYSTEM
Terminal and Reference Value for Back Door Closure Control Unit
INFOID:0000000001327891
*, (): Models with Intelligent KeyTe r m i -
nal Wire
color ItemSignal
Input/
output Condition
Voltage (V)
(Approx.)
1 R Power source (Fuse) Input — Battery voltage
2 PU Closure motor (open) signal Output Fully close → fully open
3 G Closure motor (close) signal Output Fully open → fully close
4 B Ground — — 0
5 W
(B) Ground* — — 0*
Unlock sensor signal
(passenger side)
InputPassenger side door lock is locked 5
Passenger side door lock is un-
locked
0
6 Y
(LG) Back door opener switch sig-
nal
InputBack door opener switch is ON 0
Other than above 5
7 OR Half-latch switch signal Input Fully open → fully close
8 L Close switch signal Input Fully open → fully close
9 P Open switch signal Input Fully open → fully close
SIIA1480J
SIIA1480J
SIIA1479J
SIIA1478J
SIIA1481J
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

BACK DOOR AUTO CLOSURE SYSTEMBL-153
< SERVICE INFORMATION >
C
DE
F
G H
J
K L
M A
B
BL
N
O P
Work FlowINFOID:0000000001327892
1. Check the symptom and customer's requests.
2. Understand the outline of system. Refer to BL-148, "
System Description".
3. Perform the preliminary check, Refer to BL-153, "
Preliminary Check"
4. According to the trouble diagnosis chart, repair or replace the cause of the malfunction. Refer to BL-153,
"Trouble Diagnosis Chart by Symptom".
5. Does back door auto closure system operate nor mally? If Yes, GO TO 6, If No, GO TO 4.
6. INSPECTION END
Preliminary CheckINFOID:0000000001327893
Remove the fuse No.18 for the back door cl osure with the back door closure inactive.
Check that the back door can be open / close normally.
CAUTION:
It is judged it is abnormal, disc ontinues closure operation, and drive lever returns to a neutral position
if not becoming full-latch within about three seconds after half-latch.
When this operation is done cont inuously three times, both back door closure and back door opener
switch are not operated because the func tion of back door closure is stopped.
Thing to reset power supply by pull ing out and opening fuse in that case.
Trouble Diagnosis Chart by SymptomINFOID:0000000001327894
Check Back Door Closure Control Unit Power Supply and Ground CircuitINFOID:0000000001327895
1.CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Check voltage between back door closure control unit connector D106 terminal 1 and ground.
OK or NG
OK >> GO TO 2.
NG >> Check the following.  15A fuse [No.18, located in fuse block (J/B)]
 Harness for open or short between back door closurecontrol unit and fuse.
Symptom Diagnostic procedure and repair order Refer to page
Back door closure does not operate. 1. Check back door closure motor power supply and
ground circuit
BL-153
2. Check half-latch switch
BL-154
3. Check close switchBL-155
4. Check open switchBL-156
5. Check closure motorBL-161
6. Replace back door closure control unit.BL-162
Back door does not open (with Intelligent Key system).1. Check Intelligent Key system
BL-1032. Check back door opener switchBL-157
Back door does not open1. Check back door opener switch
BL-1592. Check unlock sensorBL-160
3. Replace back door closure control unit.BL-162
Back door does not enter fully closed states through
back door closure operates.1. Back door fitting adjustment.
BL-141
2. Replace back door lock assembly.BL-146
1 (R) – Ground : Battery voltage
PIIA6166E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

BL-154
< SERVICE INFORMATION >
BACK DOOR AUTO CLOSURE SYSTEM
2.CHECK GROUND CIRCUIT
1. Disconnect back door closure control unit connector.
2. Check continuity between back door closure control unit con- nector D106 terminal 4 and ground.
OK or NG
OK >> Power supply and ground circuit are OK.
NG >> Repair or replace harness.
Check Half-Latch SwitchINFOID:0000000001327896
1.CHECK HALF-LATCH SWITCH SIGNAL
1. Turn ignition switch OFF.
2. Check the signal between back door closure c ontrol unit connector and ground with oscilloscope.
OK or NG
OK >> Half-latch 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 7 and back door closure motor connector
D109 terminal 6.
3. Check continuity between back door closure control unit con- nector D106 terminal 7 and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.
3.CHECK GROUND CIRCUIT 4 (B) – Ground : Continuity should exist.
PIIA6167E
Con-
nector Terminals (Wire color)
Back door
condition Signal
(Reference value)
(+) (-)
D106 7 (OR) Ground Fully open
→
fully closed
PIIA6168ESIIA1479J
7 (OR) – 6 (OR) : Cont inuity should exist.
7 (OR) – Ground : Continuity should not exist.
PIIA6169E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

BACK DOOR AUTO CLOSURE SYSTEMBL-155
< SERVICE INFORMATION >
C
DE
F
G H
J
K L
M A
B
BL
N
O P
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 7 and ground.
OK or NG
OK >> Replace back door lock assembly.
NG >> Replace back door closure control unit.
Check Close SwitchINFOID:0000000001327897
1.CHECK CLOSE SWITCH SIGNAL
1. Turn ignition switch OFF.
2. Check the signal between back door closure control unit connector and ground with oscilloscope.
OK or NG
OK >> Close 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.
8 (B) – Ground : Continuity should exist.
PIIA6170E
Back door is closed
7 (OR) – Ground : Battery voltage
PIIA6172E
Con-
nector Terminals (Wire color)
Back door
condition Signal
(Reference value)
(+) (-)
D106 8 (L) Ground Fully open
→
fully closed
PIIA6171ESIIA1478J
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

BL-156
< SERVICE INFORMATION >
BACK DOOR AUTO CLOSURE SYSTEM
2. Check continuity between back door closure control unit con-nector D106 terminal 8 and back door closure motor connector
D109 terminal 5.
3. Check continuity between back door closure control unit con- nector D106 terminal 8 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 8 and ground.
OK or NG
OK >> Replace back door lock assembly.
NG >> Replace back door closure control unit.
Check Open SwitchINFOID:0000000001327898
1.CHECK OPEN SWITCH SIGNAL
1. Turn ignition switch OFF.
2. Check the signal between back door closure c ontrol unit connector and ground with oscilloscope.
OK or NG
8 (L) – 5 (L) : Conti nuity should exist.
8 (L) – Ground : Continuity should not exist.
PIIA6174E
8 (B) – Ground : Continuity should exist.
PIIA6170E
Back door is closed
8 (L) – Ground : Battery voltage
PIIA6173E
Con-
nector Terminals (Wire color)
Back door
condition Signal
(Reference value)
(+) (-)
D106 9 (P) Ground Fully open
→
fully closed
PIIA6175ESIIA1481J
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C